--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/jvmci/jvmciRuntime.cpp Thu Oct 08 12:49:30 2015 -1000
@@ -0,0 +1,1010 @@
+/*
+ * Copyright (c) 2012, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "precompiled.hpp"
+#include "asm/codeBuffer.hpp"
+#include "code/codeCache.hpp"
+#include "compiler/compileBroker.hpp"
+#include "compiler/disassembler.hpp"
+#include "jvmci/jvmciRuntime.hpp"
+#include "jvmci/jvmciCompilerToVM.hpp"
+#include "jvmci/jvmciCompiler.hpp"
+#include "jvmci/jvmciJavaClasses.hpp"
+#include "jvmci/jvmciEnv.hpp"
+#include "memory/oopFactory.hpp"
+#include "oops/oop.inline.hpp"
+#include "oops/objArrayOop.inline.hpp"
+#include "prims/jvm.h"
+#include "runtime/biasedLocking.hpp"
+#include "runtime/interfaceSupport.hpp"
+#include "runtime/reflection.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/defaultStream.hpp"
+
+#if defined(_MSC_VER)
+#define strtoll _strtoi64
+#endif
+
+jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
+bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
+bool JVMCIRuntime::_well_known_classes_initialized = false;
+const char* JVMCIRuntime::_compiler = NULL;
+int JVMCIRuntime::_options_count = 0;
+SystemProperty** JVMCIRuntime::_options = NULL;
+bool JVMCIRuntime::_shutdown_called = false;
+
+static const char* OPTION_PREFIX = "jvmci.option.";
+static const size_t OPTION_PREFIX_LEN = strlen(OPTION_PREFIX);
+
+BasicType JVMCIRuntime::kindToBasicType(jchar ch) {
+ switch(ch) {
+ case 'z': return T_BOOLEAN;
+ case 'b': return T_BYTE;
+ case 's': return T_SHORT;
+ case 'c': return T_CHAR;
+ case 'i': return T_INT;
+ case 'f': return T_FLOAT;
+ case 'j': return T_LONG;
+ case 'd': return T_DOUBLE;
+ case 'a': return T_OBJECT;
+ case '-': return T_ILLEGAL;
+ default:
+ fatal(err_msg("unexpected Kind: %c", ch));
+ break;
+ }
+ return T_ILLEGAL;
+}
+
+// Simple helper to see if the caller of a runtime stub which
+// entered the VM has been deoptimized
+
+static bool caller_is_deopted() {
+ JavaThread* thread = JavaThread::current();
+ RegisterMap reg_map(thread, false);
+ frame runtime_frame = thread->last_frame();
+ frame caller_frame = runtime_frame.sender(®_map);
+ assert(caller_frame.is_compiled_frame(), "must be compiled");
+ return caller_frame.is_deoptimized_frame();
+}
+
+// Stress deoptimization
+static void deopt_caller() {
+ if ( !caller_is_deopted()) {
+ JavaThread* thread = JavaThread::current();
+ RegisterMap reg_map(thread, false);
+ frame runtime_frame = thread->last_frame();
+ frame caller_frame = runtime_frame.sender(®_map);
+ Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
+ assert(caller_is_deopted(), "Must be deoptimized");
+ }
+}
+
+JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
+ JRT_BLOCK;
+ assert(klass->is_klass(), "not a class");
+ instanceKlassHandle h(thread, klass);
+ h->check_valid_for_instantiation(true, CHECK);
+ // make sure klass is initialized
+ h->initialize(CHECK);
+ // allocate instance and return via TLS
+ oop obj = h->allocate_instance(CHECK);
+ thread->set_vm_result(obj);
+ JRT_BLOCK_END;
+
+ if (ReduceInitialCardMarks) {
+ new_store_pre_barrier(thread);
+ }
+JRT_END
+
+JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
+ JRT_BLOCK;
+ // Note: no handle for klass needed since they are not used
+ // anymore after new_objArray() and no GC can happen before.
+ // (This may have to change if this code changes!)
+ assert(array_klass->is_klass(), "not a class");
+ oop obj;
+ if (array_klass->oop_is_typeArray()) {
+ BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
+ obj = oopFactory::new_typeArray(elt_type, length, CHECK);
+ } else {
+ Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
+ obj = oopFactory::new_objArray(elem_klass, length, CHECK);
+ }
+ thread->set_vm_result(obj);
+ // This is pretty rare but this runtime patch is stressful to deoptimization
+ // if we deoptimize here so force a deopt to stress the path.
+ if (DeoptimizeALot) {
+ static int deopts = 0;
+ // Alternate between deoptimizing and raising an error (which will also cause a deopt)
+ if (deopts++ % 2 == 0) {
+ ResourceMark rm(THREAD);
+ THROW(vmSymbols::java_lang_OutOfMemoryError());
+ } else {
+ deopt_caller();
+ }
+ }
+ JRT_BLOCK_END;
+
+ if (ReduceInitialCardMarks) {
+ new_store_pre_barrier(thread);
+ }
+JRT_END
+
+void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
+ // After any safepoint, just before going back to compiled code,
+ // we inform the GC that we will be doing initializing writes to
+ // this object in the future without emitting card-marks, so
+ // GC may take any compensating steps.
+ // NOTE: Keep this code consistent with GraphKit::store_barrier.
+
+ oop new_obj = thread->vm_result();
+ if (new_obj == NULL) return;
+
+ assert(Universe::heap()->can_elide_tlab_store_barriers(),
+ "compiler must check this first");
+ // GC may decide to give back a safer copy of new_obj.
+ new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
+ thread->set_vm_result(new_obj);
+}
+
+JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
+ assert(klass->is_klass(), "not a class");
+ assert(rank >= 1, "rank must be nonzero");
+ oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
+ thread->set_vm_result(obj);
+JRT_END
+
+JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
+ oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
+ thread->set_vm_result(obj);
+JRT_END
+
+JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
+ instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror));
+
+ if (klass == NULL) {
+ ResourceMark rm(THREAD);
+ THROW(vmSymbols::java_lang_InstantiationException());
+ }
+
+ // Create new instance (the receiver)
+ klass->check_valid_for_instantiation(false, CHECK);
+
+ // Make sure klass gets initialized
+ klass->initialize(CHECK);
+
+ oop obj = klass->allocate_instance(CHECK);
+ thread->set_vm_result(obj);
+JRT_END
+
+extern void vm_exit(int code);
+
+// Enter this method from compiled code handler below. This is where we transition
+// to VM mode. This is done as a helper routine so that the method called directly
+// from compiled code does not have to transition to VM. This allows the entry
+// method to see if the nmethod that we have just looked up a handler for has
+// been deoptimized while we were in the vm. This simplifies the assembly code
+// cpu directories.
+//
+// We are entering here from exception stub (via the entry method below)
+// If there is a compiled exception handler in this method, we will continue there;
+// otherwise we will unwind the stack and continue at the caller of top frame method
+// Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
+// control the area where we can allow a safepoint. After we exit the safepoint area we can
+// check to see if the handler we are going to return is now in a nmethod that has
+// been deoptimized. If that is the case we return the deopt blob
+// unpack_with_exception entry instead. This makes life for the exception blob easier
+// because making that same check and diverting is painful from assembly language.
+JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm))
+ // Reset method handle flag.
+ thread->set_is_method_handle_return(false);
+
+ Handle exception(thread, ex);
+ nm = CodeCache::find_nmethod(pc);
+ assert(nm != NULL, "this is not a compiled method");
+ // Adjust the pc as needed/
+ if (nm->is_deopt_pc(pc)) {
+ RegisterMap map(thread, false);
+ frame exception_frame = thread->last_frame().sender(&map);
+ // if the frame isn't deopted then pc must not correspond to the caller of last_frame
+ assert(exception_frame.is_deoptimized_frame(), "must be deopted");
+ pc = exception_frame.pc();
+ }
+#ifdef ASSERT
+ assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
+ assert(exception->is_oop(), "just checking");
+ // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
+ if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
+ if (ExitVMOnVerifyError) vm_exit(-1);
+ ShouldNotReachHere();
+ }
+#endif
+
+ // Check the stack guard pages and reenable them if necessary and there is
+ // enough space on the stack to do so. Use fast exceptions only if the guard
+ // pages are enabled.
+ bool guard_pages_enabled = thread->stack_yellow_zone_enabled();
+ if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
+
+ if (JvmtiExport::can_post_on_exceptions()) {
+ // To ensure correct notification of exception catches and throws
+ // we have to deoptimize here. If we attempted to notify the
+ // catches and throws during this exception lookup it's possible
+ // we could deoptimize on the way out of the VM and end back in
+ // the interpreter at the throw site. This would result in double
+ // notifications since the interpreter would also notify about
+ // these same catches and throws as it unwound the frame.
+
+ RegisterMap reg_map(thread);
+ frame stub_frame = thread->last_frame();
+ frame caller_frame = stub_frame.sender(®_map);
+
+ // We don't really want to deoptimize the nmethod itself since we
+ // can actually continue in the exception handler ourselves but I
+ // don't see an easy way to have the desired effect.
+ Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
+ assert(caller_is_deopted(), "Must be deoptimized");
+
+ return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
+ }
+
+ // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
+ if (guard_pages_enabled) {
+ address fast_continuation = nm->handler_for_exception_and_pc(exception, pc);
+ if (fast_continuation != NULL) {
+ // Set flag if return address is a method handle call site.
+ thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
+ return fast_continuation;
+ }
+ }
+
+ // If the stack guard pages are enabled, check whether there is a handler in
+ // the current method. Otherwise (guard pages disabled), force an unwind and
+ // skip the exception cache update (i.e., just leave continuation==NULL).
+ address continuation = NULL;
+ if (guard_pages_enabled) {
+
+ // New exception handling mechanism can support inlined methods
+ // with exception handlers since the mappings are from PC to PC
+
+ // debugging support
+ // tracing
+ if (TraceExceptions) {
+ ttyLocker ttyl;
+ ResourceMark rm;
+ tty->print_cr("Exception <%s> (" INTPTR_FORMAT ") thrown in compiled method <%s> at PC " INTPTR_FORMAT " for thread " INTPTR_FORMAT "",
+ exception->print_value_string(), p2i((address)exception()), nm->method()->print_value_string(), p2i(pc), p2i(thread));
+ }
+ // for AbortVMOnException flag
+ NOT_PRODUCT(Exceptions::debug_check_abort(exception));
+
+ // Clear out the exception oop and pc since looking up an
+ // exception handler can cause class loading, which might throw an
+ // exception and those fields are expected to be clear during
+ // normal bytecode execution.
+ thread->clear_exception_oop_and_pc();
+
+ continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false);
+ // If an exception was thrown during exception dispatch, the exception oop may have changed
+ thread->set_exception_oop(exception());
+ thread->set_exception_pc(pc);
+
+ // the exception cache is used only by non-implicit exceptions
+ if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
+ nm->add_handler_for_exception_and_pc(exception, pc, continuation);
+ }
+ }
+
+ // Set flag if return address is a method handle call site.
+ thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
+
+ if (TraceExceptions) {
+ ttyLocker ttyl;
+ ResourceMark rm;
+ tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT,
+ p2i(thread), p2i(continuation), p2i(pc));
+ }
+
+ return continuation;
+JRT_END
+
+// Enter this method from compiled code only if there is a Java exception handler
+// in the method handling the exception.
+// We are entering here from exception stub. We don't do a normal VM transition here.
+// We do it in a helper. This is so we can check to see if the nmethod we have just
+// searched for an exception handler has been deoptimized in the meantime.
+address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
+ oop exception = thread->exception_oop();
+ address pc = thread->exception_pc();
+ // Still in Java mode
+ DEBUG_ONLY(ResetNoHandleMark rnhm);
+ nmethod* nm = NULL;
+ address continuation = NULL;
+ {
+ // Enter VM mode by calling the helper
+ ResetNoHandleMark rnhm;
+ continuation = exception_handler_for_pc_helper(thread, exception, pc, nm);
+ }
+ // Back in JAVA, use no oops DON'T safepoint
+
+ // Now check to see if the compiled method we were called from is now deoptimized.
+ // If so we must return to the deopt blob and deoptimize the nmethod
+ if (nm != NULL && caller_is_deopted()) {
+ continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
+ }
+
+ assert(continuation != NULL, "no handler found");
+ return continuation;
+}
+
+JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread))
+ SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException());
+ thread->set_vm_result(PENDING_EXCEPTION);
+ CLEAR_PENDING_EXCEPTION;
+JRT_END
+
+JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index))
+ char message[jintAsStringSize];
+ sprintf(message, "%d", index);
+ SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message);
+ thread->set_vm_result(PENDING_EXCEPTION);
+ CLEAR_PENDING_EXCEPTION;
+JRT_END
+
+JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
+ IF_TRACE_jvmci_3 {
+ char type[O_BUFLEN];
+ obj->klass()->name()->as_C_string(type, O_BUFLEN);
+ markOop mark = obj->mark();
+ TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock));
+ tty->flush();
+ }
+#ifdef ASSERT
+ if (PrintBiasedLockingStatistics) {
+ Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
+ }
+#endif
+ Handle h_obj(thread, obj);
+ assert(h_obj()->is_oop(), "must be NULL or an object");
+ if (UseBiasedLocking) {
+ // Retry fast entry if bias is revoked to avoid unnecessary inflation
+ ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
+ } else {
+ if (JVMCIUseFastLocking) {
+ // When using fast locking, the compiled code has already tried the fast case
+ ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
+ } else {
+ ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
+ }
+ }
+ TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
+JRT_END
+
+JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
+ assert(thread == JavaThread::current(), "threads must correspond");
+ assert(thread->last_Java_sp(), "last_Java_sp must be set");
+ // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
+ EXCEPTION_MARK;
+
+#ifdef DEBUG
+ if (!obj->is_oop()) {
+ ResetNoHandleMark rhm;
+ nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
+ if (method != NULL) {
+ tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
+ }
+ thread->print_stack_on(tty);
+ assert(false, "invalid lock object pointer dected");
+ }
+#endif
+
+ if (JVMCIUseFastLocking) {
+ // When using fast locking, the compiled code has already tried the fast case
+ ObjectSynchronizer::slow_exit(obj, lock, THREAD);
+ } else {
+ ObjectSynchronizer::fast_exit(obj, lock, THREAD);
+ }
+ IF_TRACE_jvmci_3 {
+ char type[O_BUFLEN];
+ obj->klass()->name()->as_C_string(type, O_BUFLEN);
+ TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock));
+ tty->flush();
+ }
+JRT_END
+
+JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, jint flags))
+ bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING);
+ bool addr = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS);
+ bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE);
+ if (!string) {
+ if (!addr && obj->is_oop_or_null(true)) {
+ char buf[O_BUFLEN];
+ tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
+ } else {
+ tty->print(INTPTR_FORMAT, p2i(obj));
+ }
+ } else {
+ ResourceMark rm;
+ assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
+ char *buf = java_lang_String::as_utf8_string(obj);
+ tty->print_raw(buf);
+ }
+ if (newline) {
+ tty->cr();
+ }
+JRT_END
+
+JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
+ thread->satb_mark_queue().enqueue(obj);
+JRT_END
+
+JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
+ thread->dirty_card_queue().enqueue(card_addr);
+JRT_END
+
+JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
+ bool ret = true;
+ if(!Universe::heap()->is_in_closed_subset(parent)) {
+ tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
+ parent->print();
+ ret=false;
+ }
+ if(!Universe::heap()->is_in_closed_subset(child)) {
+ tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
+ child->print();
+ ret=false;
+ }
+ return (jint)ret;
+JRT_END
+
+JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
+ ResourceMark rm;
+ const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
+ char *detail_msg = NULL;
+ if (format != 0L) {
+ const char* buf = (char*) (address) format;
+ size_t detail_msg_length = strlen(buf) * 2;
+ detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
+ jio_snprintf(detail_msg, detail_msg_length, buf, value);
+ }
+ report_vm_error(__FILE__, __LINE__, error_msg, detail_msg);
+JRT_END
+
+JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
+ oop exception = thread->exception_oop();
+ assert(exception != NULL, "npe");
+ thread->set_exception_oop(NULL);
+ thread->set_exception_pc(0);
+ return exception;
+JRT_END
+
+PRAGMA_DIAG_PUSH
+PRAGMA_FORMAT_NONLITERAL_IGNORED
+JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
+ ResourceMark rm;
+ assert(format != NULL && java_lang_String::is_instance(format), "must be");
+ char *buf = java_lang_String::as_utf8_string(format);
+ tty->print((const char*)buf, v1, v2, v3);
+JRT_END
+PRAGMA_DIAG_POP
+
+static void decipher(jlong v, bool ignoreZero) {
+ if (v != 0 || !ignoreZero) {
+ void* p = (void *)(address) v;
+ CodeBlob* cb = CodeCache::find_blob(p);
+ if (cb) {
+ if (cb->is_nmethod()) {
+ char buf[O_BUFLEN];
+ tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin()));
+ return;
+ }
+ cb->print_value_on(tty);
+ return;
+ }
+ if (Universe::heap()->is_in(p)) {
+ oop obj = oop(p);
+ obj->print_value_on(tty);
+ return;
+ }
+ tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
+ }
+}
+
+PRAGMA_DIAG_PUSH
+PRAGMA_FORMAT_NONLITERAL_IGNORED
+JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
+ ResourceMark rm;
+ const char *buf = (const char*) (address) format;
+ if (vmError) {
+ if (buf != NULL) {
+ fatal(err_msg(buf, v1, v2, v3));
+ } else {
+ fatal("<anonymous error>");
+ }
+ } else if (buf != NULL) {
+ tty->print(buf, v1, v2, v3);
+ } else {
+ assert(v2 == 0, "v2 != 0");
+ assert(v3 == 0, "v3 != 0");
+ decipher(v1, false);
+ }
+JRT_END
+PRAGMA_DIAG_POP
+
+JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
+ union {
+ jlong l;
+ jdouble d;
+ jfloat f;
+ } uu;
+ uu.l = value;
+ switch (typeChar) {
+ case 'z': tty->print(value == 0 ? "false" : "true"); break;
+ case 'b': tty->print("%d", (jbyte) value); break;
+ case 'c': tty->print("%c", (jchar) value); break;
+ case 's': tty->print("%d", (jshort) value); break;
+ case 'i': tty->print("%d", (jint) value); break;
+ case 'f': tty->print("%f", uu.f); break;
+ case 'j': tty->print(JLONG_FORMAT, value); break;
+ case 'd': tty->print("%lf", uu.d); break;
+ default: assert(false, "unknown typeChar"); break;
+ }
+ if (newline) {
+ tty->cr();
+ }
+JRT_END
+
+JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
+ return (jint) obj->identity_hash();
+JRT_END
+
+JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
+ // Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
+ // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
+ Handle receiverHandle(thread, receiver);
+ MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
+ JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
+ if (receiverThread == NULL) {
+ // The other thread may exit during this process, which is ok so return false.
+ return JNI_FALSE;
+ } else {
+ return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
+ }
+JRT_END
+
+JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
+ deopt_caller();
+ return value;
+JRT_END
+
+// private static JVMCIRuntime JVMCI.initializeRuntime()
+JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
+ if (!EnableJVMCI) {
+ THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
+ }
+ JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
+ jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
+ return ret;
+JVM_END
+
+Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
+ guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
+
+ TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
+ KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
+ TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
+ TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
+ JavaValue result(T_OBJECT);
+ if (args == NULL) {
+ JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
+ } else {
+ JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
+ }
+ return Handle((oop)result.get_jobject());
+}
+
+static bool jvmci_options_file_exists() {
+ const char* home = Arguments::get_java_home();
+ size_t path_len = strlen(home) + strlen("/lib/jvmci/options") + 1;
+ char path[JVM_MAXPATHLEN];
+ char sep = os::file_separator()[0];
+ jio_snprintf(path, JVM_MAXPATHLEN, "%s%clib%cjvmci%coptions", home, sep, sep, sep);
+ struct stat st;
+ return os::stat(path, &st) == 0;
+}
+
+void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
+ if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
+#ifdef ASSERT
+ // This should only be called in the context of the JVMCI class being initialized
+ TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK);
+ Klass* k = SystemDictionary::resolve_or_null(name, CHECK);
+ instanceKlassHandle klass = InstanceKlass::cast(k);
+ assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
+ "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
+#endif
+
+ bool parseOptionsFile = jvmci_options_file_exists();
+ if (_options != NULL || parseOptionsFile) {
+ JavaCallArguments args;
+ objArrayOop options;
+ if (_options != NULL) {
+ options = oopFactory::new_objArray(SystemDictionary::String_klass(), _options_count * 2, CHECK);
+ for (int i = 0; i < _options_count; i++) {
+ SystemProperty* prop = _options[i];
+ oop name = java_lang_String::create_oop_from_str(prop->key() + OPTION_PREFIX_LEN, CHECK);
+ oop value = java_lang_String::create_oop_from_str(prop->value(), CHECK);
+ options->obj_at_put(i * 2, name);
+ options->obj_at_put((i * 2) + 1, value);
+ }
+ } else {
+ options = NULL;
+ }
+ args.push_oop(options);
+ args.push_int(parseOptionsFile);
+ callStatic("jdk/vm/ci/options/OptionsParser",
+ "parseOptionsFromVM",
+ "([Ljava/lang/String;Z)Ljava/lang/Boolean;", &args, CHECK);
+ }
+
+ if (_compiler != NULL) {
+ JavaCallArguments args;
+ oop compiler = java_lang_String::create_oop_from_str(_compiler, CHECK);
+ args.push_oop(compiler);
+ callStatic("jdk/vm/ci/hotspot/HotSpotJVMCICompilerConfig",
+ "selectCompiler",
+ "(Ljava/lang/String;)Ljava/lang/Boolean;", &args, CHECK);
+ }
+
+ Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
+ "runtime",
+ "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
+ _HotSpotJVMCIRuntime_initialized = true;
+ _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result());
+ }
+}
+
+void JVMCIRuntime::initialize_JVMCI(TRAPS) {
+ if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
+ callStatic("jdk/vm/ci/runtime/JVMCI",
+ "getRuntime",
+ "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
+ }
+ assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
+}
+
+void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
+ if (JVMCIRuntime::_well_known_classes_initialized == false) {
+ SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
+ SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
+ JVMCIJavaClasses::compute_offsets();
+ JVMCIRuntime::_well_known_classes_initialized = true;
+ }
+}
+
+void JVMCIRuntime::metadata_do(void f(Metadata*)) {
+ // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
+ // the SystemDictionary well known classes should ensure the other
+ // classes have already been loaded, so make sure their order in the
+ // table enforces that.
+ assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
+ SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
+ assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
+ SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
+ assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
+ SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
+
+ if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
+ !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
+ // Nothing could be registered yet
+ return;
+ }
+
+ // WeakReference<HotSpotJVMCIMetaAccessContext>[]
+ objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
+ if (allContexts == NULL) {
+ return;
+ }
+
+ // These must be loaded at this point but the linking state doesn't matter.
+ assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
+ assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
+ assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
+
+ for (int i = 0; i < allContexts->length(); i++) {
+ oop ref = allContexts->obj_at(i);
+ if (ref != NULL) {
+ oop referent = java_lang_ref_Reference::referent(ref);
+ if (referent != NULL) {
+ // Chunked Object[] with last element pointing to next chunk
+ objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
+ while (metadataRoots != NULL) {
+ for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
+ oop reference = metadataRoots->obj_at(typeIndex);
+ if (reference == NULL) {
+ continue;
+ }
+ oop metadataRoot = java_lang_ref_Reference::referent(reference);
+ if (metadataRoot == NULL) {
+ continue;
+ }
+ if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
+ Method* method = CompilerToVM::asMethod(metadataRoot);
+ f(method);
+ } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
+ ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
+ f(constantPool);
+ } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
+ Klass* klass = CompilerToVM::asKlass(metadataRoot);
+ f(klass);
+ } else {
+ metadataRoot->print();
+ ShouldNotReachHere();
+ }
+ }
+ metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
+ assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
+ }
+ }
+ }
+ }
+}
+
+// private static void CompilerToVM.registerNatives()
+JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
+ if (!EnableJVMCI) {
+ THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
+ }
+
+#ifdef _LP64
+ uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
+ uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
+ guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
+#else
+ fatal("check TLAB allocation code for address space conflicts");
+#endif
+
+ JVMCIRuntime::initialize_well_known_classes(CHECK);
+
+ {
+ ThreadToNativeFromVM trans(thread);
+
+ // Ensure _non_oop_bits is initialized
+ Universe::non_oop_word();
+
+ env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
+ }
+JVM_END
+
+/**
+ * Closure for parsing a line from a *.properties file in jre/lib/jvmci/properties.
+ * The line must match the regular expression "[^=]+=.*". That is one or more
+ * characters other than '=' followed by '=' followed by zero or more characters.
+ * Everything before the '=' is the property name and everything after '=' is the value.
+ * Lines that start with '#' are treated as comments and ignored.
+ * No special processing of whitespace or any escape characters is performed.
+ * The last definition of a property "wins" (i.e., it overrides all earlier
+ * definitions of the property).
+ */
+class JVMCIPropertiesFileClosure : public ParseClosure {
+ SystemProperty** _plist;
+public:
+ JVMCIPropertiesFileClosure(SystemProperty** plist) : _plist(plist) {}
+ void do_line(char* line) {
+ if (line[0] == '#') {
+ // skip comment
+ return;
+ }
+ size_t len = strlen(line);
+ char* sep = strchr(line, '=');
+ if (sep == NULL) {
+ warn_and_abort("invalid format: could not find '=' character");
+ return;
+ }
+ if (sep == line) {
+ warn_and_abort("invalid format: name cannot be empty");
+ return;
+ }
+ *sep = '\0';
+ const char* name = line;
+ char* value = sep + 1;
+ Arguments::PropertyList_unique_add(_plist, name, value);
+ }
+};
+
+void JVMCIRuntime::init_system_properties(SystemProperty** plist) {
+ char jvmciDir[JVM_MAXPATHLEN];
+ const char* fileSep = os::file_separator();
+ jio_snprintf(jvmciDir, sizeof(jvmciDir), "%s%slib%sjvmci",
+ Arguments::get_java_home(), fileSep, fileSep, fileSep);
+ DIR* dir = os::opendir(jvmciDir);
+ if (dir != NULL) {
+ struct dirent *entry;
+ char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(jvmciDir), mtInternal);
+ JVMCIPropertiesFileClosure closure(plist);
+ const unsigned suffix_len = (unsigned)strlen(".properties");
+ while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) {
+ const char* name = entry->d_name;
+ if (strlen(name) > suffix_len && strcmp(name + strlen(name) - suffix_len, ".properties") == 0) {
+ char propertiesFilePath[JVM_MAXPATHLEN];
+ jio_snprintf(propertiesFilePath, sizeof(propertiesFilePath), "%s%s%s",jvmciDir, fileSep, name);
+ JVMCIRuntime::parse_lines(propertiesFilePath, &closure, false);
+ }
+ }
+ FREE_C_HEAP_ARRAY(char, dbuf);
+ os::closedir(dir);
+ }
+}
+
+#define CHECK_WARN_ABORT_(message) THREAD); \
+ if (HAS_PENDING_EXCEPTION) { \
+ warning(message); \
+ char buf[512]; \
+ jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
+ JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \
+ return; \
+ } \
+ (void)(0
+
+void JVMCIRuntime::save_compiler(const char* compiler) {
+ assert(compiler != NULL, "npe");
+ assert(_compiler == NULL, "cannot reassign JVMCI compiler");
+ _compiler = compiler;
+}
+
+jint JVMCIRuntime::save_options(SystemProperty* props) {
+ int count = 0;
+ SystemProperty* first = NULL;
+ for (SystemProperty* p = props; p != NULL; p = p->next()) {
+ if (strncmp(p->key(), OPTION_PREFIX, OPTION_PREFIX_LEN) == 0) {
+ if (p->value() == NULL || strlen(p->value()) == 0) {
+ jio_fprintf(defaultStream::output_stream(), "JVMCI option %s must have non-zero length value\n", p->key());
+ return JNI_ERR;
+ }
+ if (first == NULL) {
+ first = p;
+ }
+ count++;
+ }
+ }
+ if (count != 0) {
+ _options_count = count;
+ _options = NEW_C_HEAP_ARRAY(SystemProperty*, count, mtCompiler);
+ _options[0] = first;
+ SystemProperty** insert_pos = _options + 1;
+ for (SystemProperty* p = first->next(); p != NULL; p = p->next()) {
+ if (strncmp(p->key(), OPTION_PREFIX, OPTION_PREFIX_LEN) == 0) {
+ *insert_pos = p;
+ insert_pos++;
+ }
+ }
+ assert (insert_pos - _options == count, "must be");
+ }
+ return JNI_OK;
+}
+
+void JVMCIRuntime::shutdown() {
+ if (_HotSpotJVMCIRuntime_instance != NULL) {
+ _shutdown_called = true;
+ JavaThread* THREAD = JavaThread::current();
+ HandleMark hm(THREAD);
+ Handle receiver = get_HotSpotJVMCIRuntime(CHECK_ABORT);
+ JavaValue result(T_VOID);
+ JavaCallArguments args;
+ args.push_oop(receiver);
+ JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT);
+ }
+}
+
+void JVMCIRuntime::call_printStackTrace(Handle exception, Thread* thread) {
+ assert(exception->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
+ JavaValue result(T_VOID);
+ JavaCalls::call_virtual(&result,
+ exception,
+ KlassHandle(thread,
+ SystemDictionary::Throwable_klass()),
+ vmSymbols::printStackTrace_name(),
+ vmSymbols::void_method_signature(),
+ thread);
+}
+
+void JVMCIRuntime::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) {
+ Thread* THREAD = Thread::current();
+ CLEAR_PENDING_EXCEPTION;
+ tty->print_raw_cr(message);
+ call_printStackTrace(exception, THREAD);
+
+ // Give other aborting threads to also print their stack traces.
+ // This can be very useful when debugging class initialization
+ // failures.
+ os::sleep(THREAD, 200, false);
+
+ vm_abort(dump_core);
+}
+
+void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) {
+ struct stat st;
+ if (os::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file
+ int file_handle = os::open(path, 0, 0);
+ if (file_handle != -1) {
+ char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal);
+ int num_read;
+ num_read = (int) os::read(file_handle, (char*) buffer, st.st_size);
+ if (num_read == -1) {
+ warning("Error reading file %s due to %s", path, strerror(errno));
+ } else if (num_read != st.st_size) {
+ warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path);
+ }
+ os::close(file_handle);
+ closure->set_filename(path);
+ if (num_read == st.st_size) {
+ buffer[num_read] = '\0';
+
+ char* line = buffer;
+ while (line - buffer < num_read && !closure->is_aborted()) {
+ // find line end (\r, \n or \r\n)
+ char* nextline = NULL;
+ char* cr = strchr(line, '\r');
+ char* lf = strchr(line, '\n');
+ if (cr != NULL && lf != NULL) {
+ char* min = MIN2(cr, lf);
+ *min = '\0';
+ if (lf == cr + 1) {
+ nextline = lf + 1;
+ } else {
+ nextline = min + 1;
+ }
+ } else if (cr != NULL) {
+ *cr = '\0';
+ nextline = cr + 1;
+ } else if (lf != NULL) {
+ *lf = '\0';
+ nextline = lf + 1;
+ }
+ // trim left
+ while (*line == ' ' || *line == '\t') line++;
+ char* end = line + strlen(line);
+ // trim right
+ while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--;
+ *end = '\0';
+ // skip comments and empty lines
+ if (*line != '#' && strlen(line) > 0) {
+ closure->parse_line(line);
+ }
+ if (nextline != NULL) {
+ line = nextline;
+ } else {
+ // File without newline at the end
+ break;
+ }
+ }
+ }
+ FREE_C_HEAP_ARRAY(char, buffer);
+ } else {
+ warning("Error opening file %s due to %s", path, strerror(errno));
+ }
+ } else if (warnStatFailure) {
+ warning("Could not stat file %s due to %s", path, strerror(errno));
+ }
+}