jdk8-mips64-public/hotspot: src/share/vm/memory/allocation.inline.hpp@09d00c18e323

     1 /*

     2  * Copyright (c) 1997, 2011, 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, const char* name = NULL) {

    52   char* p = (char*) os::malloc(size);

    53   #ifdef ASSERT

    54   if (PrintMallocFree) trace_heap_malloc(size, name, p);

    55   #else

    56   Unused_Variable(name);

    57   #endif

    58   if (p == NULL) vm_exit_out_of_memory(size, name);

    59   return p;

    60 }

    62 inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) {

    63   char* p = (char*) os::realloc(old,size);

    64   #ifdef ASSERT

    65   if (PrintMallocFree) trace_heap_malloc(size, name, p);

    66   #else

    67   Unused_Variable(name);

    68   #endif

    69   if (p == NULL) vm_exit_out_of_memory(size, name);

    70   return p;

    71 }

    73 inline void FreeHeap(void* p) {

    74   #ifdef ASSERT

    75   if (PrintMallocFree) trace_heap_free(p);

    76   #endif

    77   os::free(p);

    78 }

    80 #endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP

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