Mercurial > hg > truffle
annotate src/os/linux/vm/os_linux.inline.hpp @ 15471:ef315dfdda35
new GraphUtil.predecessorIterable
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Fri, 02 May 2014 14:47:09 +0200 |
parents | 4ca6dc0799b6 |
children | 7848fc12602b |
rev | line source |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP |
26 #define OS_LINUX_VM_OS_LINUX_INLINE_HPP | |
27 | |
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28 #include "runtime/atomic.inline.hpp" |
1972 | 29 #include "runtime/os.hpp" |
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30 |
1972 | 31 #ifdef TARGET_OS_ARCH_linux_x86 |
32 # include "orderAccess_linux_x86.inline.hpp" | |
33 #endif | |
34 #ifdef TARGET_OS_ARCH_linux_sparc | |
35 # include "orderAccess_linux_sparc.inline.hpp" | |
36 #endif | |
37 #ifdef TARGET_OS_ARCH_linux_zero | |
38 # include "orderAccess_linux_zero.inline.hpp" | |
39 #endif | |
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40 #ifdef TARGET_OS_ARCH_linux_arm |
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41 # include "orderAccess_linux_arm.inline.hpp" |
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42 #endif |
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43 #ifdef TARGET_OS_ARCH_linux_ppc |
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44 # include "orderAccess_linux_ppc.inline.hpp" |
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45 #endif |
1972 | 46 |
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47 // System includes |
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48 |
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49 #include <unistd.h> |
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50 #include <sys/socket.h> |
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51 #include <sys/poll.h> |
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52 #include <netdb.h> |
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53 |
0 | 54 inline void* os::thread_local_storage_at(int index) { |
55 return pthread_getspecific((pthread_key_t)index); | |
56 } | |
57 | |
58 inline const char* os::file_separator() { | |
59 return "/"; | |
60 } | |
61 | |
62 inline const char* os::line_separator() { | |
63 return "\n"; | |
64 } | |
65 | |
66 inline const char* os::path_separator() { | |
67 return ":"; | |
68 } | |
69 | |
70 // File names are case-sensitive on windows only | |
71 inline int os::file_name_strcmp(const char* s1, const char* s2) { | |
72 return strcmp(s1, s2); | |
73 } | |
74 | |
75 inline bool os::obsolete_option(const JavaVMOption *option) { | |
76 return false; | |
77 } | |
78 | |
79 inline bool os::uses_stack_guard_pages() { | |
80 return true; | |
81 } | |
82 | |
83 inline bool os::allocate_stack_guard_pages() { | |
84 assert(uses_stack_guard_pages(), "sanity check"); | |
85 return true; | |
86 } | |
87 | |
88 | |
89 // On Linux, reservations are made on a page by page basis, nothing to do. | |
6197 | 90 inline void os::pd_split_reserved_memory(char *base, size_t size, |
0 | 91 size_t split, bool realloc) { |
92 } | |
93 | |
94 | |
95 // Bang the shadow pages if they need to be touched to be mapped. | |
96 inline void os::bang_stack_shadow_pages() { | |
97 } | |
98 | |
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99 inline void os::dll_unload(void *lib) { |
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100 ::dlclose(lib); |
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101 } |
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102 |
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103 inline const int os::default_file_open_flags() { return 0;} |
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104 |
0 | 105 inline DIR* os::opendir(const char* dirname) |
106 { | |
107 assert(dirname != NULL, "just checking"); | |
108 return ::opendir(dirname); | |
109 } | |
110 | |
111 inline int os::readdir_buf_size(const char *path) | |
112 { | |
113 return NAME_MAX + sizeof(dirent) + 1; | |
114 } | |
115 | |
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116 inline jlong os::lseek(int fd, jlong offset, int whence) { |
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117 return (jlong) ::lseek64(fd, offset, whence); |
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118 } |
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119 |
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120 inline int os::fsync(int fd) { |
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121 return ::fsync(fd); |
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122 } |
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123 |
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124 inline char* os::native_path(char *path) { |
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125 return path; |
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126 } |
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127 |
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128 inline int os::ftruncate(int fd, jlong length) { |
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129 return ::ftruncate64(fd, length); |
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130 } |
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131 |
0 | 132 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) |
133 { | |
134 dirent* p; | |
135 int status; | |
136 assert(dirp != NULL, "just checking"); | |
137 | |
138 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX | |
139 // version. Here is the doc for this function: | |
140 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html | |
141 | |
142 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { | |
143 errno = status; | |
144 return NULL; | |
145 } else | |
146 return p; | |
147 } | |
148 | |
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149 inline int os::closedir(DIR *dirp) { |
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150 assert(dirp != NULL, "argument is NULL"); |
0 | 151 return ::closedir(dirp); |
152 } | |
153 | |
154 // macros for restartable system calls | |
155 | |
156 #define RESTARTABLE(_cmd, _result) do { \ | |
157 _result = _cmd; \ | |
158 } while(((int)_result == OS_ERR) && (errno == EINTR)) | |
159 | |
160 #define RESTARTABLE_RETURN_INT(_cmd) do { \ | |
161 int _result; \ | |
162 RESTARTABLE(_cmd, _result); \ | |
163 return _result; \ | |
164 } while(false) | |
141 | 165 |
166 inline bool os::numa_has_static_binding() { return true; } | |
167 inline bool os::numa_has_group_homing() { return false; } | |
1972 | 168 |
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169 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
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170 size_t res; |
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171 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); |
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172 return res; |
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173 } |
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174 |
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175 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
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176 size_t res; |
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177 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); |
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178 return res; |
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179 } |
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180 |
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181 inline int os::close(int fd) { |
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182 return ::close(fd); |
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183 } |
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184 |
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185 inline int os::socket_close(int fd) { |
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186 return ::close(fd); |
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187 } |
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188 |
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189 inline int os::socket(int domain, int type, int protocol) { |
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190 return ::socket(domain, type, protocol); |
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191 } |
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192 |
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193 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
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194 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); |
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195 } |
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196 |
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197 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
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198 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); |
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199 } |
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200 |
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201 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
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202 return os::send(fd, buf, nBytes, flags); |
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203 } |
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204 |
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205 inline int os::timeout(int fd, long timeout) { |
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206 julong prevtime,newtime; |
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207 struct timeval t; |
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208 |
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209 gettimeofday(&t, NULL); |
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210 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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211 |
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212 for(;;) { |
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213 struct pollfd pfd; |
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214 |
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215 pfd.fd = fd; |
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216 pfd.events = POLLIN | POLLERR; |
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217 |
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218 int res = ::poll(&pfd, 1, timeout); |
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219 |
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220 if (res == OS_ERR && errno == EINTR) { |
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221 |
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222 // On Linux any value < 0 means "forever" |
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223 |
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224 if(timeout >= 0) { |
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225 gettimeofday(&t, NULL); |
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226 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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227 timeout -= newtime - prevtime; |
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228 if(timeout <= 0) |
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229 return OS_OK; |
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230 prevtime = newtime; |
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231 } |
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232 } else |
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233 return res; |
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234 } |
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235 } |
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236 |
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237 inline int os::listen(int fd, int count) { |
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238 return ::listen(fd, count); |
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239 } |
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240 |
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241 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
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242 RESTARTABLE_RETURN_INT(::connect(fd, him, len)); |
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243 } |
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244 |
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245 inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
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246 // Linux doc says this can't return EINTR, unlike accept() on Solaris. |
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247 // But see attachListener_linux.cpp, LinuxAttachListener::dequeue(). |
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248 return (int)::accept(fd, him, len); |
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249 } |
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250 |
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251 inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
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252 sockaddr* from, socklen_t* fromlen) { |
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253 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); |
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254 } |
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255 |
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256 inline int os::sendto(int fd, char* buf, size_t len, uint flags, |
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257 struct sockaddr* to, socklen_t tolen) { |
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258 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); |
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259 } |
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260 |
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261 inline int os::socket_shutdown(int fd, int howto) { |
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262 return ::shutdown(fd, howto); |
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263 } |
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264 |
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265 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
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266 return ::bind(fd, him, len); |
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267 } |
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268 |
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269 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
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270 return ::getsockname(fd, him, len); |
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271 } |
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272 |
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273 inline int os::get_host_name(char* name, int namelen) { |
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274 return ::gethostname(name, namelen); |
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275 } |
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276 |
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277 inline struct hostent* os::get_host_by_name(char* name) { |
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278 return ::gethostbyname(name); |
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279 } |
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280 |
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281 inline int os::get_sock_opt(int fd, int level, int optname, |
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282 char* optval, socklen_t* optlen) { |
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283 return ::getsockopt(fd, level, optname, optval, optlen); |
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284 } |
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285 |
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286 inline int os::set_sock_opt(int fd, int level, int optname, |
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287 const char* optval, socklen_t optlen) { |
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288 return ::setsockopt(fd, level, optname, optval, optlen); |
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289 } |
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290 |
1972 | 291 #endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP |