jdk8-mips64-public/hotspot: src/share/vm/memory/allocation.inline.hpp@16fb9f942703

6479360: PrintClassHistogram improvements
Summary: jcmd <pid> GC.class_stats (UnlockDiagnosticVMOptions)
Reviewed-by: coleenp, hseigel, sla, acorn
Contributed-by: ioi.lam@oracle.com

     1 /*

     2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

    26 #define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

    28 #include "runtime/os.hpp"

    30 // Explicit C-heap memory management

    32 void trace_heap_malloc(size_t size, const char* name, void *p);

    33 void trace_heap_free(void *p);

    35 #ifndef PRODUCT

    36 // Increments unsigned long value for statistics (not atomic on MP).

    37 inline void inc_stat_counter(volatile julong* dest, julong add_value) {

    38 #if defined(SPARC) || defined(X86)

    39   // Sparc and X86 have atomic jlong (8 bytes) instructions

    40   julong value = Atomic::load((volatile jlong*)dest);

    41   value += add_value;

    42   Atomic::store((jlong)value, (volatile jlong*)dest);

    43 #else

    44   // possible word-tearing during load/store

    45   *dest += add_value;

    46 #endif

    47 }

    48 #endif

    50 // allocate using malloc; will fail if no memory available

    51 inline char* AllocateHeap(size_t size, MEMFLAGS flags, address pc = 0,

    52     AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {

    53   if (pc == 0) {

    54     pc = CURRENT_PC;

    55   }

    56   char* p = (char*) os::malloc(size, flags, pc);

    57   #ifdef ASSERT

    58   if (PrintMallocFree) trace_heap_malloc(size, "AllocateHeap", p);

    59   #endif

    60   if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) vm_exit_out_of_memory(size, "AllocateHeap");

    61   return p;

    62 }

    64 inline char* ReallocateHeap(char *old, size_t size, MEMFLAGS flags,

    65     AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM) {

    66   char* p = (char*) os::realloc(old, size, flags, CURRENT_PC);

    67   #ifdef ASSERT

    68   if (PrintMallocFree) trace_heap_malloc(size, "ReallocateHeap", p);

    69   #endif

    70   if (p == NULL && alloc_failmode == AllocFailStrategy::EXIT_OOM) vm_exit_out_of_memory(size, "ReallocateHeap");

    71   return p;

    72 }

    74 inline void FreeHeap(void* p, MEMFLAGS memflags = mtInternal) {

    75   #ifdef ASSERT

    76   if (PrintMallocFree) trace_heap_free(p);

    77   #endif

    78   os::free(p, memflags);

    79 }

    82 template <MEMFLAGS F> void* CHeapObj<F>::operator new(size_t size,

    83       address caller_pc){

    84 #ifdef ASSERT

    85     void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

    86     if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);

    87     return p;

    88 #else

    89     return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC));

    90 #endif

    91   }

    93 template <MEMFLAGS F> void* CHeapObj<F>::operator new (size_t size,

    94   const std::nothrow_t&  nothrow_constant, address caller_pc) {

    95 #ifdef ASSERT

    96   void* p = (void*)AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC),

    97       AllocFailStrategy::RETURN_NULL);

    98     if (PrintMallocFree) trace_heap_malloc(size, "CHeapObj-new", p);

    99     return p;

   100 #else

   101   return (void *) AllocateHeap(size, F, (caller_pc != 0 ? caller_pc : CALLER_PC),

   102       AllocFailStrategy::RETURN_NULL);

   103 #endif

   104 }

   106 template <MEMFLAGS F> void CHeapObj<F>::operator delete(void* p){

   107    FreeHeap(p, F);

   108 }

   111 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/memory/allocation.inline.hpp@16fb9f942703

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