jdk8-mips64-public/hotspot: src/share/vm/memory/allocation.inline.hpp@461159cd7a91 (annotated)

src/share/vm/memory/allocation.inline.hpp@461159cd7a91 (annotated)

src/share/vm/memory/allocation.inline.hpp

Thu, 26 Sep 2013 12:18:21 +0200

author: tschatzl
date: Thu, 26 Sep 2013 12:18:21 +0200
changeset 5775: 461159cd7a91
parent 5614: 9758d9f36299
child 6876: 710a3c8b516e
child 7074: 833b0f92429a
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1997, 2013, 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.
  *
  */
 #ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
 #define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
 #include "runtime/atomic.inline.hpp"
 #include "runtime/os.hpp"
 // Explicit C-heap memory management
 void trace_heap_malloc(size_t size, const char* name, void *p);
 void trace_heap_free(void *p);
 #ifndef PRODUCT
 // Increments unsigned long value for statistics (not atomic on MP).
 inline void inc_stat_counter(volatile julong* dest, julong add_value) {
 #if defined(SPARC) || defined(X86)
   // Sparc and X86 have atomic jlong (8 bytes) instructions
   julong value = Atomic::load((volatile jlong*)dest);
   value += add_value;
   Atomic::store((jlong)value, (volatile jlong*)dest);
 #else
   // possible word-tearing during load/store
   *dest += add_value;
 #endif
 }
 #endif
 // allocate using malloc; will fail if no memory available
 inline char* AllocateHeap(size_t size, MEMFLAGS flags, address pc = 0,
     AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
   if (pc == 0) {
     pc = CURRENT_PC;
   }
   char* p = (char*) os::malloc(size, flags, pc);
   #ifdef ASSERT
   if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p);
   #endif
   if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) {
     vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "AllocateHeap");
   }
   return p;
 }
 inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags,
     AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {
   char* p = (char*) os::realloc(old, size, flags, CURRENT_PC);
   #ifdef ASSERT
   if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p);
   #endif
   if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) {
     vm_exit_out_of_memory(size, OOM_MALLOC_ERROR, "ReallocateHeap");
   }
   return p;
 }
 inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) {
   #ifdef ASSERT
   if (PrintMallocFree) trace_heap_free(p);
   #endif
   os::free(p, memflags);
 }
 template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size,
       address caller_pc) throw() {
     void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));
 #ifdef ASSERT
     if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
 #endif
     return p;
   }
 template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size,
   const std::nothrow_t&  nothrow_constant, address caller_pc) throw() {
   void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC),
       AllocFailStrategy::RETURN_NULL);
 #ifdef ASSERT
     if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);
 #endif
     return p;
 }
 template <MEMFLAGS F> void* CHeapObj<F>::operator new [](size_t size,
       address caller_pc) throw() {
     return CHeapObj<F>::operator new(size, caller_pc);
 }
 template <MEMFLAGS F> void* CHeapObj<F>::operator new [](size_t size,
   const std::nothrow_t&  nothrow_constant, address caller_pc) throw() {
     return CHeapObj<F>::operator new(size, nothrow_constant, caller_pc);
 }
 template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){
     FreeHeap(p, F);
 }
 template <MEMFLAGS F> void CHeapObj<F>::operator delete [](void* p){
     FreeHeap(p, F);
 }
 template <class E, MEMFLAGS F>
 E* ArrayAllocator<E, F>::allocate(size_t length) {
   assert(_addr == NULL, "Already in use");
   _size = sizeof(E) * length;
   _use_malloc = _size < ArrayAllocatorMallocLimit;
   if (_use_malloc) {
     _addr = AllocateHeap(_size, F);
     if (_addr == NULL && _size >=  (size_t)os::vm_allocation_granularity()) {
       // malloc failed let's try with mmap instead
       _use_malloc = false;
     } else {
       return (E*)_addr;
     }
   }
   int alignment = os::vm_allocation_granularity();
   _size = align_size_up(_size, alignment);
   _addr = os::reserve_memory(_size, NULL, alignment, F);
   if (_addr == NULL) {
     vm_exit_out_of_memory(_size, OOM_MMAP_ERROR, "Allocator (reserve)");
   }
   os::commit_memory_or_exit(_addr, _size, !ExecMem, "Allocator (commit)");
   return (E*)_addr;
 }
 template<class E, MEMFLAGS F>
 void ArrayAllocator<E, F>::free() {
   if (_addr != NULL) {
     if (_use_malloc) {
       FreeHeap(_addr, F);
     } else {
       os::release_memory(_addr, _size);
     }
     _addr = NULL;
   }
 }
 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/memory/allocation.inline.hpp@461159cd7a91 (annotated)

src/share/vm/memory/allocation.inline.hpp