Mercurial > hg > truffle
annotate src/os/bsd/vm/os_bsd.inline.hpp @ 17780:606acabe7b5c
8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed
author | kvn |
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date | Thu, 20 Mar 2014 17:49:27 -0700 |
parents | e95fc50106cf |
children | 6c9332549827 ce8f6bb717c9 |
rev | line source |
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3960 | 1 /* |
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
3960 | 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 */ | |
24 | |
25 #ifndef OS_BSD_VM_OS_BSD_INLINE_HPP | |
26 #define OS_BSD_VM_OS_BSD_INLINE_HPP | |
27 | |
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28 #include "runtime/atomic.inline.hpp" |
3960 | 29 #include "runtime/os.hpp" |
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30 |
3960 | 31 #ifdef TARGET_OS_ARCH_bsd_x86 |
32 # include "orderAccess_bsd_x86.inline.hpp" | |
33 #endif | |
34 #ifdef TARGET_OS_ARCH_bsd_zero | |
35 # include "orderAccess_bsd_zero.inline.hpp" | |
36 #endif | |
37 | |
38 // System includes | |
39 | |
40 #include <unistd.h> | |
41 #include <sys/socket.h> | |
42 #include <sys/poll.h> | |
43 #include <netdb.h> | |
44 | |
45 inline void* os::thread_local_storage_at(int index) { | |
46 return pthread_getspecific((pthread_key_t)index); | |
47 } | |
48 | |
49 inline const char* os::file_separator() { | |
50 return "/"; | |
51 } | |
52 | |
53 inline const char* os::line_separator() { | |
54 return "\n"; | |
55 } | |
56 | |
57 inline const char* os::path_separator() { | |
58 return ":"; | |
59 } | |
60 | |
61 // File names are case-sensitive on windows only | |
62 inline int os::file_name_strcmp(const char* s1, const char* s2) { | |
63 return strcmp(s1, s2); | |
64 } | |
65 | |
66 inline bool os::obsolete_option(const JavaVMOption *option) { | |
67 return false; | |
68 } | |
69 | |
70 inline bool os::uses_stack_guard_pages() { | |
71 return true; | |
72 } | |
73 | |
74 inline bool os::allocate_stack_guard_pages() { | |
75 assert(uses_stack_guard_pages(), "sanity check"); | |
76 #if !defined(__FreeBSD__) || __FreeBSD__ < 5 | |
77 // Since FreeBSD 4 uses malloc() for allocating the thread stack | |
78 // there is no need to do anything extra to allocate the guard pages | |
79 return false; | |
80 #else | |
81 // FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks. | |
82 // Must 'allocate' them or guard pages are ignored. | |
83 return true; | |
84 #endif | |
85 } | |
86 | |
87 | |
88 // On Bsd, reservations are made on a page by page basis, nothing to do. | |
6197 | 89 inline void os::pd_split_reserved_memory(char *base, size_t size, |
3960 | 90 size_t split, bool realloc) { |
91 } | |
92 | |
93 | |
94 // Bang the shadow pages if they need to be touched to be mapped. | |
95 inline void os::bang_stack_shadow_pages() { | |
96 } | |
97 | |
98 inline void os::dll_unload(void *lib) { | |
99 ::dlclose(lib); | |
100 } | |
101 | |
102 inline const int os::default_file_open_flags() { return 0;} | |
103 | |
104 inline DIR* os::opendir(const char* dirname) | |
105 { | |
106 assert(dirname != NULL, "just checking"); | |
107 return ::opendir(dirname); | |
108 } | |
109 | |
110 inline int os::readdir_buf_size(const char *path) | |
111 { | |
112 return NAME_MAX + sizeof(dirent) + 1; | |
113 } | |
114 | |
115 inline jlong os::lseek(int fd, jlong offset, int whence) { | |
116 return (jlong) ::lseek(fd, offset, whence); | |
117 } | |
118 | |
119 inline int os::fsync(int fd) { | |
120 return ::fsync(fd); | |
121 } | |
122 | |
123 inline char* os::native_path(char *path) { | |
124 return path; | |
125 } | |
126 | |
127 inline int os::ftruncate(int fd, jlong length) { | |
128 return ::ftruncate(fd, length); | |
129 } | |
130 | |
131 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) | |
132 { | |
133 dirent* p; | |
134 int status; | |
135 assert(dirp != NULL, "just checking"); | |
136 | |
137 // NOTE: Bsd readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX | |
138 // version. Here is the doc for this function: | |
139 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html | |
140 | |
141 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { | |
142 errno = status; | |
143 return NULL; | |
144 } else | |
145 return p; | |
146 } | |
147 | |
148 inline int os::closedir(DIR *dirp) { | |
149 assert(dirp != NULL, "argument is NULL"); | |
150 return ::closedir(dirp); | |
151 } | |
152 | |
153 // macros for restartable system calls | |
154 | |
155 #define RESTARTABLE(_cmd, _result) do { \ | |
156 _result = _cmd; \ | |
157 } while(((int)_result == OS_ERR) && (errno == EINTR)) | |
158 | |
159 #define RESTARTABLE_RETURN_INT(_cmd) do { \ | |
160 int _result; \ | |
161 RESTARTABLE(_cmd, _result); \ | |
162 return _result; \ | |
163 } while(false) | |
164 | |
165 inline bool os::numa_has_static_binding() { return true; } | |
166 inline bool os::numa_has_group_homing() { return false; } | |
167 | |
168 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { | |
169 size_t res; | |
170 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); | |
171 return res; | |
172 } | |
173 | |
174 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { | |
175 size_t res; | |
176 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); | |
177 return res; | |
178 } | |
179 | |
180 inline int os::close(int fd) { | |
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181 return ::close(fd); |
3960 | 182 } |
183 | |
184 inline int os::socket_close(int fd) { | |
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185 return ::close(fd); |
3960 | 186 } |
187 | |
188 inline int os::socket(int domain, int type, int protocol) { | |
189 return ::socket(domain, type, protocol); | |
190 } | |
191 | |
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192 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
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193 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); |
3960 | 194 } |
195 | |
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196 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
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197 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); |
3960 | 198 } |
199 | |
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200 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
3960 | 201 return os::send(fd, buf, nBytes, flags); |
202 } | |
203 | |
204 inline int os::timeout(int fd, long timeout) { | |
205 julong prevtime,newtime; | |
206 struct timeval t; | |
207 | |
208 gettimeofday(&t, NULL); | |
209 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; | |
210 | |
211 for(;;) { | |
212 struct pollfd pfd; | |
213 | |
214 pfd.fd = fd; | |
215 pfd.events = POLLIN | POLLERR; | |
216 | |
217 int res = ::poll(&pfd, 1, timeout); | |
218 | |
219 if (res == OS_ERR && errno == EINTR) { | |
220 | |
221 // On Bsd any value < 0 means "forever" | |
222 | |
223 if(timeout >= 0) { | |
224 gettimeofday(&t, NULL); | |
225 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; | |
226 timeout -= newtime - prevtime; | |
227 if(timeout <= 0) | |
228 return OS_OK; | |
229 prevtime = newtime; | |
230 } | |
231 } else | |
232 return res; | |
233 } | |
234 } | |
235 | |
236 inline int os::listen(int fd, int count) { | |
237 return ::listen(fd, count); | |
238 } | |
239 | |
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240 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
3960 | 241 RESTARTABLE_RETURN_INT(::connect(fd, him, len)); |
242 } | |
243 | |
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244 inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
3960 | 245 // At least OpenBSD and FreeBSD can return EINTR from accept. |
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246 RESTARTABLE_RETURN_INT(::accept(fd, him, len)); |
3960 | 247 } |
248 | |
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249 inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
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250 sockaddr* from, socklen_t* fromlen) { |
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251 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); |
3960 | 252 } |
253 | |
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254 inline int os::sendto(int fd, char* buf, size_t len, uint flags, |
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255 struct sockaddr *to, socklen_t tolen) { |
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256 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); |
3960 | 257 } |
258 | |
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259 inline int os::socket_shutdown(int fd, int howto) { |
3960 | 260 return ::shutdown(fd, howto); |
261 } | |
262 | |
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263 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
3960 | 264 return ::bind(fd, him, len); |
265 } | |
266 | |
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267 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
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268 return ::getsockname(fd, him, len); |
3960 | 269 } |
270 | |
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271 inline int os::get_host_name(char* name, int namelen) { |
3960 | 272 return ::gethostname(name, namelen); |
273 } | |
274 | |
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275 inline struct hostent* os::get_host_by_name(char* name) { |
3960 | 276 return ::gethostbyname(name); |
277 } | |
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278 |
3960 | 279 inline int os::get_sock_opt(int fd, int level, int optname, |
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280 char *optval, socklen_t* optlen) { |
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281 return ::getsockopt(fd, level, optname, optval, optlen); |
3960 | 282 } |
283 | |
284 inline int os::set_sock_opt(int fd, int level, int optname, | |
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285 const char* optval, socklen_t optlen) { |
3960 | 286 return ::setsockopt(fd, level, optname, optval, optlen); |
287 } | |
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288 |
3960 | 289 #endif // OS_BSD_VM_OS_BSD_INLINE_HPP |