author | eosterlund |
Fri, 11 Jan 2019 13:15:37 +0100 | |
changeset 53282 | cb7fff9105a8 |
parent 52781 | 436097b038a1 |
child 53293 | 64049c8e7452 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef SHARE_VM_CODE_NMETHOD_HPP |
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#define SHARE_VM_CODE_NMETHOD_HPP |
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||
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#include "code/compiledMethod.hpp" |
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class DepChange; |
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class DirectiveSet; |
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// nmethods (native methods) are the compiled code versions of Java methods. |
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// |
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// An nmethod contains: |
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// - header (the nmethod structure) |
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// [Relocation] |
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// - relocation information |
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// - constant part (doubles, longs and floats used in nmethod) |
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// - oop table |
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// [Code] |
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// - code body |
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// - exception handler |
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// - stub code |
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// [Debugging information] |
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// - oop array |
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// - data array |
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// - pcs |
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// [Exception handler table] |
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// - handler entry point array |
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// [Implicit Null Pointer exception table] |
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// - implicit null table array |
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class nmethod : public CompiledMethod { |
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friend class VMStructs; |
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friend class JVMCIVMStructs; |
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friend class NMethodSweeper; |
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friend class CodeCache; // scavengable oops |
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private: |
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// Shared fields for all nmethod's |
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int _entry_bci; // != InvocationEntryBci if this nmethod is an on-stack replacement method |
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jmethodID _jmethod_id; // Cache of method()->jmethod_id() |
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#if INCLUDE_JVMCI |
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// A weak reference to an InstalledCode object associated with |
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// this nmethod. |
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jweak _jvmci_installed_code; |
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|
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// A weak reference to a SpeculationLog object associated with |
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// this nmethod. |
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jweak _speculation_log; |
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|
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// Determines whether this nmethod is unloaded when the |
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// referent in _jvmci_installed_code is cleared. This |
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// will be false if the referent is initialized to a |
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// HotSpotNMethod object whose isDefault field is true. |
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// That is, installed code other than a "default" |
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// HotSpotNMethod causes nmethod unloading. |
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// This field is ignored once _jvmci_installed_code is NULL. |
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bool _jvmci_installed_code_triggers_invalidation; |
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#endif |
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// To support simple linked-list chaining of nmethods: |
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nmethod* _osr_link; // from InstanceKlass::osr_nmethods_head |
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static nmethod* volatile _oops_do_mark_nmethods; |
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nmethod* volatile _oops_do_mark_link; |
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// offsets for entry points |
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address _entry_point; // entry point with class check |
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address _verified_entry_point; // entry point without class check |
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address _osr_entry_point; // entry point for on stack replacement |
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// Offsets for different nmethod parts |
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int _exception_offset; |
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// Offset of the unwind handler if it exists |
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int _unwind_handler_offset; |
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int _consts_offset; |
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int _stub_offset; |
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int _oops_offset; // offset to where embedded oop table begins (inside data) |
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int _metadata_offset; // embedded meta data table |
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int _scopes_data_offset; |
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int _scopes_pcs_offset; |
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int _dependencies_offset; |
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int _handler_table_offset; |
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int _nul_chk_table_offset; |
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int _nmethod_end_offset; |
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int code_offset() const { return (address) code_begin() - header_begin(); } |
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// location in frame (offset for sp) that deopt can store the original |
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// pc during a deopt. |
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int _orig_pc_offset; |
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int _compile_id; // which compilation made this nmethod |
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int _comp_level; // compilation level |
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// protected by CodeCache_lock |
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bool _has_flushed_dependencies; // Used for maintenance of dependencies (CodeCache_lock) |
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|
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// used by jvmti to track if an unload event has been posted for this nmethod. |
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bool _unload_reported; |
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// Protected by Patching_lock |
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volatile signed char _state; // {not_installed, in_use, not_entrant, zombie, unloaded} |
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#ifdef ASSERT |
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bool _oops_are_stale; // indicates that it's no longer safe to access oops section |
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#endif |
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jbyte _scavenge_root_state; |
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#if INCLUDE_RTM_OPT |
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// RTM state at compile time. Used during deoptimization to decide |
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// whether to restart collecting RTM locking abort statistic again. |
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RTMState _rtm_state; |
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#endif |
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// Nmethod Flushing lock. If non-zero, then the nmethod is not removed |
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// and is not made into a zombie. However, once the nmethod is made into |
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// a zombie, it will be locked one final time if CompiledMethodUnload |
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// event processing needs to be done. |
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volatile jint _lock_count; |
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// not_entrant method removal. Each mark_sweep pass will update |
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// this mark to current sweep invocation count if it is seen on the |
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// stack. An not_entrant method can be removed when there are no |
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// more activations, i.e., when the _stack_traversal_mark is less than |
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// current sweep traversal index. |
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volatile long _stack_traversal_mark; |
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// The _hotness_counter indicates the hotness of a method. The higher |
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// the value the hotter the method. The hotness counter of a nmethod is |
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// set to [(ReservedCodeCacheSize / (1024 * 1024)) * 2] each time the method |
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// is active while stack scanning (mark_active_nmethods()). The hotness |
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// counter is decreased (by 1) while sweeping. |
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int _hotness_counter; |
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// Local state used to keep track of whether unloading is happening or not |
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volatile uint8_t _is_unloading_state; |
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163 |
|
7444 | 164 |
// These are used for compiled synchronized native methods to |
1 | 165 |
// locate the owner and stack slot for the BasicLock so that we can |
166 |
// properly revoke the bias of the owner if necessary. They are |
|
167 |
// needed because there is no debug information for compiled native |
|
168 |
// wrappers and the oop maps are insufficient to allow |
|
169 |
// frame::retrieve_receiver() to work. Currently they are expected |
|
170 |
// to be byte offsets from the Java stack pointer for maximum code |
|
171 |
// sharing between platforms. Note that currently biased locking |
|
172 |
// will never cause Class instances to be biased but this code |
|
173 |
// handles the static synchronized case as well. |
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7444 | 174 |
// JVMTI's GetLocalInstance() also uses these offsets to find the receiver |
175 |
// for non-static native wrapper frames. |
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176 |
ByteSize _native_receiver_sp_offset; |
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177 |
ByteSize _native_basic_lock_sp_offset; |
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1 | 178 |
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179 |
friend class nmethodLocker; |
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180 |
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// For native wrappers |
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nmethod(Method* method, |
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CompilerType type, |
1 | 184 |
int nmethod_size, |
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int compile_id, |
1 | 186 |
CodeOffsets* offsets, |
187 |
CodeBuffer *code_buffer, |
|
188 |
int frame_size, |
|
189 |
ByteSize basic_lock_owner_sp_offset, /* synchronized natives only */ |
|
190 |
ByteSize basic_lock_sp_offset, /* synchronized natives only */ |
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191 |
OopMapSet* oop_maps); |
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192 |
||
193 |
// Creation support |
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nmethod(Method* method, |
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CompilerType type, |
1 | 196 |
int nmethod_size, |
197 |
int compile_id, |
|
198 |
int entry_bci, |
|
199 |
CodeOffsets* offsets, |
|
200 |
int orig_pc_offset, |
|
201 |
DebugInformationRecorder *recorder, |
|
202 |
Dependencies* dependencies, |
|
203 |
CodeBuffer *code_buffer, |
|
204 |
int frame_size, |
|
205 |
OopMapSet* oop_maps, |
|
206 |
ExceptionHandlerTable* handler_table, |
|
207 |
ImplicitExceptionTable* nul_chk_table, |
|
208 |
AbstractCompiler* compiler, |
|
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int comp_level |
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210 |
#if INCLUDE_JVMCI |
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, jweak installed_code, |
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jweak speculation_log |
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213 |
#endif |
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214 |
); |
1 | 215 |
|
216 |
// helper methods |
|
26796 | 217 |
void* operator new(size_t size, int nmethod_size, int comp_level) throw(); |
1 | 218 |
|
219 |
const char* reloc_string_for(u_char* begin, u_char* end); |
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// Returns true if this thread changed the state of the nmethod or |
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// false if another thread performed the transition. |
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bool make_not_entrant_or_zombie(int state); |
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223 |
bool make_entrant() { Unimplemented(); return false; } |
1 | 224 |
void inc_decompile_count(); |
225 |
||
226 |
// Inform external interfaces that a compiled method has been unloaded |
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void post_compiled_method_unload(); |
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228 |
|
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229 |
// Initailize fields to their default values |
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230 |
void init_defaults(); |
1 | 231 |
|
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232 |
// Offsets |
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int content_offset() const { return content_begin() - header_begin(); } |
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int data_offset() const { return _data_offset; } |
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235 |
|
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address header_end() const { return (address) header_begin() + header_size(); } |
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237 |
|
1 | 238 |
public: |
239 |
// create nmethod with entry_bci |
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240 |
static nmethod* new_nmethod(const methodHandle& method, |
1 | 241 |
int compile_id, |
242 |
int entry_bci, |
|
243 |
CodeOffsets* offsets, |
|
244 |
int orig_pc_offset, |
|
245 |
DebugInformationRecorder* recorder, |
|
246 |
Dependencies* dependencies, |
|
247 |
CodeBuffer *code_buffer, |
|
248 |
int frame_size, |
|
249 |
OopMapSet* oop_maps, |
|
250 |
ExceptionHandlerTable* handler_table, |
|
251 |
ImplicitExceptionTable* nul_chk_table, |
|
252 |
AbstractCompiler* compiler, |
|
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253 |
int comp_level |
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254 |
#if INCLUDE_JVMCI |
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, jweak installed_code = NULL, |
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256 |
jweak speculation_log = NULL |
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257 |
#endif |
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258 |
); |
1 | 259 |
|
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260 |
// Only used for unit tests. |
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261 |
nmethod() |
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262 |
: CompiledMethod(), |
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263 |
_is_unloading_state(0), |
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_native_receiver_sp_offset(in_ByteSize(-1)), |
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_native_basic_lock_sp_offset(in_ByteSize(-1)) {} |
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266 |
|
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|
267 |
|
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268 |
static nmethod* new_native_nmethod(const methodHandle& method, |
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269 |
int compile_id, |
1 | 270 |
CodeBuffer *code_buffer, |
271 |
int vep_offset, |
|
272 |
int frame_complete, |
|
273 |
int frame_size, |
|
274 |
ByteSize receiver_sp_offset, |
|
275 |
ByteSize basic_lock_sp_offset, |
|
276 |
OopMapSet* oop_maps); |
|
277 |
||
278 |
// type info |
|
279 |
bool is_nmethod() const { return true; } |
|
280 |
bool is_osr_method() const { return _entry_bci != InvocationEntryBci; } |
|
281 |
||
282 |
// boundaries for different parts |
|
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address consts_begin () const { return header_begin() + _consts_offset ; } |
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address consts_end () const { return code_begin() ; } |
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address stub_begin () const { return header_begin() + _stub_offset ; } |
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286 |
address stub_end () const { return header_begin() + _oops_offset ; } |
4752 | 287 |
address exception_begin () const { return header_begin() + _exception_offset ; } |
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288 |
address unwind_handler_begin () const { return _unwind_handler_offset != -1 ? (header_begin() + _unwind_handler_offset) : NULL; } |
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289 |
oop* oops_begin () const { return (oop*) (header_begin() + _oops_offset) ; } |
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oop* oops_end () const { return (oop*) (header_begin() + _metadata_offset) ; } |
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291 |
|
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292 |
Metadata** metadata_begin () const { return (Metadata**) (header_begin() + _metadata_offset) ; } |
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293 |
Metadata** metadata_end () const { return (Metadata**) _scopes_data_begin; } |
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294 |
|
4752 | 295 |
address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; } |
296 |
PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); } |
|
297 |
PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset) ; } |
|
298 |
address dependencies_begin () const { return header_begin() + _dependencies_offset ; } |
|
299 |
address dependencies_end () const { return header_begin() + _handler_table_offset ; } |
|
300 |
address handler_table_begin () const { return header_begin() + _handler_table_offset ; } |
|
301 |
address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; } |
|
302 |
address nul_chk_table_begin () const { return header_begin() + _nul_chk_table_offset ; } |
|
303 |
address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; } |
|
1 | 304 |
|
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305 |
// Sizes |
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306 |
int oops_size () const { return (address) oops_end () - (address) oops_begin (); } |
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307 |
int metadata_size () const { return (address) metadata_end () - (address) metadata_begin (); } |
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308 |
int dependencies_size () const { return dependencies_end () - dependencies_begin (); } |
1 | 309 |
|
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|
310 |
int oops_count() const { assert(oops_size() % oopSize == 0, ""); return (oops_size() / oopSize) + 1; } |
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311 |
int metadata_count() const { assert(metadata_size() % wordSize == 0, ""); return (metadata_size() / wordSize) + 1; } |
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|
312 |
|
1 | 313 |
int total_size () const; |
314 |
||
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|
315 |
void dec_hotness_counter() { _hotness_counter--; } |
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|
316 |
void set_hotness_counter(int val) { _hotness_counter = val; } |
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|
317 |
int hotness_counter() const { return _hotness_counter; } |
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|
318 |
|
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|
319 |
// Containment |
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|
320 |
bool oops_contains (oop* addr) const { return oops_begin () <= addr && addr < oops_end (); } |
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321 |
bool metadata_contains (Metadata** addr) const { return metadata_begin () <= addr && addr < metadata_end (); } |
1 | 322 |
bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); } |
323 |
bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); } |
|
324 |
||
325 |
// entry points |
|
326 |
address entry_point() const { return _entry_point; } // normal entry point |
|
327 |
address verified_entry_point() const { return _verified_entry_point; } // if klass is correct |
|
328 |
||
329 |
// flag accessing and manipulation |
|
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|
330 |
bool is_not_installed() const { return _state == not_installed; } |
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|
331 |
bool is_in_use() const { return _state <= in_use; } |
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|
332 |
bool is_alive() const { return _state < zombie; } |
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|
333 |
bool is_not_entrant() const { return _state == not_entrant; } |
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|
334 |
bool is_zombie() const { return _state == zombie; } |
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|
335 |
bool is_unloaded() const { return _state == unloaded; } |
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|
336 |
|
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|
337 |
void clear_unloading_state(); |
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|
338 |
virtual bool is_unloading(); |
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|
339 |
virtual void do_unloading(bool unloading_occurred); |
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|
340 |
|
23491 | 341 |
#if INCLUDE_RTM_OPT |
342 |
// rtm state accessing and manipulating |
|
343 |
RTMState rtm_state() const { return _rtm_state; } |
|
344 |
void set_rtm_state(RTMState state) { _rtm_state = state; } |
|
345 |
#endif |
|
346 |
||
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|
347 |
void make_in_use() { _state = in_use; } |
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|
348 |
// Make the nmethod non entrant. The nmethod will continue to be |
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349 |
// alive. It is used when an uncommon trap happens. Returns true |
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|
350 |
// if this thread changed the state of the nmethod or false if |
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|
351 |
// another thread performed the transition. |
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|
352 |
bool make_not_entrant() { |
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|
353 |
assert(!method()->is_method_handle_intrinsic(), "Cannot make MH intrinsic not entrant"); |
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354 |
return make_not_entrant_or_zombie(not_entrant); |
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355 |
} |
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356 |
bool make_not_used() { return make_not_entrant(); } |
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|
357 |
bool make_zombie() { return make_not_entrant_or_zombie(zombie); } |
1 | 358 |
|
359 |
// used by jvmti to track if the unload event has been reported |
|
360 |
bool unload_reported() { return _unload_reported; } |
|
361 |
void set_unload_reported() { _unload_reported = true; } |
|
362 |
||
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363 |
int get_state() const { |
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|
364 |
return _state; |
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|
365 |
} |
1 | 366 |
|
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|
367 |
void make_unloaded(); |
1 | 368 |
|
369 |
bool has_dependencies() { return dependencies_size() != 0; } |
|
49890
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|
370 |
void flush_dependencies(bool delete_immediately); |
5924
dc9d04930c82
6965184: possible races in make_not_entrant_or_zombie
never
parents:
5896
diff
changeset
|
371 |
bool has_flushed_dependencies() { return _has_flushed_dependencies; } |
dc9d04930c82
6965184: possible races in make_not_entrant_or_zombie
never
parents:
5896
diff
changeset
|
372 |
void set_has_flushed_dependencies() { |
1 | 373 |
assert(!has_flushed_dependencies(), "should only happen once"); |
5924
dc9d04930c82
6965184: possible races in make_not_entrant_or_zombie
never
parents:
5896
diff
changeset
|
374 |
_has_flushed_dependencies = 1; |
1 | 375 |
} |
376 |
||
377 |
int comp_level() const { return _comp_level; } |
|
378 |
||
53282
cb7fff9105a8
8215754: ZGC: nmethod is not unlinked from Method before rendezvous handshake
eosterlund
parents:
52781
diff
changeset
|
379 |
void unlink_from_method(bool acquire_lock); |
cb7fff9105a8
8215754: ZGC: nmethod is not unlinked from Method before rendezvous handshake
eosterlund
parents:
52781
diff
changeset
|
380 |
|
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
381 |
// Support for oops in scopes and relocs: |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
382 |
// Note: index 0 is reserved for null. |
52411
35ebea32a23c
8212996: Use AS_NO_KEEPALIVE when accessing dead java.lang.invoke.CallSites during nmethod unloading
eosterlund
parents:
52385
diff
changeset
|
383 |
oop oop_at(int index) const; |
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
384 |
oop* oop_addr_at(int index) const { // for GC |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
385 |
// relocation indexes are biased by 1 (because 0 is reserved) |
35086
bbf32241d851
8072008: Emit direct call instead of linkTo* for recursive indy/MH.invoke* calls
vlivanov
parents:
34185
diff
changeset
|
386 |
assert(index > 0 && index <= oops_count(), "must be a valid non-zero index"); |
6268 | 387 |
assert(!_oops_are_stale, "oops are stale"); |
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
388 |
return &oops_begin()[index - 1]; |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
389 |
} |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
390 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
391 |
// Support for meta data in scopes and relocs: |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
392 |
// Note: index 0 is reserved for null. |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
393 |
Metadata* metadata_at(int index) const { return index == 0 ? NULL: *metadata_addr_at(index); } |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
394 |
Metadata** metadata_addr_at(int index) const { // for GC |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
395 |
// relocation indexes are biased by 1 (because 0 is reserved) |
35086
bbf32241d851
8072008: Emit direct call instead of linkTo* for recursive indy/MH.invoke* calls
vlivanov
parents:
34185
diff
changeset
|
396 |
assert(index > 0 && index <= metadata_count(), "must be a valid non-zero index"); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
397 |
return &metadata_begin()[index - 1]; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
398 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
399 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
400 |
void copy_values(GrowableArray<jobject>* oops); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
401 |
void copy_values(GrowableArray<Metadata*>* metadata); |
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
402 |
|
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
403 |
// Relocation support |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
404 |
private: |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
405 |
void fix_oop_relocations(address begin, address end, bool initialize_immediates); |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
406 |
inline void initialize_immediate_oop(oop* dest, jobject handle); |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
407 |
|
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
408 |
public: |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
409 |
void fix_oop_relocations(address begin, address end) { fix_oop_relocations(begin, end, false); } |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
410 |
void fix_oop_relocations() { fix_oop_relocations(NULL, NULL, false); } |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
411 |
|
9935
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
412 |
// Scavengable oop support |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
413 |
bool on_scavenge_root_list() const { return (_scavenge_root_state & 1) != 0; } |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
414 |
protected: |
9935
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
415 |
enum { sl_on_list = 0x01, sl_marked = 0x10 }; |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
416 |
void set_on_scavenge_root_list() { _scavenge_root_state = sl_on_list; } |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
417 |
void clear_on_scavenge_root_list() { _scavenge_root_state = 0; } |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
418 |
// assertion-checking and pruning logic uses the bits of _scavenge_root_state |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
419 |
#ifndef PRODUCT |
9935
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
420 |
void set_scavenge_root_marked() { _scavenge_root_state |= sl_marked; } |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
421 |
void clear_scavenge_root_marked() { _scavenge_root_state &= ~sl_marked; } |
51267b5e1a3d
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
8872
diff
changeset
|
422 |
bool scavenge_root_not_marked() { return (_scavenge_root_state &~ sl_on_list) == 0; } |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
423 |
// N.B. there is no positive marked query, and we only use the not_marked query for asserts. |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
424 |
#endif //PRODUCT |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
425 |
nmethod* scavenge_root_link() const { return _scavenge_root_link; } |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
426 |
void set_scavenge_root_link(nmethod *n) { _scavenge_root_link = n; } |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
427 |
|
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
428 |
public: |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
429 |
|
1 | 430 |
// Sweeper support |
47099
49f5fa3fc2ae
8186837: Memory ordering nmethod, _state and _stack_traversal_mark
rehn
parents:
46702
diff
changeset
|
431 |
long stack_traversal_mark() { return _stack_traversal_mark; } |
49f5fa3fc2ae
8186837: Memory ordering nmethod, _state and _stack_traversal_mark
rehn
parents:
46702
diff
changeset
|
432 |
void set_stack_traversal_mark(long l) { _stack_traversal_mark = l; } |
1 | 433 |
|
434 |
// implicit exceptions support |
|
435 |
address continuation_for_implicit_exception(address pc); |
|
436 |
||
437 |
// On-stack replacement support |
|
8872
36680c58660e
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
8724
diff
changeset
|
438 |
int osr_entry_bci() const { assert(is_osr_method(), "wrong kind of nmethod"); return _entry_bci; } |
36680c58660e
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
8724
diff
changeset
|
439 |
address osr_entry() const { assert(is_osr_method(), "wrong kind of nmethod"); return _osr_entry_point; } |
1 | 440 |
void invalidate_osr_method(); |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
441 |
nmethod* osr_link() const { return _osr_link; } |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
442 |
void set_osr_link(nmethod *n) { _osr_link = n; } |
1 | 443 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
444 |
// Verify calls to dead methods have been cleaned. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
445 |
void verify_clean_inline_caches(); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
446 |
|
1 | 447 |
// unlink and deallocate this nmethod |
448 |
// Only NMethodSweeper class is expected to use this. NMethodSweeper is not |
|
449 |
// expected to use any other private methods/data in this class. |
|
450 |
||
451 |
protected: |
|
452 |
void flush(); |
|
453 |
||
454 |
public: |
|
8661
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
455 |
// When true is returned, it is unsafe to remove this nmethod even if |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
456 |
// it is a zombie, since the VM or the ServiceThread might still be |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
457 |
// using it. |
1 | 458 |
bool is_locked_by_vm() const { return _lock_count >0; } |
459 |
||
460 |
// See comment at definition of _last_seen_on_stack |
|
461 |
void mark_as_seen_on_stack(); |
|
32466
915d0c3d25aa
8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper
thartmann
parents:
29576
diff
changeset
|
462 |
bool can_convert_to_zombie(); |
1 | 463 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
464 |
// Evolution support. We make old (discarded) compiled methods point to new Method*s. |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
465 |
void set_method(Method* method) { _method = method; } |
1 | 466 |
|
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32466
diff
changeset
|
467 |
#if INCLUDE_JVMCI |
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
468 |
// Gets the InstalledCode object associated with this nmethod |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
469 |
// which may be NULL if this nmethod was not compiled by JVMCI |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
470 |
// or the weak reference has been cleared. |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
471 |
oop jvmci_installed_code(); |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
472 |
|
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
473 |
// Copies the value of the name field in the InstalledCode |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
474 |
// object (if any) associated with this nmethod into buf. |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
475 |
// Returns the value of buf if it was updated otherwise NULL. |
51473
871581ff5ce5
8209624: [JVMCI] Invalidate nmethods instead of directly unloading them when the InstalledCode is dropped
never
parents:
50416
diff
changeset
|
476 |
char* jvmci_installed_code_name(char* buf, size_t buflen) const; |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
477 |
|
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
478 |
// Updates the state of the InstalledCode (if any) associated with |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
479 |
// this nmethod based on the current value of _state. |
33632 | 480 |
void maybe_invalidate_installed_code(); |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
481 |
|
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
482 |
// Deoptimizes the nmethod (if any) in the address field of a given |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
483 |
// InstalledCode object. The address field is zeroed upon return. |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
484 |
static void invalidate_installed_code(Handle installed_code, TRAPS); |
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
485 |
|
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
486 |
// Gets the SpeculationLog object associated with this nmethod |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
487 |
// which may be NULL if this nmethod was not compiled by JVMCI |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
488 |
// or the weak reference has been cleared. |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
489 |
oop speculation_log(); |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
490 |
|
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
491 |
private: |
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
492 |
// Deletes the weak reference (if any) to the InstalledCode object |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
493 |
// associated with this nmethod. |
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
494 |
void clear_jvmci_installed_code(); |
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
495 |
|
47794
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
496 |
// Deletes the weak reference (if any) to the SpeculationLog object |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
497 |
// associated with this nmethod. |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
498 |
void clear_speculation_log(); |
e84aa2c71241
8188102: [JVMCI] Convert special JVMCI oops in nmethod to jweak values
dnsimon
parents:
47216
diff
changeset
|
499 |
|
35092
82170e5767c3
8143571: [JVMCI] Double unregistering of nmethod during unloading
never
parents:
35086
diff
changeset
|
500 |
public: |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32466
diff
changeset
|
501 |
#endif |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32466
diff
changeset
|
502 |
|
27247
99db666dbe8e
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
stefank
parents:
26912
diff
changeset
|
503 |
public: |
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
504 |
void oops_do(OopClosure* f) { oops_do(f, false); } |
19339 | 505 |
void oops_do(OopClosure* f, bool allow_zombie); |
3908
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
506 |
bool detect_scavenge_root_oops(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
507 |
void verify_scavenge_root_oops() PRODUCT_RETURN; |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
508 |
|
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
509 |
bool test_set_oops_do_mark(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
510 |
static void oops_do_marking_prologue(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
511 |
static void oops_do_marking_epilogue(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
512 |
static bool oops_do_marking_is_active() { return _oops_do_mark_nmethods != NULL; } |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
11637
diff
changeset
|
513 |
bool test_oops_do_mark() { return _oops_do_mark_link != NULL; } |
1 | 514 |
|
515 |
private: |
|
516 |
ScopeDesc* scope_desc_in(address begin, address end); |
|
517 |
||
49480
d7df2dd501ce
8199809: Don't include frame.inline.hpp and other.inline.hpp from .hpp files
coleenp
parents:
48088
diff
changeset
|
518 |
address* orig_pc_addr(const frame* fr); |
1 | 519 |
|
520 |
public: |
|
521 |
// copying of debugging information |
|
522 |
void copy_scopes_pcs(PcDesc* pcs, int count); |
|
523 |
void copy_scopes_data(address buffer, int size); |
|
524 |
||
525 |
// Accessor/mutator for the original pc of a frame before a frame was deopted. |
|
526 |
address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); } |
|
527 |
void set_original_pc(const frame* fr, address pc) { *orig_pc_addr(fr) = pc; } |
|
528 |
||
529 |
// jvmti support: |
|
530 |
void post_compiled_method_load_event(); |
|
5896
c60924a89622
6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents:
5702
diff
changeset
|
531 |
jmethodID get_and_cache_jmethod_id(); |
1 | 532 |
|
533 |
// verify operations |
|
534 |
void verify(); |
|
535 |
void verify_scopes(); |
|
536 |
void verify_interrupt_point(address interrupt_point); |
|
537 |
||
538 |
// printing support |
|
347
df859fcca515
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
1
diff
changeset
|
539 |
void print() const; |
1 | 540 |
void print_relocations() PRODUCT_RETURN; |
541 |
void print_pcs() PRODUCT_RETURN; |
|
542 |
void print_scopes() PRODUCT_RETURN; |
|
543 |
void print_dependencies() PRODUCT_RETURN; |
|
544 |
void print_value_on(outputStream* st) const PRODUCT_RETURN; |
|
545 |
void print_calls(outputStream* st) PRODUCT_RETURN; |
|
546 |
void print_handler_table() PRODUCT_RETURN; |
|
547 |
void print_nul_chk_table() PRODUCT_RETURN; |
|
35086
bbf32241d851
8072008: Emit direct call instead of linkTo* for recursive indy/MH.invoke* calls
vlivanov
parents:
34185
diff
changeset
|
548 |
void print_recorded_oops() PRODUCT_RETURN; |
bbf32241d851
8072008: Emit direct call instead of linkTo* for recursive indy/MH.invoke* calls
vlivanov
parents:
34185
diff
changeset
|
549 |
void print_recorded_metadata() PRODUCT_RETURN; |
36078
954c49c0ba57
8149969: [JVMCI] PrintNMethods is ignored for CompilerToVM.installCode when not called from the broker
never
parents:
35542
diff
changeset
|
550 |
|
954c49c0ba57
8149969: [JVMCI] PrintNMethods is ignored for CompilerToVM.installCode when not called from the broker
never
parents:
35542
diff
changeset
|
551 |
void maybe_print_nmethod(DirectiveSet* directive); |
347
df859fcca515
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
1
diff
changeset
|
552 |
void print_nmethod(bool print_code); |
1 | 553 |
|
6176
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5924
diff
changeset
|
554 |
// need to re-define this from CodeBlob else the overload hides it |
4d9030fe341f
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
5924
diff
changeset
|
555 |
virtual void print_on(outputStream* st) const { CodeBlob::print_on(st); } |
8872
36680c58660e
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
8724
diff
changeset
|
556 |
void print_on(outputStream* st, const char* msg) const; |
1 | 557 |
|
558 |
// Logging |
|
559 |
void log_identity(xmlStream* log) const; |
|
560 |
void log_new_nmethod() const; |
|
52385
5c679ec60888
8209189: Make CompiledMethod::do_unloading more concurrent
eosterlund
parents:
51473
diff
changeset
|
561 |
void log_state_change() const; |
1 | 562 |
|
4584
e2a449e8cc6f
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
4570
diff
changeset
|
563 |
// Prints block-level comments, including nmethod specific block labels: |
13887
89b873bcc55b
7200163: add CodeComments functionality to assember stubs
kvn
parents:
13883
diff
changeset
|
564 |
virtual void print_block_comment(outputStream* stream, address block_begin) const { |
4584
e2a449e8cc6f
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
4570
diff
changeset
|
565 |
print_nmethod_labels(stream, block_begin); |
e2a449e8cc6f
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
4570
diff
changeset
|
566 |
CodeBlob::print_block_comment(stream, block_begin); |
e2a449e8cc6f
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
4570
diff
changeset
|
567 |
} |
13887
89b873bcc55b
7200163: add CodeComments functionality to assember stubs
kvn
parents:
13883
diff
changeset
|
568 |
void print_nmethod_labels(outputStream* stream, address block_begin) const; |
4584
e2a449e8cc6f
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
4570
diff
changeset
|
569 |
|
1 | 570 |
// Prints a comment for one native instruction (reloc info, pc desc) |
347
df859fcca515
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
1
diff
changeset
|
571 |
void print_code_comment_on(outputStream* st, int column, address begin, address end); |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32466
diff
changeset
|
572 |
static void print_statistics() PRODUCT_RETURN; |
1 | 573 |
|
574 |
// Compiler task identification. Note that all OSR methods |
|
575 |
// are numbered in an independent sequence if CICountOSR is true, |
|
576 |
// and native method wrappers are also numbered independently if |
|
577 |
// CICountNative is true. |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
578 |
virtual int compile_id() const { return _compile_id; } |
1 | 579 |
const char* compile_kind() const; |
580 |
||
581 |
// tells if any of this method's dependencies have been invalidated |
|
582 |
// (this is expensive!) |
|
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
22223
diff
changeset
|
583 |
static void check_all_dependencies(DepChange& changes); |
1 | 584 |
|
585 |
// tells if this compiled method is dependent on the given changes, |
|
586 |
// and the changes have invalidated it |
|
587 |
bool check_dependency_on(DepChange& changes); |
|
588 |
||
589 |
// Evolution support. Tells if this compiled method is dependent on any of |
|
590 |
// methods m() of class dependee, such that if m() in dependee is replaced, |
|
591 |
// this compiled method will have to be deoptimized. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
592 |
bool is_evol_dependent_on(Klass* dependee); |
1 | 593 |
|
594 |
// Fast breakpoint support. Tells if this compiled method is |
|
595 |
// dependent on the given method. Returns true if this nmethod |
|
596 |
// corresponds to the given method as well. |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
597 |
virtual bool is_dependent_on_method(Method* dependee); |
1 | 598 |
|
599 |
// is it ok to patch at address? |
|
600 |
bool is_patchable_at(address instr_address); |
|
601 |
||
602 |
// UseBiasedLocking support |
|
7444 | 603 |
ByteSize native_receiver_sp_offset() { |
604 |
return _native_receiver_sp_offset; |
|
1 | 605 |
} |
7444 | 606 |
ByteSize native_basic_lock_sp_offset() { |
607 |
return _native_basic_lock_sp_offset; |
|
1 | 608 |
} |
609 |
||
610 |
// support for code generation |
|
611 |
static int verified_entry_point_offset() { return offset_of(nmethod, _verified_entry_point); } |
|
612 |
static int osr_entry_point_offset() { return offset_of(nmethod, _osr_entry_point); } |
|
26705
fca1785e7084
8048721: -XX:+PrintCompilation prints negative bci for non entrant OSR methods
thartmann
parents:
26580
diff
changeset
|
613 |
static int state_offset() { return offset_of(nmethod, _state); } |
1 | 614 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
615 |
virtual void metadata_do(void f(Metadata*)); |
42650 | 616 |
|
617 |
NativeCallWrapper* call_wrapper_at(address call) const; |
|
618 |
NativeCallWrapper* call_wrapper_before(address return_pc) const; |
|
619 |
address call_instruction_address(address pc) const; |
|
620 |
||
621 |
virtual CompiledStaticCall* compiledStaticCall_at(Relocation* call_site) const; |
|
622 |
virtual CompiledStaticCall* compiledStaticCall_at(address addr) const; |
|
623 |
virtual CompiledStaticCall* compiledStaticCall_before(address addr) const; |
|
1 | 624 |
}; |
625 |
||
8661
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
626 |
// Locks an nmethod so its code will not get removed and it will not |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
627 |
// be made into a zombie, even if it is a not_entrant method. After the |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
628 |
// nmethod becomes a zombie, if CompiledMethodUnload event processing |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
629 |
// needs to be done, then lock_nmethod() is used directly to keep the |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
630 |
// generated code from being reused too early. |
1 | 631 |
class nmethodLocker : public StackObj { |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
632 |
CompiledMethod* _nm; |
1 | 633 |
|
8110
c992c8d52344
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
7444
diff
changeset
|
634 |
public: |
c992c8d52344
6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents:
7444
diff
changeset
|
635 |
|
8661
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
636 |
// note: nm can be NULL |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
637 |
// Only JvmtiDeferredEvent::compiled_method_unload_event() |
3dc8a18ac563
7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents:
8495
diff
changeset
|
638 |
// should pass zombie_ok == true. |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
639 |
static void lock_nmethod(CompiledMethod* nm, bool zombie_ok = false); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
640 |
static void unlock_nmethod(CompiledMethod* nm); // (ditto) |
1 | 641 |
|
642 |
nmethodLocker(address pc); // derive nm from pc |
|
643 |
nmethodLocker(nmethod *nm) { _nm = nm; lock_nmethod(_nm); } |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
644 |
nmethodLocker(CompiledMethod *nm) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
645 |
_nm = nm; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
646 |
lock(_nm); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
647 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
648 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
649 |
static void lock(CompiledMethod* method) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
650 |
if (method == NULL) return; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
651 |
lock_nmethod(method); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
652 |
} |
1 | 653 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
654 |
static void unlock(CompiledMethod* method) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
655 |
if (method == NULL) return; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
656 |
unlock_nmethod(method); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
657 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
658 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
659 |
nmethodLocker() { _nm = NULL; } |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
660 |
~nmethodLocker() { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
661 |
unlock(_nm); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
662 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
663 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
664 |
CompiledMethod* code() { return _nm; } |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
665 |
void set_code(CompiledMethod* new_nm) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
666 |
unlock(_nm); // note: This works even if _nm==new_nm. |
1 | 667 |
_nm = new_nm; |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
38043
diff
changeset
|
668 |
lock(_nm); |
1 | 669 |
} |
670 |
}; |
|
7397 | 671 |
|
672 |
#endif // SHARE_VM_CODE_NMETHOD_HPP |