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src/os/windows/vm/os_windows.inline.hpp@d2a62e0f25eb (annotated)

src/os/windows/vm/os_windows.inline.hpp

Thu, 28 Jun 2012 17:03:16 -0400

author

zgu

date

Thu, 28 Jun 2012 17:03:16 -0400

changeset 3900

d2a62e0f25eb

parent 2322

828eafbd85cc

child 4318

cd3d6a6b95d9

permissions

-rw-r--r--

6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1997, 2010, 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 OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP
stefank@2314	26	#define OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/atomic.hpp"
stefank@2314	29	#include "runtime/os.hpp"
stefank@2314	30	#ifdef TARGET_OS_ARCH_windows_x86
stefank@2314	31	# include "atomic_windows_x86.inline.hpp"
stefank@2314	32	# include "orderAccess_windows_x86.inline.hpp"
stefank@2314	33	#endif
stefank@2314	34
duke@435	35	inline const char* os::file_separator() { return "\\"; }
duke@435	36	inline const char* os::line_separator() { return "\r\n"; }
duke@435	37	inline const char* os::path_separator() { return ";"; }
ikrylov@2322	38	inline const char* os::dll_file_extension() { return ".dll"; }
duke@435	39
duke@435	40	inline const char* os::jlong_format_specifier() { return "%I64d"; }
duke@435	41	inline const char* os::julong_format_specifier() { return "%I64u"; }
duke@435	42
ikrylov@2322	43	inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;}
ikrylov@2322	44
duke@435	45	// File names are case-insensitive on windows only
duke@435	46	inline int os::file_name_strcmp(const char* s, const char* t) {
duke@435	47	return _stricmp(s, t);
duke@435	48	}
duke@435	49
ikrylov@2322	50	inline void os::dll_unload(void *lib) {
ikrylov@2322	51	::FreeLibrary((HMODULE)lib);
ikrylov@2322	52	}
ikrylov@2322	53
ikrylov@2322	54	inline void* os::dll_lookup(void *lib, const char *name) {
ikrylov@2322	55	return (void*)::GetProcAddress((HMODULE)lib, name);
ikrylov@2322	56	}
ikrylov@2322	57
duke@435	58	// Used to improve time-sharing on some systems
duke@435	59	inline void os::loop_breaker(int attempts) {}
duke@435	60
duke@435	61	inline bool os::obsolete_option(const JavaVMOption *option) {
duke@435	62	return false;
duke@435	63	}
duke@435	64
duke@435	65	inline bool os::uses_stack_guard_pages() {
duke@435	66	return os::win32::is_nt();
duke@435	67	}
duke@435	68
duke@435	69	inline bool os::allocate_stack_guard_pages() {
duke@435	70	assert(uses_stack_guard_pages(), "sanity check");
duke@435	71	return true;
duke@435	72	}
duke@435	73
duke@435	74	inline int os::readdir_buf_size(const char *path)
duke@435	75	{
duke@435	76	/* As Windows doesn't use the directory entry buffer passed to
duke@435	77	os::readdir() this can be as short as possible */
duke@435	78
duke@435	79	return 1;
duke@435	80	}
duke@435	81
duke@435	82	// Bang the shadow pages if they need to be touched to be mapped.
duke@435	83	inline void os::bang_stack_shadow_pages() {
duke@435	84	// Write to each page of our new frame to force OS mapping.
duke@435	85	// If we decrement stack pointer more than one page
duke@435	86	// the OS may not map an intervening page into our space
duke@435	87	// and may fault on a memory access to interior of our frame.
duke@435	88	address sp = current_stack_pointer();
duke@435	89	for (int pages = 1; pages <= StackShadowPages; pages++) {
duke@435	90	*((int *)(sp - (pages * vm_page_size()))) = 0;
duke@435	91	}
duke@435	92	}
iveresov@576	93
iveresov@576	94	inline bool os::numa_has_static_binding() { return true; }
iveresov@576	95	inline bool os::numa_has_group_homing() { return false; }
stefank@2314	96
ikrylov@2322	97	inline size_t os::read(int fd, void *buf, unsigned int nBytes) {
ikrylov@2322	98	return ::read(fd, buf, nBytes);
ikrylov@2322	99	}
ikrylov@2322	100
ikrylov@2322	101	inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
ikrylov@2322	102	return ::read(fd, buf, nBytes);
ikrylov@2322	103	}
ikrylov@2322	104
ikrylov@2322	105	inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
ikrylov@2322	106	return ::write(fd, buf, nBytes);
ikrylov@2322	107	}
ikrylov@2322	108
ikrylov@2322	109	inline int os::close(int fd) {
ikrylov@2322	110	return ::close(fd);
ikrylov@2322	111	}
stefank@2314	112	#endif // OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP