--- a/hotspot/.hgignore Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/.hgignore Fri Apr 11 09:56:35 2008 -0400
@@ -1,3 +1,4 @@
^build/
^dist/
^nbproject/private/
+^src/share/tools/hsdis/bin/
--- a/hotspot/make/linux/makefiles/vm.make Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/linux/makefiles/vm.make Fri Apr 11 09:56:35 2008 -0400
@@ -71,6 +71,7 @@
# The following variables are defined in the generated flags.make file.
BUILD_VERSION = -DHOTSPOT_RELEASE_VERSION="\"$(HS_BUILD_VER)\""
JRE_VERSION = -DJRE_RELEASE_VERSION="\"$(JRE_RELEASE_VER)\""
+HS_LIB_ARCH = -DHOTSPOT_LIB_ARCH=\"$(LIBARCH)\"
BUILD_TARGET = -DHOTSPOT_BUILD_TARGET="\"$(TARGET)\""
BUILD_USER = -DHOTSPOT_BUILD_USER="\"$(HOTSPOT_BUILD_USER)\""
VM_DISTRO = -DHOTSPOT_VM_DISTRO="\"$(HOTSPOT_VM_DISTRO)\""
@@ -81,6 +82,7 @@
${BUILD_VERSION} \
${BUILD_TARGET} \
${BUILD_USER} \
+ ${HS_LIB_ARCH} \
${JRE_VERSION} \
${VM_DISTRO}
--- a/hotspot/make/linux/platform_amd64 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/linux/platform_amd64 Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = amd64
-
sysdefs = -DLINUX -D_GNU_SOURCE -DAMD64
--- a/hotspot/make/linux/platform_i486 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/linux/platform_i486 Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = i386
-
sysdefs = -DLINUX -D_GNU_SOURCE -DIA32
--- a/hotspot/make/linux/platform_sparc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/linux/platform_sparc Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = sparc
-
sysdefs = -DLINUX -D_GNU_SOURCE -DSPARC
--- a/hotspot/make/solaris/makefiles/vm.make Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/makefiles/vm.make Fri Apr 11 09:56:35 2008 -0400
@@ -63,6 +63,7 @@
# The following variables are defined in the generated flags.make file.
BUILD_VERSION = -DHOTSPOT_RELEASE_VERSION="\"$(HS_BUILD_VER)\""
JRE_VERSION = -DJRE_RELEASE_VERSION="\"$(JRE_RELEASE_VER)\""
+HS_LIB_ARCH = -DHOTSPOT_LIB_ARCH=\"$(LIBARCH)\"
BUILD_TARGET = -DHOTSPOT_BUILD_TARGET="\"$(TARGET)\""
BUILD_USER = -DHOTSPOT_BUILD_USER="\"$(HOTSPOT_BUILD_USER)\""
VM_DISTRO = -DHOTSPOT_VM_DISTRO="\"$(HOTSPOT_VM_DISTRO)\""
@@ -73,6 +74,7 @@
${BUILD_VERSION} \
${BUILD_TARGET} \
${BUILD_USER} \
+ ${HS_LIB_ARCH} \
${JRE_VERSION} \
${VM_DISTRO}
--- a/hotspot/make/solaris/platform_amd64 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_amd64 Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = sparcWorks
-gnu_dis_arch = amd64
-
sysdefs = -DSOLARIS -DSPARC_WORKS -DAMD64
--- a/hotspot/make/solaris/platform_amd64.gcc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_amd64.gcc Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = amd64
-
sysdefs = -DSOLARIS -D_GNU_SOURCE -DAMD64
--- a/hotspot/make/solaris/platform_i486 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_i486 Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = sparcWorks
-gnu_dis_arch = i386
-
sysdefs = -DSOLARIS -DSPARC_WORKS -DIA32
--- a/hotspot/make/solaris/platform_i486.gcc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_i486.gcc Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = i386
-
sysdefs = -DSOLARIS -D_GNU_SOURCE -DIA32
--- a/hotspot/make/solaris/platform_sparc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_sparc Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = sparcWorks
-gnu_dis_arch = sparc
-
sysdefs = -DSOLARIS -DSPARC_WORKS -DSPARC
--- a/hotspot/make/solaris/platform_sparc.gcc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_sparc.gcc Fri Apr 11 09:56:35 2008 -0400
@@ -12,6 +12,4 @@
compiler = gcc
-gnu_dis_arch = sparc
-
sysdefs = -DSOLARIS -D_GNU_SOURCE -DSPARC
--- a/hotspot/make/solaris/platform_sparcv9 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_sparcv9 Fri Apr 11 09:56:35 2008 -0400
@@ -8,10 +8,8 @@
os_arch_model = solaris_sparc
-lib_arch = sparc
+lib_arch = sparcv9
compiler = sparcWorks
-gnu_dis_arch = sparc
-
sysdefs = -DSOLARIS -DSPARC_WORKS -DSPARC
--- a/hotspot/make/solaris/platform_sparcv9.gcc Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/solaris/platform_sparcv9.gcc Fri Apr 11 09:56:35 2008 -0400
@@ -8,10 +8,8 @@
os_arch_model = solaris_sparc
-lib_arch = sparc
+lib_arch = sparcv9
compiler = gcc
-gnu_dis_arch = sparc
-
sysdefs = -DSOLARIS -D_GNU_SOURCE -DSPARC
--- a/hotspot/make/windows/makefiles/vm.make Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/windows/makefiles/vm.make Fri Apr 11 09:56:35 2008 -0400
@@ -58,6 +58,7 @@
# The following variables are defined in the generated local.make file.
CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_RELEASE_VERSION=\"$(HS_BUILD_VER)\""
CPP_FLAGS=$(CPP_FLAGS) /D "JRE_RELEASE_VERSION=\"$(JRE_RELEASE_VER)\""
+CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_LIB_ARCH=\"$(BUILDARCH)\""
CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_BUILD_TARGET=\"$(BUILD_FLAVOR)\""
CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_BUILD_USER=\"$(BuildUser)\""
CPP_FLAGS=$(CPP_FLAGS) /D "HOTSPOT_VM_DISTRO=\"$(HOTSPOT_VM_DISTRO)\""
--- a/hotspot/make/windows/platform_amd64 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/windows/platform_amd64 Fri Apr 11 09:56:35 2008 -0400
@@ -10,6 +10,6 @@
os_arch_model = windows_x86_64
-compiler = visCPP
+lib_arch = amd64
-gnu_dis_arch = amd64
+compiler = visCPP
--- a/hotspot/make/windows/platform_i486 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/make/windows/platform_i486 Fri Apr 11 09:56:35 2008 -0400
@@ -10,7 +10,6 @@
os_arch_model = windows_x86_32
-compiler = visCPP
+lib_arch = i386
-gnu_dis_arch = i386
-
+compiler = visCPP
--- a/hotspot/src/cpu/sparc/vm/disassembler_sparc.cpp Thu Apr 10 15:49:16 2008 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,230 +0,0 @@
-/*
- * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- */
-
-# include "incls/_precompiled.incl"
-# include "incls/_disassembler_sparc.cpp.incl"
-
-#ifndef PRODUCT
-
-#define SPARC_VERSION (VM_Version::v9_instructions_work()? \
- (VM_Version::v8_instructions_work()? "" : "9") : "8")
-
-// This routine is in the shared library:
-typedef unsigned char* print_insn_sparc_t(unsigned char* start, DisassemblerEnv* env,
- const char* sparc_version);
-
-void* Disassembler::_library = NULL;
-dll_func Disassembler::_print_insn_sparc = NULL;
-
-bool Disassembler::load_library() {
- if (_library == NULL) {
- char buf[1024];
- char ebuf[1024];
- sprintf(buf, "disassembler%s", os::dll_file_extension());
- _library = hpi::dll_load(buf, ebuf, sizeof ebuf);
- if (_library != NULL) {
- tty->print_cr("Loaded disassembler");
- _print_insn_sparc = CAST_TO_FN_PTR(dll_func, hpi::dll_lookup(_library, "print_insn_sparc"));
- }
- }
- return (_library != NULL) && (_print_insn_sparc != NULL);
-}
-
-
-class sparc_env : public DisassemblerEnv {
- private:
- nmethod* code;
- outputStream* output;
- const char* version;
-
- static void print_address(address value, outputStream* st);
-
- public:
- sparc_env(nmethod* rcode, outputStream* routput) {
- code = rcode;
- output = routput;
- version = SPARC_VERSION;
- }
- const char* sparc_version() { return version; }
- void print_label(intptr_t value);
- void print_raw(char* str) { output->print_raw(str); }
- void print(char* format, ...);
- char* string_for_offset(intptr_t value);
- char* string_for_constant(unsigned char* pc, intptr_t value, int is_decimal);
-};
-
-
-void sparc_env::print_address(address adr, outputStream* st) {
- if (!Universe::is_fully_initialized()) {
- st->print(INTPTR_FORMAT, (intptr_t)adr);
- return;
- }
- if (StubRoutines::contains(adr)) {
- StubCodeDesc *desc = StubCodeDesc::desc_for(adr);
- if (desc == NULL)
- desc = StubCodeDesc::desc_for(adr + frame::pc_return_offset);
- if (desc == NULL)
- st->print("Unknown stub at " INTPTR_FORMAT, adr);
- else {
- st->print("Stub::%s", desc->name());
- if (desc->begin() != adr)
- st->print("%+d 0x%p",adr - desc->begin(), adr);
- else if (WizardMode) st->print(" " INTPTR_FORMAT, adr);
- }
- } else {
- BarrierSet* bs = Universe::heap()->barrier_set();
- if (bs->kind() == BarrierSet::CardTableModRef &&
- adr == (address)((CardTableModRefBS*)(bs))->byte_map_base) {
- st->print("word_map_base");
- if (WizardMode) st->print(" " INTPTR_FORMAT, (intptr_t)adr);
- } else {
- st->print(INTPTR_FORMAT, (intptr_t)adr);
- }
- }
-}
-
-
-// called by the disassembler to print out jump addresses
-void sparc_env::print_label(intptr_t value) {
- print_address((address) value, output);
-}
-
-void sparc_env::print(char* format, ...) {
- va_list ap;
- va_start(ap, format);
- output->vprint(format, ap);
- va_end(ap);
-}
-
-char* sparc_env::string_for_offset(intptr_t value) {
- stringStream st;
- print_address((address) value, &st);
- return st.as_string();
-}
-
-char* sparc_env::string_for_constant(unsigned char* pc, intptr_t value, int is_decimal) {
- stringStream st;
- oop obj;
- if (code && (obj = code->embeddedOop_at(pc)) != NULL) {
- obj->print_value_on(&st);
- } else
- {
- print_address((address) value, &st);
- }
- return st.as_string();
-}
-
-
-address Disassembler::decode_instruction(address start, DisassemblerEnv* env) {
- const char* version = ((sparc_env*)env)->sparc_version();
- return ((print_insn_sparc_t*) _print_insn_sparc)(start, env, version);
-}
-
-
-const int show_bytes = false; // for disassembler debugging
-
-
-void Disassembler::decode(CodeBlob* cb, outputStream* st) {
- st = st ? st : tty;
- st->print_cr("Decoding CodeBlob " INTPTR_FORMAT, cb);
- decode(cb->instructions_begin(), cb->instructions_end(), st);
-}
-
-
-void Disassembler::decode(u_char* begin, u_char* end, outputStream* st) {
- assert ((((intptr_t)begin | (intptr_t)end) % sizeof(int) == 0), "misaligned insn addr");
- st = st ? st : tty;
- if (!load_library()) {
- st->print_cr("Could not load disassembler");
- return;
- }
- sparc_env env(NULL, st);
- unsigned char* p = (unsigned char*) begin;
- CodeBlob* cb = CodeCache::find_blob_unsafe(begin);
- while (p < (unsigned char*) end && p) {
- if (cb != NULL) {
- cb->print_block_comment(st, (intptr_t)(p - cb->instructions_begin()));
- }
-
- unsigned char* p0 = p;
- st->print(INTPTR_FORMAT ": ", p);
- p = decode_instruction(p, &env);
- if (show_bytes && p) {
- st->print("\t\t\t");
- while (p0 < p) { st->print("%08lx ", *(int*)p0); p0 += sizeof(int); }
- }
- st->cr();
- }
-}
-
-
-void Disassembler::decode(nmethod* nm, outputStream* st) {
- st = st ? st : tty;
-
- st->print_cr("Decoding compiled method " INTPTR_FORMAT ":", nm);
- st->print("Code:");
- st->cr();
-
- if (!load_library()) {
- st->print_cr("Could not load disassembler");
- return;
- }
- sparc_env env(nm, st);
- unsigned char* p = nm->instructions_begin();
- unsigned char* end = nm->instructions_end();
- assert ((((intptr_t)p | (intptr_t)end) % sizeof(int) == 0), "misaligned insn addr");
-
- unsigned char *p1 = p;
- int total_bucket_count = 0;
- while (p1 < end && p1) {
- unsigned char *p0 = p1;
- ++p1;
- address bucket_pc = FlatProfiler::bucket_start_for(p1);
- if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p1)
- total_bucket_count += FlatProfiler::bucket_count_for(p0);
- }
-
- while (p < end && p) {
- if (p == nm->entry_point()) st->print_cr("[Entry Point]");
- if (p == nm->verified_entry_point()) st->print_cr("[Verified Entry Point]");
- if (p == nm->exception_begin()) st->print_cr("[Exception Handler]");
- if (p == nm->stub_begin()) st->print_cr("[Stub Code]");
- if (p == nm->consts_begin()) st->print_cr("[Constants]");
- nm->print_block_comment(st, (intptr_t)(p - nm->instructions_begin()));
- unsigned char* p0 = p;
- st->print(" " INTPTR_FORMAT ": ", p);
- p = decode_instruction(p, &env);
- nm->print_code_comment_on(st, 40, p0, p);
- st->cr();
- // Output pc bucket ticks if we have any
- address bucket_pc = FlatProfiler::bucket_start_for(p);
- if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p) {
- int bucket_count = FlatProfiler::bucket_count_for(p0);
- tty->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_bucket_count, bucket_count);
- tty->cr();
- }
- }
-}
-
-#endif // PRODUCT
--- a/hotspot/src/cpu/sparc/vm/disassembler_sparc.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/sparc/vm/disassembler_sparc.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright 1997-1999 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -22,30 +22,11 @@
*
*/
-// The disassembler prints out sparc code annotated
-// with Java specific information.
+ static int pd_instruction_alignment() {
+ return sizeof(int);
+ }
-class Disassembler {
-#ifndef PRODUCT
- private:
- // points to the library.
- static void* _library;
- // points to the print_insn_sparc function.
- static dll_func _print_insn_sparc;
- // tries to load library and return whether it succedded.
- static bool load_library();
- // decodes one instruction and return the start of the next instruction.
- static address decode_instruction(address start, DisassemblerEnv* env);
-#endif
- public:
- static void decode(CodeBlob *cb, outputStream* st = NULL) PRODUCT_RETURN;
- static void decode(nmethod* nm, outputStream* st = NULL) PRODUCT_RETURN;
- static void decode(u_char* begin, u_char* end, outputStream* st = NULL) PRODUCT_RETURN;
-};
-
-//Reconciliation History
-// 1.9 98/04/29 10:45:51 disassembler_i486.hpp
-// 1.10 98/05/11 16:47:20 disassembler_i486.hpp
-// 1.12 99/06/22 16:37:37 disassembler_i486.hpp
-// 1.13 99/08/06 10:09:04 disassembler_i486.hpp
-//End
+ static const char* pd_cpu_opts() {
+ return (VM_Version::v9_instructions_work()?
+ (VM_Version::v8_instructions_work()? "" : "v9only") : "v8only");
+ }
--- a/hotspot/src/cpu/sparc/vm/frame_sparc.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/sparc/vm/frame_sparc.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -157,22 +157,158 @@
check_location_valid();
}
+bool frame::safe_for_sender(JavaThread *thread) {
-bool frame::safe_for_sender(JavaThread *thread) {
- address sp = (address)_sp;
- if (sp != NULL &&
- (sp <= thread->stack_base() && sp >= thread->stack_base() - thread->stack_size())) {
- // Unfortunately we can only check frame complete for runtime stubs and nmethod
- // other generic buffer blobs are more problematic so we just assume they are
- // ok. adapter blobs never have a frame complete and are never ok.
- if (_cb != NULL && !_cb->is_frame_complete_at(_pc)) {
- if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
- return false;
- }
+ address _SP = (address) sp();
+ address _FP = (address) fp();
+ address _UNEXTENDED_SP = (address) unextended_sp();
+ // sp must be within the stack
+ bool sp_safe = (_SP <= thread->stack_base()) &&
+ (_SP >= thread->stack_base() - thread->stack_size());
+
+ if (!sp_safe) {
+ return false;
+ }
+
+ // unextended sp must be within the stack and above or equal sp
+ bool unextended_sp_safe = (_UNEXTENDED_SP <= thread->stack_base()) &&
+ (_UNEXTENDED_SP >= _SP);
+
+ if (!unextended_sp_safe) return false;
+
+ // an fp must be within the stack and above (but not equal) sp
+ bool fp_safe = (_FP <= thread->stack_base()) &&
+ (_FP > _SP);
+
+ // We know sp/unextended_sp are safe only fp is questionable here
+
+ // If the current frame is known to the code cache then we can attempt to
+ // to construct the sender and do some validation of it. This goes a long way
+ // toward eliminating issues when we get in frame construction code
+
+ if (_cb != NULL ) {
+
+ // First check if frame is complete and tester is reliable
+ // Unfortunately we can only check frame complete for runtime stubs and nmethod
+ // other generic buffer blobs are more problematic so we just assume they are
+ // ok. adapter blobs never have a frame complete and are never ok.
+
+ if (!_cb->is_frame_complete_at(_pc)) {
+ if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
+ return false;
+ }
+ }
+
+ // Entry frame checks
+ if (is_entry_frame()) {
+ // an entry frame must have a valid fp.
+
+ if (!fp_safe) {
+ return false;
}
- return true;
+
+ // Validate the JavaCallWrapper an entry frame must have
+
+ address jcw = (address)entry_frame_call_wrapper();
+
+ bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > _FP);
+
+ return jcw_safe;
+
+ }
+
+ intptr_t* younger_sp = sp();
+ intptr_t* _SENDER_SP = sender_sp(); // sender is actually just _FP
+ bool adjusted_stack = is_interpreted_frame();
+
+ address sender_pc = (address)younger_sp[I7->sp_offset_in_saved_window()] + pc_return_offset;
+
+
+ // We must always be able to find a recognizable pc
+ CodeBlob* sender_blob = CodeCache::find_blob_unsafe(sender_pc);
+ if (sender_pc == NULL || sender_blob == NULL) {
+ return false;
+ }
+
+ // It should be safe to construct the sender though it might not be valid
+
+ frame sender(_SENDER_SP, younger_sp, adjusted_stack);
+
+ // Do we have a valid fp?
+ address sender_fp = (address) sender.fp();
+
+ // an fp must be within the stack and above (but not equal) current frame's _FP
+
+ bool sender_fp_safe = (sender_fp <= thread->stack_base()) &&
+ (sender_fp > _FP);
+
+ if (!sender_fp_safe) {
+ return false;
+ }
+
+
+ // If the potential sender is the interpreter then we can do some more checking
+ if (Interpreter::contains(sender_pc)) {
+ return sender.is_interpreted_frame_valid(thread);
+ }
+
+ // Could just be some random pointer within the codeBlob
+ if (!sender.cb()->instructions_contains(sender_pc)) return false;
+
+ // We should never be able to see an adapter if the current frame is something from code cache
+
+ if ( sender_blob->is_adapter_blob()) {
+ return false;
+ }
+
+ if( sender.is_entry_frame()) {
+ // Validate the JavaCallWrapper an entry frame must have
+
+ address jcw = (address)sender.entry_frame_call_wrapper();
+
+ bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > sender_fp);
+
+ return jcw_safe;
+ }
+
+ // If the frame size is 0 something is bad because every nmethod has a non-zero frame size
+ // because you must allocate window space
+
+ if (sender_blob->frame_size() == 0) {
+ assert(!sender_blob->is_nmethod(), "should count return address at least");
+ return false;
+ }
+
+ // The sender should positively be an nmethod or call_stub. On sparc we might in fact see something else.
+ // The cause of this is because at a save instruction the O7 we get is a leftover from an earlier
+ // window use. So if a runtime stub creates two frames (common in fastdebug/jvmg) then we see the
+ // stale pc. So if the sender blob is not something we'd expect we have little choice but to declare
+ // the stack unwalkable. pd_get_top_frame_for_signal_handler tries to recover from this by unwinding
+ // that initial frame and retrying.
+
+ if (!sender_blob->is_nmethod()) {
+ return false;
+ }
+
+ // Could put some more validation for the potential non-interpreted sender
+ // frame we'd create by calling sender if I could think of any. Wait for next crash in forte...
+
+ // One idea is seeing if the sender_pc we have is one that we'd expect to call to current cb
+
+ // We've validated the potential sender that would be created
+
+ return true;
+
}
- return false;
+
+ // Must be native-compiled frame. Since sender will try and use fp to find
+ // linkages it must be safe
+
+ if (!fp_safe) return false;
+
+ // could try and do some more potential verification of native frame if we could think of some...
+
+ return true;
}
// constructors
@@ -450,7 +586,7 @@
}
-bool frame::is_interpreted_frame_valid() const {
+bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
#ifdef CC_INTERP
// Is there anything to do?
#else
@@ -462,6 +598,7 @@
if (sp() == 0 || (intptr_t(sp()) & (2*wordSize-1)) != 0) {
return false;
}
+
const intptr_t interpreter_frame_initial_sp_offset = interpreter_frame_vm_local_words;
if (fp() + interpreter_frame_initial_sp_offset < sp()) {
return false;
@@ -471,9 +608,43 @@
if (fp() <= sp()) { // this attempts to deal with unsigned comparison above
return false;
}
- if (fp() - sp() > 4096) { // stack frames shouldn't be large.
+ // do some validation of frame elements
+
+ // first the method
+
+ methodOop m = *interpreter_frame_method_addr();
+
+ // validate the method we'd find in this potential sender
+ if (!Universe::heap()->is_valid_method(m)) return false;
+
+ // stack frames shouldn't be much larger than max_stack elements
+
+ if (fp() - sp() > 1024 + m->max_stack()*Interpreter::stackElementSize()) {
return false;
}
+
+ // validate bci/bcx
+
+ intptr_t bcx = interpreter_frame_bcx();
+ if (m->validate_bci_from_bcx(bcx) < 0) {
+ return false;
+ }
+
+ // validate constantPoolCacheOop
+
+ constantPoolCacheOop cp = *interpreter_frame_cache_addr();
+
+ if (cp == NULL ||
+ !Space::is_aligned(cp) ||
+ !Universe::heap()->is_permanent((void*)cp)) return false;
+
+ // validate locals
+
+ address locals = (address) *interpreter_frame_locals_addr();
+
+ if (locals > thread->stack_base() || locals < (address) fp()) return false;
+
+ // We'd have to be pretty unlucky to be mislead at this point
#endif /* CC_INTERP */
return true;
}
--- a/hotspot/src/cpu/x86/vm/disassembler_x86.cpp Thu Apr 10 15:49:16 2008 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,201 +0,0 @@
-/*
- * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- */
-
-# include "incls/_precompiled.incl"
-# include "incls/_disassembler_x86.cpp.incl"
-
-#ifndef PRODUCT
-
-void* Disassembler::_library = NULL;
-Disassembler::decode_func Disassembler::_decode_instruction = NULL;
-
-bool Disassembler::load_library() {
- if (_library == NULL) {
- char buf[1024];
- char ebuf[1024];
- sprintf(buf, "disassembler%s", os::dll_file_extension());
- _library = hpi::dll_load(buf, ebuf, sizeof ebuf);
- if (_library != NULL) {
- tty->print_cr("Loaded disassembler");
- _decode_instruction = CAST_TO_FN_PTR(Disassembler::decode_func, hpi::dll_lookup(_library, "decode_instruction"));
- }
- }
- return (_library != NULL) && (_decode_instruction != NULL);
-}
-
-class x86_env : public DisassemblerEnv {
- private:
- nmethod* code;
- outputStream* output;
- public:
- x86_env(nmethod* rcode, outputStream* routput) {
- code = rcode;
- output = routput;
- }
- void print_label(intptr_t value);
- void print_raw(char* str) { output->print_raw(str); }
- void print(char* format, ...);
- char* string_for_offset(intptr_t value);
- char* string_for_constant(unsigned char* pc, intptr_t value, int is_decimal);
-};
-
-
-void x86_env::print_label(intptr_t value) {
- if (!Universe::is_fully_initialized()) {
- output->print(INTPTR_FORMAT, value);
- return;
- }
- address adr = (address) value;
- if (StubRoutines::contains(adr)) {
- StubCodeDesc* desc = StubCodeDesc::desc_for(adr);
- const char * desc_name = "unknown stub";
- if (desc != NULL) {
- desc_name = desc->name();
- }
- output->print("Stub::%s", desc_name);
- if (WizardMode) output->print(" " INTPTR_FORMAT, value);
- } else {
- output->print(INTPTR_FORMAT, value);
- }
-}
-
-void x86_env::print(char* format, ...) {
- va_list ap;
- va_start(ap, format);
- output->vprint(format, ap);
- va_end(ap);
-}
-
-char* x86_env::string_for_offset(intptr_t value) {
- stringStream st;
- if (!Universe::is_fully_initialized()) {
- st.print(INTX_FORMAT, value);
- return st.as_string();
- }
- BarrierSet* bs = Universe::heap()->barrier_set();
- BarrierSet::Name bsn = bs->kind();
- if (bs->kind() == BarrierSet::CardTableModRef &&
- (jbyte*) value == ((CardTableModRefBS*)(bs))->byte_map_base) {
- st.print("word_map_base");
- } else {
- st.print(INTX_FORMAT, value);
- }
- return st.as_string();
-}
-
-char* x86_env::string_for_constant(unsigned char* pc, intptr_t value, int is_decimal) {
- stringStream st;
- oop obj = NULL;
- if (code && ((obj = code->embeddedOop_at(pc)) != NULL)) {
- obj->print_value_on(&st);
- } else {
- if (is_decimal == 1) {
- st.print(INTX_FORMAT, value);
- } else {
- st.print(INTPTR_FORMAT, value);
- }
- }
- return st.as_string();
-}
-
-
-
-address Disassembler::decode_instruction(address start, DisassemblerEnv* env) {
- return ((decode_func) _decode_instruction)(start, env);
-}
-
-
-void Disassembler::decode(CodeBlob* cb, outputStream* st) {
- st = st ? st : tty;
- st->print_cr("Decoding CodeBlob " INTPTR_FORMAT, cb);
- decode(cb->instructions_begin(), cb->instructions_end(), st);
-}
-
-
-void Disassembler::decode(u_char* begin, u_char* end, outputStream* st) {
- st = st ? st : tty;
-
- const int show_bytes = false; // for disassembler debugging
-
- if (!load_library()) {
- st->print_cr("Could not load disassembler");
- return;
- }
-
- x86_env env(NULL, st);
- unsigned char* p = (unsigned char*) begin;
- CodeBlob* cb = CodeCache::find_blob_unsafe(begin);
- while (p < (unsigned char*) end) {
- if (cb != NULL) {
- cb->print_block_comment(st, (intptr_t)(p - cb->instructions_begin()));
- }
-
- unsigned char* p0 = p;
- st->print(" " INTPTR_FORMAT ": ", p);
- p = decode_instruction(p, &env);
- if (show_bytes) {
- st->print("\t\t\t");
- while (p0 < p) st->print("%x ", *p0++);
- }
- st->cr();
- }
-}
-
-
-void Disassembler::decode(nmethod* nm, outputStream* st) {
- st = st ? st : tty;
-
- st->print_cr("Decoding compiled method " INTPTR_FORMAT ":", nm);
- st->print("Code:");
- st->cr();
-
- if (!load_library()) {
- st->print_cr("Could not load disassembler");
- return;
- }
- x86_env env(nm, st);
- unsigned char* p = nm->instructions_begin();
- unsigned char* end = nm->instructions_end();
- while (p < end) {
- if (p == nm->entry_point()) st->print_cr("[Entry Point]");
- if (p == nm->verified_entry_point()) st->print_cr("[Verified Entry Point]");
- if (p == nm->exception_begin()) st->print_cr("[Exception Handler]");
- if (p == nm->stub_begin()) st->print_cr("[Stub Code]");
- if (p == nm->consts_begin()) st->print_cr("[Constants]");
- nm->print_block_comment(st, (intptr_t)(p - nm->instructions_begin()));
- unsigned char* p0 = p;
- st->print(" " INTPTR_FORMAT ": ", p);
- p = decode_instruction(p, &env);
- nm->print_code_comment_on(st, 40, p0, p);
- st->cr();
- // Output pc bucket ticks if we have any
- address bucket_pc = FlatProfiler::bucket_start_for(p);
- if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p) {
- int bucket_count = FlatProfiler::bucket_count_for(bucket_pc);
- tty->print_cr("[%d]", bucket_count);
- }
- }
-}
-
-#endif // PRODUCT
--- a/hotspot/src/cpu/x86/vm/disassembler_x86.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/x86/vm/disassembler_x86.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -1,5 +1,5 @@
/*
- * Copyright 1997-1999 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -22,24 +22,10 @@
*
*/
-// The disassembler prints out intel 386 code annotated
-// with Java specific information.
+ static int pd_instruction_alignment() {
+ return 1;
+ }
-class Disassembler {
-#ifndef PRODUCT
- private:
- typedef address (*decode_func)(address start, DisassemblerEnv* env);
- // points the library.
- static void* _library;
- // points to the decode function.
- static decode_func _decode_instruction;
- // tries to load library and return whether it succedded.
- static bool load_library();
- // decodes one instruction and return the start of the next instruction.
- static address decode_instruction(address start, DisassemblerEnv* env);
-#endif
- public:
- static void decode(CodeBlob *cb, outputStream* st = NULL) PRODUCT_RETURN;
- static void decode(nmethod* nm, outputStream* st = NULL) PRODUCT_RETURN;
- static void decode(u_char* begin, u_char* end, outputStream* st = NULL) PRODUCT_RETURN;
-};
+ static const char* pd_cpu_opts() {
+ return "";
+ }
--- a/hotspot/src/cpu/x86/vm/frame_x86.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/x86/vm/frame_x86.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -37,39 +37,181 @@
address sp = (address)_sp;
address fp = (address)_fp;
address unextended_sp = (address)_unextended_sp;
- bool sp_safe = (sp != NULL &&
- (sp <= thread->stack_base()) &&
- (sp >= thread->stack_base() - thread->stack_size()));
- bool unextended_sp_safe = (unextended_sp != NULL &&
- (unextended_sp <= thread->stack_base()) &&
- (unextended_sp >= thread->stack_base() - thread->stack_size()));
- bool fp_safe = (fp != NULL &&
- (fp <= thread->stack_base()) &&
- (fp >= thread->stack_base() - thread->stack_size()));
- if (sp_safe && unextended_sp_safe && fp_safe) {
+ // sp must be within the stack
+ bool sp_safe = (sp <= thread->stack_base()) &&
+ (sp >= thread->stack_base() - thread->stack_size());
+
+ if (!sp_safe) {
+ return false;
+ }
+
+ // unextended sp must be within the stack and above or equal sp
+ bool unextended_sp_safe = (unextended_sp <= thread->stack_base()) &&
+ (unextended_sp >= sp);
+
+ if (!unextended_sp_safe) {
+ return false;
+ }
+
+ // an fp must be within the stack and above (but not equal) sp
+ bool fp_safe = (fp <= thread->stack_base()) && (fp > sp);
+
+ // We know sp/unextended_sp are safe only fp is questionable here
+
+ // If the current frame is known to the code cache then we can attempt to
+ // to construct the sender and do some validation of it. This goes a long way
+ // toward eliminating issues when we get in frame construction code
+
+ if (_cb != NULL ) {
+
+ // First check if frame is complete and tester is reliable
// Unfortunately we can only check frame complete for runtime stubs and nmethod
// other generic buffer blobs are more problematic so we just assume they are
// ok. adapter blobs never have a frame complete and are never ok.
- if (_cb != NULL && !_cb->is_frame_complete_at(_pc)) {
+
+ if (!_cb->is_frame_complete_at(_pc)) {
if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
return false;
}
}
+ // Entry frame checks
+ if (is_entry_frame()) {
+ // an entry frame must have a valid fp.
+
+ if (!fp_safe) return false;
+
+ // Validate the JavaCallWrapper an entry frame must have
+
+ address jcw = (address)entry_frame_call_wrapper();
+
+ bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > fp);
+
+ return jcw_safe;
+
+ }
+
+ intptr_t* sender_sp = NULL;
+ address sender_pc = NULL;
+
+ if (is_interpreted_frame()) {
+ // fp must be safe
+ if (!fp_safe) {
+ return false;
+ }
+
+ sender_pc = (address) this->fp()[return_addr_offset];
+ sender_sp = (intptr_t*) addr_at(sender_sp_offset);
+
+ } else {
+ // must be some sort of compiled/runtime frame
+ // fp does not have to be safe (although it could be check for c1?)
+
+ sender_sp = _unextended_sp + _cb->frame_size();
+ // On Intel the return_address is always the word on the stack
+ sender_pc = (address) *(sender_sp-1);
+ }
+
+ // We must always be able to find a recognizable pc
+ CodeBlob* sender_blob = CodeCache::find_blob_unsafe(sender_pc);
+ if (sender_pc == NULL || sender_blob == NULL) {
+ return false;
+ }
+
+
+ // If the potential sender is the interpreter then we can do some more checking
+ if (Interpreter::contains(sender_pc)) {
+
+ // ebp is always saved in a recognizable place in any code we generate. However
+ // only if the sender is interpreted/call_stub (c1 too?) are we certain that the saved ebp
+ // is really a frame pointer.
+
+ intptr_t *saved_fp = (intptr_t*)*(sender_sp - frame::sender_sp_offset);
+ bool saved_fp_safe = ((address)saved_fp <= thread->stack_base()) && (saved_fp > sender_sp);
+
+ if (!saved_fp_safe) {
+ return false;
+ }
+
+ // construct the potential sender
+
+ frame sender(sender_sp, saved_fp, sender_pc);
+
+ return sender.is_interpreted_frame_valid(thread);
+
+ }
+
+ // Could just be some random pointer within the codeBlob
+
+ if (!sender_blob->instructions_contains(sender_pc)) return false;
+
+ // We should never be able to see an adapter if the current frame is something from code cache
+
+ if ( sender_blob->is_adapter_blob()) {
+ return false;
+ }
+
+ // Could be the call_stub
+
+ if (StubRoutines::returns_to_call_stub(sender_pc)) {
+ intptr_t *saved_fp = (intptr_t*)*(sender_sp - frame::sender_sp_offset);
+ bool saved_fp_safe = ((address)saved_fp <= thread->stack_base()) && (saved_fp > sender_sp);
+
+ if (!saved_fp_safe) {
+ return false;
+ }
+
+ // construct the potential sender
+
+ frame sender(sender_sp, saved_fp, sender_pc);
+
+ // Validate the JavaCallWrapper an entry frame must have
+ address jcw = (address)sender.entry_frame_call_wrapper();
+
+ bool jcw_safe = (jcw <= thread->stack_base()) && ( jcw > (address)sender.fp());
+
+ return jcw_safe;
+ }
+
+ // If the frame size is 0 something is bad because every nmethod has a non-zero frame size
+ // because the return address counts against the callee's frame.
+
+ if (sender_blob->frame_size() == 0) {
+ assert(!sender_blob->is_nmethod(), "should count return address at least");
+ return false;
+ }
+
+ // We should never be able to see anything here except an nmethod. If something in the
+ // code cache (current frame) is called by an entity within the code cache that entity
+ // should not be anything but the call stub (already covered), the interpreter (already covered)
+ // or an nmethod.
+
+ assert(sender_blob->is_nmethod(), "Impossible call chain");
+
+ // Could put some more validation for the potential non-interpreted sender
+ // frame we'd create by calling sender if I could think of any. Wait for next crash in forte...
+
+ // One idea is seeing if the sender_pc we have is one that we'd expect to call to current cb
+
+ // We've validated the potential sender that would be created
return true;
}
- // Note: fp == NULL is not really a prerequisite for this to be safe to
- // walk for c2. However we've modified the code such that if we get
- // a failure with fp != NULL that we then try with FP == NULL.
- // This is basically to mimic what a last_frame would look like if
- // c2 had generated it.
- if (sp_safe && unextended_sp_safe && fp == NULL) {
- // frame must be complete if fp == NULL as fp == NULL is only sensible
- // if we are looking at a nmethod and frame complete assures us of that.
- if (_cb != NULL && _cb->is_frame_complete_at(_pc) && _cb->is_compiled_by_c2()) {
- return true;
- }
+
+ // Must be native-compiled frame. Since sender will try and use fp to find
+ // linkages it must be safe
+
+ if (!fp_safe) {
+ return false;
}
- return false;
+
+ // Will the pc we fetch be non-zero (which we'll find at the oldest frame)
+
+ if ( (address) this->fp()[return_addr_offset] == NULL) return false;
+
+
+ // could try and do some more potential verification of native frame if we could think of some...
+
+ return true;
+
}
@@ -292,7 +434,7 @@
// nothing done here now
}
-bool frame::is_interpreted_frame_valid() const {
+bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
// QQQ
#ifdef CC_INTERP
#else
@@ -312,9 +454,45 @@
if (fp() <= sp()) { // this attempts to deal with unsigned comparison above
return false;
}
- if (fp() - sp() > 4096) { // stack frames shouldn't be large.
+
+ // do some validation of frame elements
+
+ // first the method
+
+ methodOop m = *interpreter_frame_method_addr();
+
+ // validate the method we'd find in this potential sender
+ if (!Universe::heap()->is_valid_method(m)) return false;
+
+ // stack frames shouldn't be much larger than max_stack elements
+
+ if (fp() - sp() > 1024 + m->max_stack()*Interpreter::stackElementSize()) {
return false;
}
+
+ // validate bci/bcx
+
+ intptr_t bcx = interpreter_frame_bcx();
+ if (m->validate_bci_from_bcx(bcx) < 0) {
+ return false;
+ }
+
+ // validate constantPoolCacheOop
+
+ constantPoolCacheOop cp = *interpreter_frame_cache_addr();
+
+ if (cp == NULL ||
+ !Space::is_aligned(cp) ||
+ !Universe::heap()->is_permanent((void*)cp)) return false;
+
+ // validate locals
+
+ address locals = (address) *interpreter_frame_locals_addr();
+
+ if (locals > thread->stack_base() || locals < (address) fp()) return false;
+
+ // We'd have to be pretty unlucky to be mislead at this point
+
#endif // CC_INTERP
return true;
}
--- a/hotspot/src/cpu/x86/vm/frame_x86.inline.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/x86/vm/frame_x86.inline.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -72,15 +72,20 @@
_unextended_sp = sp;
_fp = fp;
_pc = (address)(sp[-1]);
- assert(_pc != NULL, "no pc?");
+
+ // Here's a sticky one. This constructor can be called via AsyncGetCallTrace
+ // when last_Java_sp is non-null but the pc fetched is junk. If we are truly
+ // unlucky the junk value could be to a zombied method and we'll die on the
+ // find_blob call. This is also why we can have no asserts on the validity
+ // of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
+ // -> pd_last_frame should use a specialized version of pd_last_frame which could
+ // call a specilaized frame constructor instead of this one.
+ // Then we could use the assert below. However this assert is of somewhat dubious
+ // value.
+ // assert(_pc != NULL, "no pc?");
+
_cb = CodeCache::find_blob(_pc);
- // In case of native stubs, the pc retreived here might be
- // wrong. (the _last_native_pc will have the right value)
- // So do not put add any asserts on the _pc here.
- // QQQ The above comment is wrong and has been wrong for years. This constructor
- // should (and MUST) not be called in that situation. In the native situation
- // the pc should be supplied to the constructor.
_deopt_state = not_deoptimized;
if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
_pc = (((nmethod*)_cb)->get_original_pc(this));
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -1632,7 +1632,7 @@
// We need to prepare to execute the OSR method. First we must
// migrate the locals and monitors off of the stack.
- __ movl(rsi, rax); // save the nmethod
+ __ movl(rbx, rax); // save the nmethod
const Register thread = rcx;
__ get_thread(thread);
@@ -1688,7 +1688,7 @@
__ pushl(rdi);
// and begin the OSR nmethod
- __ jmp(Address(rsi, nmethod::osr_entry_point_offset()));
+ __ jmp(Address(rbx, nmethod::osr_entry_point_offset()));
}
}
}
--- a/hotspot/src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/os_cpu/solaris_sparc/vm/thread_solaris_sparc.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -50,17 +50,6 @@
// even if isInJava == true. It should be more reliable than
// ucontext info.
if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
-#if 0
- // This sanity check may not be needed with the new frame
- // walking code. Remove it for now.
- if (!jt->frame_anchor()->post_Java_state_is_pc()
- && frame::next_younger_sp_or_null(last_Java_sp(),
- jt->frame_anchor()->post_Java_sp()) == NULL) {
- // the anchor contains an SP, but the frame is not walkable
- // because post_Java_sp isn't valid relative to last_Java_sp
- return false;
- }
-#endif
*fr_addr = jt->pd_last_frame();
return true;
}
@@ -77,23 +66,59 @@
return false;
}
+ frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
+
// we were running Java code when SIGPROF came in
if (isInJava) {
+
+
+ // If the frame we got is safe then it is most certainly valid
+ if (ret_frame.safe_for_sender(jt)) {
+ *fr_addr = ret_frame;
+ return true;
+ }
+
+ // If it isn't safe then we can try several things to try and get
+ // a good starting point.
+ //
+ // On sparc the frames are almost certainly walkable in the sense
+ // of sp/fp linkages. However because of recycling of windows if
+ // a piece of code does multiple save's where the initial save creates
+ // a real frame with a return pc and the succeeding save's are used to
+ // simply get free registers and have no real pc then the pc linkage on these
+ // "inner" temporary frames will be bogus.
+ // Since there is in general only a nesting level like
+ // this one deep in general we'll try and unwind such an "inner" frame
+ // here ourselves and see if it makes sense
+
+ frame unwind_frame(ret_frame.fp(), frame::unpatchable, addr.pc());
+
+ if (unwind_frame.safe_for_sender(jt)) {
+ *fr_addr = unwind_frame;
+ return true;
+ }
+
+ // Well that didn't work. Most likely we're toast on this tick
+ // The previous code would try this. I think it is dubious in light
+ // of changes to safe_for_sender and the unwind trick above but
+ // if it gets us a safe frame who wants to argue.
+
// If we have a last_Java_sp, then the SIGPROF signal caught us
// right when we were transitioning from _thread_in_Java to a new
// JavaThreadState. We use last_Java_sp instead of the sp from
// the ucontext since it should be more reliable.
+
if (jt->has_last_Java_frame()) {
ret_sp = jt->last_Java_sp();
+ frame ret_frame2(ret_sp, frame::unpatchable, addr.pc());
+ if (ret_frame2.safe_for_sender(jt)) {
+ *fr_addr = ret_frame2;
+ return true;
+ }
}
- // Implied else: we don't have a last_Java_sp so we use what we
- // got from the ucontext.
- frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
- if (!ret_frame.safe_for_sender(jt)) {
- // nothing else to try if the frame isn't good
- return false;
- }
+ // This is the best we can do. We will only be able to decode the top frame
+
*fr_addr = ret_frame;
return true;
}
@@ -105,17 +130,13 @@
if (jt->has_last_Java_frame()) {
assert(!jt->frame_anchor()->walkable(), "case covered above");
- if (jt->thread_state() == _thread_in_native) {
- frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
- if (!ret_frame.safe_for_sender(jt)) {
- // nothing else to try if the frame isn't good
- return false;
- }
- *fr_addr = ret_frame;
- return true;
- }
+ frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
+ *fr_addr = ret_frame;
+ return true;
}
- // nothing else to try
- return false;
+ // nothing else to try but what we found initially
+
+ *fr_addr = ret_frame;
+ return true;
}
--- a/hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -212,7 +212,8 @@
CAST_FROM_FN_PTR(address, os::current_frame));
if (os::is_first_C_frame(&myframe)) {
// stack is not walkable
- return frame(NULL, NULL, NULL);
+ frame ret; // This will be a null useless frame
+ return ret;
} else {
return os::get_sender_for_C_frame(&myframe);
}
--- a/hotspot/src/os_cpu/solaris_x86/vm/thread_solaris_x86.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/os_cpu/solaris_x86/vm/thread_solaris_x86.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -32,49 +32,53 @@
assert(Thread::current() == this, "caller must be current thread");
assert(this->is_Java_thread(), "must be JavaThread");
-
JavaThread* jt = (JavaThread *)this;
- // If we have a last_Java_frame, then we should use it even if
- // isInJava == true. It should be more reliable than ucontext info.
+ // last_Java_frame is always walkable and safe use it if we have it
+
if (jt->has_last_Java_frame()) {
*fr_addr = jt->pd_last_frame();
return true;
}
- // At this point, we don't have a last_Java_frame, so
- // we try to glean some information out of the ucontext
- // if we were running Java code when SIGPROF came in.
- if (isInJava) {
- ucontext_t* uc = (ucontext_t*) ucontext;
+ ucontext_t* uc = (ucontext_t*) ucontext;
- intptr_t* ret_fp;
- intptr_t* ret_sp;
- ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc,
- &ret_sp, &ret_fp);
- if (addr.pc() == NULL || ret_sp == NULL ) {
- // ucontext wasn't useful
- return false;
- }
+ // We always want to use the initial frame we create from the ucontext as
+ // it certainly signals where we currently are. However that frame may not
+ // be safe for calling sender. In that case if we have a last_Java_frame
+ // then the forte walker will switch to that frame as the virtual sender
+ // for the frame we create here which is not sender safe.
- frame ret_frame(ret_sp, ret_fp, addr.pc());
- if (!ret_frame.safe_for_sender(jt)) {
-#ifdef COMPILER2
- frame ret_frame2(ret_sp, NULL, addr.pc());
- if (!ret_frame2.safe_for_sender(jt)) {
- // nothing else to try if the frame isn't good
- return false;
- }
- ret_frame = ret_frame2;
-#else
- // nothing else to try if the frame isn't good
- return false;
-#endif /* COMPILER2 */
- }
- *fr_addr = ret_frame;
- return true;
+ intptr_t* ret_fp;
+ intptr_t* ret_sp;
+ ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp);
+
+ // Something would really have to be screwed up to get a NULL pc
+
+ if (addr.pc() == NULL ) {
+ assert(false, "NULL pc from signal handler!");
+ return false;
+
}
- // nothing else to try
- return false;
+ // If sp and fp are nonsense just leave them out
+
+ if ((address)ret_sp >= jt->stack_base() ||
+ (address)ret_sp < jt->stack_base() - jt->stack_size() ) {
+
+ ret_sp = NULL;
+ ret_fp = NULL;
+ } else {
+
+ // sp is reasonable is fp reasonable?
+ if ( (address)ret_fp >= jt->stack_base() || ret_fp < ret_sp) {
+ ret_fp = NULL;
+ }
+ }
+
+ frame ret_frame(ret_sp, ret_fp, addr.pc());
+
+ *fr_addr = ret_frame;
+ return true;
+
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/hsdis/Makefile Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,135 @@
+#
+# Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+# CA 95054 USA or visit www.sun.com if you need additional information or
+# have any questions.
+#
+#
+
+# Single gnu makefile for solaris, linux and windows (windows requires mks or
+# cygwin).
+
+ifeq ($(BINUTILS),)
+# Pop all the way out of the workspace to look for binutils.
+# ...You probably want to override this setting.
+BINUTILS = $(shell cd ../../../../..;pwd)/binutils-2.17-$(LIBARCH)
+endif
+
+# Default arch; it is changed below as needed.
+ARCH = i386
+OS = $(shell uname)
+
+CPPFLAGS += -I$(BINUTILS)/include -I$(BINUTILS)/bfd
+CPPFLAGS += -DHOTSPOT_LIB_ARCH=\"$(LIBARCH)\" -DLIBARCH_$(LIBARCH)
+CPPFLAGS += -DHOTSPOT_OS=\"$(OS)\" -DOS_$(OS)
+
+## OS = SunOS ##
+ifeq ($(OS),SunOS)
+ARCH = $(shell uname -p)
+OS = solaris
+CC = cc
+CCFLAGS += -Kpic -g
+CCFLAGS/amd64 += -xarch=amd64
+CCFLAGS/sparcv9 += -xarch=v9
+CCFLAGS += $(CCFLAGS/$(LIBARCH))
+DLDFLAGS += -G
+OUTFLAGS += -o $@
+LIB_EXT = .so
+else
+## OS = Linux ##
+ifeq ($(OS),Linux)
+CPU = $(shell uname -m)
+ifeq ($(CPU),ia64)
+ARCH = ia64
+else
+ifeq ($(CPU),x86_64)
+CCFLAGS += -fPIC
+endif # x86_64
+endif # ia64
+OS = linux
+CC = gcc
+CCFLAGS += -O
+DLDFLAGS += -shared
+OUTFLAGS += -o $@
+LIB_EXT = .so
+CPPFLAGS += -Iinclude -Iinclude/$(OS)_$(ARCH)/
+## OS = Windows ##
+else # !SunOS, !Linux => Windows
+OS = win
+CC = cl
+#CPPFLAGS += /D"WIN32" /D"_WINDOWS" /D"DEBUG" /D"NDEBUG"
+CCFLAGS += /nologo /MD /W3 /WX /O2 /Fo$(@:.dll=.obj) /Gi-
+CCFLAGS += -Iinclude -Iinclude/gnu -Iinclude/$(OS)_$(ARCH)
+CCFLAGS += /D"HOTSPOT_LIB_ARCH=\"$(LIBARCH)\""
+DLDFLAGS += /dll /subsystem:windows /incremental:no \
+ /export:decode_instruction
+OUTFLAGS += /link /out:$@
+LIB_EXT = .dll
+endif # Linux
+endif # SunOS
+
+LIBARCH = $(ARCH)
+ifdef LP64
+LIBARCH64/sparc = sparcv9
+LIBARCH64/i386 = amd64
+LIBARCH64 = $(LIBARCH64/$(ARCH))
+ifneq ($(LIBARCH64),)
+LIBARCH = $(LIBARCH64)
+endif # LIBARCH64/$(ARCH)
+endif # LP64
+
+TARGET_DIR = bin/$(OS)
+TARGET = $(TARGET_DIR)/hsdis-$(LIBARCH)$(LIB_EXT)
+
+SOURCE = hsdis.c
+
+LIBRARIES = $(BINUTILS)/bfd/libbfd.a \
+ $(BINUTILS)/opcodes/libopcodes.a \
+ $(BINUTILS)/libiberty/libiberty.a
+
+DEMO_TARGET = $(TARGET_DIR)/hsdis-demo-$(LIBARCH)
+DEMO_SOURCE = hsdis-demo.c
+
+.PHONY: all clean demo both
+
+all: $(TARGET) demo
+
+both: all all64
+
+%64:
+ $(MAKE) LP64=1 ${@:%64=%}
+
+demo: $(TARGET) $(DEMO_TARGET)
+
+$(LIBRARIES):
+ @echo "*** Please build binutils first; see ./README: ***"
+ @sed < ./README '1,/__________/d' | head -20
+ @echo "..."; exit 1
+
+$(TARGET): $(SOURCE) $(LIBS) $(LIBRARIES) $(TARGET_DIR)
+ $(CC) $(OUTFLAGS) $(CPPFLAGS) $(CCFLAGS) $(SOURCE) $(DLDFLAGS) $(LIBRARIES)
+
+$(DEMO_TARGET): $(DEMO_SOURCE) $(TARGET) $(TARGET_DIR)
+ $(CC) $(OUTFLAGS) $(CPPFLAGS) $(CCFLAGS) $(DEMO_SOURCE) $(LDFLAGS)
+
+$(TARGET_DIR):
+ [ -d $@ ] || mkdir -p $@
+
+clean:
+ rm -rf $(TARGET_DIR)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/hsdis/README Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,95 @@
+Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
+DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+
+This code is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License version 2 only, as
+published by the Free Software Foundation.
+
+This code is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+version 2 for more details (a copy is included in the LICENSE file that
+accompanied this code).
+
+You should have received a copy of the GNU General Public License version
+2 along with this work; if not, write to the Free Software Foundation,
+Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+CA 95054 USA or visit www.sun.com if you need additional information or
+have any questions.
+
+________________________________________________________________________
+
+'hsdis': A HotSpot plugin for disassembling dynamically generated code.
+
+The files in this directory (Makefile, hsdis.[ch], hsdis-demo.c)
+are built independently of the HotSpot JVM.
+
+To use the plugin with a JVM, you need a new version that can load it.
+If the product mode of your JVM does not accept -XX:+PrintAssembly,
+you do not have a version that is new enough.
+
+* Building
+
+To build this project you need a build of Gnu binutils to link against.
+It is known to work with binutils 2.17.
+
+The makefile looks for this build in $BINUTILS, or (if that is not set),
+in .../binutils-2.17-$LIBARCH, where LIBARCH (as in HotSpot) is one of
+the jre subdirectory keywords i386, amd64, sparc, sparcv9, etc.
+
+To build Gnu binutils, first download a copy of the software:
+ http://directory.fsf.org/project/binutils/
+
+Unpack the binutils tarball into an empty directory:
+ chdir ../../../../..
+ tar -xzf - < ../binutils-2.17.tar.gz
+ mv binutils-2.17 binutils-2.17-i386 #or binutils-2.17-sparc
+ cd binutils-2.17-i386
+
+From inside that directory, run configure and make:
+ ( export CFLAGS='-fPIC'
+ ./configure i386-pc-elf )
+ gnumake
+
+(Leave out or change the argument to configure if not on an i386 system.)
+
+Next, untar again into another empty directory for the LP64 version:
+ chdir ..
+ tar -xzf - < ../binutils-2.17.tar.gz
+ mv binutils-2.17 binutils-2.17-amd64 #or binutils-2.17-sparcv9
+ cd binutils-2.17-amd64
+
+From inside that directory, run configure for LP64 and make:
+ ( export ac_cv_c_bigendian=no CFLAGS='-m64 -fPIC' LDFLAGS=-m64
+ ./configure amd64-pc-elf )
+ gnumake
+
+The -fPIC option is needed because the generated code will be
+linked into the hsdid-$LIBARCH.so binary. If you miss the
+option, the JVM will fail to load the disassembler.
+
+You probably want two builds, one for 32 and one for 64 bits.
+To build the 64-bit variation of a platforn, add LP64=1 to
+the make command line for hsdis.
+
+So, go back to the hsdis project and build:
+ chdir .../hsdis
+ gnumake
+ gnumake LP64=1
+
+* Installing
+
+Products are named like bin/$OS/hsdis-$LIBARCH.so.
+You can install them on your LD_LIBRARY_PATH,
+or inside of your JRE next to $LIBARCH/libjvm.so.
+
+Now test:
+ export LD_LIBRARY_PATH .../hsdis/bin/solaris:$LD_LIBRARY_PATH
+ dargs='-XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly'
+ dargs=$dargs' -XX:PrintAssemblyOptions=hsdis-print-bytes'
+ java $dargs -Xbatch CompileCommand=print,*String.hashCode HelloWorld
+
+If the product mode of the JVM does not accept -XX:+PrintAssembly,
+you do not have a version new enough to use the hsdis plugin.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/hsdis/hsdis-demo.c Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,223 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+/* hsdis-demo.c -- dump a range of addresses as native instructions
+ This demonstrates the protocol required by the HotSpot PrintAssembly option.
+*/
+
+#include "hsdis.h"
+
+#include "stdio.h"
+#include "stdlib.h"
+#include "string.h"
+
+void greet(const char*);
+void disassemble(void*, void*);
+void end_of_file();
+
+const char* options = NULL;
+int raw = 0;
+int xml = 0;
+
+int main(int ac, char** av) {
+ int greeted = 0;
+ int i;
+ for (i = 1; i < ac; i++) {
+ const char* arg = av[i];
+ if (arg[0] == '-') {
+ if (!strcmp(arg, "-xml"))
+ xml ^= 1;
+ else if (!strcmp(arg, "-raw"))
+ raw ^= 1;
+ else if (!strncmp(arg, "-options=", 9))
+ options = arg+9;
+ else
+ { printf("Usage: %s [-xml] [name...]\n"); exit(2); }
+ continue;
+ }
+ greet(arg);
+ greeted = 1;
+ }
+ if (!greeted)
+ greet("world");
+ printf("...And now for something completely different:\n");
+ disassemble((void*) &main, (void*) &end_of_file);
+ printf("Cheers!\n");
+}
+
+void greet(const char* whom) {
+ printf("Hello, %s!\n", whom);
+}
+
+void end_of_file() { }
+
+/* don't disassemble after this point... */
+
+#include "dlfcn.h"
+
+#ifdef HOTSPOT_LIB_ARCH
+#define LIBARCH HOTSPOT_LIB_ARCH
+#endif
+#ifdef HOTSPOT_OS
+#define OS HOTSPOT_OS
+#endif
+
+#define DECODE_INSTRUCTIONS_NAME "decode_instructions"
+#define HSDIS_NAME "hsdis"
+static void* decode_instructions_pv = 0;
+static const char* hsdis_path[] = {
+ HSDIS_NAME".so",
+#ifdef OS
+ "bin/"OS"/"HSDIS_NAME".so",
+#endif
+#ifdef LIBARCH
+ HSDIS_NAME"-"LIBARCH".so",
+#ifdef OS
+ "bin/"OS"/"HSDIS_NAME"-"LIBARCH".so",
+#endif
+#endif
+ NULL
+};
+
+static const char* load_decode_instructions() {
+ void* dllib = NULL;
+ const char* *next_in_path = hsdis_path;
+ while (1) {
+ decode_instructions_pv = dlsym(dllib, DECODE_INSTRUCTIONS_NAME);
+ if (decode_instructions_pv != NULL)
+ return NULL;
+ if (dllib != NULL)
+ return "plugin does not defined "DECODE_INSTRUCTIONS_NAME;
+ for (dllib = NULL; dllib == NULL; ) {
+ const char* next_lib = (*next_in_path++);
+ if (next_lib == NULL)
+ return "cannot find plugin "HSDIS_NAME".so";
+ dllib = dlopen(next_lib, RTLD_LAZY);
+ }
+ }
+}
+
+
+static const char* lookup(void* addr) {
+#define CHECK_NAME(fn) \
+ if (addr == (void*) &fn) return #fn;
+
+ CHECK_NAME(main);
+ CHECK_NAME(greet);
+ return NULL;
+}
+
+/* does the event match the tag, followed by a null, space, or slash? */
+#define MATCH(event, tag) \
+ (!strncmp(event, tag, sizeof(tag)-1) && \
+ (!event[sizeof(tag)-1] || strchr(" /", event[sizeof(tag)-1])))
+
+
+static const char event_cookie[] = "event_cookie"; /* demo placeholder */
+static void* handle_event(void* cookie, const char* event, void* arg) {
+#define NS_DEMO "demo:"
+ if (cookie != event_cookie)
+ printf("*** bad event cookie %p != %p\n", cookie, event_cookie);
+
+ if (xml) {
+ /* We could almost do a printf(event, arg),
+ but for the sake of a better demo,
+ we dress the result up as valid XML.
+ */
+ const char* fmt = strchr(event, ' ');
+ int evlen = (fmt ? fmt - event : strlen(event));
+ if (!fmt) {
+ if (event[0] != '/') {
+ printf("<"NS_DEMO"%.*s>", evlen, event);
+ } else {
+ printf("</"NS_DEMO"%.*s>", evlen-1, event+1);
+ }
+ } else {
+ if (event[0] != '/') {
+ printf("<"NS_DEMO"%.*s", evlen, event);
+ printf(fmt, arg);
+ printf(">");
+ } else {
+ printf("<"NS_DEMO"%.*s_done", evlen-1, event+1);
+ printf(fmt, arg);
+ printf("/></"NS_DEMO"%.*s>", evlen-1, event+1);
+ }
+ }
+ }
+
+ if (MATCH(event, "insn")) {
+ const char* name = lookup(arg);
+ if (name) printf("%s:\n", name);
+
+ /* basic action for <insn>: */
+ printf(" %p\t", arg);
+
+ } else if (MATCH(event, "/insn")) {
+ /* basic action for </insn>:
+ (none, plugin puts the newline for us
+ */
+
+ } else if (MATCH(event, "mach")) {
+ printf("Decoding for CPU '%s'\n", (char*) arg);
+
+ } else if (MATCH(event, "addr")) {
+ /* basic action for <addr/>: */
+ const char* name = lookup(arg);
+ if (name) {
+ printf("&%s (%p)", name, arg);
+ /* return non-null to notify hsdis not to print the addr */
+ return arg;
+ }
+ }
+
+ /* null return is always safe; can mean "I ignored it" */
+ return NULL;
+}
+
+#define fprintf_callback \
+ (decode_instructions_printf_callback_ftype)&fprintf
+
+void disassemble(void* from, void* to) {
+ const char* err = load_decode_instructions();
+ if (err != NULL) {
+ printf("%s: %s\n", err, dlerror());
+ exit(1);
+ }
+ printf("Decoding from %p to %p...\n", from, to);
+ decode_instructions_ftype decode_instructions
+ = (decode_instructions_ftype) decode_instructions_pv;
+ void* res;
+ if (raw && xml) {
+ res = (*decode_instructions)(from, to, NULL, stdout, NULL, stdout, options);
+ } else if (raw) {
+ res = (*decode_instructions)(from, to, NULL, NULL, NULL, stdout, options);
+ } else {
+ res = (*decode_instructions)(from, to,
+ handle_event, (void*) event_cookie,
+ fprintf_callback, stdout,
+ options);
+ }
+ if (res != to)
+ printf("*** Result was %p!\n", res);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/hsdis/hsdis.c Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,499 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+/* hsdis.c -- dump a range of addresses as native instructions
+ This implements the plugin protocol required by the
+ HotSpot PrintAssembly option.
+*/
+
+#include "hsdis.h"
+
+#include <sysdep.h>
+#include <libiberty.h>
+#include <bfd.h>
+#include <dis-asm.h>
+
+#ifndef bool
+#define bool int
+#define true 1
+#define false 0
+#endif /*bool*/
+
+/* short names for stuff in hsdis.h */
+typedef decode_instructions_event_callback_ftype event_callback_t;
+typedef decode_instructions_printf_callback_ftype printf_callback_t;
+
+/* disassemble_info.application_data object */
+struct hsdis_app_data {
+ /* the arguments to decode_instructions */
+ uintptr_t start; uintptr_t end;
+ event_callback_t event_callback; void* event_stream;
+ printf_callback_t printf_callback; void* printf_stream;
+ bool losing;
+
+ /* the architecture being disassembled */
+ const char* arch_name;
+ const bfd_arch_info_type* arch_info;
+
+ /* the disassembler we are going to use: */
+ disassembler_ftype dfn;
+ struct disassemble_info dinfo; /* the actual struct! */
+
+ char mach_option[64];
+ char insn_options[256];
+};
+
+#define DECL_APP_DATA(dinfo) \
+ struct hsdis_app_data* app_data = (struct hsdis_app_data*) (dinfo)->application_data
+
+#define DECL_EVENT_CALLBACK(app_data) \
+ event_callback_t event_callback = (app_data)->event_callback; \
+ void* event_stream = (app_data)->event_stream
+
+#define DECL_PRINTF_CALLBACK(app_data) \
+ printf_callback_t printf_callback = (app_data)->printf_callback; \
+ void* printf_stream = (app_data)->printf_stream
+
+
+static void print_help(struct hsdis_app_data* app_data,
+ const char* msg, const char* arg);
+static void setup_app_data(struct hsdis_app_data* app_data,
+ const char* options);
+static const char* format_insn_close(const char* close,
+ disassemble_info* dinfo,
+ char* buf, size_t bufsize);
+
+void*
+#ifdef DLL_ENTRY
+ DLL_ENTRY
+#endif
+decode_instructions(void* start_pv, void* end_pv,
+ event_callback_t event_callback_arg, void* event_stream_arg,
+ printf_callback_t printf_callback_arg, void* printf_stream_arg,
+ const char* options) {
+ struct hsdis_app_data app_data;
+ memset(&app_data, 0, sizeof(app_data));
+ app_data.start = (uintptr_t) start_pv;
+ app_data.end = (uintptr_t) end_pv;
+ app_data.event_callback = event_callback_arg;
+ app_data.event_stream = event_stream_arg;
+ app_data.printf_callback = printf_callback_arg;
+ app_data.printf_stream = printf_stream_arg;
+
+ setup_app_data(&app_data, options);
+ char buf[128];
+
+ {
+ /* now reload everything from app_data: */
+ DECL_EVENT_CALLBACK(&app_data);
+ DECL_PRINTF_CALLBACK(&app_data);
+ uintptr_t start = app_data.start;
+ uintptr_t end = app_data.end;
+ uintptr_t p = start;
+
+ (*event_callback)(event_stream, "insns", (void*)start);
+
+ (*event_callback)(event_stream, "mach name='%s'",
+ (void*) app_data.arch_info->printable_name);
+ if (app_data.dinfo.bytes_per_line != 0) {
+ (*event_callback)(event_stream, "format bytes-per-line='%p'/",
+ (void*)(intptr_t) app_data.dinfo.bytes_per_line);
+ }
+
+ while (p < end && !app_data.losing) {
+ (*event_callback)(event_stream, "insn", (void*) p);
+
+ /* reset certain state, so we can read it with confidence */
+ app_data.dinfo.insn_info_valid = 0;
+ app_data.dinfo.branch_delay_insns = 0;
+ app_data.dinfo.data_size = 0;
+ app_data.dinfo.insn_type = 0;
+
+ int size = (*app_data.dfn)((bfd_vma) p, &app_data.dinfo);
+
+ if (size > 0) p += size;
+ else app_data.losing = true;
+
+ const char* insn_close = format_insn_close("/insn", &app_data.dinfo,
+ buf, sizeof(buf));
+ (*event_callback)(event_stream, insn_close, (void*) p);
+
+ /* follow each complete insn by a nice newline */
+ (*printf_callback)(printf_stream, "\n");
+ }
+
+ (*event_callback)(event_stream, "/insns", (void*) p);
+ return (void*) p;
+ }
+}
+
+/* take the address of the function, for luck, and also test the typedef: */
+const decode_instructions_ftype decode_instructions_address = &decode_instructions;
+
+static const char* format_insn_close(const char* close,
+ disassemble_info* dinfo,
+ char* buf, size_t bufsize) {
+ if (!dinfo->insn_info_valid)
+ return close;
+ enum dis_insn_type itype = dinfo->insn_type;
+ int dsize = dinfo->data_size, delays = dinfo->branch_delay_insns;
+ if ((itype == dis_nonbranch && (dsize | delays) == 0)
+ || (strlen(close) + 3*20 > bufsize))
+ return close;
+
+ const char* type = "unknown";
+ switch (itype) {
+ case dis_nonbranch: type = NULL; break;
+ case dis_branch: type = "branch"; break;
+ case dis_condbranch: type = "condbranch"; break;
+ case dis_jsr: type = "jsr"; break;
+ case dis_condjsr: type = "condjsr"; break;
+ case dis_dref: type = "dref"; break;
+ case dis_dref2: type = "dref2"; break;
+ }
+
+ strcpy(buf, close);
+ char* p = buf;
+ if (type) sprintf(p += strlen(p), " type='%s'", type);
+ if (dsize) sprintf(p += strlen(p), " dsize='%d'", dsize);
+ if (delays) sprintf(p += strlen(p), " delay='%d'", delays);
+ return buf;
+}
+
+/* handler functions */
+
+static int
+hsdis_read_memory_func(bfd_vma memaddr,
+ bfd_byte* myaddr,
+ unsigned int length,
+ struct disassemble_info* dinfo) {
+ uintptr_t memaddr_p = (uintptr_t) memaddr;
+ DECL_APP_DATA(dinfo);
+ if (memaddr_p + length > app_data->end) {
+ /* read is out of bounds */
+ return EIO;
+ } else {
+ memcpy(myaddr, (bfd_byte*) memaddr_p, length);
+ return 0;
+ }
+}
+
+static void
+hsdis_print_address_func(bfd_vma vma, struct disassemble_info* dinfo) {
+ /* the actual value to print: */
+ void* addr_value = (void*) (uintptr_t) vma;
+ DECL_APP_DATA(dinfo);
+ DECL_EVENT_CALLBACK(app_data);
+
+ /* issue the event: */
+ void* result =
+ (*event_callback)(event_stream, "addr/", addr_value);
+ if (result == NULL) {
+ /* event declined */
+ generic_print_address(vma, dinfo);
+ }
+}
+
+
+/* configuration */
+
+static void set_optional_callbacks(struct hsdis_app_data* app_data);
+static void parse_caller_options(struct hsdis_app_data* app_data,
+ const char* caller_options);
+static const char* native_arch_name();
+static enum bfd_endian native_endian();
+static const bfd_arch_info_type* find_arch_info(const char* arch_nane);
+static bfd* get_native_bfd(const bfd_arch_info_type* arch_info,
+ /* to avoid malloc: */
+ bfd* empty_bfd, bfd_target* empty_xvec);
+static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo,
+ void *stream,
+ fprintf_ftype fprintf_func,
+ bfd* bfd,
+ char* disassembler_options);
+static void parse_fake_insn(disassembler_ftype dfn,
+ struct disassemble_info* dinfo);
+
+static void setup_app_data(struct hsdis_app_data* app_data,
+ const char* caller_options) {
+ /* Make reasonable defaults for null callbacks.
+ A non-null stream for a null callback is assumed to be a FILE* for output.
+ Events are rendered as XML.
+ */
+ set_optional_callbacks(app_data);
+
+ /* Look into caller_options for anything interesting. */
+ if (caller_options != NULL)
+ parse_caller_options(app_data, caller_options);
+
+ /* Discover which architecture we are going to disassemble. */
+ app_data->arch_name = &app_data->mach_option[0];
+ if (app_data->arch_name[0] == '\0')
+ app_data->arch_name = native_arch_name();
+ app_data->arch_info = find_arch_info(app_data->arch_name);
+
+ /* Make a fake bfd to hold the arch. and byteorder info. */
+ struct {
+ bfd_target empty_xvec;
+ bfd empty_bfd;
+ } buf;
+ bfd* native_bfd = get_native_bfd(app_data->arch_info,
+ /* to avoid malloc: */
+ &buf.empty_bfd, &buf.empty_xvec);
+ init_disassemble_info_from_bfd(&app_data->dinfo,
+ app_data->printf_stream,
+ app_data->printf_callback,
+ native_bfd,
+ app_data->insn_options);
+
+ /* Finish linking together the various callback blocks. */
+ app_data->dinfo.application_data = (void*) app_data;
+ app_data->dfn = disassembler(native_bfd);
+ app_data->dinfo.print_address_func = hsdis_print_address_func;
+ app_data->dinfo.read_memory_func = hsdis_read_memory_func;
+
+ if (app_data->dfn == NULL) {
+ const char* bad = app_data->arch_name;
+ static bool complained;
+ if (bad == &app_data->mach_option[0])
+ print_help(app_data, "bad mach=%s", bad);
+ else if (!complained)
+ print_help(app_data, "bad native mach=%s; please port hsdis to this platform", bad);
+ complained = true;
+ /* must bail out */
+ app_data->losing = true;
+ return;
+ }
+
+ parse_fake_insn(app_data->dfn, &app_data->dinfo);
+}
+
+
+/* ignore all events, return a null */
+static void* null_event_callback(void* ignore_stream, const char* ignore_event, void* arg) {
+ return NULL;
+}
+
+/* print all events as XML markup */
+static void* xml_event_callback(void* stream, const char* event, void* arg) {
+ FILE* fp = (FILE*) stream;
+#define NS_PFX "dis:"
+ if (event[0] != '/') {
+ /* issue the tag, with or without a formatted argument */
+ fprintf(fp, "<"NS_PFX);
+ fprintf(fp, event, arg);
+ fprintf(fp, ">");
+ } else {
+ ++event; /* skip slash */
+ const char* argp = strchr(event, ' ');
+ if (argp == NULL) {
+ /* no arguments; just issue the closing tag */
+ fprintf(fp, "</"NS_PFX"%s>", event);
+ } else {
+ /* split out the closing attributes as <dis:foo_done attr='val'/> */
+ int event_prefix = (argp - event);
+ fprintf(fp, "<"NS_PFX"%.*s_done", event_prefix, event);
+ fprintf(fp, argp, arg);
+ fprintf(fp, "/></"NS_PFX"%.*s>", event_prefix, event);
+ }
+ }
+ return NULL;
+}
+
+static void set_optional_callbacks(struct hsdis_app_data* app_data) {
+ if (app_data->printf_callback == NULL) {
+ int (*fprintf_callback)(FILE*, const char*, ...) = &fprintf;
+ FILE* fprintf_stream = stdout;
+ app_data->printf_callback = (printf_callback_t) fprintf_callback;
+ if (app_data->printf_stream == NULL)
+ app_data->printf_stream = (void*) fprintf_stream;
+ }
+ if (app_data->event_callback == NULL) {
+ if (app_data->event_stream == NULL)
+ app_data->event_callback = &null_event_callback;
+ else
+ app_data->event_callback = &xml_event_callback;
+ }
+
+}
+
+static void parse_caller_options(struct hsdis_app_data* app_data, const char* caller_options) {
+ char* iop_base = app_data->insn_options;
+ char* iop_limit = iop_base + sizeof(app_data->insn_options) - 1;
+ char* iop = iop_base;
+ const char* p;
+ for (p = caller_options; p != NULL; ) {
+ const char* q = strchr(p, ',');
+ size_t plen = (q == NULL) ? strlen(p) : ((q++) - p);
+ if (plen == 4 && strncmp(p, "help", plen) == 0) {
+ print_help(app_data, NULL, NULL);
+ } else if (plen >= 5 && strncmp(p, "mach=", 5) == 0) {
+ char* mach_option = app_data->mach_option;
+ size_t mach_size = sizeof(app_data->mach_option);
+ mach_size -= 1; /*leave room for the null*/
+ if (plen > mach_size) plen = mach_size;
+ strncpy(mach_option, p, plen);
+ mach_option[plen] = '\0';
+ } else if (plen > 6 && strncmp(p, "hsdis-", 6)) {
+ // do not pass these to the next level
+ } else {
+ /* just copy it; {i386,sparc}-dis.c might like to see it */
+ if (iop > iop_base && iop < iop_limit) (*iop++) = ',';
+ if (iop + plen > iop_limit)
+ plen = iop_limit - iop;
+ strncpy(iop, p, plen);
+ iop += plen;
+ }
+ p = q;
+ }
+}
+
+static void print_help(struct hsdis_app_data* app_data,
+ const char* msg, const char* arg) {
+ DECL_PRINTF_CALLBACK(app_data);
+ if (msg != NULL) {
+ (*printf_callback)(printf_stream, "hsdis: ");
+ (*printf_callback)(printf_stream, msg, arg);
+ (*printf_callback)(printf_stream, "\n");
+ }
+ (*printf_callback)(printf_stream, "hsdis output options:\n");
+ if (printf_callback == (printf_callback_t) &fprintf)
+ disassembler_usage((FILE*) printf_stream);
+ else
+ disassembler_usage(stderr); /* better than nothing */
+ (*printf_callback)(printf_stream, " mach=<arch> select disassembly mode\n");
+#if defined(LIBARCH_i386) || defined(LIBARCH_amd64)
+ (*printf_callback)(printf_stream, " mach=i386 select 32-bit mode\n");
+ (*printf_callback)(printf_stream, " mach=x86-64 select 64-bit mode\n");
+ (*printf_callback)(printf_stream, " suffix always print instruction suffix\n");
+#endif
+ (*printf_callback)(printf_stream, " help print this message\n");
+}
+
+
+/* low-level bfd and arch stuff that binutils doesn't do for us */
+
+static const bfd_arch_info_type* find_arch_info(const char* arch_name) {
+ const bfd_arch_info_type* arch_info = bfd_scan_arch(arch_name);
+ if (arch_info == NULL) {
+ extern const bfd_arch_info_type bfd_default_arch_struct;
+ arch_info = &bfd_default_arch_struct;
+ }
+ return arch_info;
+}
+
+static const char* native_arch_name() {
+ const char* res = HOTSPOT_LIB_ARCH;
+#ifdef LIBARCH_amd64
+ res = "i386:x86-64";
+#endif
+#ifdef LIBARCH_sparc
+ res = "sparc:v8plusb";
+#endif
+#ifdef LIBARCH_sparc
+ res = "sparc:v8plusb";
+#endif
+#ifdef LIBARCH_sparcv9
+ res = "sparc:v9b";
+#endif
+ if (res == NULL)
+ res = "HOTSPOT_LIB_ARCH is not set in Makefile!";
+ return res;
+}
+
+static enum bfd_endian native_endian() {
+ int32_t endian_test = 'x';
+ if (*(const char*) &endian_test == 'x')
+ return BFD_ENDIAN_LITTLE;
+ else
+ return BFD_ENDIAN_BIG;
+}
+
+static bfd* get_native_bfd(const bfd_arch_info_type* arch_info,
+ bfd* empty_bfd, bfd_target* empty_xvec) {
+ memset(empty_bfd, 0, sizeof(*empty_bfd));
+ memset(empty_xvec, 0, sizeof(*empty_xvec));
+ empty_xvec->flavour = bfd_target_unknown_flavour;
+ empty_xvec->byteorder = native_endian();
+ empty_bfd->xvec = empty_xvec;
+ empty_bfd->arch_info = arch_info;
+ return empty_bfd;
+}
+
+static int read_zero_data_only(bfd_vma ignore_p,
+ bfd_byte* myaddr, unsigned int length,
+ struct disassemble_info *ignore_info) {
+ memset(myaddr, 0, length);
+ return 0;
+}
+static int print_to_dev_null(void* ignore_stream, const char* ignore_format, ...) {
+ return 0;
+}
+
+/* Prime the pump by running the selected disassembler on a null input.
+ This forces the machine-specific disassembler to divulge invariant
+ information like bytes_per_line.
+ */
+static void parse_fake_insn(disassembler_ftype dfn,
+ struct disassemble_info* dinfo) {
+ typedef int (*read_memory_ftype)
+ (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length,
+ struct disassemble_info *info);
+ read_memory_ftype read_memory_func = dinfo->read_memory_func;
+ fprintf_ftype fprintf_func = dinfo->fprintf_func;
+
+ dinfo->read_memory_func = &read_zero_data_only;
+ dinfo->fprintf_func = &print_to_dev_null;
+ (*dfn)(0, dinfo);
+
+ // put it back:
+ dinfo->read_memory_func = read_memory_func;
+ dinfo->fprintf_func = fprintf_func;
+}
+
+static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo,
+ void *stream,
+ fprintf_ftype fprintf_func,
+ bfd* abfd,
+ char* disassembler_options) {
+ init_disassemble_info(dinfo, stream, fprintf_func);
+
+ dinfo->flavour = bfd_get_flavour(abfd);
+ dinfo->arch = bfd_get_arch(abfd);
+ dinfo->mach = bfd_get_mach(abfd);
+ dinfo->disassembler_options = disassembler_options;
+ dinfo->octets_per_byte = bfd_octets_per_byte (abfd);
+ dinfo->skip_zeroes = sizeof(void*) * 2;
+ dinfo->skip_zeroes_at_end = sizeof(void*)-1;
+ dinfo->disassembler_needs_relocs = FALSE;
+
+ if (bfd_big_endian(abfd))
+ dinfo->display_endian = dinfo->endian = BFD_ENDIAN_BIG;
+ else if (bfd_little_endian(abfd))
+ dinfo->display_endian = dinfo->endian = BFD_ENDIAN_LITTLE;
+ else
+ dinfo->endian = native_endian();
+
+ disassemble_init_for_target(dinfo);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/hsdis/hsdis.h Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+/* decode_instructions -- dump a range of addresses as native instructions
+ This implements the protocol required by the HotSpot PrintAssembly option.
+
+ The starting and ending addresses are within the current process's address space.
+
+ The option string, if not empty, is interpreted by the disassembler implementation.
+
+ The printf callback is 'fprintf' or any other workalike.
+ It is called as (*printf_callback)(printf_stream, "some format...", some, format, args).
+
+ The event callback receives an event tag (a string) and an argument (a void*).
+ It is called as (*event_callback)(event_stream, "tag", arg).
+
+ Events:
+ <insn pc='%p'> begin an instruction, at a given location
+ </insn pc='%d'> end an instruction, at a given location
+ <addr value='%p'/> emit the symbolic value of an address
+
+ A tag format is one of three basic forms: "tag", "/tag", "tag/",
+ where tag is a simple identifier, signifying (as in XML) a element start,
+ element end, and standalone element. (To render as XML, add angle brackets.)
+*/
+extern
+#ifdef DLL_EXPORT
+ DLL_EXPORT
+#endif
+void* decode_instructions(void* start, void* end,
+ void* (*event_callback)(void*, const char*, void*),
+ void* event_stream,
+ int (*printf_callback)(void*, const char*, ...),
+ void* printf_stream,
+ const char* options);
+
+/* convenience typedefs */
+
+typedef void* (*decode_instructions_event_callback_ftype) (void*, const char*, void*);
+typedef int (*decode_instructions_printf_callback_ftype) (void*, const char*, ...);
+typedef void* (*decode_instructions_ftype) (void* start, void* end,
+ decode_instructions_event_callback_ftype event_callback,
+ void* event_stream,
+ decode_instructions_printf_callback_ftype printf_callback,
+ void* printf_stream,
+ const char* options);
--- a/hotspot/src/share/vm/asm/codeBuffer.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/asm/codeBuffer.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -947,6 +947,7 @@
if (_comments != NULL) {
CodeComment* c = _comments->find(offset);
while (c && c->offset() == offset) {
+ stream->bol();
stream->print(" ;; ");
stream->print_cr(c->comment());
c = c->next();
--- a/hotspot/src/share/vm/classfile/javaClasses.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/classfile/javaClasses.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -1015,7 +1015,6 @@
typeArrayOop _bcis;
int _index;
bool _dirty;
- bool _done;
No_Safepoint_Verifier _nsv;
public:
@@ -1029,12 +1028,10 @@
};
// constructor for new backtrace
- BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
+ BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _dirty(false) {
expand(CHECK);
_backtrace = _head;
_index = 0;
- _dirty = false;
- _done = false;
}
void flush() {
--- a/hotspot/src/share/vm/code/codeCache.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/code/codeCache.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -71,7 +71,22 @@
// what you are doing)
static CodeBlob* find_blob_unsafe(void* start) {
CodeBlob* result = (CodeBlob*)_heap->find_start(start);
- assert(result == NULL || result->blob_contains((address)start), "found wrong CodeBlob");
+ // this assert is too strong because the heap code will return the
+ // heapblock containing start. That block can often be larger than
+ // the codeBlob itself. If you look up an address that is within
+ // the heapblock but not in the codeBlob you will assert.
+ //
+ // Most things will not lookup such bad addresses. However
+ // AsyncGetCallTrace can see intermediate frames and get that kind
+ // of invalid address and so can a developer using hsfind.
+ //
+ // The more correct answer is to return NULL if blob_contains() returns
+ // false.
+ // assert(result == NULL || result->blob_contains((address)start), "found wrong CodeBlob");
+
+ if (result != NULL && !result->blob_contains((address)start)) {
+ result = NULL;
+ }
return result;
}
--- a/hotspot/src/share/vm/code/nmethod.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/code/nmethod.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -707,7 +707,9 @@
" entry points must be same for static methods and vice versa");
}
- bool printnmethods = PrintNMethods || CompilerOracle::has_option_string(_method, "PrintNMethods");
+ bool printnmethods = PrintNMethods
+ || CompilerOracle::should_print(_method)
+ || CompilerOracle::has_option_string(_method, "PrintNMethods");
if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
print_nmethod(printnmethods);
}
@@ -798,7 +800,6 @@
}
-#ifndef PRODUCT
void nmethod::print_nmethod(bool printmethod) {
ttyLocker ttyl; // keep the following output all in one block
if (xtty != NULL) {
@@ -831,7 +832,6 @@
xtty->tail("print_nmethod");
}
}
-#endif
void nmethod::set_version(int v) {
@@ -1870,6 +1870,7 @@
}
}
+#endif // PRODUCT
// Printing operations
@@ -1948,6 +1949,14 @@
oops_size());
}
+void nmethod::print_code() {
+ HandleMark hm;
+ ResourceMark m;
+ Disassembler::decode(this);
+}
+
+
+#ifndef PRODUCT
void nmethod::print_scopes() {
// Find the first pc desc for all scopes in the code and print it.
@@ -1979,13 +1988,6 @@
}
-void nmethod::print_code() {
- HandleMark hm;
- ResourceMark m;
- Disassembler().decode(this);
-}
-
-
void nmethod::print_relocations() {
ResourceMark m; // in case methods get printed via the debugger
tty->print_cr("relocations:");
@@ -2021,6 +2023,7 @@
}
}
+#endif // PRODUCT
const char* nmethod::reloc_string_for(u_char* begin, u_char* end) {
RelocIterator iter(this, begin, end);
@@ -2055,7 +2058,6 @@
return have_one ? "other" : NULL;
}
-
// Return a the last scope in (begin..end]
ScopeDesc* nmethod::scope_desc_in(address begin, address end) {
PcDesc* p = pc_desc_near(begin+1);
@@ -2078,29 +2080,26 @@
address pc = base + om->offset();
if (pc > begin) {
if (pc <= end) {
- st->fill_to(column);
- if (st == tty) {
- st->print("; OopMap ");
- om->print();
- tty->cr();
- } else {
- st->print_cr("; OopMap #%d offset:%d", i, om->offset());
- }
+ st->move_to(column);
+ st->print("; ");
+ om->print_on(st);
}
break;
}
}
}
+
+ // Print any debug info present at this pc.
ScopeDesc* sd = scope_desc_in(begin, end);
if (sd != NULL) {
- st->fill_to(column);
+ st->move_to(column);
if (sd->bci() == SynchronizationEntryBCI) {
st->print(";*synchronization entry");
} else {
if (sd->method().is_null()) {
- tty->print("method is NULL");
+ st->print("method is NULL");
} else if (sd->method()->is_native()) {
- tty->print("method is native");
+ st->print("method is native");
} else {
address bcp = sd->method()->bcp_from(sd->bci());
Bytecodes::Code bc = Bytecodes::java_code_at(bcp);
@@ -2137,13 +2136,13 @@
}
}
}
- st->cr();
+
// Print all scopes
for (;sd != NULL; sd = sd->sender()) {
- st->fill_to(column);
+ st->move_to(column);
st->print("; -");
if (sd->method().is_null()) {
- tty->print("method is NULL");
+ st->print("method is NULL");
} else {
sd->method()->print_short_name(st);
}
@@ -2161,17 +2160,19 @@
const char* str = reloc_string_for(begin, end);
if (str != NULL) {
if (sd != NULL) st->cr();
- st->fill_to(column);
+ st->move_to(column);
st->print("; {%s}", str);
}
int cont_offset = ImplicitExceptionTable(this).at(begin - instructions_begin());
if (cont_offset != 0) {
- st->fill_to(column);
+ st->move_to(column);
st->print("; implicit exception: dispatches to " INTPTR_FORMAT, instructions_begin() + cont_offset);
}
}
+#ifndef PRODUCT
+
void nmethod::print_value_on(outputStream* st) const {
print_on(st, "nmethod");
}
--- a/hotspot/src/share/vm/code/nmethod.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/code/nmethod.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -485,8 +485,8 @@
void verify_interrupt_point(address interrupt_point);
// printing support
- void print() const PRODUCT_RETURN;
- void print_code() PRODUCT_RETURN;
+ void print() const;
+ void print_code();
void print_relocations() PRODUCT_RETURN;
void print_pcs() PRODUCT_RETURN;
void print_scopes() PRODUCT_RETURN;
@@ -495,7 +495,7 @@
void print_calls(outputStream* st) PRODUCT_RETURN;
void print_handler_table() PRODUCT_RETURN;
void print_nul_chk_table() PRODUCT_RETURN;
- void print_nmethod(bool print_code) PRODUCT_RETURN;
+ void print_nmethod(bool print_code);
void print_on(outputStream* st, const char* title) const;
@@ -505,7 +505,7 @@
void log_state_change(int state) const;
// Prints a comment for one native instruction (reloc info, pc desc)
- void print_code_comment_on(outputStream* st, int column, address begin, address end) PRODUCT_RETURN;
+ void print_code_comment_on(outputStream* st, int column, address begin, address end);
static void print_statistics() PRODUCT_RETURN;
// Compiler task identification. Note that all OSR methods
--- a/hotspot/src/share/vm/code/vmreg.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/code/vmreg.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -36,7 +36,6 @@
// Register names
const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers];
-#ifndef PRODUCT
void VMRegImpl::print_on(outputStream* st) const {
if( is_reg() ) {
assert( VMRegImpl::regName[value()], "" );
@@ -48,4 +47,3 @@
st->print("BAD!");
}
}
-#endif // PRODUCT
--- a/hotspot/src/share/vm/code/vmreg.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/code/vmreg.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -96,7 +96,7 @@
intptr_t value() const {return (intptr_t) this; }
- void print_on(outputStream* st) const PRODUCT_RETURN;
+ void print_on(outputStream* st) const;
void print() const { print_on(tty); }
// bias a stack slot.
@@ -156,22 +156,22 @@
_first = ptr;
}
// Return true if single register, even if the pair is really just adjacent stack slots
- bool is_single_reg() {
+ bool is_single_reg() const {
return (_first->is_valid()) && (_first->value() + 1 == _second->value());
}
// Return true if single stack based "register" where the slot alignment matches input alignment
- bool is_adjacent_on_stack(int alignment) {
+ bool is_adjacent_on_stack(int alignment) const {
return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
}
// Return true if single stack based "register" where the slot alignment matches input alignment
- bool is_adjacent_aligned_on_stack(int alignment) {
+ bool is_adjacent_aligned_on_stack(int alignment) const {
return (_first->is_stack() && (_first->value() + 1 == _second->value()) && ((_first->value() & (alignment-1)) == 0));
}
// Return true if single register but adjacent stack slots do not count
- bool is_single_phys_reg() {
+ bool is_single_phys_reg() const {
return (_first->is_reg() && (_first->value() + 1 == _second->value()));
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/compiler/disassembler.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,443 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_disassembler.cpp.incl"
+
+void* Disassembler::_library = NULL;
+bool Disassembler::_tried_to_load_library = false;
+
+// This routine is in the shared library:
+Disassembler::decode_func Disassembler::_decode_instructions = NULL;
+
+static const char hsdis_library_name[] = "hsdis-"HOTSPOT_LIB_ARCH;
+static const char decode_instructions_name[] = "decode_instructions";
+
+#define COMMENT_COLUMN 40 LP64_ONLY(+8) /*could be an option*/
+#define BYTES_COMMENT ";..." /* funky byte display comment */
+
+bool Disassembler::load_library() {
+ if (_decode_instructions != NULL) {
+ // Already succeeded.
+ return true;
+ }
+ if (_tried_to_load_library) {
+ // Do not try twice.
+ // To force retry in debugger: assign _tried_to_load_library=0
+ return false;
+ }
+ // Try to load it.
+ char ebuf[1024];
+ char buf[JVM_MAXPATHLEN];
+ os::jvm_path(buf, sizeof(buf));
+ int jvm_offset = -1;
+ {
+ // Match "jvm[^/]*" in jvm_path.
+ const char* base = buf;
+ const char* p = strrchr(buf, '/');
+ p = strstr(p ? p : base, "jvm");
+ if (p != NULL) jvm_offset = p - base;
+ }
+ if (jvm_offset >= 0) {
+ // Find the disassembler next to libjvm.so.
+ strcpy(&buf[jvm_offset], hsdis_library_name);
+ strcat(&buf[jvm_offset], os::dll_file_extension());
+ _library = hpi::dll_load(buf, ebuf, sizeof ebuf);
+ }
+ if (_library == NULL) {
+ // Try a free-floating lookup.
+ strcpy(&buf[0], hsdis_library_name);
+ strcat(&buf[0], os::dll_file_extension());
+ _library = hpi::dll_load(buf, ebuf, sizeof ebuf);
+ }
+ if (_library != NULL) {
+ _decode_instructions = CAST_TO_FN_PTR(Disassembler::decode_func,
+ hpi::dll_lookup(_library, decode_instructions_name));
+ }
+ _tried_to_load_library = true;
+ if (_decode_instructions == NULL) {
+ tty->print_cr("Could not load %s; %s; %s", buf,
+ ((_library != NULL)
+ ? "entry point is missing"
+ : (WizardMode || PrintMiscellaneous)
+ ? (const char*)ebuf
+ : "library not loadable"),
+ "PrintAssembly is disabled");
+ return false;
+ }
+
+ // Success.
+ tty->print_cr("Loaded disassembler from %s", buf);
+ return true;
+}
+
+
+class decode_env {
+ private:
+ nmethod* _nm;
+ CodeBlob* _code;
+ outputStream* _output;
+ address _start, _end;
+
+ char _option_buf[512];
+ char _print_raw;
+ bool _print_pc;
+ bool _print_bytes;
+ address _cur_insn;
+ int _total_ticks;
+ int _bytes_per_line; // arch-specific formatting option
+
+ static bool match(const char* event, const char* tag) {
+ size_t taglen = strlen(tag);
+ if (strncmp(event, tag, taglen) != 0)
+ return false;
+ char delim = event[taglen];
+ return delim == '\0' || delim == ' ' || delim == '/' || delim == '=';
+ }
+
+ void collect_options(const char* p) {
+ if (p == NULL || p[0] == '\0') return;
+ size_t opt_so_far = strlen(_option_buf);
+ if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf)) return;
+ char* fillp = &_option_buf[opt_so_far];
+ if (opt_so_far > 0) *fillp++ = ',';
+ strcat(fillp, p);
+ // replace white space by commas:
+ char* q = fillp;
+ while ((q = strpbrk(q, " \t\n")) != NULL)
+ *q++ = ',';
+ // Note that multiple PrintAssemblyOptions flags accumulate with \n,
+ // which we want to be changed to a comma...
+ }
+
+ void print_insn_labels();
+ void print_insn_bytes(address pc0, address pc);
+ void print_address(address value);
+
+ public:
+ decode_env(CodeBlob* code, outputStream* output);
+
+ address decode_instructions(address start, address end);
+
+ void start_insn(address pc) {
+ _cur_insn = pc;
+ output()->bol();
+ print_insn_labels();
+ }
+
+ void end_insn(address pc) {
+ address pc0 = cur_insn();
+ outputStream* st = output();
+ if (_print_bytes && pc > pc0)
+ print_insn_bytes(pc0, pc);
+ if (_nm != NULL)
+ _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc);
+
+ // Output pc bucket ticks if we have any
+ if (total_ticks() != 0) {
+ address bucket_pc = FlatProfiler::bucket_start_for(pc);
+ if (bucket_pc != NULL && bucket_pc > pc0 && bucket_pc <= pc) {
+ int bucket_count = FlatProfiler::bucket_count_for(pc0);
+ if (bucket_count != 0) {
+ st->bol();
+ st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count);
+ }
+ }
+ }
+ }
+
+ address handle_event(const char* event, address arg);
+
+ outputStream* output() { return _output; }
+ address cur_insn() { return _cur_insn; }
+ int total_ticks() { return _total_ticks; }
+ void set_total_ticks(int n) { _total_ticks = n; }
+ const char* options() { return _option_buf; }
+};
+
+decode_env::decode_env(CodeBlob* code, outputStream* output) {
+ memset(this, 0, sizeof(*this));
+ _output = output ? output : tty;
+ _code = code;
+ if (code != NULL && code->is_nmethod())
+ _nm = (nmethod*) code;
+
+ // by default, output pc but not bytes:
+ _print_pc = true;
+ _print_bytes = false;
+ _bytes_per_line = Disassembler::pd_instruction_alignment();
+
+ // parse the global option string:
+ collect_options(Disassembler::pd_cpu_opts());
+ collect_options(PrintAssemblyOptions);
+
+ if (strstr(options(), "hsdis-")) {
+ if (strstr(options(), "hsdis-print-raw"))
+ _print_raw = (strstr(options(), "xml") ? 2 : 1);
+ if (strstr(options(), "hsdis-print-pc"))
+ _print_pc = !_print_pc;
+ if (strstr(options(), "hsdis-print-bytes"))
+ _print_bytes = !_print_bytes;
+ }
+ if (strstr(options(), "help")) {
+ tty->print_cr("PrintAssemblyOptions help:");
+ tty->print_cr(" hsdis-print-raw test plugin by requesting raw output");
+ tty->print_cr(" hsdis-print-raw-xml test plugin by requesting raw xml");
+ tty->print_cr(" hsdis-print-pc turn off PC printing (on by default)");
+ tty->print_cr(" hsdis-print-bytes turn on instruction byte output");
+ tty->print_cr("combined options: %s", options());
+ }
+}
+
+address decode_env::handle_event(const char* event, address arg) {
+ if (match(event, "insn")) {
+ start_insn(arg);
+ } else if (match(event, "/insn")) {
+ end_insn(arg);
+ } else if (match(event, "addr")) {
+ if (arg != NULL) {
+ print_address(arg);
+ return arg;
+ }
+ } else if (match(event, "mach")) {
+ output()->print_cr("[Disassembling for mach='%s']", arg);
+ } else if (match(event, "format bytes-per-line")) {
+ _bytes_per_line = (int) (intptr_t) arg;
+ } else {
+ // ignore unrecognized markup
+ }
+ return NULL;
+}
+
+// called by the disassembler to print out jump targets and data addresses
+void decode_env::print_address(address adr) {
+ outputStream* st = _output;
+
+ if (adr == NULL) {
+ st->print("NULL");
+ return;
+ }
+
+ int small_num = (int)(intptr_t)adr;
+ if ((intptr_t)adr == (intptr_t)small_num
+ && -1 <= small_num && small_num <= 9) {
+ st->print("%d", small_num);
+ return;
+ }
+
+ if (Universe::is_fully_initialized()) {
+ if (StubRoutines::contains(adr)) {
+ StubCodeDesc* desc = StubCodeDesc::desc_for(adr);
+ if (desc == NULL)
+ desc = StubCodeDesc::desc_for(adr + frame::pc_return_offset);
+ if (desc != NULL) {
+ st->print("Stub::%s", desc->name());
+ if (desc->begin() != adr)
+ st->print("%+d 0x%p",adr - desc->begin(), adr);
+ else if (WizardMode) st->print(" " INTPTR_FORMAT, adr);
+ return;
+ }
+ st->print("Stub::<unknown> " INTPTR_FORMAT, adr);
+ return;
+ }
+
+ BarrierSet* bs = Universe::heap()->barrier_set();
+ if (bs->kind() == BarrierSet::CardTableModRef &&
+ adr == (address)((CardTableModRefBS*)(bs))->byte_map_base) {
+ st->print("word_map_base");
+ if (WizardMode) st->print(" " INTPTR_FORMAT, (intptr_t)adr);
+ return;
+ }
+
+ oop obj;
+ if (_nm != NULL
+ && (obj = _nm->embeddedOop_at(cur_insn())) != NULL
+ && (address) obj == adr) {
+ obj->print_value_on(st);
+ return;
+ }
+ }
+
+ // Fall through to a simple numeral.
+ st->print(INTPTR_FORMAT, (intptr_t)adr);
+}
+
+void decode_env::print_insn_labels() {
+ address p = cur_insn();
+ outputStream* st = output();
+ nmethod* nm = _nm;
+ if (nm != NULL) {
+ if (p == nm->entry_point()) st->print_cr("[Entry Point]");
+ if (p == nm->verified_entry_point()) st->print_cr("[Verified Entry Point]");
+ if (p == nm->exception_begin()) st->print_cr("[Exception Handler]");
+ if (p == nm->stub_begin()) st->print_cr("[Stub Code]");
+ if (p == nm->consts_begin()) st->print_cr("[Constants]");
+ }
+ CodeBlob* cb = _code;
+ if (cb != NULL) {
+ cb->print_block_comment(st, (intptr_t)(p - cb->instructions_begin()));
+ }
+ if (_print_pc) {
+ st->print(" " INTPTR_FORMAT ": ", (intptr_t) p);
+ }
+}
+
+void decode_env::print_insn_bytes(address pc, address pc_limit) {
+ outputStream* st = output();
+ size_t incr = 1;
+ size_t perline = _bytes_per_line;
+ if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int)
+ && !((uintptr_t)pc % sizeof(int))
+ && !((uintptr_t)pc_limit % sizeof(int))) {
+ incr = sizeof(int);
+ if (perline % incr) perline += incr - (perline % incr);
+ }
+ while (pc < pc_limit) {
+ // tab to the desired column:
+ st->move_to(COMMENT_COLUMN);
+ address pc0 = pc;
+ address pc1 = pc + perline;
+ if (pc1 > pc_limit) pc1 = pc_limit;
+ for (; pc < pc1; pc += incr) {
+ if (pc == pc0)
+ st->print(BYTES_COMMENT);
+ else if ((uint)(pc - pc0) % sizeof(int) == 0)
+ st->print(" "); // put out a space on word boundaries
+ if (incr == sizeof(int))
+ st->print("%08lx", *(int*)pc);
+ else st->print("%02x", (*pc)&0xFF);
+ }
+ st->cr();
+ }
+}
+
+
+static void* event_to_env(void* env_pv, const char* event, void* arg) {
+ decode_env* env = (decode_env*) env_pv;
+ return env->handle_event(event, (address) arg);
+}
+
+static int printf_to_env(void* env_pv, const char* format, ...) {
+ decode_env* env = (decode_env*) env_pv;
+ outputStream* st = env->output();
+ size_t flen = strlen(format);
+ const char* raw = NULL;
+ if (flen == 0) return 0;
+ if (flen == 1 && format[0] == '\n') { st->bol(); return 1; }
+ if (flen < 2 ||
+ strchr(format, '%') == NULL) {
+ raw = format;
+ } else if (format[0] == '%' && format[1] == '%' &&
+ strchr(format+2, '%') == NULL) {
+ // happens a lot on machines with names like %foo
+ flen--;
+ raw = format+1;
+ }
+ if (raw != NULL) {
+ st->print_raw(raw, (int) flen);
+ return (int) flen;
+ }
+ va_list ap;
+ va_start(ap, format);
+ julong cnt0 = st->count();
+ st->vprint(format, ap);
+ julong cnt1 = st->count();
+ va_end(ap);
+ return (int)(cnt1 - cnt0);
+}
+
+address decode_env::decode_instructions(address start, address end) {
+ _start = start; _end = end;
+
+ assert((((intptr_t)start | (intptr_t)end) % Disassembler::pd_instruction_alignment() == 0), "misaligned insn addr");
+
+ const int show_bytes = false; // for disassembler debugging
+
+ //_version = Disassembler::pd_cpu_version();
+
+ if (!Disassembler::can_decode()) {
+ return NULL;
+ }
+
+ // decode a series of instructions and return the end of the last instruction
+
+ if (_print_raw) {
+ // Print whatever the library wants to print, w/o fancy callbacks.
+ // This is mainly for debugging the library itself.
+ FILE* out = stdout;
+ FILE* xmlout = (_print_raw > 1 ? out : NULL);
+ return (address)
+ (*Disassembler::_decode_instructions)(start, end,
+ NULL, (void*) xmlout,
+ NULL, (void*) out,
+ options());
+ }
+
+ return (address)
+ (*Disassembler::_decode_instructions)(start, end,
+ &event_to_env, (void*) this,
+ &printf_to_env, (void*) this,
+ options());
+}
+
+
+void Disassembler::decode(CodeBlob* cb, outputStream* st) {
+ if (!load_library()) return;
+ decode_env env(cb, st);
+ env.output()->print_cr("Decoding CodeBlob " INTPTR_FORMAT, cb);
+ env.decode_instructions(cb->instructions_begin(), cb->instructions_end());
+}
+
+
+void Disassembler::decode(address start, address end, outputStream* st) {
+ if (!load_library()) return;
+ decode_env env(CodeCache::find_blob_unsafe(start), st);
+ env.decode_instructions(start, end);
+}
+
+void Disassembler::decode(nmethod* nm, outputStream* st) {
+ if (!load_library()) return;
+ decode_env env(nm, st);
+ env.output()->print_cr("Decoding compiled method " INTPTR_FORMAT ":", nm);
+ env.output()->print_cr("Code:");
+
+ unsigned char* p = nm->instructions_begin();
+ unsigned char* end = nm->instructions_end();
+
+ // If there has been profiling, print the buckets.
+ if (FlatProfiler::bucket_start_for(p) != NULL) {
+ unsigned char* p1 = p;
+ int total_bucket_count = 0;
+ while (p1 < end) {
+ unsigned char* p0 = p1;
+ p1 += pd_instruction_alignment();
+ address bucket_pc = FlatProfiler::bucket_start_for(p1);
+ if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p1)
+ total_bucket_count += FlatProfiler::bucket_count_for(p0);
+ }
+ env.set_total_ticks(total_bucket_count);
+ }
+
+ env.decode_instructions(p, end);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/compiler/disassembler.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class decode_env;
+
+// The disassembler prints out assembly code annotated
+// with Java specific information.
+
+class Disassembler {
+ friend class decode_env;
+ private:
+ // this is the type of the dll entry point:
+ typedef void* (*decode_func)(void* start, void* end,
+ void* (*event_callback)(void*, const char*, void*),
+ void* event_stream,
+ int (*printf_callback)(void*, const char*, ...),
+ void* printf_stream,
+ const char* options);
+ // points to the library.
+ static void* _library;
+ // bailout
+ static bool _tried_to_load_library;
+ // points to the decode function.
+ static decode_func _decode_instructions;
+ // tries to load library and return whether it succedded.
+ static bool load_library();
+
+ // Machine dependent stuff
+ #include "incls/_disassembler_pd.hpp.incl"
+
+ public:
+ static bool can_decode() {
+ return (_decode_instructions != NULL) || load_library();
+ }
+ static void decode(CodeBlob *cb, outputStream* st = NULL);
+ static void decode(nmethod* nm, outputStream* st = NULL);
+ static void decode(address begin, address end, outputStream* st = NULL);
+};
--- a/hotspot/src/share/vm/compiler/disassemblerEnv.hpp Thu Apr 10 15:49:16 2008 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-/*
- * Copyright 1997-2002 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- */
-
-// Call-back interface for external disassembler
-class DisassemblerEnv {
- public:
- // printing
- virtual void print_label(intptr_t value) = 0;
- virtual void print_raw(char* str) = 0;
- virtual void print(char* format, ...) = 0;
- // helpers
- virtual char* string_for_offset(intptr_t value) = 0;
- virtual char* string_for_constant(unsigned char* pc, intptr_t value, int is_decimal) = 0;
-};
--- a/hotspot/src/share/vm/compiler/oopMap.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/compiler/oopMap.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -505,8 +505,13 @@
#endif // COMPILER2
}
+#endif //PRODUCT
-static void print_register_type(OopMapValue::oop_types x, VMReg optional, outputStream* st) {
+// Printing code is present in product build for -XX:+PrintAssembly.
+
+static
+void print_register_type(OopMapValue::oop_types x, VMReg optional,
+ outputStream* st) {
switch( x ) {
case OopMapValue::oop_value:
st->print("Oop");
@@ -544,10 +549,12 @@
void OopMap::print_on(outputStream* st) const {
OopMapValue omv;
+ st->print("OopMap{");
for(OopMapStream oms((OopMap*)this); !oms.is_done(); oms.next()) {
omv = oms.current();
omv.print_on(st);
}
+ st->print("off=%d}", (int) offset());
}
@@ -558,12 +565,12 @@
for( i = 0; i < len; i++) {
OopMap* m = at(i);
- st->print_cr("OopMap #%d offset:%p",i,m->offset());
+ st->print_cr("#%d ",i);
m->print_on(st);
- st->print_cr("\n");
+ st->cr();
}
}
-#endif // !PRODUCT
+
//------------------------------DerivedPointerTable---------------------------
--- a/hotspot/src/share/vm/compiler/oopMap.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/compiler/oopMap.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -129,7 +129,7 @@
return reg()->reg2stack();
}
- void print_on(outputStream* st) const PRODUCT_RETURN;
+ void print_on(outputStream* st) const;
void print() const { print_on(tty); }
};
@@ -193,7 +193,7 @@
}
// Printing
- void print_on(outputStream* st) const PRODUCT_RETURN;
+ void print_on(outputStream* st) const;
void print() const { print_on(tty); }
};
@@ -248,7 +248,7 @@
OopClosure* value_fn, OopClosure* dead_fn);
// Printing
- void print_on(outputStream* st) const PRODUCT_RETURN;
+ void print_on(outputStream* st) const;
void print() const { print_on(tty); }
};
--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -225,6 +225,34 @@
assert(_dilatation_factor >= 1.0, "from previous assert");
}
+
+// The field "_initiating_occupancy" represents the occupancy percentage
+// at which we trigger a new collection cycle. Unless explicitly specified
+// via CMSInitiating[Perm]OccupancyFraction (argument "io" below), it
+// is calculated by:
+//
+// Let "f" be MinHeapFreeRatio in
+//
+// _intiating_occupancy = 100-f +
+// f * (CMSTrigger[Perm]Ratio/100)
+// where CMSTrigger[Perm]Ratio is the argument "tr" below.
+//
+// That is, if we assume the heap is at its desired maximum occupancy at the
+// end of a collection, we let CMSTrigger[Perm]Ratio of the (purported) free
+// space be allocated before initiating a new collection cycle.
+//
+void ConcurrentMarkSweepGeneration::init_initiating_occupancy(intx io, intx tr) {
+ assert(io <= 100 && tr >= 0 && tr <= 100, "Check the arguments");
+ if (io >= 0) {
+ _initiating_occupancy = (double)io / 100.0;
+ } else {
+ _initiating_occupancy = ((100 - MinHeapFreeRatio) +
+ (double)(tr * MinHeapFreeRatio) / 100.0)
+ / 100.0;
+ }
+}
+
+
void ConcurrentMarkSweepGeneration::ref_processor_init() {
assert(collector() != NULL, "no collector");
collector()->ref_processor_init();
@@ -520,8 +548,8 @@
_verification_mark_bm(0, Mutex::leaf + 1, "CMS_verification_mark_bm_lock"),
_completed_initialization(false),
_collector_policy(cp),
- _unload_classes(false),
- _unloaded_classes_last_cycle(false),
+ _should_unload_classes(false),
+ _concurrent_cycles_since_last_unload(0),
_sweep_estimate(CMS_SweepWeight, CMS_SweepPadding)
{
if (ExplicitGCInvokesConcurrentAndUnloadsClasses) {
@@ -642,26 +670,11 @@
}
}
- // "initiatingOccupancy" is the occupancy ratio at which we trigger
- // a new collection cycle. Unless explicitly specified via
- // CMSTriggerRatio, it is calculated by:
- // Let "f" be MinHeapFreeRatio in
- //
- // intiatingOccupancy = 100-f +
- // f * (CMSTriggerRatio/100)
- // That is, if we assume the heap is at its desired maximum occupancy at the
- // end of a collection, we let CMSTriggerRatio of the (purported) free
- // space be allocated before initiating a new collection cycle.
- if (CMSInitiatingOccupancyFraction > 0) {
- _initiatingOccupancy = (double)CMSInitiatingOccupancyFraction / 100.0;
- } else {
- _initiatingOccupancy = ((100 - MinHeapFreeRatio) +
- (double)(CMSTriggerRatio *
- MinHeapFreeRatio) / 100.0)
- / 100.0;
- }
+ _cmsGen ->init_initiating_occupancy(CMSInitiatingOccupancyFraction, CMSTriggerRatio);
+ _permGen->init_initiating_occupancy(CMSInitiatingPermOccupancyFraction, CMSTriggerPermRatio);
+
// Clip CMSBootstrapOccupancy between 0 and 100.
- _bootstrap_occupancy = ((double)MIN2((intx)100, MAX2((intx)0, CMSBootstrapOccupancy)))
+ _bootstrap_occupancy = ((double)MIN2((uintx)100, MAX2((uintx)0, CMSBootstrapOccupancy)))
/(double)100;
_full_gcs_since_conc_gc = 0;
@@ -1413,7 +1426,8 @@
gclog_or_tty->print_cr("promotion_rate=%g", stats().promotion_rate());
gclog_or_tty->print_cr("cms_allocation_rate=%g", stats().cms_allocation_rate());
gclog_or_tty->print_cr("occupancy=%3.7f", _cmsGen->occupancy());
- gclog_or_tty->print_cr("initiatingOccupancy=%3.7f", initiatingOccupancy());
+ gclog_or_tty->print_cr("initiatingOccupancy=%3.7f", _cmsGen->initiating_occupancy());
+ gclog_or_tty->print_cr("initiatingPermOccupancy=%3.7f", _permGen->initiating_occupancy());
}
// ------------------------------------------------------------------
@@ -1446,22 +1460,36 @@
// old gen want a collection cycle started. Each may use
// an appropriate criterion for making this decision.
// XXX We need to make sure that the gen expansion
- // criterion dovetails well with this.
- if (_cmsGen->shouldConcurrentCollect(initiatingOccupancy())) {
+ // criterion dovetails well with this. XXX NEED TO FIX THIS
+ if (_cmsGen->should_concurrent_collect()) {
if (Verbose && PrintGCDetails) {
gclog_or_tty->print_cr("CMS old gen initiated");
}
return true;
}
- if (cms_should_unload_classes() &&
- _permGen->shouldConcurrentCollect(initiatingOccupancy())) {
- if (Verbose && PrintGCDetails) {
- gclog_or_tty->print_cr("CMS perm gen initiated");
+ // We start a collection if we believe an incremental collection may fail;
+ // this is not likely to be productive in practice because it's probably too
+ // late anyway.
+ GenCollectedHeap* gch = GenCollectedHeap::heap();
+ assert(gch->collector_policy()->is_two_generation_policy(),
+ "You may want to check the correctness of the following");
+ if (gch->incremental_collection_will_fail()) {
+ if (PrintGCDetails && Verbose) {
+ gclog_or_tty->print("CMSCollector: collect because incremental collection will fail ");
}
return true;
}
+ if (CMSClassUnloadingEnabled && _permGen->should_concurrent_collect()) {
+ bool res = update_should_unload_classes();
+ if (res) {
+ if (Verbose && PrintGCDetails) {
+ gclog_or_tty->print_cr("CMS perm gen initiated");
+ }
+ return true;
+ }
+ }
return false;
}
@@ -1471,32 +1499,36 @@
_permGen->clear_expansion_cause();
}
-bool ConcurrentMarkSweepGeneration::shouldConcurrentCollect(
- double initiatingOccupancy) {
- // We should be conservative in starting a collection cycle. To
- // start too eagerly runs the risk of collecting too often in the
- // extreme. To collect too rarely falls back on full collections,
- // which works, even if not optimum in terms of concurrent work.
- // As a work around for too eagerly collecting, use the flag
- // UseCMSInitiatingOccupancyOnly. This also has the advantage of
- // giving the user an easily understandable way of controlling the
- // collections.
- // We want to start a new collection cycle if any of the following
- // conditions hold:
- // . our current occupancy exceeds the initiating occupancy, or
- // . we recently needed to expand and have not since that expansion,
- // collected, or
- // . we are not using adaptive free lists and linear allocation is
- // going to fail, or
- // . (for old gen) incremental collection has already failed or
- // may soon fail in the near future as we may not be able to absorb
- // promotions.
+// We should be conservative in starting a collection cycle. To
+// start too eagerly runs the risk of collecting too often in the
+// extreme. To collect too rarely falls back on full collections,
+// which works, even if not optimum in terms of concurrent work.
+// As a work around for too eagerly collecting, use the flag
+// UseCMSInitiatingOccupancyOnly. This also has the advantage of
+// giving the user an easily understandable way of controlling the
+// collections.
+// We want to start a new collection cycle if any of the following
+// conditions hold:
+// . our current occupancy exceeds the configured initiating occupancy
+// for this generation, or
+// . we recently needed to expand this space and have not, since that
+// expansion, done a collection of this generation, or
+// . the underlying space believes that it may be a good idea to initiate
+// a concurrent collection (this may be based on criteria such as the
+// following: the space uses linear allocation and linear allocation is
+// going to fail, or there is believed to be excessive fragmentation in
+// the generation, etc... or ...
+// [.(currently done by CMSCollector::shouldConcurrentCollect() only for
+// the case of the old generation, not the perm generation; see CR 6543076):
+// we may be approaching a point at which allocation requests may fail because
+// we will be out of sufficient free space given allocation rate estimates.]
+bool ConcurrentMarkSweepGeneration::should_concurrent_collect() const {
+
assert_lock_strong(freelistLock());
-
- if (occupancy() > initiatingOccupancy) {
+ if (occupancy() > initiating_occupancy()) {
if (PrintGCDetails && Verbose) {
gclog_or_tty->print(" %s: collect because of occupancy %f / %f ",
- short_name(), occupancy(), initiatingOccupancy);
+ short_name(), occupancy(), initiating_occupancy());
}
return true;
}
@@ -1510,20 +1542,9 @@
}
return true;
}
- GenCollectedHeap* gch = GenCollectedHeap::heap();
- assert(gch->collector_policy()->is_two_generation_policy(),
- "You may want to check the correctness of the following");
- if (gch->incremental_collection_will_fail()) {
+ if (_cmsSpace->should_concurrent_collect()) {
if (PrintGCDetails && Verbose) {
- gclog_or_tty->print(" %s: collect because incremental collection will fail ",
- short_name());
- }
- return true;
- }
- if (!_cmsSpace->adaptive_freelists() &&
- _cmsSpace->linearAllocationWouldFail()) {
- if (PrintGCDetails && Verbose) {
- gclog_or_tty->print(" %s: collect because of linAB ",
+ gclog_or_tty->print(" %s: collect because cmsSpace says so ",
short_name());
}
return true;
@@ -1970,8 +1991,9 @@
"Should have been NULL'd before baton was passed");
reset(false /* == !asynch */);
_cmsGen->reset_after_compaction();
-
- if (verifying() && !cms_should_unload_classes()) {
+ _concurrent_cycles_since_last_unload = 0;
+
+ if (verifying() && !should_unload_classes()) {
perm_gen_verify_bit_map()->clear_all();
}
@@ -2098,6 +2120,7 @@
{
bool safepoint_check = Mutex::_no_safepoint_check_flag;
MutexLockerEx hl(Heap_lock, safepoint_check);
+ FreelistLocker fll(this);
MutexLockerEx x(CGC_lock, safepoint_check);
if (_foregroundGCIsActive || !UseAsyncConcMarkSweepGC) {
// The foreground collector is active or we're
@@ -2112,13 +2135,9 @@
// a new cycle.
clear_expansion_cause();
}
- _unloaded_classes_last_cycle = cms_should_unload_classes(); // ... from last cycle
- // This controls class unloading in response to an explicit gc request.
- // If ExplicitGCInvokesConcurrentAndUnloadsClasses is set, then
- // we will unload classes even if CMSClassUnloadingEnabled is not set.
- // See CR 6541037 and related CRs.
- _unload_classes = _full_gc_requested // ... for this cycle
- && ExplicitGCInvokesConcurrentAndUnloadsClasses;
+ // Decide if we want to enable class unloading as part of the
+ // ensuing concurrent GC cycle.
+ update_should_unload_classes();
_full_gc_requested = false; // acks all outstanding full gc requests
// Signal that we are about to start a collection
gch->increment_total_full_collections(); // ... starting a collection cycle
@@ -3047,21 +3066,62 @@
}
#endif // PRODUCT
+// Decide if we want to enable class unloading as part of the
+// ensuing concurrent GC cycle. We will collect the perm gen and
+// unload classes if it's the case that:
+// (1) an explicit gc request has been made and the flag
+// ExplicitGCInvokesConcurrentAndUnloadsClasses is set, OR
+// (2) (a) class unloading is enabled at the command line, and
+// (b) (i) perm gen threshold has been crossed, or
+// (ii) old gen is getting really full, or
+// (iii) the previous N CMS collections did not collect the
+// perm gen
+// NOTE: Provided there is no change in the state of the heap between
+// calls to this method, it should have idempotent results. Moreover,
+// its results should be monotonically increasing (i.e. going from 0 to 1,
+// but not 1 to 0) between successive calls between which the heap was
+// not collected. For the implementation below, it must thus rely on
+// the property that concurrent_cycles_since_last_unload()
+// will not decrease unless a collection cycle happened and that
+// _permGen->should_concurrent_collect() and _cmsGen->is_too_full() are
+// themselves also monotonic in that sense. See check_monotonicity()
+// below.
+bool CMSCollector::update_should_unload_classes() {
+ _should_unload_classes = false;
+ // Condition 1 above
+ if (_full_gc_requested && ExplicitGCInvokesConcurrentAndUnloadsClasses) {
+ _should_unload_classes = true;
+ } else if (CMSClassUnloadingEnabled) { // Condition 2.a above
+ // Disjuncts 2.b.(i,ii,iii) above
+ _should_unload_classes = (concurrent_cycles_since_last_unload() >=
+ CMSClassUnloadingMaxInterval)
+ || _permGen->should_concurrent_collect()
+ || _cmsGen->is_too_full();
+ }
+ return _should_unload_classes;
+}
+
+bool ConcurrentMarkSweepGeneration::is_too_full() const {
+ bool res = should_concurrent_collect();
+ res = res && (occupancy() > (double)CMSIsTooFullPercentage/100.0);
+ return res;
+}
+
void CMSCollector::setup_cms_unloading_and_verification_state() {
const bool should_verify = VerifyBeforeGC || VerifyAfterGC || VerifyDuringGC
|| VerifyBeforeExit;
const int rso = SharedHeap::SO_Symbols | SharedHeap::SO_Strings
| SharedHeap::SO_CodeCache;
- if (cms_should_unload_classes()) { // Should unload classes this cycle
+ if (should_unload_classes()) { // Should unload classes this cycle
remove_root_scanning_option(rso); // Shrink the root set appropriately
set_verifying(should_verify); // Set verification state for this cycle
return; // Nothing else needs to be done at this time
}
// Not unloading classes this cycle
- assert(!cms_should_unload_classes(), "Inconsitency!");
- if ((!verifying() || cms_unloaded_classes_last_cycle()) && should_verify) {
+ assert(!should_unload_classes(), "Inconsitency!");
+ if ((!verifying() || unloaded_classes_last_cycle()) && should_verify) {
// We were not verifying, or we _were_ unloading classes in the last cycle,
// AND some verification options are enabled this cycle; in this case,
// we must make sure that the deadness map is allocated if not already so,
@@ -4693,7 +4753,7 @@
GenCollectedHeap* gch = GenCollectedHeap::heap();
- if (cms_should_unload_classes()) {
+ if (should_unload_classes()) {
CodeCache::gc_prologue();
}
assert(haveFreelistLocks(), "must have free list locks");
@@ -4753,7 +4813,7 @@
verify_work_stacks_empty();
verify_overflow_empty();
- if (cms_should_unload_classes()) {
+ if (should_unload_classes()) {
CodeCache::gc_epilogue();
}
@@ -5623,7 +5683,7 @@
verify_work_stacks_empty();
}
- if (cms_should_unload_classes()) {
+ if (should_unload_classes()) {
{
TraceTime t("class unloading", PrintGCDetails, false, gclog_or_tty);
@@ -5726,7 +5786,7 @@
// this cycle, we preserve the perm gen object "deadness" information
// in the perm_gen_verify_bit_map. In order to do that we traverse
// all blocks in perm gen and mark all dead objects.
- if (verifying() && !cms_should_unload_classes()) {
+ if (verifying() && !should_unload_classes()) {
assert(perm_gen_verify_bit_map()->sizeInBits() != 0,
"Should have already been allocated");
MarkDeadObjectsClosure mdo(this, _permGen->cmsSpace(),
@@ -5753,7 +5813,7 @@
}
// Now repeat for perm gen
- if (cms_should_unload_classes()) {
+ if (should_unload_classes()) {
CMSTokenSyncWithLocks ts(true, _permGen->freelistLock(),
bitMapLock());
sweepWork(_permGen, asynch);
@@ -5775,7 +5835,7 @@
// already have needed locks
sweepWork(_cmsGen, asynch);
- if (cms_should_unload_classes()) {
+ if (should_unload_classes()) {
sweepWork(_permGen, asynch);
}
// Update heap occupancy information which is used as
@@ -5937,6 +5997,11 @@
}
gen->cmsSpace()->sweep_completed();
gen->cmsSpace()->endSweepFLCensus(sweepCount());
+ if (should_unload_classes()) { // unloaded classes this cycle,
+ _concurrent_cycles_since_last_unload = 0; // ... reset count
+ } else { // did not unload classes,
+ _concurrent_cycles_since_last_unload++; // ... increment count
+ }
}
// Reset CMS data structures (for now just the marking bit map)
@@ -7194,7 +7259,7 @@
_revisitStack(revisitStack),
_finger(finger),
_parent(parent),
- _should_remember_klasses(collector->cms_should_unload_classes())
+ _should_remember_klasses(collector->should_unload_classes())
{ }
Par_PushOrMarkClosure::Par_PushOrMarkClosure(CMSCollector* collector,
@@ -7217,7 +7282,7 @@
_finger(finger),
_global_finger_addr(global_finger_addr),
_parent(parent),
- _should_remember_klasses(collector->cms_should_unload_classes())
+ _should_remember_klasses(collector->should_unload_classes())
{ }
@@ -7360,7 +7425,7 @@
_mark_stack(mark_stack),
_revisit_stack(revisit_stack),
_concurrent_precleaning(concurrent_precleaning),
- _should_remember_klasses(collector->cms_should_unload_classes())
+ _should_remember_klasses(collector->should_unload_classes())
{
assert(_ref_processor != NULL, "_ref_processor shouldn't be NULL");
}
@@ -7422,7 +7487,7 @@
_bit_map(bit_map),
_work_queue(work_queue),
_revisit_stack(revisit_stack),
- _should_remember_klasses(collector->cms_should_unload_classes())
+ _should_remember_klasses(collector->should_unload_classes())
{
assert(_ref_processor != NULL, "_ref_processor shouldn't be NULL");
}
@@ -7944,7 +8009,7 @@
#ifdef DEBUG
if (oop(addr)->klass() != NULL &&
- ( !_collector->cms_should_unload_classes()
+ ( !_collector->should_unload_classes()
|| oop(addr)->is_parsable())) {
// Ignore mark word because we are running concurrent with mutators
assert(oop(addr)->is_oop(true), "live block should be an oop");
@@ -7957,7 +8022,7 @@
} else {
// This should be an initialized object that's alive.
assert(oop(addr)->klass() != NULL &&
- (!_collector->cms_should_unload_classes()
+ (!_collector->should_unload_classes()
|| oop(addr)->is_parsable()),
"Should be an initialized object");
// Ignore mark word because we are running concurrent with mutators
--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -535,13 +535,16 @@
// In support of ExplicitGCInvokesConcurrent
static bool _full_gc_requested;
unsigned int _collection_count_start;
+
// Should we unload classes this concurrent cycle?
- // Set in response to a concurrent full gc request.
- bool _unload_classes;
- bool _unloaded_classes_last_cycle;
+ bool _should_unload_classes;
+ unsigned int _concurrent_cycles_since_last_unload;
+ unsigned int concurrent_cycles_since_last_unload() const {
+ return _concurrent_cycles_since_last_unload;
+ }
// Did we (allow) unload classes in the previous concurrent cycle?
- bool cms_unloaded_classes_last_cycle() const {
- return _unloaded_classes_last_cycle || CMSClassUnloadingEnabled;
+ bool unloaded_classes_last_cycle() const {
+ return concurrent_cycles_since_last_unload() == 0;
}
// Verification support
@@ -651,8 +654,6 @@
// number of full gc's since the last concurrent gc.
uint _full_gcs_since_conc_gc;
- // if occupancy exceeds this, start a new gc cycle
- double _initiatingOccupancy;
// occupancy used for bootstrapping stats
double _bootstrap_occupancy;
@@ -825,7 +826,6 @@
Mutex* bitMapLock() const { return _markBitMap.lock(); }
static CollectorState abstract_state() { return _collectorState; }
- double initiatingOccupancy() const { return _initiatingOccupancy; }
bool should_abort_preclean() const; // Whether preclean should be aborted.
size_t get_eden_used() const;
@@ -849,11 +849,10 @@
// In support of ExplicitGCInvokesConcurrent
static void request_full_gc(unsigned int full_gc_count);
// Should we unload classes in a particular concurrent cycle?
- bool cms_should_unload_classes() const {
- assert(!_unload_classes || ExplicitGCInvokesConcurrentAndUnloadsClasses,
- "Inconsistency; see CR 6541037");
- return _unload_classes || CMSClassUnloadingEnabled;
+ bool should_unload_classes() const {
+ return _should_unload_classes;
}
+ bool update_should_unload_classes();
void direct_allocated(HeapWord* start, size_t size);
@@ -1022,6 +1021,10 @@
_incremental_collection_failed = false;
}
+ // accessors
+ void set_expansion_cause(CMSExpansionCause::Cause v) { _expansion_cause = v;}
+ CMSExpansionCause::Cause expansion_cause() const { return _expansion_cause; }
+
private:
// For parallel young-gen GC support.
CMSParGCThreadState** _par_gc_thread_states;
@@ -1029,10 +1032,6 @@
// Reason generation was expanded
CMSExpansionCause::Cause _expansion_cause;
- // accessors
- void set_expansion_cause(CMSExpansionCause::Cause v) { _expansion_cause = v;}
- CMSExpansionCause::Cause expansion_cause() { return _expansion_cause; }
-
// In support of MinChunkSize being larger than min object size
const double _dilatation_factor;
@@ -1045,6 +1044,10 @@
CollectionTypes _debug_collection_type;
+ // Fraction of current occupancy at which to start a CMS collection which
+ // will collect this generation (at least).
+ double _initiating_occupancy;
+
protected:
// Grow generation by specified size (returns false if unable to grow)
bool grow_by(size_t bytes);
@@ -1060,6 +1063,10 @@
// space.
size_t max_available() const;
+ // getter and initializer for _initiating_occupancy field.
+ double initiating_occupancy() const { return _initiating_occupancy; }
+ void init_initiating_occupancy(intx io, intx tr);
+
public:
ConcurrentMarkSweepGeneration(ReservedSpace rs, size_t initial_byte_size,
int level, CardTableRS* ct,
@@ -1103,7 +1110,7 @@
size_t capacity() const;
size_t used() const;
size_t free() const;
- double occupancy() { return ((double)used())/((double)capacity()); }
+ double occupancy() const { return ((double)used())/((double)capacity()); }
size_t contiguous_available() const;
size_t unsafe_max_alloc_nogc() const;
@@ -1158,8 +1165,8 @@
bool younger_handles_promotion_failure) const;
bool should_collect(bool full, size_t size, bool tlab);
- // XXXPERM
- bool shouldConcurrentCollect(double initiatingOccupancy); // XXXPERM
+ virtual bool should_concurrent_collect() const;
+ virtual bool is_too_full() const;
void collect(bool full,
bool clear_all_soft_refs,
size_t size,
--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.inline.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.inline.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -267,7 +267,7 @@
(_permGen->cmsSpace()->is_in_reserved(addr)
&& _permGen->cmsSpace()->block_is_obj(addr)),
"must be object");
- return cms_should_unload_classes() &&
+ return should_unload_classes() &&
_collectorState == Sweeping &&
!_markBitMap.isMarked(addr);
}
--- a/hotspot/src/share/vm/includeDB_compiler1 Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/includeDB_compiler1 Fri Apr 11 09:56:35 2008 -0400
@@ -323,7 +323,7 @@
c1_Runtime1.cpp compilationPolicy.hpp
c1_Runtime1.cpp compiledIC.hpp
c1_Runtime1.cpp copy.hpp
-c1_Runtime1.cpp disassembler_<arch>.hpp
+c1_Runtime1.cpp disassembler.hpp
c1_Runtime1.cpp events.hpp
c1_Runtime1.cpp interfaceSupport.hpp
c1_Runtime1.cpp interpreter.hpp
--- a/hotspot/src/share/vm/includeDB_core Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/includeDB_core Fri Apr 11 09:56:35 2008 -0400
@@ -244,7 +244,7 @@
assembler.inline.hpp assembler.hpp
assembler.inline.hpp codeBuffer.hpp
-assembler.inline.hpp disassembler_<arch>.hpp
+assembler.inline.hpp disassembler.hpp
assembler.inline.hpp threadLocalStorage.hpp
assembler_<arch_model>.cpp assembler_<arch_model>.inline.hpp
@@ -946,7 +946,7 @@
codeBlob.cpp bytecode.hpp
codeBlob.cpp codeBlob.hpp
codeBlob.cpp codeCache.hpp
-codeBlob.cpp disassembler_<arch>.hpp
+codeBlob.cpp disassembler.hpp
codeBlob.cpp forte.hpp
codeBlob.cpp handles.inline.hpp
codeBlob.cpp heap.hpp
@@ -968,7 +968,7 @@
codeBuffer.cpp codeBuffer.hpp
codeBuffer.cpp copy.hpp
-codeBuffer.cpp disassembler_<arch>.hpp
+codeBuffer.cpp disassembler.hpp
codeBuffer.hpp assembler.hpp
codeBuffer.hpp oopRecorder.hpp
@@ -1323,7 +1323,7 @@
debug.cpp collectedHeap.hpp
debug.cpp compileBroker.hpp
debug.cpp defaultStream.hpp
-debug.cpp disassembler_<arch>.hpp
+debug.cpp disassembler.hpp
debug.cpp events.hpp
debug.cpp frame.hpp
debug.cpp heapDumper.hpp
@@ -1442,7 +1442,7 @@
deoptimization.hpp frame.inline.hpp
depChecker_<arch>.cpp depChecker_<arch>.hpp
-depChecker_<arch>.cpp disassembler_<arch>.hpp
+depChecker_<arch>.cpp disassembler.hpp
depChecker_<arch>.cpp hpi.hpp
dependencies.cpp ciArrayKlass.hpp
@@ -1472,21 +1472,21 @@
dictionary.hpp oop.hpp
dictionary.hpp systemDictionary.hpp
-disassemblerEnv.hpp globals.hpp
-
-disassembler_<arch>.cpp cardTableModRefBS.hpp
-disassembler_<arch>.cpp codeCache.hpp
-disassembler_<arch>.cpp collectedHeap.hpp
-disassembler_<arch>.cpp depChecker_<arch>.hpp
-disassembler_<arch>.cpp disassembler_<arch>.hpp
-disassembler_<arch>.cpp fprofiler.hpp
-disassembler_<arch>.cpp handles.inline.hpp
-disassembler_<arch>.cpp hpi.hpp
-disassembler_<arch>.cpp stubCodeGenerator.hpp
-disassembler_<arch>.cpp stubRoutines.hpp
-
-disassembler_<arch>.hpp disassemblerEnv.hpp
-disassembler_<arch>.hpp os_<os_family>.inline.hpp
+disassembler_<arch>.hpp generate_platform_dependent_include
+
+disassembler.cpp cardTableModRefBS.hpp
+disassembler.cpp codeCache.hpp
+disassembler.cpp collectedHeap.hpp
+disassembler.cpp depChecker_<arch>.hpp
+disassembler.cpp disassembler.hpp
+disassembler.cpp fprofiler.hpp
+disassembler.cpp handles.inline.hpp
+disassembler.cpp hpi.hpp
+disassembler.cpp stubCodeGenerator.hpp
+disassembler.cpp stubRoutines.hpp
+
+disassembler.hpp globals.hpp
+disassembler.hpp os_<os_family>.inline.hpp
dtraceAttacher.cpp codeCache.hpp
dtraceAttacher.cpp deoptimization.hpp
@@ -2909,7 +2909,7 @@
nmethod.cpp compileLog.hpp
nmethod.cpp compiledIC.hpp
nmethod.cpp compilerOracle.hpp
-nmethod.cpp disassembler_<arch>.hpp
+nmethod.cpp disassembler.hpp
nmethod.cpp dtrace.hpp
nmethod.cpp events.hpp
nmethod.cpp jvmtiRedefineClassesTrace.hpp
@@ -3763,7 +3763,7 @@
statSampler.hpp task.hpp
stubCodeGenerator.cpp assembler_<arch_model>.inline.hpp
-stubCodeGenerator.cpp disassembler_<arch>.hpp
+stubCodeGenerator.cpp disassembler.hpp
stubCodeGenerator.cpp forte.hpp
stubCodeGenerator.cpp oop.inline.hpp
stubCodeGenerator.cpp stubCodeGenerator.hpp
@@ -4530,7 +4530,7 @@
vmreg_<arch>.hpp generate_platform_dependent_include
vtableStubs.cpp allocation.inline.hpp
-vtableStubs.cpp disassembler_<arch>.hpp
+vtableStubs.cpp disassembler.hpp
vtableStubs.cpp forte.hpp
vtableStubs.cpp handles.inline.hpp
vtableStubs.cpp instanceKlass.hpp
--- a/hotspot/src/share/vm/memory/gcLocker.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/memory/gcLocker.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -184,7 +184,9 @@
Thread *_thread;
public:
#ifdef ASSERT
- No_Safepoint_Verifier(bool activated = true, bool verifygc = true ) : No_GC_Verifier(verifygc) {
+ No_Safepoint_Verifier(bool activated = true, bool verifygc = true ) :
+ No_GC_Verifier(verifygc),
+ _activated(activated) {
_thread = Thread::current();
if (_activated) {
_thread->_allow_allocation_count++;
--- a/hotspot/src/share/vm/oops/methodOop.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/oops/methodOop.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -888,10 +888,11 @@
symbolHandle name (THREAD, sym);
klassOop klass = SystemDictionary::resolve_or_null(name, class_loader,
protection_domain, THREAD);
- // We are loading classes eagerly. If a ClassNotFoundException was generated,
- // be sure to ignore it.
+ // We are loading classes eagerly. If a ClassNotFoundException or
+ // a LinkageError was generated, be sure to ignore it.
if (HAS_PENDING_EXCEPTION) {
- if (PENDING_EXCEPTION->is_a(SystemDictionary::classNotFoundException_klass())) {
+ if (PENDING_EXCEPTION->is_a(SystemDictionary::classNotFoundException_klass()) ||
+ PENDING_EXCEPTION->is_a(SystemDictionary::linkageError_klass())) {
CLEAR_PENDING_EXCEPTION;
} else {
return false;
--- a/hotspot/src/share/vm/opto/addnode.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/addnode.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -70,9 +70,14 @@
// Convert "Load+x" into "x+Load".
// Now check for loads
- if( in2->is_Load() ) return false;
- // Left is a Load and Right is not; move it right.
- if( in1->is_Load() ) {
+ if (in2->is_Load()) {
+ if (!in1->is_Load()) {
+ // already x+Load to return
+ return false;
+ }
+ // both are loads, so fall through to sort inputs by idx
+ } else if( in1->is_Load() ) {
+ // Left is a Load and Right is not; move it right.
add->swap_edges(1, 2);
return true;
}
--- a/hotspot/src/share/vm/opto/compile.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/compile.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -456,7 +456,15 @@
}
TraceTime t1("Total compilation time", &_t_totalCompilation, TimeCompiler, TimeCompiler2);
TraceTime t2(NULL, &_t_methodCompilation, TimeCompiler, false);
- set_print_assembly(PrintOptoAssembly || _method->should_print_assembly());
+ bool print_opto_assembly = PrintOptoAssembly || _method->has_option("PrintOptoAssembly");
+ if (!print_opto_assembly) {
+ bool print_assembly = (PrintAssembly || _method->should_print_assembly());
+ if (print_assembly && !Disassembler::can_decode()) {
+ tty->print_cr("PrintAssembly request changed to PrintOptoAssembly");
+ print_opto_assembly = true;
+ }
+ }
+ set_print_assembly(print_opto_assembly);
#endif
if (ProfileTraps) {
--- a/hotspot/src/share/vm/opto/escape.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/escape.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -256,39 +256,49 @@
}
}
-void ConnectionGraph::remove_deferred(uint ni) {
- VectorSet visited(Thread::current()->resource_area());
+void ConnectionGraph::remove_deferred(uint ni, GrowableArray<uint>* deferred_edges, VectorSet* visited) {
+ // This method is most expensive during ConnectionGraph construction.
+ // Reuse vectorSet and an additional growable array for deferred edges.
+ deferred_edges->clear();
+ visited->Clear();
uint i = 0;
PointsToNode *ptn = ptnode_adr(ni);
- while(i < ptn->edge_count()) {
+ // Mark current edges as visited and move deferred edges to separate array.
+ for (; i < ptn->edge_count(); i++) {
uint t = ptn->edge_target(i);
- PointsToNode *ptt = ptnode_adr(t);
- if (ptn->edge_type(i) != PointsToNode::DeferredEdge) {
- i++;
- } else {
+#ifdef ASSERT
+ assert(!visited->test_set(t), "expecting no duplications");
+#else
+ visited->set(t);
+#endif
+ if (ptn->edge_type(i) == PointsToNode::DeferredEdge) {
ptn->remove_edge(t, PointsToNode::DeferredEdge);
- if(!visited.test_set(t)) {
- for (uint j = 0; j < ptt->edge_count(); j++) {
- uint n1 = ptt->edge_target(j);
- PointsToNode *pt1 = ptnode_adr(n1);
- switch(ptt->edge_type(j)) {
- case PointsToNode::PointsToEdge:
- add_pointsto_edge(ni, n1);
- if(n1 == _phantom_object) {
- // Special case - field set outside (globally escaping).
- ptn->set_escape_state(PointsToNode::GlobalEscape);
- }
- break;
- case PointsToNode::DeferredEdge:
- add_deferred_edge(ni, n1);
- break;
- case PointsToNode::FieldEdge:
- assert(false, "invalid connection graph");
- break;
+ deferred_edges->append(t);
+ }
+ }
+ for (int next = 0; next < deferred_edges->length(); ++next) {
+ uint t = deferred_edges->at(next);
+ PointsToNode *ptt = ptnode_adr(t);
+ for (uint j = 0; j < ptt->edge_count(); j++) {
+ uint n1 = ptt->edge_target(j);
+ if (visited->test_set(n1))
+ continue;
+ switch(ptt->edge_type(j)) {
+ case PointsToNode::PointsToEdge:
+ add_pointsto_edge(ni, n1);
+ if(n1 == _phantom_object) {
+ // Special case - field set outside (globally escaping).
+ ptn->set_escape_state(PointsToNode::GlobalEscape);
}
- }
+ break;
+ case PointsToNode::DeferredEdge:
+ deferred_edges->append(n1);
+ break;
+ case PointsToNode::FieldEdge:
+ assert(false, "invalid connection graph");
+ break;
}
}
}
@@ -1243,8 +1253,10 @@
}
VectorSet ptset(Thread::current()->resource_area());
- GrowableArray<Node*> alloc_worklist;
- GrowableArray<int> worklist;
+ GrowableArray<Node*> alloc_worklist;
+ GrowableArray<int> worklist;
+ GrowableArray<uint> deferred_edges;
+ VectorSet visited(Thread::current()->resource_area());
// remove deferred edges from the graph and collect
// information we will need for type splitting
@@ -1254,7 +1266,7 @@
PointsToNode::NodeType nt = ptn->node_type();
Node *n = ptn->_node;
if (nt == PointsToNode::LocalVar || nt == PointsToNode::Field) {
- remove_deferred(ni);
+ remove_deferred(ni, &deferred_edges, &visited);
if (n->is_AddP()) {
// If this AddP computes an address which may point to more that one
// object, nothing the address points to can be scalar replaceable.
--- a/hotspot/src/share/vm/opto/escape.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/escape.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -269,7 +269,7 @@
// Remove outgoing deferred edges from the node referenced by "ni".
// Any outgoing edges from the target of the deferred edge are copied
// to "ni".
- void remove_deferred(uint ni);
+ void remove_deferred(uint ni, GrowableArray<uint>* deferred_edges, VectorSet* visited);
Node_Array _node_map; // used for bookeeping during type splitting
// Used for the following purposes:
--- a/hotspot/src/share/vm/opto/loopUnswitch.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/loopUnswitch.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -51,6 +51,9 @@
if( !LoopUnswitching ) {
return false;
}
+ if (!_head->is_Loop()) {
+ return false;
+ }
uint nodes_left = MaxNodeLimit - phase->C->unique();
if (2 * _body.size() > nodes_left) {
return false; // Too speculative if running low on nodes.
--- a/hotspot/src/share/vm/opto/loopopts.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/loopopts.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -2257,6 +2257,9 @@
//
bool PhaseIdealLoop::partial_peel( IdealLoopTree *loop, Node_List &old_new ) {
+ if (!loop->_head->is_Loop()) {
+ return false; }
+
LoopNode *head = loop->_head->as_Loop();
if (head->is_partial_peel_loop() || head->partial_peel_has_failed()) {
--- a/hotspot/src/share/vm/opto/parse3.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/parse3.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -408,7 +408,7 @@
jint dim_con = find_int_con(length[j], -1);
expand_fanout *= dim_con;
expand_count += expand_fanout; // count the level-J sub-arrays
- if (dim_con < 0
+ if (dim_con <= 0
|| dim_con > expand_limit
|| expand_count > expand_limit) {
expand_count = 0;
--- a/hotspot/src/share/vm/opto/superword.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/opto/superword.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -65,6 +65,11 @@
Node *cl_exit = cl->loopexit();
if (cl_exit->in(0) != lpt->_head) return;
+ // Make sure the are no extra control users of the loop backedge
+ if (cl->back_control()->outcnt() != 1) {
+ return;
+ }
+
// Check for pre-loop ending with CountedLoopEnd(Bool(Cmp(x,Opaque1(limit))))
CountedLoopEndNode* pre_end = get_pre_loop_end(cl);
if (pre_end == NULL) return;
--- a/hotspot/src/share/vm/prims/forte.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/prims/forte.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -25,6 +25,20 @@
# include "incls/_precompiled.incl"
# include "incls/_forte.cpp.incl"
+// These name match the names reported by the forte quality kit
+enum {
+ ticks_no_Java_frame = 0,
+ ticks_no_class_load = -1,
+ ticks_GC_active = -2,
+ ticks_unknown_not_Java = -3,
+ ticks_not_walkable_not_Java = -4,
+ ticks_unknown_Java = -5,
+ ticks_not_walkable_Java = -6,
+ ticks_unknown_state = -7,
+ ticks_thread_exit = -8,
+ ticks_deopt = -9,
+ ticks_safepoint = -10
+};
//-------------------------------------------------------
@@ -41,297 +55,29 @@
};
-static void forte_is_walkable_compiled_frame(frame* fr, RegisterMap* map,
+static void is_decipherable_compiled_frame(frame* fr, RegisterMap* map,
bool* is_compiled_p, bool* is_walkable_p);
-static bool forte_is_walkable_interpreted_frame(frame* fr,
- methodOop* method_p, int* bci_p);
+static bool is_decipherable_interpreted_frame(JavaThread* thread,
+ frame* fr,
+ methodOop* method_p,
+ int* bci_p);
-// A Forte specific version of frame:safe_for_sender().
-static bool forte_safe_for_sender(frame* fr, JavaThread *thread) {
- bool ret_value = false; // be pessimistic
-
-#ifdef COMPILER2
-#if defined(IA32) || defined(AMD64)
- {
- // This check is the same as the standard safe_for_sender()
- // on IA32 or AMD64 except that NULL FP values are tolerated
- // for C2.
- address sp = (address)fr->sp();
- address fp = (address)fr->fp();
- ret_value = sp != NULL && sp <= thread->stack_base() &&
- sp >= thread->stack_base() - thread->stack_size() &&
- (fp == NULL || (fp <= thread->stack_base() &&
- fp >= thread->stack_base() - thread->stack_size()));
-
- // We used to use standard safe_for_sender() when we are supposed
- // to be executing Java code. However, that prevents us from
- // walking some intrinsic stacks so now we have to be more refined.
- // If we passed the above check and we have a NULL frame pointer
- // and we are supposed to be executing Java code, then we have a
- // couple of more checks to make.
- if (ret_value && fp == NULL && (thread->thread_state() == _thread_in_Java
- || thread->thread_state() == _thread_in_Java_trans)) {
-
- if (fr->is_interpreted_frame()) {
- // interpreted frames don't really have a NULL frame pointer
- return false;
- } else if (CodeCache::find_blob(fr->pc()) == NULL) {
- // the NULL frame pointer should be associated with generated code
- return false;
- }
- }
- }
-
-#else // !(IA32 || AMD64)
- ret_value = fr->safe_for_sender(thread);
-#endif // IA32 || AMD64
-
-#else // !COMPILER2
- ret_value = fr->safe_for_sender(thread);
-#endif // COMPILER2
-
- if (!ret_value) {
- return ret_value; // not safe, nothing more to do
- }
-
- address sp1;
-
-#ifdef SPARC
- // On Solaris SPARC, when a compiler frame has an interpreted callee
- // the _interpreter_sp_adjustment field contains the adjustment to
- // this frame's SP made by that interpreted callee.
- // For AsyncGetCallTrace(), we need to verify that the resulting SP
- // is valid for the specified thread's stack.
- sp1 = (address)fr->sp();
- address sp2 = (address)fr->unextended_sp();
-
- // If the second SP is NULL, then the _interpreter_sp_adjustment
- // field simply adjusts this frame's SP to NULL and the frame is
- // not safe. This strange value can be set in the frame constructor
- // when our peek into the interpreted callee's adjusted value for
- // this frame's SP finds a NULL. This can happen when SIGPROF
- // catches us while we are creating the interpreter frame.
- //
- if (sp2 == NULL ||
-
- // If the two SPs are different, then _interpreter_sp_adjustment
- // is non-zero and we need to validate the second SP. We invert
- // the range check from frame::safe_for_sender() and bail out
- // if the second SP is not safe.
- (sp1 != sp2 && !(sp2 <= thread->stack_base()
- && sp2 >= (thread->stack_base() - thread->stack_size())))) {
- return false;
- }
-#endif // SPARC
-
- if (fr->is_entry_frame()) {
- // This frame thinks it is an entry frame; we need to validate
- // the JavaCallWrapper pointer.
- // Note: frame::entry_frame_is_first() assumes that the
- // JavaCallWrapper has a non-NULL _anchor field. We don't
- // check that here (yet) since we've never seen a failure
- // due to a NULL _anchor field.
- // Update: Originally this check was done only for SPARC. However,
- // this failure has now been seen on C2 C86. I have no reason to
- // believe that this is not a general issue so I'm enabling the
- // check for all compilers on all supported platforms.
-#ifdef COMPILER2
-#if defined(IA32) || defined(AMD64)
- if (fr->fp() == NULL) {
- // C2 X86 allows NULL frame pointers, but if we have one then
- // we cannot call entry_frame_call_wrapper().
- return false;
- }
-#endif // IA32 || AMD64
-#endif // COMPILER2
-
- sp1 = (address)fr->entry_frame_call_wrapper();
- // We invert the range check from frame::safe_for_sender() and
- // bail out if the JavaCallWrapper * is not safe.
- if (!(sp1 <= thread->stack_base()
- && sp1 >= (thread->stack_base() - thread->stack_size()))) {
- return false;
- }
- }
-
- return ret_value;
-}
-// Unknown compiled frames have caused assertion failures on Solaris
-// X86. This code also detects unknown compiled frames on Solaris
-// SPARC, but no assertion failures have been observed. However, I'm
-// paranoid so I'm enabling this code whenever we have a compiler.
-//
-// Returns true if the specified frame is an unknown compiled frame
-// and false otherwise.
-static bool is_unknown_compiled_frame(frame* fr, JavaThread *thread) {
- bool ret_value = false; // be optimistic
-
- // This failure mode only occurs when the thread is in state
- // _thread_in_Java so we are okay for this check for any other
- // thread state.
- //
- // Note: _thread_in_Java does not always mean that the thread
- // is executing Java code. AsyncGetCallTrace() has caught
- // threads executing in JRT_LEAF() routines when the state
- // will also be _thread_in_Java.
- if (thread->thread_state() != _thread_in_Java) {
- return ret_value;
- }
-
- // This failure mode only occurs with compiled frames so we are
- // okay for this check for both entry and interpreted frames.
- if (fr->is_entry_frame() || fr->is_interpreted_frame()) {
- return ret_value;
- }
-
- // This failure mode only occurs when the compiled frame's PC
- // is in the code cache so we are okay for this check if the
- // PC is not in the code cache.
- CodeBlob* cb = CodeCache::find_blob(fr->pc());
- if (cb == NULL) {
- return ret_value;
- }
+vframeStreamForte::vframeStreamForte(JavaThread *jt,
+ frame fr,
+ bool stop_at_java_call_stub) : vframeStreamCommon(jt) {
- // We have compiled code in the code cache so it is time for
- // the final check: let's see if any frame type is set
- ret_value = !(
- // is_entry_frame() is checked above
- // testers that are a subset of is_entry_frame():
- // is_first_frame()
- fr->is_java_frame()
- // testers that are a subset of is_java_frame():
- // is_interpreted_frame()
- // is_compiled_frame()
- || fr->is_native_frame()
- || fr->is_runtime_frame()
- || fr->is_safepoint_blob_frame()
- );
-
- // If there is no frame type set, then we have an unknown compiled
- // frame and sender() should not be called on it.
-
- return ret_value;
-}
-
-#define DebugNonSafepoints_IS_CLEARED \
- (!FLAG_IS_DEFAULT(DebugNonSafepoints) && !DebugNonSafepoints)
-
-// if -XX:-DebugNonSafepoints, then top-frame will be skipped
-vframeStreamForte::vframeStreamForte(JavaThread *jt, frame fr,
- bool stop_at_java_call_stub) : vframeStreamCommon(jt) {
_stop_at_java_call_stub = stop_at_java_call_stub;
-
- if (!DebugNonSafepoints_IS_CLEARED) {
- // decode the top frame fully
- // (usual case, if JVMTI is enabled)
- _frame = fr;
- } else {
- // skip top frame, as it may not be at safepoint
- // For AsyncGetCallTrace(), we extracted as much info from the top
- // frame as we could in forte_is_walkable_frame(). We also verified
- // forte_safe_for_sender() so this sender() call is safe.
- _frame = fr.sender(&_reg_map);
- }
-
- if (jt->thread_state() == _thread_in_Java && !fr.is_first_frame()) {
- bool sender_check = false; // assume sender is not safe
-
- if (forte_safe_for_sender(&_frame, jt)) {
- // If the initial sender frame is safe, then continue on with other
- // checks. The unsafe sender frame has been seen on Solaris X86
- // with both Compiler1 and Compiler2. It has not been seen on
- // Solaris SPARC, but seems like a good sanity check to have
- // anyway.
+ _frame = fr;
- // SIGPROF caught us in Java code and the current frame is not the
- // first frame so we should sanity check the sender frame. It is
- // possible for SIGPROF to catch us in the middle of making a call.
- // When that happens the current frame is actually a combination of
- // the real sender and some of the new call's info. We can't find
- // the real sender with such a current frame and things can get
- // confused.
- //
- // This sanity check has caught problems with the sender frame on
- // Solaris SPARC. So far Solaris X86 has not had a failure here.
- sender_check = _frame.is_entry_frame()
- // testers that are a subset of is_entry_frame():
- // is_first_frame()
- || _frame.is_java_frame()
- // testers that are a subset of is_java_frame():
- // is_interpreted_frame()
- // is_compiled_frame()
- || _frame.is_native_frame()
- || _frame.is_runtime_frame()
- || _frame.is_safepoint_blob_frame()
- ;
-
- // We need an additional sanity check on an initial interpreted
- // sender frame. This interpreted frame needs to be both walkable
- // and have a valid BCI. This is yet another variant of SIGPROF
- // catching us in the middle of making a call.
- if (sender_check && _frame.is_interpreted_frame()) {
- methodOop method = NULL;
- int bci = -1;
-
- if (!forte_is_walkable_interpreted_frame(&_frame, &method, &bci)
- || bci == -1) {
- sender_check = false;
- }
- }
-
- // We need an additional sanity check on an initial compiled
- // sender frame. This compiled frame also needs to be walkable.
- // This is yet another variant of SIGPROF catching us in the
- // middle of making a call.
- if (sender_check && !_frame.is_interpreted_frame()) {
- bool is_compiled, is_walkable;
+ // We must always have a valid frame to start filling
- forte_is_walkable_compiled_frame(&_frame, &_reg_map,
- &is_compiled, &is_walkable);
- if (is_compiled && !is_walkable) {
- sender_check = false;
- }
- }
- }
-
- if (!sender_check) {
- // nothing else to try if we can't recognize the sender
- _mode = at_end_mode;
- return;
- }
- }
-
- int loop_count = 0;
- int loop_max = MaxJavaStackTraceDepth * 2;
-
- while (!fill_from_frame()) {
- _frame = _frame.sender(&_reg_map);
+ bool filled_in = fill_from_frame();
-#ifdef COMPILER2
-#if defined(IA32) || defined(AMD64)
- // Stress testing on C2 X86 has shown a periodic problem with
- // the sender() call below. The initial _frame that we have on
- // entry to the loop has already passed forte_safe_for_sender()
- // so we only check frames after it.
- if (!forte_safe_for_sender(&_frame, _thread)) {
- _mode = at_end_mode;
- return;
- }
-#endif // IA32 || AMD64
-#endif // COMPILER2
+ assert(filled_in, "invariant");
- if (++loop_count >= loop_max) {
- // We have looped more than twice the number of possible
- // Java frames. This indicates that we are trying to walk
- // a stack that is in the middle of being constructed and
- // it is self referential.
- _mode = at_end_mode;
- return;
- }
- }
}
@@ -358,95 +104,57 @@
do {
-#if defined(COMPILER1) && defined(SPARC)
- bool prevIsInterpreted = _frame.is_interpreted_frame();
-#endif // COMPILER1 && SPARC
+ loop_count++;
- _frame = _frame.sender(&_reg_map);
+ // By the time we get here we should never see unsafe but better
+ // safe then segv'd
- if (!forte_safe_for_sender(&_frame, _thread)) {
+ if (loop_count > loop_max || !_frame.safe_for_sender(_thread)) {
_mode = at_end_mode;
return;
}
-#if defined(COMPILER1) && defined(SPARC)
- if (prevIsInterpreted) {
- // previous callee was interpreted and may require a special check
- if (_frame.is_compiled_frame() && _frame.cb()->is_compiled_by_c1()) {
- // compiled sender called interpreted callee so need one more check
- bool is_compiled, is_walkable;
+ _frame = _frame.sender(&_reg_map);
- // sanity check the compiled sender frame
- forte_is_walkable_compiled_frame(&_frame, &_reg_map,
- &is_compiled, &is_walkable);
- assert(is_compiled, "sanity check");
- if (!is_walkable) {
- // compiled sender frame is not walkable so bail out
- _mode = at_end_mode;
- return;
- }
- }
- }
-#endif // COMPILER1 && SPARC
-
- if (++loop_count >= loop_max) {
- // We have looped more than twice the number of possible
- // Java frames. This indicates that we are trying to walk
- // a stack that is in the middle of being constructed and
- // it is self referential.
- _mode = at_end_mode;
- return;
- }
} while (!fill_from_frame());
}
-// Determine if 'fr' is a walkable, compiled frame.
-// *is_compiled_p is set to true if the frame is compiled and if it
-// is, then *is_walkable_p is set to true if it is also walkable.
-static void forte_is_walkable_compiled_frame(frame* fr, RegisterMap* map,
- bool* is_compiled_p, bool* is_walkable_p) {
+// Determine if 'fr' is a decipherable compiled frame. We are already
+// assured that fr is for a java nmethod.
+
+static bool is_decipherable_compiled_frame(frame* fr) {
- *is_compiled_p = false;
- *is_walkable_p = false;
+ assert(fr->cb() != NULL && fr->cb()->is_nmethod(), "invariant");
+ nmethod* nm = (nmethod*) fr->cb();
+ assert(nm->is_java_method(), "invariant");
+
+ // First try and find an exact PcDesc
- CodeBlob* cb = CodeCache::find_blob(fr->pc());
- if (cb != NULL &&
- cb->is_nmethod() &&
- ((nmethod*)cb)->is_java_method()) {
- // frame is compiled and executing a Java method
- *is_compiled_p = true;
+ PcDesc* pc_desc = nm->pc_desc_at(fr->pc());
+
+ // Did we find a useful PcDesc?
+ if (pc_desc != NULL &&
+ pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
- // Increment PC because the PcDesc we want is associated with
- // the *end* of the instruction, and pc_desc_near searches
- // forward to the first matching PC after the probe PC.
- PcDesc* pc_desc = NULL;
- if (!DebugNonSafepoints_IS_CLEARED) {
- // usual case: look for any safepoint near the sampled PC
- address probe_pc = fr->pc() + 1;
- pc_desc = ((nmethod*) cb)->pc_desc_near(probe_pc);
- } else {
- // reduced functionality: only recognize PCs immediately after calls
- pc_desc = ((nmethod*) cb)->pc_desc_at(fr->pc());
- }
- if (pc_desc != NULL && (pc_desc->scope_decode_offset()
- == DebugInformationRecorder::serialized_null)) {
- pc_desc = NULL;
+ address probe_pc = fr->pc() + 1;
+ pc_desc = nm->pc_desc_near(probe_pc);
+
+ // Now do we have a useful PcDesc?
+
+ if (pc_desc != NULL &&
+ pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
+ // No debug information available for this pc
+ // vframeStream would explode if we try and walk the frames.
+ return false;
}
- if (pc_desc != NULL) {
- // it has a PcDesc so the frame is also walkable
- *is_walkable_p = true;
- if (!DebugNonSafepoints_IS_CLEARED) {
- // Normalize the PC to the one associated exactly with
- // this PcDesc, so that subsequent stack-walking queries
- // need not be approximate:
- fr->set_pc(pc_desc->real_pc((nmethod*) cb));
- }
- }
- // Implied else: this compiled frame has no PcDesc, i.e., contains
- // a frameless stub such as C1 method exit, so it is not walkable.
+
+ // This PcDesc is useful however we must adjust the frame's pc
+ // so that the vframeStream lookups will use this same pc
+
+ fr->set_pc(pc_desc->real_pc(nm));
}
- // Implied else: this isn't a compiled frame so it isn't a
- // walkable, compiled frame.
+
+ return true;
}
// Determine if 'fr' is a walkable interpreted frame. Returns false
@@ -457,159 +165,189 @@
// Note: this method returns true when a valid Java method is found
// even if a valid BCI cannot be found.
-static bool forte_is_walkable_interpreted_frame(frame* fr,
- methodOop* method_p, int* bci_p) {
+static bool is_decipherable_interpreted_frame(JavaThread* thread,
+ frame* fr,
+ methodOop* method_p,
+ int* bci_p) {
assert(fr->is_interpreted_frame(), "just checking");
// top frame is an interpreted frame
// check if it is walkable (i.e. valid methodOop and valid bci)
- if (fr->is_interpreted_frame_valid()) {
- if (fr->fp() != NULL) {
- // access address in order not to trigger asserts that
- // are built in interpreter_frame_method function
- methodOop method = *fr->interpreter_frame_method_addr();
- if (Universe::heap()->is_valid_method(method)) {
- intptr_t bcx = fr->interpreter_frame_bcx();
- int bci = method->validate_bci_from_bcx(bcx);
- // note: bci is set to -1 if not a valid bci
- *method_p = method;
- *bci_p = bci;
- return true;
- }
- }
+
+ // Because we may be racing a gc thread the method and/or bci
+ // of a valid interpreter frame may look bad causing us to
+ // fail the is_interpreted_frame_valid test. If the thread
+ // is in any of the following states we are assured that the
+ // frame is in fact valid and we must have hit the race.
+
+ JavaThreadState state = thread->thread_state();
+ bool known_valid = (state == _thread_in_native ||
+ state == _thread_in_vm ||
+ state == _thread_blocked );
+
+ if (known_valid || fr->is_interpreted_frame_valid(thread)) {
+
+ // The frame code should completely validate the frame so that
+ // references to methodOop and bci are completely safe to access
+ // If they aren't the frame code should be fixed not this
+ // code. However since gc isn't locked out the values could be
+ // stale. This is a race we can never completely win since we can't
+ // lock out gc so do one last check after retrieving their values
+ // from the frame for additional safety
+
+ methodOop method = fr->interpreter_frame_method();
+
+ // We've at least found a method.
+ // NOTE: there is something to be said for the approach that
+ // if we don't find a valid bci then the method is not likely
+ // a valid method. Then again we may have caught an interpreter
+ // frame in the middle of construction and the bci field is
+ // not yet valid.
+
+ *method_p = method;
+
+ // See if gc may have invalidated method since we validated frame
+
+ if (!Universe::heap()->is_valid_method(method)) return false;
+
+ intptr_t bcx = fr->interpreter_frame_bcx();
+
+ int bci = method->validate_bci_from_bcx(bcx);
+
+ // note: bci is set to -1 if not a valid bci
+ *bci_p = bci;
+ return true;
}
+
return false;
}
-// Determine if 'fr' can be used to find a walkable frame. Returns
-// false if a walkable frame cannot be found. *walkframe_p, *method_p,
-// and *bci_p are not set when false is returned. Returns true if a
-// walkable frame is returned via *walkframe_p. *method_p is non-NULL
-// if the returned frame was executing a Java method. *bci_p is != -1
-// if a valid BCI in the Java method could be found.
+// Determine if 'fr' can be used to find an initial Java frame.
+// Return false if it can not find a fully decipherable Java frame
+// (in other words a frame that isn't safe to use in a vframe stream).
+// Obviously if it can't even find a Java frame false will also be returned.
+//
+// If we find a Java frame decipherable or not then by definition we have
+// identified a method and that will be returned to the caller via method_p.
+// If we can determine a bci that is returned also. (Hmm is it possible
+// to return a method and bci and still return false? )
+//
+// The initial Java frame we find (if any) is return via initial_frame_p.
//
-// *walkframe_p will be used by vframeStreamForte as the initial
-// frame for walking the stack. Currently the initial frame is
-// skipped by vframeStreamForte because we inherited the logic from
-// the vframeStream class. This needs to be revisited in the future.
-static bool forte_is_walkable_frame(JavaThread* thread, frame* fr,
- frame* walkframe_p, methodOop* method_p, int* bci_p) {
+
+static bool find_initial_Java_frame(JavaThread* thread,
+ frame* fr,
+ frame* initial_frame_p,
+ methodOop* method_p,
+ int* bci_p) {
+
+ // It is possible that for a frame containing an nmethod
+ // we can capture the method but no bci. If we get no
+ // bci the frame isn't walkable but the method is usable.
+ // Therefore we init the returned methodOop to NULL so the
+ // caller can make the distinction.
+
+ *method_p = NULL;
+
+ // On the initial call to this method the frame we get may not be
+ // recognizable to us. This should only happen if we are in a JRT_LEAF
+ // or something called by a JRT_LEAF method.
+
- if (!forte_safe_for_sender(fr, thread)
- || is_unknown_compiled_frame(fr, thread)
- ) {
- // If the initial frame is not safe, then bail out. So far this
- // has only been seen on Solaris X86 with Compiler2, but it seems
- // like a great initial sanity check.
- return false;
+
+ frame candidate = *fr;
+
+ // If the starting frame we were given has no codeBlob associated with
+ // it see if we can find such a frame because only frames with codeBlobs
+ // are possible Java frames.
+
+ if (fr->cb() == NULL) {
+
+ // See if we can find a useful frame
+ int loop_count;
+ int loop_max = MaxJavaStackTraceDepth * 2;
+ RegisterMap map(thread, false);
+
+ for (loop_count = 0; loop_count < loop_max; loop_count++) {
+ if (!candidate.safe_for_sender(thread)) return false;
+ candidate = candidate.sender(&map);
+ if (candidate.cb() != NULL) break;
+ }
+ if (candidate.cb() == NULL) return false;
}
- if (fr->is_first_frame()) {
- // If initial frame is frame from StubGenerator and there is no
- // previous anchor, there are no java frames yet
- return false;
- }
-
- if (fr->is_interpreted_frame()) {
- if (forte_is_walkable_interpreted_frame(fr, method_p, bci_p)) {
- *walkframe_p = *fr;
- return true;
- }
- return false;
- }
-
- // At this point we have something other than a first frame or an
- // interpreted frame.
-
- methodOop method = NULL;
- frame candidate = *fr;
-
- // If we loop more than twice the number of possible Java
- // frames, then this indicates that we are trying to walk
- // a stack that is in the middle of being constructed and
- // it is self referential. So far this problem has only
- // been seen on Solaris X86 Compiler2, but it seems like
- // a good robustness fix for all platforms.
-
+ // We have a frame known to be in the codeCache
+ // We will hopefully be able to figure out something to do with it.
int loop_count;
int loop_max = MaxJavaStackTraceDepth * 2;
+ RegisterMap map(thread, false);
for (loop_count = 0; loop_count < loop_max; loop_count++) {
- // determine if the candidate frame is executing a Java method
- if (CodeCache::contains(candidate.pc())) {
- // candidate is a compiled frame or stub routine
- CodeBlob* cb = CodeCache::find_blob(candidate.pc());
- if (cb->is_nmethod()) {
- method = ((nmethod *)cb)->method();
- }
- } // end if CodeCache has our PC
-
- RegisterMap map(thread, false);
+ if (candidate.is_first_frame()) {
+ // If initial frame is frame from StubGenerator and there is no
+ // previous anchor, there are no java frames associated with a method
+ return false;
+ }
- // we have a Java frame that seems reasonable
- if (method != NULL && candidate.is_java_frame()
- && candidate.sp() != NULL && candidate.pc() != NULL) {
- // we need to sanity check the candidate further
- bool is_compiled, is_walkable;
+ if (candidate.is_interpreted_frame()) {
+ if (is_decipherable_interpreted_frame(thread, &candidate, method_p, bci_p)) {
+ *initial_frame_p = candidate;
+ return true;
+ }
- forte_is_walkable_compiled_frame(&candidate, &map, &is_compiled,
- &is_walkable);
- if (is_compiled) {
- // At this point, we know we have a compiled Java frame with
- // method information that we want to return. We don't check
- // the is_walkable flag here because that flag pertains to
- // vframeStreamForte work that is done after we are done here.
- break;
- }
+ // Hopefully we got some data
+ return false;
}
- // At this point, the candidate doesn't work so try the sender.
+ if (candidate.cb()->is_nmethod()) {
+
+ nmethod* nm = (nmethod*) candidate.cb();
+ *method_p = nm->method();
- // For AsyncGetCallTrace() we cannot assume there is a sender
- // for the initial frame. The initial forte_safe_for_sender() call
- // and check for is_first_frame() is done on entry to this method.
- candidate = candidate.sender(&map);
- if (!forte_safe_for_sender(&candidate, thread)) {
+ // If the frame isn't fully decipherable then the default
+ // value for the bci is a signal that we don't have a bci.
+ // If we have a decipherable frame this bci value will
+ // not be used.
+
+ *bci_p = -1;
-#ifdef COMPILER2
-#if defined(IA32) || defined(AMD64)
- // C2 on X86 can use the ebp register as a general purpose register
- // which can cause the candidate to fail theforte_safe_for_sender()
- // above. We try one more time using a NULL frame pointer (fp).
+ *initial_frame_p = candidate;
+
+ // Native wrapper code is trivial to decode by vframeStream
+
+ if (nm->is_native_method()) return true;
- candidate = frame(candidate.sp(), NULL, candidate.pc());
- if (!forte_safe_for_sender(&candidate, thread)) {
-#endif // IA32 || AMD64
-#endif // COMPILER2
+ // If it isn't decipherable then we have found a pc that doesn't
+ // have a PCDesc that can get us a bci however we did find
+ // a method
+ if (!is_decipherable_compiled_frame(&candidate)) {
return false;
+ }
-#ifdef COMPILER2
-#if defined(IA32) || defined(AMD64)
- } // end forte_safe_for_sender retry with NULL fp
-#endif // IA32 || AMD64
-#endif // COMPILER2
+ // is_decipherable_compiled_frame may modify candidate's pc
+ *initial_frame_p = candidate;
- } // end first forte_safe_for_sender check
+ return true;
+ }
+
+ // Must be some stub frame that we don't care about
- if (candidate.is_first_frame()
- || is_unknown_compiled_frame(&candidate, thread)) {
- return false;
- }
- } // end for loop_count
+ if (!candidate.safe_for_sender(thread)) return false;
+ candidate = candidate.sender(&map);
- if (method == NULL) {
- // If we didn't get any method info from the candidate, then
- // we have nothing to return so bail out.
- return false;
+ // If it isn't in the code cache something is wrong
+ // since once we find a frame in the code cache they
+ // all should be there.
+
+ if (candidate.cb() == NULL) return false;
+
}
- *walkframe_p = candidate;
- *method_p = method;
- *bci_p = -1;
- return true;
+ return false;
+
}
@@ -627,10 +365,12 @@
} ASGCT_CallTrace;
static void forte_fill_call_trace_given_top(JavaThread* thd,
- ASGCT_CallTrace* trace, int depth, frame top_frame) {
+ ASGCT_CallTrace* trace,
+ int depth,
+ frame top_frame) {
NoHandleMark nhm;
- frame walkframe;
+ frame initial_Java_frame;
methodOop method;
int bci;
int count;
@@ -638,48 +378,51 @@
count = 0;
assert(trace->frames != NULL, "trace->frames must be non-NULL");
- if (!forte_is_walkable_frame(thd, &top_frame, &walkframe, &method, &bci)) {
- // return if no walkable frame is found
- return;
- }
+ bool fully_decipherable = find_initial_Java_frame(thd, &top_frame, &initial_Java_frame, &method, &bci);
+
+ // The frame might not be walkable but still recovered a method
+ // (e.g. an nmethod with no scope info for the pc
+
+ if (method == NULL) return;
CollectedHeap* ch = Universe::heap();
- if (method != NULL) {
- // The method is not stored GC safe so see if GC became active
- // after we entered AsyncGetCallTrace() and before we try to
- // use the methodOop.
- // Yes, there is still a window after this check and before
- // we use methodOop below, but we can't lock out GC so that
- // has to be an acceptable risk.
- if (!ch->is_valid_method(method)) {
- trace->num_frames = -2;
- return;
- }
-
- if (DebugNonSafepoints_IS_CLEARED) {
- // Take whatever method the top-frame decoder managed to scrape up.
- // We look further at the top frame only if non-safepoint
- // debugging information is available.
- count++;
- trace->num_frames = count;
- trace->frames[0].method_id = method->find_jmethod_id_or_null();
- if (!method->is_native()) {
- trace->frames[0].lineno = bci;
- } else {
- trace->frames[0].lineno = -3;
- }
- }
- }
-
- // check has_last_Java_frame() after looking at the top frame
- // which may be an interpreted Java frame.
- if (!thd->has_last_Java_frame() && method == NULL) {
- trace->num_frames = 0;
+ // The method is not stored GC safe so see if GC became active
+ // after we entered AsyncGetCallTrace() and before we try to
+ // use the methodOop.
+ // Yes, there is still a window after this check and before
+ // we use methodOop below, but we can't lock out GC so that
+ // has to be an acceptable risk.
+ if (!ch->is_valid_method(method)) {
+ trace->num_frames = ticks_GC_active; // -2
return;
}
- vframeStreamForte st(thd, walkframe, false);
+ // We got a Java frame however it isn't fully decipherable
+ // so it won't necessarily be safe to use it for the
+ // initial frame in the vframe stream.
+
+ if (!fully_decipherable) {
+ // Take whatever method the top-frame decoder managed to scrape up.
+ // We look further at the top frame only if non-safepoint
+ // debugging information is available.
+ count++;
+ trace->num_frames = count;
+ trace->frames[0].method_id = method->find_jmethod_id_or_null();
+ if (!method->is_native()) {
+ trace->frames[0].lineno = bci;
+ } else {
+ trace->frames[0].lineno = -3;
+ }
+
+ if (!initial_Java_frame.safe_for_sender(thd)) return;
+
+ RegisterMap map(thd, false);
+ initial_Java_frame = initial_Java_frame.sender(&map);
+ }
+
+ vframeStreamForte st(thd, initial_Java_frame, false);
+
for (; !st.at_end() && count < depth; st.forte_next(), count++) {
bci = st.bci();
method = st.method();
@@ -693,7 +436,7 @@
if (!ch->is_valid_method(method)) {
// we throw away everything we've gathered in this sample since
// none of it is safe
- trace->num_frames = -2;
+ trace->num_frames = ticks_GC_active; // -2
return;
}
@@ -765,6 +508,11 @@
extern "C" {
void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) {
+
+// This is if'd out because we no longer use thread suspension.
+// However if someone wanted to backport this to a 5.0 jvm then this
+// code would be important.
+#if 0
if (SafepointSynchronize::is_synchronizing()) {
// The safepoint mechanism is trying to synchronize all the threads.
// Since this can involve thread suspension, it is not safe for us
@@ -774,9 +522,10 @@
// are suspended while holding a resource and another thread blocks
// on that resource in the SIGPROF handler, then we will have a
// three-thread deadlock (VMThread, this thread, the other thread).
- trace->num_frames = -10;
+ trace->num_frames = ticks_safepoint; // -10
return;
}
+#endif
JavaThread* thread;
@@ -785,13 +534,13 @@
thread->is_exiting()) {
// bad env_id, thread has exited or thread is exiting
- trace->num_frames = -8;
+ trace->num_frames = ticks_thread_exit; // -8
return;
}
if (thread->in_deopt_handler()) {
// thread is in the deoptimization handler so return no frames
- trace->num_frames = -9;
+ trace->num_frames = ticks_deopt; // -9
return;
}
@@ -799,12 +548,12 @@
"AsyncGetCallTrace must be called by the current interrupted thread");
if (!JvmtiExport::should_post_class_load()) {
- trace->num_frames = -1;
+ trace->num_frames = ticks_no_class_load; // -1
return;
}
if (Universe::heap()->is_gc_active()) {
- trace->num_frames = -2;
+ trace->num_frames = ticks_GC_active; // -2
return;
}
@@ -827,14 +576,22 @@
// param isInJava == false - indicate we aren't in Java code
if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, false)) {
+ trace->num_frames = ticks_unknown_not_Java; // -3 unknown frame
+ } else {
if (!thread->has_last_Java_frame()) {
- trace->num_frames = 0; // no Java frames
+ trace->num_frames = 0; // No Java frames
} else {
- trace->num_frames = -3; // unknown frame
+ trace->num_frames = ticks_not_walkable_not_Java; // -4 non walkable frame by default
+ forte_fill_call_trace_given_top(thread, trace, depth, fr);
+
+ // This assert would seem to be valid but it is not.
+ // It would be valid if we weren't possibly racing a gc
+ // thread. A gc thread can make a valid interpreted frame
+ // look invalid. It's a small window but it does happen.
+ // The assert is left here commented out as a reminder.
+ // assert(trace->num_frames != ticks_not_walkable_not_Java, "should always be walkable");
+
}
- } else {
- trace->num_frames = -4; // non walkable frame by default
- forte_fill_call_trace_given_top(thread, trace, depth, fr);
}
}
break;
@@ -845,16 +602,16 @@
// param isInJava == true - indicate we are in Java code
if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, true)) {
- trace->num_frames = -5; // unknown frame
+ trace->num_frames = ticks_unknown_Java; // -5 unknown frame
} else {
- trace->num_frames = -6; // non walkable frame by default
+ trace->num_frames = ticks_not_walkable_Java; // -6, non walkable frame by default
forte_fill_call_trace_given_top(thread, trace, depth, fr);
}
}
break;
default:
// Unknown thread state
- trace->num_frames = -7;
+ trace->num_frames = ticks_unknown_state; // -7
break;
}
}
--- a/hotspot/src/share/vm/runtime/fprofiler.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/fprofiler.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -924,29 +924,23 @@
FlatProfiler::record_thread_ticks();
}
-void ThreadProfiler::record_interpreted_tick(frame fr, TickPosition where, int* ticks) {
+void ThreadProfiler::record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks) {
FlatProfiler::all_int_ticks++;
if (!FlatProfiler::full_profile()) {
return;
}
- if (!fr.is_interpreted_frame_valid()) {
+ if (!fr.is_interpreted_frame_valid(thread)) {
// tick came at a bad time
interpreter_ticks += 1;
FlatProfiler::interpreter_ticks += 1;
return;
}
- methodOop method = NULL;
- if (fr.fp() != NULL) {
- method = *fr.interpreter_frame_method_addr();
- }
- if (!Universe::heap()->is_valid_method(method)) {
- // tick came at a bad time, stack frame not initialized correctly
- interpreter_ticks += 1;
- FlatProfiler::interpreter_ticks += 1;
- return;
- }
+ // The frame has been fully validated so we can trust the method and bci
+
+ methodOop method = *fr.interpreter_frame_method_addr();
+
interpreted_update(method, where);
// update byte code table
@@ -997,7 +991,7 @@
// The tick happend in real code -> non VM code
if (fr.is_interpreted_frame()) {
interval_data_ref()->inc_interpreted();
- record_interpreted_tick(fr, tp_code, FlatProfiler::bytecode_ticks);
+ record_interpreted_tick(thread, fr, tp_code, FlatProfiler::bytecode_ticks);
return;
}
@@ -1028,7 +1022,7 @@
// The tick happend in VM code
interval_data_ref()->inc_native();
if (fr.is_interpreted_frame()) {
- record_interpreted_tick(fr, tp_native, FlatProfiler::bytecode_ticks_stub);
+ record_interpreted_tick(thread, fr, tp_native, FlatProfiler::bytecode_ticks_stub);
return;
}
if (CodeCache::contains(fr.pc())) {
--- a/hotspot/src/share/vm/runtime/fprofiler.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/fprofiler.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -135,7 +135,7 @@
ProfilerNode** table;
private:
- void record_interpreted_tick(frame fr, TickPosition where, int* ticks);
+ void record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks);
void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where);
void interpreted_update(methodOop method, TickPosition where);
void compiled_update (methodOop method, TickPosition where);
--- a/hotspot/src/share/vm/runtime/frame.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/frame.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -108,7 +108,7 @@
bool is_first_frame() const; // oldest frame? (has no sender)
bool is_first_java_frame() const; // same for Java frame
- bool is_interpreted_frame_valid() const; // performs sanity checks on interpreted frames.
+ bool is_interpreted_frame_valid(JavaThread* thread) const; // performs sanity checks on interpreted frames.
// tells whether this frame is marked for deoptimization
bool should_be_deoptimized() const;
--- a/hotspot/src/share/vm/runtime/globals.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/globals.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -68,18 +68,20 @@
if (is_uintx()) st->print("%-16lu", get_uintx());
if (is_ccstr()) {
const char* cp = get_ccstr();
- const char* eol;
- while ((eol = strchr(cp, '\n')) != NULL) {
- char format_buffer[FORMAT_BUFFER_LEN];
- size_t llen = pointer_delta(eol, cp, sizeof(char));
- jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
- "%%." SIZE_FORMAT "s", llen);
- st->print(format_buffer, cp);
- st->cr();
- cp = eol+1;
- st->print("%5s %-35s += ", "", name);
+ if (cp != NULL) {
+ const char* eol;
+ while ((eol = strchr(cp, '\n')) != NULL) {
+ char format_buffer[FORMAT_BUFFER_LEN];
+ size_t llen = pointer_delta(eol, cp, sizeof(char));
+ jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
+ "%%." SIZE_FORMAT "s", llen);
+ st->print(format_buffer, cp);
+ st->cr();
+ cp = eol+1;
+ st->print("%5s %-35s += ", "", name);
+ }
+ st->print("%-16s", cp);
}
- st->print("%-16s", cp);
}
st->print(" %s", kind);
st->cr();
@@ -94,18 +96,21 @@
st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
} else if (is_ccstr()) {
st->print("-XX:%s=", name);
- // Need to turn embedded '\n's back into separate arguments
- // Not so efficient to print one character at a time,
- // but the choice is to do the transformation to a buffer
- // and print that. And this need not be efficient.
- for (const char* cp = get_ccstr(); *cp != '\0'; cp += 1) {
- switch (*cp) {
- default:
- st->print("%c", *cp);
- break;
- case '\n':
- st->print(" -XX:%s=", name);
- break;
+ const char* cp = get_ccstr();
+ if (cp != NULL) {
+ // Need to turn embedded '\n's back into separate arguments
+ // Not so efficient to print one character at a time,
+ // but the choice is to do the transformation to a buffer
+ // and print that. And this need not be efficient.
+ for (; *cp != '\0'; cp += 1) {
+ switch (*cp) {
+ default:
+ st->print("%c", *cp);
+ break;
+ case '\n':
+ st->print(" -XX:%s=", name);
+ break;
+ }
}
}
} else {
--- a/hotspot/src/share/vm/runtime/globals.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/globals.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -668,16 +668,19 @@
notproduct(bool, PrintCompilation2, false, \
"Print additional statistics per compilation") \
\
- notproduct(bool, PrintAdapterHandlers, false, \
+ diagnostic(bool, PrintAdapterHandlers, false, \
"Print code generated for i2c/c2i adapters") \
\
- develop(bool, PrintAssembly, false, \
- "Print assembly code") \
- \
- develop(bool, PrintNMethods, false, \
+ diagnostic(bool, PrintAssembly, false, \
+ "Print assembly code (using external disassembler.so)") \
+ \
+ diagnostic(ccstr, PrintAssemblyOptions, false, \
+ "Options string passed to disassembler.so") \
+ \
+ diagnostic(bool, PrintNMethods, false, \
"Print assembly code for nmethods when generated") \
\
- develop(bool, PrintNativeNMethods, false, \
+ diagnostic(bool, PrintNativeNMethods, false, \
"Print assembly code for native nmethods when generated") \
\
develop(bool, PrintDebugInfo, false, \
@@ -702,7 +705,7 @@
develop(bool, PrintCodeCache2, false, \
"Print detailed info on the compiled_code cache when exiting") \
\
- develop(bool, PrintStubCode, false, \
+ diagnostic(bool, PrintStubCode, false, \
"Print generated stub code") \
\
product(bool, StackTraceInThrowable, true, \
@@ -1319,6 +1322,10 @@
product(bool, CMSClassUnloadingEnabled, false, \
"Whether class unloading enabled when using CMS GC") \
\
+ product(uintx, CMSClassUnloadingMaxInterval, 0, \
+ "When CMS class unloading is enabled, the maximum CMS cycle count"\
+ " for which classes may not be unloaded") \
+ \
product(bool, CMSCompactWhenClearAllSoftRefs, true, \
"Compact when asked to collect CMS gen with clear_all_soft_refs") \
\
@@ -1504,17 +1511,30 @@
"Percentage of MinHeapFreeRatio in CMS generation that is " \
" allocated before a CMS collection cycle commences") \
\
- product(intx, CMSBootstrapOccupancy, 50, \
+ product(intx, CMSTriggerPermRatio, 80, \
+ "Percentage of MinHeapFreeRatio in the CMS perm generation that" \
+ " is allocated before a CMS collection cycle commences, that " \
+ " also collects the perm generation") \
+ \
+ product(uintx, CMSBootstrapOccupancy, 50, \
"Percentage CMS generation occupancy at which to " \
" initiate CMS collection for bootstrapping collection stats") \
\
product(intx, CMSInitiatingOccupancyFraction, -1, \
"Percentage CMS generation occupancy to start a CMS collection " \
- " cycle (A negative value means that CMSTirggerRatio is used)") \
+ " cycle (A negative value means that CMSTriggerRatio is used)") \
+ \
+ product(intx, CMSInitiatingPermOccupancyFraction, -1, \
+ "Percentage CMS perm generation occupancy to start a CMScollection"\
+ " cycle (A negative value means that CMSTriggerPermRatio is used)")\
\
product(bool, UseCMSInitiatingOccupancyOnly, false, \
"Only use occupancy as a crierion for starting a CMS collection") \
\
+ product(intx, CMSIsTooFullPercentage, 98, \
+ "An absolute ceiling above which CMS will always consider the" \
+ " perm gen ripe for collection") \
+ \
develop(bool, CMSTestInFreeList, false, \
"Check if the coalesced range is already in the " \
"free lists as claimed.") \
@@ -2250,7 +2270,7 @@
product_pd(bool, RewriteFrequentPairs, \
"Rewrite frequently used bytecode pairs into a single bytecode") \
\
- product(bool, PrintInterpreter, false, \
+ diagnostic(bool, PrintInterpreter, false, \
"Prints the generated interpreter code") \
\
product(bool, UseInterpreter, true, \
@@ -2300,7 +2320,7 @@
develop(bool, PrintBytecodePairHistogram, false, \
"Print histogram of the executed bytecode pairs") \
\
- develop(bool, PrintSignatureHandlers, false, \
+ diagnostic(bool, PrintSignatureHandlers, false, \
"Print code generated for native method signature handlers") \
\
develop(bool, VerifyOops, false, \
--- a/hotspot/src/share/vm/runtime/stubCodeGenerator.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/stubCodeGenerator.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -69,7 +69,6 @@
_first_stub = _last_stub = NULL;
}
-#ifndef PRODUCT
extern "C" {
static int compare_cdesc(const void* void_a, const void* void_b) {
int ai = (*((StubCodeDesc**) void_a))->index();
@@ -77,10 +76,8 @@
return ai - bi;
}
}
-#endif
StubCodeGenerator::~StubCodeGenerator() {
-#ifndef PRODUCT
if (PrintStubCode) {
CodeBuffer* cbuf = _masm->code();
CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
@@ -105,7 +102,6 @@
tty->cr();
}
}
-#endif //PRODUCT
}
--- a/hotspot/src/share/vm/runtime/vframe.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/runtime/vframe.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -416,6 +416,48 @@
int decode_offset;
if (pc_desc == NULL) {
// Should not happen, but let fill_from_compiled_frame handle it.
+
+ // If we are trying to walk the stack of a thread that is not
+ // at a safepoint (like AsyncGetCallTrace would do) then this is an
+ // acceptable result. [ This is assuming that safe_for_sender
+ // is so bullet proof that we can trust the frames it produced. ]
+ //
+ // So if we see that the thread is not safepoint safe
+ // then simply produce the method and a bci of zero
+ // and skip the possibility of decoding any inlining that
+ // may be present. That is far better than simply stopping (or
+ // asserting. If however the thread is safepoint safe this
+ // is the sign of a compiler bug and we'll let
+ // fill_from_compiled_frame handle it.
+
+
+ JavaThreadState state = _thread->thread_state();
+
+ // in_Java should be good enough to test safepoint safety
+ // if state were say in_Java_trans then we'd expect that
+ // the pc would have already been slightly adjusted to
+ // one that would produce a pcDesc since the trans state
+ // would be one that might in fact anticipate a safepoint
+
+ if (state == _thread_in_Java ) {
+ // This will get a method a zero bci and no inlining.
+ // Might be nice to have a unique bci to signify this
+ // particular case but for now zero will do.
+
+ fill_from_compiled_native_frame();
+
+ // There is something to be said for setting the mode to
+ // at_end_mode to prevent trying to walk further up the
+ // stack. There is evidence that if we walk any further
+ // that we could produce a bad stack chain. However until
+ // we see evidence that allowing this causes us to find
+ // frames bad enough to cause segv's or assertion failures
+ // we don't do it as while we may get a bad call chain the
+ // probability is much higher (several magnitudes) that we
+ // get good data.
+
+ return true;
+ }
decode_offset = DebugInformationRecorder::serialized_null;
} else {
decode_offset = pc_desc->scope_decode_offset();
--- a/hotspot/src/share/vm/utilities/ostream.cpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/utilities/ostream.cpp Fri Apr 11 09:56:35 2008 -0400
@@ -52,8 +52,9 @@
_precount += _position + 1;
_position = 0;
} else if (ch == '\t') {
- _position += 8;
- _precount -= 7; // invariant: _precount + _position == total count
+ int tw = 8 - (_position & 7);
+ _position += tw;
+ _precount -= tw-1; // invariant: _precount + _position == total count
} else {
_position += 1;
}
@@ -133,7 +134,17 @@
}
void outputStream::fill_to(int col) {
- while (position() < col) sp();
+ int need_fill = col - position();
+ sp(need_fill);
+}
+
+void outputStream::move_to(int col, int slop, int min_space) {
+ if (position() >= col + slop)
+ cr();
+ int need_fill = col - position();
+ if (need_fill < min_space)
+ need_fill = min_space;
+ sp(need_fill);
}
void outputStream::put(char ch) {
@@ -142,8 +153,23 @@
write(buf, 1);
}
-void outputStream::sp() {
- this->write(" ", 1);
+#define SP_USE_TABS false
+
+void outputStream::sp(int count) {
+ if (count < 0) return;
+ if (SP_USE_TABS && count >= 8) {
+ int target = position() + count;
+ while (count >= 8) {
+ this->write("\t", 1);
+ count -= 8;
+ }
+ count = target - position();
+ }
+ while (count > 0) {
+ int nw = (count > 8) ? 8 : count;
+ this->write(" ", nw);
+ count -= nw;
+ }
}
void outputStream::cr() {
--- a/hotspot/src/share/vm/utilities/ostream.hpp Thu Apr 10 15:49:16 2008 -0400
+++ b/hotspot/src/share/vm/utilities/ostream.hpp Fri Apr 11 09:56:35 2008 -0400
@@ -59,6 +59,7 @@
int indentation() const { return _indentation; }
void set_indentation(int i) { _indentation = i; }
void fill_to(int col);
+ void move_to(int col, int slop = 6, int min_space = 2);
// sizing
int width() const { return _width; }
@@ -78,7 +79,7 @@
void print_raw_cr(const char* str) { write(str, strlen(str)); cr(); }
void print_raw_cr(const char* str, int len){ write(str, len); cr(); }
void put(char ch);
- void sp();
+ void sp(int count = 1);
void cr();
void bol() { if (_position > 0) cr(); }
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/6646020/Tester.java Fri Apr 11 09:56:35 2008 -0400
@@ -0,0 +1,886 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6646020
+ * @summary assert(in_bb(n),"must be in block") in -Xcomp mode
+ */
+
+/* Complexity upper bound: 3361 ops */
+
+class Tester_Class_0 {
+ static byte var_1;
+
+
+ public Tester_Class_0()
+ {
+ "".length();
+ {
+ var_1 = (var_1 = (new byte[(byte)'D'])[(byte)2.40457E38F]);
+ var_1 = (var_1 = (byte)1.738443503665377E307);
+ var_1 = (var_1 = (byte)1237144669662298112L);
+ }
+ var_1 = "baldh".equalsIgnoreCase("") ? (var_1 = (byte)7.2932087E37F) : (byte)3909726578709910528L;
+ var_1 = (var_1 = (var_1 = (var_1 = (byte)7.223761846153971E307)));
+ var_1 = (var_1 = (var_1 = (var_1 = (var_1 = (byte)((short)7860452029249754112L + (byte)1.7374232546809952E308)))));
+ var_1 = (!true ? (var_1 = (byte)4359229782598970368L) : (short)(byte)1.7509836746850026E308) >= 'P' ? (var_1 = (byte)3.275114793095594E307) : (byte)(- ((byte)1.5595572E38F) / 8.2971296E37F);
+ byte var_9 = (true ? true : (false ? true : false)) ? (var_1 = (var_1 = (byte)9.928434E37F)) : (var_1 = (byte)9.785060633966518E307);
+ final byte var_10 = 53;
+ var_9 <<= (true | true) & (((var_10 == "".substring(2001075014).compareToIgnoreCase("rhbytggv") ? !true : ! !true) ? !false : false) ? !true & true : !false) ? var_10 : var_10;
+ var_9 <<= - (var_9 -= - ~6397182310329038848L >> (char)955837891 << (short)- - -8.4452034E37F >> + ~5485157895941338112L);
+ --var_9;
+ var_9 >>= 'V';
+ var_9 -= (new char[var_10])[var_9];
+ double var_11;
+ var_11 = (var_11 = (new int[var_9 = (var_9 %= 684423748)])[var_9]);
+ var_9 /= 'q';
+ var_9 *= ~var_9 | (short)1.7667766368850557E308 - "w".trim().charAt(- (var_9 /= + (var_11 = 'q')));
+ if (var_10 <= 605036859609030656L | !false & false)
+ {
+ var_9 >>>= false ^ false ? (new short[var_10])[var_10] : (short)1013619326108001280L;
+ }
+ else
+ {
+ var_11 = var_9;
+ }
+ var_9 -= 'X';
+ var_9 *= 'E';
+ {
+ var_9 ^= (new short[var_9])[var_9 >>>= 'c'];
+ }
+ var_11 = 4315867074042433536L;
+ double var_12 = 1.2183900219527627E308;
+ var_9 <<= (false ? !false : false) ? '\\' : 'D';
+ }
+
+
+
+
+ private final long func_0()
+ {
+ float var_2 = 0F;
+ var_1 = (var_1 = (var_1 = (byte)((short)1.4106931056021857E308 % var_2)));
+ for (new String(); true & (! !true ^ !false | false) && var_2 < 1; var_1 = (var_1 = (var_1 = (var_1 = (byte)1183673628639185920L))))
+ {
+ var_1 = true | false ? (var_1 = (byte)1.6263855E37F) : (byte)'O';
+ var_2++;
+ "fui".toUpperCase();
+ final int var_3 = (var_1 = (var_1 = (byte)'i')) + (byte)2008561384 / (byte)1.4413369179905006E308;
+ }
+ var_1 = (var_1 = false ^ false ? (byte)2.3850814E38F : (byte)4.42887E37F);
+ final float var_4 = 3.052265E38F;
+ var_1 = (var_1 = (var_1 = (var_1 = (var_1 = (byte)'o'))));
+ long var_5;
+ var_1 = (var_1 = (byte)((var_1 = (byte)1913212786) * (var_1 = (byte)var_2)));
+ var_5 = (short)3.2024069E38F * (short)(var_5 = 'Q');
+ var_5 = (false ? true : false) ? (short)1098137179 : (byte)~695765814858203136L;
+ var_1 = (var_1 = true & false ^ true ? (byte)1662737306 : (byte)'r');
+ {
+ (true ? "a" : "lymivj".toString()).codePointCount((short)3.032349E38F + (var_1 = (var_1 = (var_1 = (var_1 = (byte)1.3159799E37F)))), (byte)2.0898819853138264E307 & (new short[(byte)(short)var_2])[var_1 = (byte)(short)4.859332921376913E307]);
+ }
+ double var_6;
+ var_6 = 1359078277;
+ final float var_7 = 3.5952457E37F;
+ var_5 = ('u' | 9005660398910009344L) << 'j';
+ int var_8;
+ var_5 = (!false || true & !false) && false ? (byte)1836342254 : (byte)1.4836203E38F;
+ var_1 = (var_1 = (var_1 = (var_1 = (byte)1.5824984701060493E308)));
+ var_1 = (var_1 = (var_1 = (byte)~ (var_1 = (var_1 = (var_1 = (byte)var_7)))));
+ return +9.067416E37F <= (true | true ^ false ? (var_1 = (byte)(short)1.5243446E38F) : (var_1 = (byte)1.6893049E37F)) ? (byte)~4408841475280588800L - (var_5 = (var_1 = (byte)2.1542209E38F)) : (var_8 = (short)var_4);
+ }
+
+ protected final static double func_1(final char arg_0, final long arg_1)
+ {
+ var_1 = (short)8779631802405542912L << 'x' <= arg_0 ? (byte)+9.96859509852443E307 : (var_1 = (var_1 = (byte)(short)5.218454879223281E307));
+ return 5.57437404144192E307;
+ }
+
+ double func_2(byte arg_0, final boolean arg_1, Object arg_2)
+ {
+ arg_2 = arg_1 != arg_1 ? "wq" : "w";
+ arg_2 = arg_2;
+ if (arg_1)
+ {
+ arg_2 = false & arg_1 ? "hasmp" : (arg_2 = arg_2);
+ }
+ else
+ {
+ arg_2 = "lcquv";
+ }
+ arg_0 -= arg_1 ^ false ? (arg_0 |= (short)arg_0) : (~3462197988186869760L | 7274210797196514304L) % - - + +130998764279904256L;
+ arg_0 &= (true ? - - ~7861994999369861120L << 'l' : 'c') * 1246069704;
+ return (arg_1 ? 9.311174E37F : 1.7085558737202237E308) * 1168887722;
+ }
+
+ public String toString()
+ {
+ String result = "[\n";
+ result += "Tester_Class_0.var_1 = "; result += Tester.Printer.print(var_1);
+ result += "";
+ result += "\n]";
+ return result;
+ }
+}
+
+
+final class Tester_Class_1 extends Tester_Class_0 {
+ static Object var_13;
+ final static boolean var_14 = false | (false ? false : true);
+ Object var_15;
+ static byte var_16;
+ final long var_17 = (long)(-9.40561658911133E307 - (short)2.2016736E38F) ^ (char)1099667310;
+ static boolean var_18;
+ static float var_19;
+ final static byte var_20 = 123;
+ static byte var_21 = var_1 = (var_1 = var_20);
+ final static float var_22 = 1.5415572E38F;
+
+
+ public Tester_Class_1()
+ {
+ char[][] var_39;
+ boolean var_40 = false | !var_14;
+ if (var_14)
+ {
+ final String[] var_41 = (new String[var_21][var_20])[var_21 *= var_21];
+ var_15 = (new Tester_Class_0[var_20])[var_20];
+ --var_21;
+ int var_42;
+ }
+ else
+ {
+ var_19 = (short)325110146;
+ }
+ var_40 &= true;
+ var_13 = (((new Tester_Class_1[var_21 |= (new char[var_20])[var_21]])[var_21]).var_15 = (new String[var_21][var_20][var_20])[var_21 >>= (byte)(int)var_22]);
+ var_15 = "m";
+ }
+
+
+
+
+
+ protected final static Tester_Class_0 func_0(final char arg_0, boolean arg_1)
+ {
+ final short var_23 = false ? (short)2.2956268E38F : var_20;
+ {
+ ((new Tester_Class_1[var_21])[var_20]).var_15 = ((new Tester_Class_0[var_20][var_21])[var_21])[var_20];
+ }
+ var_19 = var_23;
+ {
+ var_21++;
+ --var_21;
+ var_13 = (false ? arg_1 : arg_1) ? "" : "aianteahl";
+ arg_1 ^= ! (var_14 ? var_14 : !var_14);
+ }
+ (arg_1 ? "rq" : "certd").trim();
+ arg_1 ^= 's' < var_22;
+ var_19 = 'T';
+ var_19 = var_14 ? --var_21 : var_20;
+ var_19 = (var_21 >>>= ~ -1559436447128426496L >> 88912720393932800L) | (new char[var_20][var_21])[var_21][var_20];
+ short var_24 = 7601;
+ if (arg_1)
+ {
+ var_13 = (new Tester_Class_0[var_20])[var_21];
+ }
+ else
+ {
+ var_19 = var_23;
+ }
+ var_19 = var_24;
+ var_19 = 174274929356416000L;
+ return arg_1 ? (Tester_Class_0)(new Object[var_20])[var_21 >>>= - ((byte)6471979169965446144L)] : (new Tester_Class_0[var_21])[var_20];
+ }
+
+ private static int func_1(final Object arg_0, final boolean arg_1)
+ {
+ var_19 = 'N';
+ var_13 = "ftspm".toUpperCase();
+ var_18 = arg_1 ? !arg_1 : var_14;
+ var_19 = var_21 % 'j';
+ {
+ var_13 = new short[var_21 >>= 8019540572802872320L];
+ }
+ final Tester_Class_0 var_25 = arg_1 ? ((short)1.3614569631193786E308 >= (short)var_20 ? func_0('O', true) : (Tester_Class_0)arg_0) : func_0('e', false);
+ "cltpxrg".offsetByCodePoints((new short[var_20])[(byte)'F'] & var_20, 942627356);
+ final Object var_26 = ((new Tester_Class_1[var_21])[var_20]).var_15 = arg_0;
+ {
+ var_21 |= 'H';
+ }
+ var_19 = 4705089801895780352L;
+ var_19 = (var_18 = arg_1 & false) ? var_20 : (! (~var_21 > var_22) ? (new short[var_20])[var_21] : (short)3904907750551380992L);
+ var_18 = false;
+ {
+ var_18 = "aoy".startsWith("ia", 18060804);
+ if (true)
+ {
+ final short var_27 = 4832;
+ }
+ else
+ {
+ var_18 = (var_18 = arg_1) ? !false : !var_14;
+ }
+ var_18 = (var_18 = var_14);
+ var_19 = 'L';
+ }
+ func_0((false ? ! ((var_21 -= 4.670301365216022E307) > 1.1839209E37F) : (var_18 = false)) ? 's' : 'R', 'Z' > - ((long)var_21) << 2585724390819764224L & var_25.func_2(var_21, false, var_13 = var_25) != 4918861136400833536L);
+ double var_28 = 0;
+ var_21 %= -var_28;
+ for (byte var_29 = 91; arg_1 && (var_28 < 1 && false); var_19 = var_20)
+ {
+ var_19 = (var_18 = arg_1) & (var_18 = false) ? 'm' : '[';
+ var_28++;
+ var_18 = var_14;
+ var_21 += (short)1363703973;
+ }
+ var_19 = (var_19 = var_22);
+ var_18 = (var_18 = false | false ? 1743087391 <= (var_21 >>= 8790741242417599488L) : !arg_1);
+ var_18 = true | true;
+ --var_21;
+ var_18 = !var_14 & false;
+ "mt".indexOf(var_14 ? new String("fpu") : "awivb", (var_14 ? !true : (var_18 = var_14)) ? + ++var_21 : ~var_20);
+ return (short)(new float[var_21--])[var_21] & ((var_18 = false) ? (var_21 *= 'N') : var_20 + (short)1680927063794178048L) & 1839004800;
+ }
+
+ protected static int func_2(Tester_Class_0[][] arg_0)
+ {
+ ((new Tester_Class_1[var_20][var_21])[var_20][var_20]).var_15 = ((new int[var_21][var_21][(byte)var_22])[var_21 <<= var_20])[var_20];
+ ((new Tester_Class_1[var_20])[var_20]).var_15 = "d";
+ int var_30 = 0;
+ "joxjgpywp".lastIndexOf(1834367264 >> var_21, (byte)7.572305E37F >>> (false ? (short)2.3909862E38F : + - +3939434849912855552L));
+ while (var_14 | false ^ var_14 && (var_30 < 1 && true))
+ {
+ var_1 = var_20;
+ var_30++;
+ var_13 = new float[var_21][--var_21];
+ boolean var_31;
+ }
+ var_19 = ((new Tester_Class_1[var_21])[var_20]).var_17 <= (~2158227803735181312L & 6001748808824762368L) ? (short)var_20 : var_20;
+ var_18 = (var_18 = true);
+ return (byte)(new short[var_20])[var_20] >>> ((new char[var_21][var_21])[var_21 |= 6074708801143703552L])[var_20];
+ }
+
+ private final String func_3(boolean arg_0, short arg_1, short arg_2)
+ {
+ var_13 = (Tester_Class_0)((arg_0 ^= arg_0) ? (var_13 = (var_15 = (var_15 = "grfphyrs"))) : (var_13 = new Object[var_21 *= ']']));
+ if (true & ! (arg_0 ^= !arg_0 | true))
+ {
+ boolean var_32 = true;
+ var_19 = --arg_1;
+ arg_2 <<= var_21;
+ }
+ else
+ {
+ arg_0 |= false;
+ }
+ var_21 >>>= arg_1;
+ final float var_33 = 2.5500976E38F;
+ return "";
+ }
+
+ private static String func_4(final double arg_0, final Object arg_1, final short[] arg_2, final char arg_3)
+ {
+ float var_34;
+ var_21++;
+ ((new Tester_Class_1[var_20])[var_20]).var_15 = false ? arg_1 : arg_1;
+ var_13 = arg_1;
+ var_19 = var_22;
+ var_13 = new long[var_21 /= 1038797776 + var_21][--var_21];
+ ++var_21;
+ var_18 = false && false;
+ var_21--;
+ "".lastIndexOf("kjro");
+ final int var_35 = (var_21 <<= var_21--) * var_21--;
+ if ("kohilkx".startsWith("gy", var_35))
+ {
+ var_34 = 2.0849673E37F;
+ }
+ else
+ {
+ double var_36 = arg_0;
+ }
+ var_34 = (var_21 /= var_20);
+ {
+ func_2(new Tester_Class_0[var_20][var_21]);
+ var_34 = var_20 * (- ~5805881602002385920L / arg_3) << (short)~8041668398152312832L;
+ var_13 = (var_13 = "qfwbfdf");
+ }
+ ((new Tester_Class_1[var_20])[var_21 += var_20]).var_15 = false ? func_0(arg_3, var_14) : func_0('J', var_18 = var_14);
+ var_18 = (var_18 = var_14) & var_14;
+ if ((new boolean[var_21])[var_21 >>= 121380821])
+ {
+ var_34 = 1382979413;
+ }
+ else
+ {
+ var_34 = (var_20 & var_20) + (true ? 'I' : arg_3);
+ }
+ byte var_37;
+ ((new Tester_Class_1[var_20][var_21])[var_14 ^ var_14 | !var_14 ? var_20 : var_20][var_21 ^= (short)1692053070 & + ~7232298887878750208L - 1512699919]).var_15 = arg_2;
+ byte var_38 = 1;
+ var_38 -= arg_0;
+ var_34 = arg_3;
+ return var_14 ? "" : "xgkr".toUpperCase();
+ }
+
+ public String toString()
+ {
+ String result = "[\n";
+ result += "Tester_Class_1.var_1 = "; result += Tester.Printer.print(var_1);
+ result += "\n";
+ result += "Tester_Class_1.var_16 = "; result += Tester.Printer.print(var_16);
+ result += "\n";
+ result += "Tester_Class_1.var_20 = "; result += Tester.Printer.print(var_20);
+ result += "\n";
+ result += "Tester_Class_1.var_21 = "; result += Tester.Printer.print(var_21);
+ result += "\n";
+ result += "Tester_Class_1.var_14 = "; result += Tester.Printer.print(var_14);
+ result += "\n";
+ result += "Tester_Class_1.var_18 = "; result += Tester.Printer.print(var_18);
+ result += "\n";
+ result += "Tester_Class_1.var_17 = "; result += Tester.Printer.print(var_17);
+ result += "\n";
+ result += "Tester_Class_1.var_19 = "; result += Tester.Printer.print(var_19);
+ result += "\n";
+ result += "Tester_Class_1.var_22 = "; result += Tester.Printer.print(var_22);
+ result += "\n";
+ result += "Tester_Class_1.var_13 = "; result += Tester.Printer.print(var_13);
+ result += "\n";
+ result += "Tester_Class_1.var_15 = "; result += Tester.Printer.print(var_15);
+ result += "";
+ result += "\n]";
+ return result;
+ }
+}
+
+
+class Tester_Class_2 extends Tester_Class_0 {
+ final int var_43 = 1600723343;
+ static long var_44 = ~1297640037857117184L;
+ static String var_45 = "ejaglds";
+ double var_46;
+ static float var_47 = 7.9423827E37F;
+ static Tester_Class_1[][] var_48;
+
+
+ public Tester_Class_2()
+ {
+ var_45 = (var_45 = "nkulkweqt");
+ var_47 %= (new char[Tester_Class_1.var_21 >>= (short)Tester_Class_1.var_20])[Tester_Class_1.var_20];
+ {
+ Tester_Class_1.var_18 = Tester_Class_1.var_14;
+ }
+ var_47 %= 1.559461406041646E308;
+ var_44 -= Tester_Class_1.var_21++ & ((new Tester_Class_1[Tester_Class_1.var_20])[Tester_Class_1.var_20]).var_17;
+ var_44 *= false ? (short)Tester_Class_1.var_20 : (short)var_47;
+ Tester_Class_1.var_13 = (new Tester_Class_1().var_15 = new char[Tester_Class_1.var_20]);
+ var_46 = 'i';
+ double var_49 = var_46 = false ? (var_47 *= (var_46 = var_43)) : Tester_Class_1.var_20;
+ var_49 += 'k';
+ }
+
+
+
+
+ public String toString()
+ {
+ String result = "[\n";
+ result += "Tester_Class_2.var_43 = "; result += Tester.Printer.print(var_43);
+ result += "\n";
+ result += "Tester_Class_2.var_48 = "; result += Tester.Printer.print(var_48);
+ result += "\n";
+ result += "Tester_Class_2.var_44 = "; result += Tester.Printer.print(var_44);
+ result += "\n";
+ result += "Tester_Class_2.var_46 = "; result += Tester.Printer.print(var_46);
+ result += "\n";
+ result += "Tester_Class_2.var_47 = "; result += Tester.Printer.print(var_47);
+ result += "\n";
+ result += "Tester_Class_2.var_1 = "; result += Tester.Printer.print(var_1);
+ result += "\n";
+ result += "Tester_Class_2.var_45 = "; result += Tester.Printer.print(var_45);
+ result += "";
+ result += "\n]";
+ return result;
+ }
+}
+
+
+class Tester_Class_3 extends Tester_Class_0 {
+ byte var_50;
+ int var_51;
+ static double var_52;
+ static boolean var_53 = true;
+ long var_54;
+ static short var_55;
+ short var_56;
+
+
+ public Tester_Class_3()
+ {
+ var_53 |= false;
+ (Tester_Class_2.var_45 = "gpbcgq").replaceAll("m".concat(Tester_Class_2.var_45 = "q"), Tester_Class_2.var_45).indexOf(Tester_Class_2.var_45 = "d");
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ double var_68 = 0;
+ Tester_Class_1.var_19 = (var_55 = Tester_Class_1.var_20);
+ do
+ {
+ var_53 ^= 'T' > Tester_Class_1.var_21-- & (var_53 |= Tester_Class_1.var_14);
+ Tester_Class_2.var_44 >>= (char)3.928497616986412E307;
+ var_68++;
+ new Tester_Class_2().func_2(Tester_Class_1.var_20, !var_53 & Tester_Class_1.var_14, Tester_Class_1.var_13 = (Tester_Class_2.var_45 = Tester_Class_2.var_45));
+ } while ((((var_56 = (short)1161292485) != 'M' ? var_53 : Tester_Class_1.var_14) ? Tester_Class_1.var_14 ^ true : var_53) && var_68 < 1);
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ ((Tester_Class_1)(Tester_Class_1.var_13 = new Tester_Class_2())).var_15 = Tester_Class_2.var_45;
+ var_55 = func_1() | ((Tester_Class_1.var_18 = var_53) | (var_53 |= Tester_Class_1.var_14) | Tester_Class_1.var_14 | !Tester_Class_1.var_14) || false ? (short)Tester_Class_2.var_44 : (var_56 = (var_56 = (short)'['));
+ var_52 = (var_51 = (var_55 = Tester_Class_1.var_20));
+ double var_69 = 0;
+ Tester_Class_2.var_44 |= (Tester_Class_1.var_14 ? (Tester_Class_2)(Tester_Class_1.var_13 = (Tester_Class_2)(Tester_Class_1.var_13 = Tester_Class_2.var_45)) : (Tester_Class_2)(Tester_Class_0)(Tester_Class_1.var_13 = Tester_Class_2.var_45)).var_43;
+ do
+ {
+ var_51 = 495861255;
+ var_69++;
+ } while (var_69 < 3);
+ Tester_Class_2.var_47 -= Tester_Class_1.var_20;
+ Tester_Class_2.var_47 %= '[';
+ }
+
+
+
+
+ static Object func_0(final Tester_Class_0 arg_0, String arg_1, final float arg_2, final long arg_3)
+ {
+ (!var_53 | (var_53 &= var_53) ^ false ? new Tester_Class_1() : (Tester_Class_1)(new Tester_Class_0[Tester_Class_1.var_21])[Tester_Class_1.var_21]).var_15 = Tester_Class_1.var_14 ? new Tester_Class_1() : new Tester_Class_1();
+ Tester_Class_2.var_47 /= !var_53 || var_53 ? (short)(((Tester_Class_2)arg_0).var_46 = (new char[Tester_Class_1.var_21][Tester_Class_1.var_21])[Tester_Class_1.var_20][Tester_Class_1.var_20]) : Tester_Class_1.var_21;
+ return (new Object[Tester_Class_1.var_21])[Tester_Class_1.var_21];
+ }
+
+ boolean func_1()
+ {
+ {
+ Tester_Class_1.var_21 >>= (var_56 = (Tester_Class_1.var_21 |= (Tester_Class_1.var_21 -= Tester_Class_1.var_20)));
+ Tester_Class_2.var_45 = "w";
+ var_51 = Tester_Class_1.var_21;
+ Object var_57;
+ ((Tester_Class_2)(Tester_Class_0)((new Object[Tester_Class_1.var_21][Tester_Class_1.var_21])[Tester_Class_1.var_20])[Tester_Class_1.var_20]).var_46 = (var_52 = 1.3957085765622284E308);
+ }
+ Tester_Class_1.var_21 &= (var_55 = (byte)(Tester_Class_1.var_14 ? -Tester_Class_1.var_20 : 4290961666344782848L));
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ var_51 = (var_53 ^= ((var_53 &= Tester_Class_1.var_14) ? 'J' : 'M') > (var_56 = Tester_Class_1.var_21)) && (var_53 = Tester_Class_1.var_14) ? (Tester_Class_1.var_21 &= ~Tester_Class_1.var_20) : Tester_Class_1.var_20;
+ {
+ final Tester_Class_1 var_58 = (Tester_Class_1)(Tester_Class_0)(Tester_Class_1.var_13 = (new Object[Tester_Class_1.var_21])[Tester_Class_1.var_20]);
+ Object var_59;
+ Tester_Class_1.var_21 |= 'X';
+ var_53 ^= Tester_Class_1.var_14;
+ }
+ int var_60 = 0;
+ var_53 |= var_53;
+ for (char var_61 = 'i'; (Tester_Class_1.var_14 ? false : Tester_Class_1.var_14) | (true | Tester_Class_1.var_14) && var_60 < 1; var_53 &= !Tester_Class_1.var_14)
+ {
+ var_51 = var_61;
+ var_60++;
+ var_61 &= (new short[Tester_Class_1.var_20][Tester_Class_1.var_20])[Tester_Class_1.var_20][Tester_Class_1.var_21];
+ Tester_Class_2.var_45 = "vsuy";
+ }
+ Tester_Class_2 var_62 = ((var_53 &= Tester_Class_1.var_14 | Tester_Class_1.var_14 || Tester_Class_1.var_14) ? Tester_Class_1.var_14 : "hgwne".startsWith("etyhd", var_60)) ? (var_53 ? (Tester_Class_2)(Tester_Class_1.var_13 = "uyiaxtqc") : (Tester_Class_2)(Tester_Class_1.var_13 = Tester_Class_2.var_45)) : new Tester_Class_2();
+ var_62 = var_62;
+ float var_63;
+ Object var_64;
+ Tester_Class_2.var_44 <<= 'v';
+ String var_65;
+ {
+ var_51 = Tester_Class_1.var_21;
+ }
+ var_55 = true ? (var_56 = Tester_Class_1.var_20) : (var_55 = Tester_Class_1.var_20);
+ var_56 = Tester_Class_1.var_21;
+ Tester_Class_1.var_21 |= var_60;
+ Object var_66;
+ Tester_Class_2 var_67;
+ return true & Tester_Class_1.var_14 ^ (false ? var_53 : var_53);
+ }
+
+ public String toString()
+ {
+ String result = "[\n";
+ result += "Tester_Class_3.var_51 = "; result += Tester.Printer.print(var_51);
+ result += "\n";
+ result += "Tester_Class_3.var_54 = "; result += Tester.Printer.print(var_54);
+ result += "\n";
+ result += "Tester_Class_3.var_52 = "; result += Tester.Printer.print(var_52);
+ result += "\n";
+ result += "Tester_Class_3.var_55 = "; result += Tester.Printer.print(var_55);
+ result += "\n";
+ result += "Tester_Class_3.var_56 = "; result += Tester.Printer.print(var_56);
+ result += "\n";
+ result += "Tester_Class_3.var_1 = "; result += Tester.Printer.print(var_1);
+ result += "\n";
+ result += "Tester_Class_3.var_50 = "; result += Tester.Printer.print(var_50);
+ result += "\n";
+ result += "Tester_Class_3.var_53 = "; result += Tester.Printer.print(var_53);
+ result += "";
+ result += "\n]";
+ return result;
+ }
+}
+
+public class Tester {
+ final long var_70 = Tester_Class_2.var_44;
+ int var_71;
+ static double var_72;
+ static short var_73 = (Tester_Class_3.var_53 &= (Tester_Class_3.var_53 ^= Tester_Class_3.var_53)) ? (short)(byte)(Tester_Class_3.var_55 = Tester_Class_1.var_20) : (Tester_Class_3.var_55 = Tester_Class_1.var_20);
+ final static short var_74 = (Tester_Class_3.var_53 &= Tester_Class_3.var_53) ? (Tester_Class_3.var_53 ? var_73 : var_73++) : (var_73 *= (Tester_Class_1.var_21 |= var_73));
+ float var_75;
+
+
+ protected final Tester_Class_2 func_0()
+ {
+ Tester_Class_1.var_21 ^= ~Tester_Class_1.var_21;
+ if (false)
+ {
+ ((Tester_Class_3)(new Object[Tester_Class_1.var_21])[Tester_Class_1.var_21 -= + + (Tester_Class_2.var_44 >>>= Tester_Class_1.var_21)]).var_50 = (Tester_Class_1.var_21 &= (var_71 = 554295231));
+ }
+ else
+ {
+ Tester_Class_2.var_47 += 'H';
+ }
+ final Tester_Class_0 var_76 = ((new Tester_Class_0[Tester_Class_1.var_20][Tester_Class_1.var_21])[Tester_Class_1.var_20])[Tester_Class_1.var_20];
+ (Tester_Class_1.var_14 ? (Tester_Class_2)var_76 : (Tester_Class_2)var_76).var_46 = (var_73 %= var_74 / (((new Tester_Class_2[Tester_Class_1.var_20])[Tester_Class_1.var_21 |= Tester_Class_1.var_20]).var_46 = Tester_Class_1.var_22));
+ var_73 |= ((Tester_Class_2)(Tester_Class_1.var_13 = var_76)).var_43 | Tester_Class_1.var_20;
+ return new Tester_Class_2();
+ }
+
+ private static Tester_Class_3 func_1(byte arg_0, Tester_Class_1 arg_1, Tester_Class_1 arg_2, final int arg_3)
+ {
+ arg_0 <<= '`';
+ return false ? (Tester_Class_3)(Tester_Class_0)(arg_1.var_15 = (arg_1 = arg_2)) : (Tester_Class_3)((new Tester_Class_0[Tester_Class_1.var_20][arg_0])[Tester_Class_1.var_20])[Tester_Class_1.var_20];
+ }
+
+ public static String execute()
+ {
+ try {
+ Tester t = new Tester();
+ try { t.test(); }
+ catch(Throwable e) { }
+ try { return t.toString(); }
+ catch (Throwable e) { return "Error during result conversion to String"; }
+ } catch (Throwable e) { return "Error during test execution"; }
+ }
+
+ public static void main(String[] args)
+ {
+ for (int i = 0; i < 20000; i++) {
+ Tester t = new Tester();
+ try { t.test(); }
+ catch(Throwable e) { }
+ if (t.var_71 != 0 ||
+ t.var_70 != -1297640037857117185L ||
+ t.var_72 != 0.0 ||
+ t.var_75 != 0.0 ||
+ t.var_73 != -1 ||
+ t.var_74 != 15129) {
+ throw new InternalError("wrong answer");
+ }
+ }
+ }
+
+ private void test()
+ {
+ long var_77 = 0L;
+ var_73 /= (Tester_Class_2.var_47 = 'D' | 'Q');
+ Tester_Class_2.var_47 *= 't';
+ while (var_77 < 36)
+ {
+ var_73 += Tester_Class_1.var_22;
+ Tester_Class_2.var_47 += Tester_Class_1.var_20;
+ var_77++;
+ Tester_Class_2.var_45 = "";
+ Tester_Class_2.var_45 = (Tester_Class_2.var_45 = Tester_Class_2.var_45);
+ }
+ if (Tester_Class_3.var_53 |= false)
+ {
+ int var_78 = 0;
+ (false ? "idipdjrln" : "l").startsWith(Tester_Class_2.var_45);
+ while ((Tester_Class_3.var_53 |= (Tester_Class_3.var_53 &= ! (Tester_Class_1.var_18 = true)) | Tester_Class_3.var_53) && (var_78 < 15 && (Tester_Class_3.var_53 &= Tester_Class_1.var_14)))
+ {
+ Tester_Class_2.var_44 <<= 'b';
+ var_78++;
+ var_72 = var_74;
+ var_71 = (char)6792782617594333184L;
+ }
+ float var_79 = Tester_Class_2.var_47 /= 1.5148047552641134E308;
+ ((new boolean[Tester_Class_1.var_20])[Tester_Class_1.var_21 <= (Tester_Class_1.var_21 -= 9.675021723726166E307) / - + (var_72 = 4.3844763012510596E307) ? (byte)(Tester_Class_2.var_44 += ~Tester_Class_1.var_21) : (Tester_Class_1.var_21 += 1.7430965313164616E308)] ? (Tester_Class_2)(new Tester_Class_1().var_15 = func_0()) : new Tester_Class_2()).var_46 = (var_72 = (Tester_Class_1.var_21 *= 'j'));
+ Tester_Class_1.var_13 = (new Tester_Class_3[Tester_Class_1.var_21 >>>= var_78][Tester_Class_1.var_21])[Tester_Class_1.var_21][Tester_Class_1.var_20];
+ }
+ else
+ {
+ long var_80 = 0L;
+ ((Tester_Class_2)(Tester_Class_1.var_13 = new long[Tester_Class_1.var_21])).var_46 = 'r';
+ do
+ {
+ final float var_81 = 7.3633934E37F;
+ var_80++;
+ var_73 ^= Tester_Class_2.var_44;
+ } while (Tester_Class_3.var_53 && var_80 < 4);
+ Tester_Class_1.var_18 = Tester_Class_2.var_47 >= var_73;
+ Tester_Class_2.var_45 = "xvodcylp";
+ Tester_Class_2.var_45.codePointCount("indreb".charAt(+(new byte[Tester_Class_1.var_20][Tester_Class_1.var_20])[Tester_Class_1.var_21][Tester_Class_1.var_21]) * ~ (Tester_Class_1.var_21 %= (var_71 = --var_73)), ((Tester_Class_3.var_53 ^= Tester_Class_2.var_45.equalsIgnoreCase("rkxwa")) || Tester_Class_2.var_47 <= (Tester_Class_2.var_47 %= -var_80) ? (Tester_Class_1.var_21 ^= var_70) : var_73) & (var_71 = 'k'));
+ Tester_Class_1.var_13 = ((new long[Tester_Class_1.var_21][Tester_Class_1.var_20][Tester_Class_1.var_21])[Tester_Class_1.var_21])[Tester_Class_1.var_21];
+ }
+ var_73 <<= (Tester_Class_1.var_18 = false) ? 't' : (false ? 'E' : 'u');
+ var_73++;
+ int var_82 = 0;
+ Tester_Class_1.var_13 = func_1(Tester_Class_1.var_20, new Tester_Class_1(), (new Tester_Class_1[Tester_Class_1.var_21])[Tester_Class_1.var_21], 'M' & var_74);
+ "gdrlrsubb".substring(12438522, var_82);
+ Tester_Class_2.var_44 |= (((new Tester_Class_3[Tester_Class_1.var_21][Tester_Class_1.var_21])[Tester_Class_1.var_21 >>= 7993744087962264576L][Tester_Class_1.var_21]).var_51 = Tester_Class_3.var_53 ? 'B' : '[');
+ final long var_83 = ~ (4544638910183665664L << (((Tester_Class_3)((new Tester_Class_0[Tester_Class_1.var_20][Tester_Class_1.var_21])[Tester_Class_1.var_21])[Tester_Class_1.var_21]).var_56 = (Tester_Class_3.var_53 &= Tester_Class_3.var_53) ? Tester_Class_1.var_21 : Tester_Class_1.var_20));
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ while (var_82 < 2 && Tester_Class_3.var_53 & (Tester_Class_3.var_53 ^= !false))
+ {
+ (Tester_Class_3.var_53 ? "xqeisnyf" : (Tester_Class_2.var_45 = (Tester_Class_2.var_45 = (Tester_Class_2.var_45 = Tester_Class_2.var_45)))).concat(Tester_Class_2.var_45 = "i");
+ var_82++;
+ boolean var_84 = false;
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ }
+ var_71 = ~Tester_Class_2.var_44 != Tester_Class_2.var_44-- ? (var_73 = var_73) : (var_73 >>>= var_73);
+ char var_85;
+ Tester_Class_3.var_53 |= (Tester_Class_3.var_53 ^= true);
+ int var_86 = 0;
+ Tester_Class_1.var_21 %= (var_73 | (Tester_Class_1.var_21 *= 9.831691E37F)) * (Tester_Class_1.var_21 += 6784278051481715712L);
+ while (Tester_Class_3.var_53 && (var_86 < 24 && ((((Tester_Class_3.var_53 ^= true) ? Tester_Class_3.var_53 : Tester_Class_1.var_14) ? !Tester_Class_3.var_53 : Tester_Class_3.var_53) ? (Tester_Class_1.var_18 = Tester_Class_3.var_53) : Tester_Class_1.var_14 || true)))
+ {
+ final byte var_87 = (byte)((false & true ? Tester_Class_1.var_20 : 257407175) & 4242055901066916864L * (var_73 *= 1621204618) / ((((Tester_Class_1)(new Object[(byte)4.925362697409246E307])[Tester_Class_1.var_21]).var_17 ^ (var_71 = var_86)) & 1859382584));
+ var_86++;
+ Tester_Class_2.var_45 = (Tester_Class_2.var_45 = (Tester_Class_2.var_45 = "arceo"));
+ float var_88;
+ }
+ "a".lastIndexOf(var_71 = Tester_Class_3.var_53 ^ false ? (var_71 = 1058420888) : Tester_Class_1.var_20);
+ int var_89 = 0;
+ {
+ var_71 = 661164411;
+ }
+ boolean var_90;
+ --var_73;
+ Tester_Class_2.var_45.concat(Tester_Class_2.var_45);
+ {
+ var_85 = (Tester_Class_3.var_53 ? Tester_Class_3.var_53 : Tester_Class_3.var_53) ? 'R' : '[';
+ }
+ ((new Tester_Class_2[Tester_Class_1.var_21][Tester_Class_1.var_21])[Tester_Class_1.var_20][Tester_Class_1.var_20]).var_46 = Tester_Class_1.var_20;
+ final float var_91 = ((new Tester_Class_0[Tester_Class_1.var_21][Tester_Class_1.var_21])[Tester_Class_1.var_20][Tester_Class_1.var_21 -= Tester_Class_1.var_21]).equals(((new Tester_Class_1[Tester_Class_1.var_20])[Tester_Class_1.var_21]).var_15 = (Tester_Class_2.var_45 = Tester_Class_2.var_45)) ? (var_71 = Tester_Class_1.var_20) : 2.2259766E38F + Tester_Class_2.var_44;
+ Tester_Class_2.var_47 *= ((Tester_Class_2)(Tester_Class_0)(Tester_Class_1.var_13 = Tester_Class_2.var_45)).var_43;
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ Tester_Class_3.var_53 &= Tester_Class_1.var_14;
+ while (Tester_Class_1.var_20 >= ++Tester_Class_1.var_21 && var_89 < 2)
+ {
+ Tester_Class_1.var_13 = (Tester_Class_3)(new Tester_Class_0[Tester_Class_1.var_21])[Tester_Class_1.var_21];
+ var_89++;
+ if (true)
+ {
+ Tester_Class_3.var_53 |= true;
+ break;
+ }
+ else
+ {
+ Tester_Class_2 var_92;
+ }
+ ((Tester_Class_3)((Tester_Class_3.var_53 |= Tester_Class_3.var_53) ? (new Tester_Class_1().var_15 = (Tester_Class_0)(Tester_Class_1.var_13 = new boolean[Tester_Class_1.var_20][Tester_Class_1.var_21])) : new Tester_Class_0[Tester_Class_1.var_21][Tester_Class_1.var_21])).var_54 = (Tester_Class_1.var_21 = (Tester_Class_1.var_21 /= (Tester_Class_2.var_44 |= (int)(Tester_Class_1.var_21 >>>= var_82))));
+ ((Tester_Class_3)(Tester_Class_1.var_13 = (new Tester_Class_1().var_15 = new Tester_Class_1()))).var_51 = Tester_Class_1.var_20;
+ final char var_93 = 'u';
+ ((Tester_Class_2)(new Tester_Class_1().var_15 = (Tester_Class_2.var_45 = Tester_Class_2.var_45))).var_46 = var_93;
+ Tester_Class_2.var_45.toUpperCase();
+ Tester_Class_2.var_45 = "mhk";
+ (true | false ? new Tester_Class_1() : (new Tester_Class_1[Tester_Class_1.var_20])[Tester_Class_1.var_20]).var_15 = (Tester_Class_1)(((new Tester_Class_1[Tester_Class_1.var_21 |= Tester_Class_1.var_20][Tester_Class_1.var_21])[Tester_Class_1.var_21][Tester_Class_1.var_21]).var_15 = (Tester_Class_1.var_13 = (Tester_Class_1)(Tester_Class_1.var_13 = (Tester_Class_2.var_45 = "ofkbg"))));
+ }
+ float var_94 = 0F;
+ Tester_Class_2.var_44 |= (var_73 >>>= (var_85 = (var_85 = 'j')));
+ Tester_Class_3.var_52 = 1835242863964218368L;
+ do
+ {
+ int var_95 = 1361237611;
+ var_94++;
+ Tester_Class_3.var_53 ^= (Tester_Class_3.var_53 |= Tester_Class_1.var_14);
+ } while (var_94 < 16);
+ {
+ var_73 = var_73--;
+ Tester_Class_2.var_45 = (Tester_Class_1.var_14 ? Tester_Class_1.var_14 : !false) ? "oaxg" : "igdnja";
+ }
+ ((new Tester_Class_1[Tester_Class_1.var_21])[Tester_Class_1.var_21]).equals(new Tester_Class_1().var_15 = (Tester_Class_2.var_45 = "agdnue").charAt(1416972150) != Tester_Class_2.var_47 ? new Tester_Class_1() : new Tester_Class_1());
+ byte var_96 = Tester_Class_1.var_21 >>>= (var_85 = (var_85 = '`'));
+ Tester_Class_2.var_45 = "";
+ Tester_Class_2.var_47 += Tester_Class_2.var_47;
+ Tester_Class_2.var_45 = Tester_Class_2.var_45;
+ }
+ public String toString()
+ {
+ String result = "[\n";
+ result += "Tester.var_71 = "; result += Printer.print(var_71);
+ result += "\n";
+ result += "Tester.var_70 = "; result += Printer.print(var_70);
+ result += "\n";
+ result += "Tester.var_72 = "; result += Printer.print(var_72);
+ result += "\n";
+ result += "Tester.var_75 = "; result += Printer.print(var_75);
+ result += "\n";
+ result += "Tester.var_73 = "; result += Printer.print(var_73);
+ result += "\n";
+ result += "Tester.var_74 = "; result += Printer.print(var_74);
+ result += "";
+ result += "\n]";
+ return result;
+ }
+ static class Printer
+ {
+ public static String print(boolean arg) { return String.valueOf(arg); }
+ public static String print(byte arg) { return String.valueOf(arg); }
+ public static String print(short arg) { return String.valueOf(arg); }
+ public static String print(char arg) { return String.valueOf((int)arg); }
+ public static String print(int arg) { return String.valueOf(arg); }
+ public static String print(long arg) { return String.valueOf(arg); }
+ public static String print(float arg) { return String.valueOf(arg); }
+ public static String print(double arg) { return String.valueOf(arg); }
+
+
+ public static String print(Object arg)
+ {
+ return print_r(new java.util.Stack(), arg);
+ }
+
+ private static String print_r(java.util.Stack visitedObjects, Object arg)
+ {
+ String result = "";
+ if (arg == null)
+ result += "null";
+ else
+ if (arg.getClass().isArray())
+ {
+ for (int i = 0; i < visitedObjects.size(); i++)
+ if (visitedObjects.elementAt(i) == arg) return "<recursive>";
+
+ visitedObjects.push(arg);
+
+ final String delimiter = ", ";
+ result += "[";
+
+ if (arg instanceof Object[])
+ {
+ Object[] array = (Object[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print_r(visitedObjects, array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof boolean[])
+ {
+ boolean[] array = (boolean[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof byte[])
+ {
+ byte[] array = (byte[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof short[])
+ {
+ short[] array = (short[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof char[])
+ {
+ char[] array = (char[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof int[])
+ {
+ int[] array = (int[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof long[])
+ {
+ long[] array = (long[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof float[])
+ {
+ float[] array = (float[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+ else
+ if (arg instanceof double[])
+ {
+ double[] array = (double[]) arg;
+ for (int i = 0; i < array.length; i++)
+ {
+ result += print(array[i]);
+ if (i < array.length - 1) result += delimiter;
+ }
+ }
+
+ result += "]";
+ visitedObjects.pop();
+
+ } else
+ {
+ result += arg.toString();
+ }
+
+ return result;
+ }
+ }
+}
+
+