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src/share/vm/memory/allocation.inline.hpp@749b1464aa81 (annotated)

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

Sun, 01 Apr 2012 17:04:26 -0400

author

acorn

date

Sun, 01 Apr 2012 17:04:26 -0400

changeset 3686

749b1464aa81

parent 2562

bf29934d2f4f

child 3900

d2a62e0f25eb

permissions

-rw-r--r--

Merge

duke@435	1	/*
kvn@2557	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
stefank@2314	26	#define SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/os.hpp"
stefank@2314	29
duke@435	30	// Explicit C-heap memory management
duke@435	31
duke@435	32	void trace_heap_malloc(size_t size, const char* name, void *p);
duke@435	33	void trace_heap_free(void *p);
duke@435	34
kvn@2562	35	#ifndef PRODUCT
kvn@2557	36	// Increments unsigned long value for statistics (not atomic on MP).
kvn@2557	37	inline void inc_stat_counter(volatile julong* dest, julong add_value) {
kvn@2562	38	#if defined(SPARC) || defined(X86)
kvn@2562	39	// Sparc and X86 have atomic jlong (8 bytes) instructions
kvn@2557	40	julong value = Atomic::load((volatile jlong*)dest);
kvn@2557	41	value += add_value;
kvn@2557	42	Atomic::store((jlong)value, (volatile jlong*)dest);
kvn@2562	43	#else
kvn@2562	44	// possible word-tearing during load/store
kvn@2562	45	*dest += add_value;
kvn@2562	46	#endif
kvn@2557	47	}
kvn@2562	48	#endif
duke@435	49
duke@435	50	// allocate using malloc; will fail if no memory available
duke@435	51	inline char* AllocateHeap(size_t size, const char* name = NULL) {
duke@435	52	char* p = (char*) os::malloc(size);
duke@435	53	#ifdef ASSERT
duke@435	54	if (PrintMallocFree) trace_heap_malloc(size, name, p);
duke@435	55	#else
duke@435	56	Unused_Variable(name);
duke@435	57	#endif
duke@435	58	if (p == NULL) vm_exit_out_of_memory(size, name);
duke@435	59	return p;
duke@435	60	}
duke@435	61
duke@435	62	inline char* ReallocateHeap(char *old, size_t size, const char* name = NULL) {
duke@435	63	char* p = (char*) os::realloc(old,size);
duke@435	64	#ifdef ASSERT
duke@435	65	if (PrintMallocFree) trace_heap_malloc(size, name, p);
duke@435	66	#else
duke@435	67	Unused_Variable(name);
duke@435	68	#endif
duke@435	69	if (p == NULL) vm_exit_out_of_memory(size, name);
duke@435	70	return p;
duke@435	71	}
duke@435	72
duke@435	73	inline void FreeHeap(void* p) {
duke@435	74	#ifdef ASSERT
duke@435	75	if (PrintMallocFree) trace_heap_free(p);
duke@435	76	#endif
duke@435	77	os::free(p);
duke@435	78	}
stefank@2314	79
stefank@2314	80	#endif // SHARE_VM_MEMORY_ALLOCATION_INLINE_HPP