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src/os/linux/vm/os_linux.inline.hpp@9c2ecc2ffb12 (annotated)

src/os/linux/vm/os_linux.inline.hpp

Fri, 11 Jul 2008 01:14:44 -0700

author

trims

date

Fri, 11 Jul 2008 01:14:44 -0700

changeset 670

9c2ecc2ffb12

parent 631

d1605aabd0a1

child 1907

c18cbe5936b8

permissions

-rw-r--r--

Merge

duke@435	1	/*
xdono@631	2	* Copyright 1999-2008 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	inline void* os::thread_local_storage_at(int index) {
duke@435	26	return pthread_getspecific((pthread_key_t)index);
duke@435	27	}
duke@435	28
duke@435	29	inline const char* os::file_separator() {
duke@435	30	return "/";
duke@435	31	}
duke@435	32
duke@435	33	inline const char* os::line_separator() {
duke@435	34	return "\n";
duke@435	35	}
duke@435	36
duke@435	37	inline const char* os::path_separator() {
duke@435	38	return ":";
duke@435	39	}
duke@435	40
duke@435	41	inline const char* os::jlong_format_specifier() {
duke@435	42	return "%lld";
duke@435	43	}
duke@435	44
duke@435	45	inline const char* os::julong_format_specifier() {
duke@435	46	return "%llu";
duke@435	47	}
duke@435	48
duke@435	49	// File names are case-sensitive on windows only
duke@435	50	inline int os::file_name_strcmp(const char* s1, const char* s2) {
duke@435	51	return strcmp(s1, s2);
duke@435	52	}
duke@435	53
duke@435	54	inline bool os::obsolete_option(const JavaVMOption *option) {
duke@435	55	return false;
duke@435	56	}
duke@435	57
duke@435	58	inline bool os::uses_stack_guard_pages() {
duke@435	59	return true;
duke@435	60	}
duke@435	61
duke@435	62	inline bool os::allocate_stack_guard_pages() {
duke@435	63	assert(uses_stack_guard_pages(), "sanity check");
duke@435	64	return true;
duke@435	65	}
duke@435	66
duke@435	67
duke@435	68	// On Linux, reservations are made on a page by page basis, nothing to do.
duke@435	69	inline void os::split_reserved_memory(char *base, size_t size,
duke@435	70	size_t split, bool realloc) {
duke@435	71	}
duke@435	72
duke@435	73
duke@435	74	// Bang the shadow pages if they need to be touched to be mapped.
duke@435	75	inline void os::bang_stack_shadow_pages() {
duke@435	76	}
duke@435	77
duke@435	78	inline DIR* os::opendir(const char* dirname)
duke@435	79	{
duke@435	80	assert(dirname != NULL, "just checking");
duke@435	81	return ::opendir(dirname);
duke@435	82	}
duke@435	83
duke@435	84	inline int os::readdir_buf_size(const char *path)
duke@435	85	{
duke@435	86	return NAME_MAX + sizeof(dirent) + 1;
duke@435	87	}
duke@435	88
duke@435	89	inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
duke@435	90	{
duke@435	91	dirent* p;
duke@435	92	int status;
duke@435	93	assert(dirp != NULL, "just checking");
duke@435	94
duke@435	95	// NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
duke@435	96	// version. Here is the doc for this function:
duke@435	97	// http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
duke@435	98
duke@435	99	if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
duke@435	100	errno = status;
duke@435	101	return NULL;
duke@435	102	} else
duke@435	103	return p;
duke@435	104	}
duke@435	105
duke@435	106	inline int os::closedir(DIR *dirp)
duke@435	107	{
duke@435	108	assert(dirp != NULL, "just checking");
duke@435	109	return ::closedir(dirp);
duke@435	110	}
duke@435	111
duke@435	112	// macros for restartable system calls
duke@435	113
duke@435	114	#define RESTARTABLE(_cmd, _result) do { \
duke@435	115	_result = _cmd; \
duke@435	116	} while(((int)_result == OS_ERR) && (errno == EINTR))
duke@435	117
duke@435	118	#define RESTARTABLE_RETURN_INT(_cmd) do { \
duke@435	119	int _result; \
duke@435	120	RESTARTABLE(_cmd, _result); \
duke@435	121	return _result; \
duke@435	122	} while(false)
iveresov@576	123
iveresov@576	124	inline bool os::numa_has_static_binding() { return true; }
iveresov@576	125	inline bool os::numa_has_group_homing() { return false; }