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src/os/bsd/vm/os_bsd.inline.hpp@ce8f6bb717c9 (annotated)

src/os/bsd/vm/os_bsd.inline.hpp

Tue, 29 Apr 2014 15:17:27 +0200

author

goetz

date

Tue, 29 Apr 2014 15:17:27 +0200

changeset 6911

ce8f6bb717c9

parent 5264

e95fc50106cf

child 7535

7ae4e26cb1e0

child 9711

0f2fe7d37d8c

permissions

-rw-r--r--

8042195: Introduce umbrella header orderAccess.inline.hpp.
Reviewed-by: dholmes, kvn, stefank, twisti

never@3156	1	/*
hseigel@4465	2	* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
never@3156	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@3156	4	*
never@3156	5	* This code is free software; you can redistribute it and/or modify it
never@3156	6	* under the terms of the GNU General Public License version 2 only, as
never@3156	7	* published by the Free Software Foundation.
never@3156	8	*
never@3156	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@3156	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@3156	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@3156	12	* version 2 for more details (a copy is included in the LICENSE file that
never@3156	13	* accompanied this code).
never@3156	14	*
never@3156	15	* You should have received a copy of the GNU General Public License version
never@3156	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@3156	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@3156	18	*
never@3156	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
never@3156	20	* or visit www.oracle.com if you need additional information or have any
never@3156	21	* questions.
never@3156	22	*
never@3156	23	*/
never@3156	24
never@3156	25	#ifndef OS_BSD_VM_OS_BSD_INLINE_HPP
never@3156	26	#define OS_BSD_VM_OS_BSD_INLINE_HPP
never@3156	27
twisti@4318	28	#include "runtime/atomic.inline.hpp"
goetz@6911	29	#include "runtime/orderAccess.inline.hpp"
never@3156	30	#include "runtime/os.hpp"
twisti@4318	31
never@3156	32	// System includes
never@3156	33
never@3156	34	#include <unistd.h>
never@3156	35	#include <sys/socket.h>
never@3156	36	#include <sys/poll.h>
never@3156	37	#include <netdb.h>
never@3156	38
never@3156	39	inline void* os::thread_local_storage_at(int index) {
never@3156	40	return pthread_getspecific((pthread_key_t)index);
never@3156	41	}
never@3156	42
never@3156	43	inline const char* os::file_separator() {
never@3156	44	return "/";
never@3156	45	}
never@3156	46
never@3156	47	inline const char* os::line_separator() {
never@3156	48	return "\n";
never@3156	49	}
never@3156	50
never@3156	51	inline const char* os::path_separator() {
never@3156	52	return ":";
never@3156	53	}
never@3156	54
never@3156	55	// File names are case-sensitive on windows only
never@3156	56	inline int os::file_name_strcmp(const char* s1, const char* s2) {
never@3156	57	return strcmp(s1, s2);
never@3156	58	}
never@3156	59
never@3156	60	inline bool os::obsolete_option(const JavaVMOption *option) {
never@3156	61	return false;
never@3156	62	}
never@3156	63
never@3156	64	inline bool os::uses_stack_guard_pages() {
never@3156	65	return true;
never@3156	66	}
never@3156	67
never@3156	68	inline bool os::allocate_stack_guard_pages() {
never@3156	69	assert(uses_stack_guard_pages(), "sanity check");
never@3156	70	#if !defined(__FreeBSD__) || __FreeBSD__ < 5
never@3156	71	// Since FreeBSD 4 uses malloc() for allocating the thread stack
never@3156	72	// there is no need to do anything extra to allocate the guard pages
never@3156	73	return false;
never@3156	74	#else
never@3156	75	// FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks.
never@3156	76	// Must 'allocate' them or guard pages are ignored.
never@3156	77	return true;
never@3156	78	#endif
never@3156	79	}
never@3156	80
never@3156	81
never@3156	82	// On Bsd, reservations are made on a page by page basis, nothing to do.
zgu@3900	83	inline void os::pd_split_reserved_memory(char *base, size_t size,
never@3156	84	size_t split, bool realloc) {
never@3156	85	}
never@3156	86
never@3156	87
never@3156	88	// Bang the shadow pages if they need to be touched to be mapped.
never@3156	89	inline void os::bang_stack_shadow_pages() {
never@3156	90	}
never@3156	91
never@3156	92	inline void os::dll_unload(void *lib) {
never@3156	93	::dlclose(lib);
never@3156	94	}
never@3156	95
never@3156	96	inline const int os::default_file_open_flags() { return 0;}
never@3156	97
never@3156	98	inline DIR* os::opendir(const char* dirname)
never@3156	99	{
never@3156	100	assert(dirname != NULL, "just checking");
never@3156	101	return ::opendir(dirname);
never@3156	102	}
never@3156	103
never@3156	104	inline int os::readdir_buf_size(const char *path)
never@3156	105	{
never@3156	106	return NAME_MAX + sizeof(dirent) + 1;
never@3156	107	}
never@3156	108
never@3156	109	inline jlong os::lseek(int fd, jlong offset, int whence) {
never@3156	110	return (jlong) ::lseek(fd, offset, whence);
never@3156	111	}
never@3156	112
never@3156	113	inline int os::fsync(int fd) {
never@3156	114	return ::fsync(fd);
never@3156	115	}
never@3156	116
never@3156	117	inline char* os::native_path(char *path) {
never@3156	118	return path;
never@3156	119	}
never@3156	120
never@3156	121	inline int os::ftruncate(int fd, jlong length) {
never@3156	122	return ::ftruncate(fd, length);
never@3156	123	}
never@3156	124
never@3156	125	inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
never@3156	126	{
never@3156	127	dirent* p;
never@3156	128	int status;
never@3156	129	assert(dirp != NULL, "just checking");
never@3156	130
never@3156	131	// NOTE: Bsd readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
never@3156	132	// version. Here is the doc for this function:
never@3156	133	// http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
never@3156	134
never@3156	135	if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
never@3156	136	errno = status;
never@3156	137	return NULL;
never@3156	138	} else
never@3156	139	return p;
never@3156	140	}
never@3156	141
never@3156	142	inline int os::closedir(DIR *dirp) {
never@3156	143	assert(dirp != NULL, "argument is NULL");
never@3156	144	return ::closedir(dirp);
never@3156	145	}
never@3156	146
never@3156	147	// macros for restartable system calls
never@3156	148
never@3156	149	#define RESTARTABLE(_cmd, _result) do { \
never@3156	150	_result = _cmd; \
never@3156	151	} while(((int)_result == OS_ERR) && (errno == EINTR))
never@3156	152
never@3156	153	#define RESTARTABLE_RETURN_INT(_cmd) do { \
never@3156	154	int _result; \
never@3156	155	RESTARTABLE(_cmd, _result); \
never@3156	156	return _result; \
never@3156	157	} while(false)
never@3156	158
never@3156	159	inline bool os::numa_has_static_binding() { return true; }
never@3156	160	inline bool os::numa_has_group_homing() { return false; }
never@3156	161
never@3156	162	inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
never@3156	163	size_t res;
never@3156	164	RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
never@3156	165	return res;
never@3156	166	}
never@3156	167
never@3156	168	inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
never@3156	169	size_t res;
never@3156	170	RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
never@3156	171	return res;
never@3156	172	}
never@3156	173
never@3156	174	inline int os::close(int fd) {
rdurbin@5264	175	return ::close(fd);
never@3156	176	}
never@3156	177
never@3156	178	inline int os::socket_close(int fd) {
rdurbin@5264	179	return ::close(fd);
never@3156	180	}
never@3156	181
never@3156	182	inline int os::socket(int domain, int type, int protocol) {
never@3156	183	return ::socket(domain, type, protocol);
never@3156	184	}
never@3156	185
phh@3344	186	inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
phh@3344	187	RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
never@3156	188	}
never@3156	189
phh@3344	190	inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
phh@3344	191	RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
never@3156	192	}
never@3156	193
phh@3344	194	inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
never@3156	195	return os::send(fd, buf, nBytes, flags);
never@3156	196	}
never@3156	197
never@3156	198	inline int os::timeout(int fd, long timeout) {
never@3156	199	julong prevtime,newtime;
never@3156	200	struct timeval t;
never@3156	201
never@3156	202	gettimeofday(&t, NULL);
never@3156	203	prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
never@3156	204
never@3156	205	for(;;) {
never@3156	206	struct pollfd pfd;
never@3156	207
never@3156	208	pfd.fd = fd;
never@3156	209	pfd.events = POLLIN | POLLERR;
never@3156	210
never@3156	211	int res = ::poll(&pfd, 1, timeout);
never@3156	212
never@3156	213	if (res == OS_ERR && errno == EINTR) {
never@3156	214
never@3156	215	// On Bsd any value < 0 means "forever"
never@3156	216
never@3156	217	if(timeout >= 0) {
never@3156	218	gettimeofday(&t, NULL);
never@3156	219	newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
never@3156	220	timeout -= newtime - prevtime;
never@3156	221	if(timeout <= 0)
never@3156	222	return OS_OK;
never@3156	223	prevtime = newtime;
never@3156	224	}
never@3156	225	} else
never@3156	226	return res;
never@3156	227	}
never@3156	228	}
never@3156	229
never@3156	230	inline int os::listen(int fd, int count) {
never@3156	231	return ::listen(fd, count);
never@3156	232	}
never@3156	233
phh@3344	234	inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
never@3156	235	RESTARTABLE_RETURN_INT(::connect(fd, him, len));
never@3156	236	}
never@3156	237
phh@3344	238	inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
never@3156	239	// At least OpenBSD and FreeBSD can return EINTR from accept.
phh@3344	240	RESTARTABLE_RETURN_INT(::accept(fd, him, len));
never@3156	241	}
never@3156	242
phh@3344	243	inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
phh@3344	244	sockaddr* from, socklen_t* fromlen) {
phh@3344	245	RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
never@3156	246	}
never@3156	247
phh@3344	248	inline int os::sendto(int fd, char* buf, size_t len, uint flags,
phh@3344	249	struct sockaddr *to, socklen_t tolen) {
phh@3344	250	RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
never@3156	251	}
never@3156	252
phh@3344	253	inline int os::socket_shutdown(int fd, int howto) {
never@3156	254	return ::shutdown(fd, howto);
never@3156	255	}
never@3156	256
phh@3344	257	inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
never@3156	258	return ::bind(fd, him, len);
never@3156	259	}
never@3156	260
phh@3344	261	inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
phh@3344	262	return ::getsockname(fd, him, len);
never@3156	263	}
never@3156	264
phh@3344	265	inline int os::get_host_name(char* name, int namelen) {
never@3156	266	return ::gethostname(name, namelen);
never@3156	267	}
never@3156	268
phh@3344	269	inline struct hostent* os::get_host_by_name(char* name) {
never@3156	270	return ::gethostbyname(name);
never@3156	271	}
phh@3344	272
never@3156	273	inline int os::get_sock_opt(int fd, int level, int optname,
phh@3344	274	char *optval, socklen_t* optlen) {
phh@3344	275	return ::getsockopt(fd, level, optname, optval, optlen);
never@3156	276	}
never@3156	277
never@3156	278	inline int os::set_sock_opt(int fd, int level, int optname,
phh@3344	279	const char* optval, socklen_t optlen) {
never@3156	280	return ::setsockopt(fd, level, optname, optval, optlen);
never@3156	281	}
simonis@4675	282
never@3156	283	#endif // OS_BSD_VM_OS_BSD_INLINE_HPP