jdk8-mips64-public/hotspot: src/share/vm/code/codeBlob.cpp@2a47bd84841f (annotated)

src/share/vm/code/codeBlob.cpp@2a47bd84841f (annotated)

src/share/vm/code/codeBlob.cpp

Thu, 08 Jul 2010 14:29:44 -0700

author: never
date: Thu, 08 Jul 2010 14:29:44 -0700
changeset 1999: 2a47bd84841f
parent 1934: e9ff18c4ace7
child 2018: 7139e81efd2d
permissions: -rw-r--r--

6965184: possible races in make_not_entrant_or_zombie
Reviewed-by: kvn

 /*
  * Copyright (c) 1998, 2010, 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 "incls/_precompiled.incl"
 # include "incls/_codeBlob.cpp.incl"
 unsigned int align_code_offset(int offset) {
   // align the size to CodeEntryAlignment
   return
     ((offset + (int)CodeHeap::header_size() + (CodeEntryAlignment-1)) & ~(CodeEntryAlignment-1))
     - (int)CodeHeap::header_size();
 }
 // This must be consistent with the CodeBlob constructor's layout actions.
 unsigned int CodeBlob::allocation_size(CodeBuffer* cb, int header_size) {
   unsigned int size = header_size;
   size += round_to(cb->total_relocation_size(), oopSize);
   // align the size to CodeEntryAlignment
   size = align_code_offset(size);
   size += round_to(cb->total_code_size(), oopSize);
   size += round_to(cb->total_oop_size(), oopSize);
   return size;
 }
 // Creates a simple CodeBlob. Sets up the size of the different regions.
 CodeBlob::CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size) {
   assert(size == round_to(size, oopSize), "unaligned size");
   assert(locs_size == round_to(locs_size, oopSize), "unaligned size");
   assert(header_size == round_to(header_size, oopSize), "unaligned size");
   assert(!UseRelocIndex, "no space allocated for reloc index yet");
   // Note: If UseRelocIndex is enabled, there needs to be (at least) one
   //       extra word for the relocation information, containing the reloc
   //       index table length. Unfortunately, the reloc index table imple-
   //       mentation is not easily understandable and thus it is not clear
   //       what exactly the format is supposed to be. For now, we just turn
   //       off the use of this table (gri 7/6/2000).
   _name                  = name;
   _size                  = size;
   _frame_complete_offset = frame_complete;
   _header_size           = header_size;
   _relocation_size       = locs_size;
   _instructions_offset   = align_code_offset(header_size + locs_size);
   _data_offset           = size;
   _frame_size            =  0;
   set_oop_maps(NULL);
 }
 // Creates a CodeBlob from a CodeBuffer. Sets up the size of the different regions,
 // and copy code and relocation info.
 CodeBlob::CodeBlob(
   const char* name,
   CodeBuffer* cb,
   int         header_size,
   int         size,
   int         frame_complete,
   int         frame_size,
   OopMapSet*  oop_maps
 ) {
   assert(size == round_to(size, oopSize), "unaligned size");
   assert(header_size == round_to(header_size, oopSize), "unaligned size");
   _name                  = name;
   _size                  = size;
   _frame_complete_offset = frame_complete;
   _header_size           = header_size;
   _relocation_size       = round_to(cb->total_relocation_size(), oopSize);
   _instructions_offset   = align_code_offset(header_size + _relocation_size);
   _data_offset           = _instructions_offset + round_to(cb->total_code_size(), oopSize);
   assert(_data_offset <= size, "codeBlob is too small");
   cb->copy_code_and_locs_to(this);
   set_oop_maps(oop_maps);
   _frame_size = frame_size;
 #ifdef COMPILER1
   // probably wrong for tiered
   assert(_frame_size >= -1, "must use frame size or -1 for runtime stubs");
 #endif // COMPILER1
 }
 void CodeBlob::set_oop_maps(OopMapSet* p) {
   // Danger Will Robinson! This method allocates a big
   // chunk of memory, its your job to free it.
   if (p != NULL) {
     // We need to allocate a chunk big enough to hold the OopMapSet and all of its OopMaps
     _oop_maps = (OopMapSet* )NEW_C_HEAP_ARRAY(unsigned char, p->heap_size());
     p->copy_to((address)_oop_maps);
   } else {
     _oop_maps = NULL;
   }
 }
 void CodeBlob::flush() {
   if (_oop_maps) {
     FREE_C_HEAP_ARRAY(unsigned char, _oop_maps);
     _oop_maps = NULL;
   }
   _comments.free();
 }
 OopMap* CodeBlob::oop_map_for_return_address(address return_address) {
   address pc = return_address ;
   assert (oop_maps() != NULL, "nope");
   return oop_maps()->find_map_at_offset ((intptr_t) pc - (intptr_t) instructions_begin());
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of BufferBlob
 BufferBlob::BufferBlob(const char* name, int size)
 : CodeBlob(name, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, /*locs_size:*/ 0)
 {}
 BufferBlob* BufferBlob::create(const char* name, int buffer_size) {
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   BufferBlob* blob = NULL;
   unsigned int size = sizeof(BufferBlob);
   // align the size to CodeEntryAlignment
   size = align_code_offset(size);
   size += round_to(buffer_size, oopSize);
   assert(name != NULL, "must provide a name");
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     blob = new (size) BufferBlob(name, size);
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 BufferBlob::BufferBlob(const char* name, int size, CodeBuffer* cb)
   : CodeBlob(name, cb, sizeof(BufferBlob), size, CodeOffsets::frame_never_safe, 0, NULL)
 {}
 BufferBlob* BufferBlob::create(const char* name, CodeBuffer* cb) {
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   BufferBlob* blob = NULL;
   unsigned int size = allocation_size(cb, sizeof(BufferBlob));
   assert(name != NULL, "must provide a name");
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     blob = new (size) BufferBlob(name, size, cb);
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 void* BufferBlob::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   return p;
 }
 void BufferBlob::free( BufferBlob *blob ) {
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     CodeCache::free((CodeBlob*)blob);
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of AdapterBlob
 AdapterBlob* AdapterBlob::create(CodeBuffer* cb) {
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   AdapterBlob* blob = NULL;
   unsigned int size = allocation_size(cb, sizeof(AdapterBlob));
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     blob = new (size) AdapterBlob(size, cb);
     CodeCache::commit(blob);
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of MethodHandlesAdapterBlob
 MethodHandlesAdapterBlob* MethodHandlesAdapterBlob::create(int buffer_size) {
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   MethodHandlesAdapterBlob* blob = NULL;
   unsigned int size = sizeof(MethodHandlesAdapterBlob);
   // align the size to CodeEntryAlignment
   size = align_code_offset(size);
   size += round_to(buffer_size, oopSize);
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     blob = new (size) MethodHandlesAdapterBlob(size);
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of RuntimeStub
 RuntimeStub::RuntimeStub(
   const char* name,
   CodeBuffer* cb,
   int         size,
   int         frame_complete,
   int         frame_size,
   OopMapSet*  oop_maps,
   bool        caller_must_gc_arguments
 )
 : CodeBlob(name, cb, sizeof(RuntimeStub), size, frame_complete, frame_size, oop_maps)
 {
   _caller_must_gc_arguments = caller_must_gc_arguments;
 }
 RuntimeStub* RuntimeStub::new_runtime_stub(const char* stub_name,
                                            CodeBuffer* cb,
                                            int frame_complete,
                                            int frame_size,
                                            OopMapSet* oop_maps,
                                            bool caller_must_gc_arguments)
 {
   RuntimeStub* stub = NULL;
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     unsigned int size = allocation_size(cb, sizeof(RuntimeStub));
     stub = new (size) RuntimeStub(stub_name, cb, size, frame_complete, frame_size, oop_maps, caller_must_gc_arguments);
   }
   // Do not hold the CodeCache lock during name formatting.
   if (stub != NULL) {
     char stub_id[256];
     jio_snprintf(stub_id, sizeof(stub_id), "RuntimeStub - %s", stub_name);
     if (PrintStubCode) {
       tty->print_cr("Decoding %s " INTPTR_FORMAT, stub_id, stub);
       Disassembler::decode(stub->instructions_begin(), stub->instructions_end());
     }
     Forte::register_stub(stub_id, stub->instructions_begin(), stub->instructions_end());
     if (JvmtiExport::should_post_dynamic_code_generated()) {
       JvmtiExport::post_dynamic_code_generated(stub_name, stub->instructions_begin(), stub->instructions_end());
     }
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return stub;
 }
 void* RuntimeStub::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   if (!p) fatal("Initial size of CodeCache is too small");
   return p;
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of DeoptimizationBlob
 DeoptimizationBlob::DeoptimizationBlob(
   CodeBuffer* cb,
   int         size,
   OopMapSet*  oop_maps,
   int         unpack_offset,
   int         unpack_with_exception_offset,
   int         unpack_with_reexecution_offset,
   int         frame_size
 )
 : SingletonBlob("DeoptimizationBlob", cb, sizeof(DeoptimizationBlob), size, frame_size, oop_maps)
 {
   _unpack_offset           = unpack_offset;
   _unpack_with_exception   = unpack_with_exception_offset;
   _unpack_with_reexecution = unpack_with_reexecution_offset;
 #ifdef COMPILER1
   _unpack_with_exception_in_tls   = -1;
 #endif
 }
 DeoptimizationBlob* DeoptimizationBlob::create(
   CodeBuffer* cb,
   OopMapSet*  oop_maps,
   int        unpack_offset,
   int        unpack_with_exception_offset,
   int        unpack_with_reexecution_offset,
   int        frame_size)
 {
   DeoptimizationBlob* blob = NULL;
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     unsigned int size = allocation_size(cb, sizeof(DeoptimizationBlob));
     blob = new (size) DeoptimizationBlob(cb,
                                          size,
                                          oop_maps,
                                          unpack_offset,
                                          unpack_with_exception_offset,
                                          unpack_with_reexecution_offset,
                                          frame_size);
   }
   // Do not hold the CodeCache lock during name formatting.
   if (blob != NULL) {
     char blob_id[256];
     jio_snprintf(blob_id, sizeof(blob_id), "DeoptimizationBlob@" PTR_FORMAT, blob->instructions_begin());
     if (PrintStubCode) {
       tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob);
       Disassembler::decode(blob->instructions_begin(), blob->instructions_end());
     }
     Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end());
     if (JvmtiExport::should_post_dynamic_code_generated()) {
       JvmtiExport::post_dynamic_code_generated("DeoptimizationBlob",
                                                blob->instructions_begin(),
                                                blob->instructions_end());
     }
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 void* DeoptimizationBlob::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   if (!p) fatal("Initial size of CodeCache is too small");
   return p;
 }
 //----------------------------------------------------------------------------------------------------
 // Implementation of UncommonTrapBlob
 #ifdef COMPILER2
 UncommonTrapBlob::UncommonTrapBlob(
   CodeBuffer* cb,
   int         size,
   OopMapSet*  oop_maps,
   int         frame_size
 )
 : SingletonBlob("UncommonTrapBlob", cb, sizeof(UncommonTrapBlob), size, frame_size, oop_maps)
 {}
 UncommonTrapBlob* UncommonTrapBlob::create(
   CodeBuffer* cb,
   OopMapSet*  oop_maps,
   int        frame_size)
 {
   UncommonTrapBlob* blob = NULL;
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     unsigned int size = allocation_size(cb, sizeof(UncommonTrapBlob));
     blob = new (size) UncommonTrapBlob(cb, size, oop_maps, frame_size);
   }
   // Do not hold the CodeCache lock during name formatting.
   if (blob != NULL) {
     char blob_id[256];
     jio_snprintf(blob_id, sizeof(blob_id), "UncommonTrapBlob@" PTR_FORMAT, blob->instructions_begin());
     if (PrintStubCode) {
       tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob);
       Disassembler::decode(blob->instructions_begin(), blob->instructions_end());
     }
     Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end());
     if (JvmtiExport::should_post_dynamic_code_generated()) {
       JvmtiExport::post_dynamic_code_generated("UncommonTrapBlob",
                                                blob->instructions_begin(),
                                                blob->instructions_end());
     }
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 void* UncommonTrapBlob::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   if (!p) fatal("Initial size of CodeCache is too small");
   return p;
 }
 #endif // COMPILER2
 //----------------------------------------------------------------------------------------------------
 // Implementation of ExceptionBlob
 #ifdef COMPILER2
 ExceptionBlob::ExceptionBlob(
   CodeBuffer* cb,
   int         size,
   OopMapSet*  oop_maps,
   int         frame_size
 )
 : SingletonBlob("ExceptionBlob", cb, sizeof(ExceptionBlob), size, frame_size, oop_maps)
 {}
 ExceptionBlob* ExceptionBlob::create(
   CodeBuffer* cb,
   OopMapSet*  oop_maps,
   int         frame_size)
 {
   ExceptionBlob* blob = NULL;
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     unsigned int size = allocation_size(cb, sizeof(ExceptionBlob));
     blob = new (size) ExceptionBlob(cb, size, oop_maps, frame_size);
   }
   // We do not need to hold the CodeCache lock during name formatting
   if (blob != NULL) {
     char blob_id[256];
     jio_snprintf(blob_id, sizeof(blob_id), "ExceptionBlob@" PTR_FORMAT, blob->instructions_begin());
     if (PrintStubCode) {
       tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob);
       Disassembler::decode(blob->instructions_begin(), blob->instructions_end());
     }
     Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end());
     if (JvmtiExport::should_post_dynamic_code_generated()) {
       JvmtiExport::post_dynamic_code_generated("ExceptionBlob",
                                                blob->instructions_begin(),
                                                blob->instructions_end());
     }
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 void* ExceptionBlob::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   if (!p) fatal("Initial size of CodeCache is too small");
   return p;
 }
 #endif // COMPILER2
 //----------------------------------------------------------------------------------------------------
 // Implementation of SafepointBlob
 SafepointBlob::SafepointBlob(
   CodeBuffer* cb,
   int         size,
   OopMapSet*  oop_maps,
   int         frame_size
 )
 : SingletonBlob("SafepointBlob", cb, sizeof(SafepointBlob), size, frame_size, oop_maps)
 {}
 SafepointBlob* SafepointBlob::create(
   CodeBuffer* cb,
   OopMapSet*  oop_maps,
   int         frame_size)
 {
   SafepointBlob* blob = NULL;
   ThreadInVMfromUnknown __tiv;  // get to VM state in case we block on CodeCache_lock
   {
     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     unsigned int size = allocation_size(cb, sizeof(SafepointBlob));
     blob = new (size) SafepointBlob(cb, size, oop_maps, frame_size);
   }
   // We do not need to hold the CodeCache lock during name formatting.
   if (blob != NULL) {
     char blob_id[256];
     jio_snprintf(blob_id, sizeof(blob_id), "SafepointBlob@" PTR_FORMAT, blob->instructions_begin());
     if (PrintStubCode) {
       tty->print_cr("Decoding %s " INTPTR_FORMAT, blob_id, blob);
       Disassembler::decode(blob->instructions_begin(), blob->instructions_end());
     }
     Forte::register_stub(blob_id, blob->instructions_begin(), blob->instructions_end());
     if (JvmtiExport::should_post_dynamic_code_generated()) {
       JvmtiExport::post_dynamic_code_generated("SafepointBlob",
                                                blob->instructions_begin(),
                                                blob->instructions_end());
     }
   }
   // Track memory usage statistic after releasing CodeCache_lock
   MemoryService::track_code_cache_memory_usage();
   return blob;
 }
 void* SafepointBlob::operator new(size_t s, unsigned size) {
   void* p = CodeCache::allocate(size);
   if (!p) fatal("Initial size of CodeCache is too small");
   return p;
 }
 //----------------------------------------------------------------------------------------------------
 // Verification and printing
 void CodeBlob::verify() {
   ShouldNotReachHere();
 }
 #ifndef PRODUCT
 void CodeBlob::print() const {
   tty->print_cr("[CodeBlob (" INTPTR_FORMAT ")]", this);
   tty->print_cr("Framesize: %d", _frame_size);
 }
 void CodeBlob::print_value_on(outputStream* st) const {
   st->print_cr("[CodeBlob]");
 }
 #endif
 void BufferBlob::verify() {
   // unimplemented
 }
 #ifndef PRODUCT
 void BufferBlob::print() const {
   CodeBlob::print();
   print_value_on(tty);
 }
 void BufferBlob::print_value_on(outputStream* st) const {
   st->print_cr("BufferBlob (" INTPTR_FORMAT  ") used for %s", this, name());
 }
 #endif
 void RuntimeStub::verify() {
   // unimplemented
 }
 #ifndef PRODUCT
 void RuntimeStub::print() const {
   CodeBlob::print();
   tty->print("Runtime Stub (" INTPTR_FORMAT "): ", this);
   tty->print_cr(name());
   Disassembler::decode((CodeBlob*)this);
 }
 void RuntimeStub::print_value_on(outputStream* st) const {
   st->print("RuntimeStub (" INTPTR_FORMAT "): ", this); st->print(name());
 }
 #endif
 void SingletonBlob::verify() {
   // unimplemented
 }
 #ifndef PRODUCT
 void SingletonBlob::print() const {
   CodeBlob::print();
   tty->print_cr(name());
   Disassembler::decode((CodeBlob*)this);
 }
 void SingletonBlob::print_value_on(outputStream* st) const {
   st->print_cr(name());
 }
 void DeoptimizationBlob::print_value_on(outputStream* st) const {
   st->print_cr("Deoptimization (frame not available)");
 }
 #endif // PRODUCT

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/code/codeBlob.cpp@2a47bd84841f (annotated)

src/share/vm/code/codeBlob.cpp