Mercurial > hg > truffle
annotate src/os/linux/vm/os_linux.inline.hpp @ 4931:64fc5ac1b770
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author | minqi |
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date | Tue, 14 Feb 2012 23:50:12 -0800 |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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 | |
28 #include "runtime/atomic.hpp" | |
29 #include "runtime/os.hpp" | |
30 #ifdef TARGET_OS_ARCH_linux_x86 | |
31 # include "atomic_linux_x86.inline.hpp" | |
32 # include "orderAccess_linux_x86.inline.hpp" | |
33 #endif | |
34 #ifdef TARGET_OS_ARCH_linux_sparc | |
35 # include "atomic_linux_sparc.inline.hpp" | |
36 # include "orderAccess_linux_sparc.inline.hpp" | |
37 #endif | |
38 #ifdef TARGET_OS_ARCH_linux_zero | |
39 # include "atomic_linux_zero.inline.hpp" | |
40 # include "orderAccess_linux_zero.inline.hpp" | |
41 #endif | |
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42 #ifdef TARGET_OS_ARCH_linux_arm |
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43 # include "atomic_linux_arm.inline.hpp" |
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44 # include "orderAccess_linux_arm.inline.hpp" |
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45 #endif |
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46 #ifdef TARGET_OS_ARCH_linux_ppc |
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47 # include "atomic_linux_ppc.inline.hpp" |
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48 # include "orderAccess_linux_ppc.inline.hpp" |
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49 #endif |
1972 | 50 |
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51 // System includes |
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52 |
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53 #include <unistd.h> |
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54 #include <sys/socket.h> |
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55 #include <sys/poll.h> |
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56 #include <netdb.h> |
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57 |
0 | 58 inline void* os::thread_local_storage_at(int index) { |
59 return pthread_getspecific((pthread_key_t)index); | |
60 } | |
61 | |
62 inline const char* os::file_separator() { | |
63 return "/"; | |
64 } | |
65 | |
66 inline const char* os::line_separator() { | |
67 return "\n"; | |
68 } | |
69 | |
70 inline const char* os::path_separator() { | |
71 return ":"; | |
72 } | |
73 | |
74 inline const char* os::jlong_format_specifier() { | |
75 return "%lld"; | |
76 } | |
77 | |
78 inline const char* os::julong_format_specifier() { | |
79 return "%llu"; | |
80 } | |
81 | |
82 // File names are case-sensitive on windows only | |
83 inline int os::file_name_strcmp(const char* s1, const char* s2) { | |
84 return strcmp(s1, s2); | |
85 } | |
86 | |
87 inline bool os::obsolete_option(const JavaVMOption *option) { | |
88 return false; | |
89 } | |
90 | |
91 inline bool os::uses_stack_guard_pages() { | |
92 return true; | |
93 } | |
94 | |
95 inline bool os::allocate_stack_guard_pages() { | |
96 assert(uses_stack_guard_pages(), "sanity check"); | |
97 return true; | |
98 } | |
99 | |
100 | |
101 // On Linux, reservations are made on a page by page basis, nothing to do. | |
102 inline void os::split_reserved_memory(char *base, size_t size, | |
103 size_t split, bool realloc) { | |
104 } | |
105 | |
106 | |
107 // Bang the shadow pages if they need to be touched to be mapped. | |
108 inline void os::bang_stack_shadow_pages() { | |
109 } | |
110 | |
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111 inline void os::dll_unload(void *lib) { |
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112 ::dlclose(lib); |
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113 } |
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114 |
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115 inline const int os::default_file_open_flags() { return 0;} |
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116 |
0 | 117 inline DIR* os::opendir(const char* dirname) |
118 { | |
119 assert(dirname != NULL, "just checking"); | |
120 return ::opendir(dirname); | |
121 } | |
122 | |
123 inline int os::readdir_buf_size(const char *path) | |
124 { | |
125 return NAME_MAX + sizeof(dirent) + 1; | |
126 } | |
127 | |
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128 inline jlong os::lseek(int fd, jlong offset, int whence) { |
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129 return (jlong) ::lseek64(fd, offset, whence); |
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130 } |
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131 |
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132 inline int os::fsync(int fd) { |
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133 return ::fsync(fd); |
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134 } |
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135 |
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136 inline char* os::native_path(char *path) { |
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137 return path; |
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138 } |
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139 |
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140 inline int os::ftruncate(int fd, jlong length) { |
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141 return ::ftruncate64(fd, length); |
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142 } |
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143 |
0 | 144 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) |
145 { | |
146 dirent* p; | |
147 int status; | |
148 assert(dirp != NULL, "just checking"); | |
149 | |
150 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX | |
151 // version. Here is the doc for this function: | |
152 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html | |
153 | |
154 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { | |
155 errno = status; | |
156 return NULL; | |
157 } else | |
158 return p; | |
159 } | |
160 | |
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161 inline int os::closedir(DIR *dirp) { |
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162 assert(dirp != NULL, "argument is NULL"); |
0 | 163 return ::closedir(dirp); |
164 } | |
165 | |
166 // macros for restartable system calls | |
167 | |
168 #define RESTARTABLE(_cmd, _result) do { \ | |
169 _result = _cmd; \ | |
170 } while(((int)_result == OS_ERR) && (errno == EINTR)) | |
171 | |
172 #define RESTARTABLE_RETURN_INT(_cmd) do { \ | |
173 int _result; \ | |
174 RESTARTABLE(_cmd, _result); \ | |
175 return _result; \ | |
176 } while(false) | |
141 | 177 |
178 inline bool os::numa_has_static_binding() { return true; } | |
179 inline bool os::numa_has_group_homing() { return false; } | |
1972 | 180 |
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181 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
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182 size_t res; |
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183 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); |
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184 return res; |
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185 } |
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186 |
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187 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
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188 size_t res; |
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189 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); |
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190 return res; |
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191 } |
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192 |
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193 inline int os::close(int fd) { |
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194 return ::close(fd); |
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195 } |
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196 |
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197 inline int os::socket_close(int fd) { |
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198 return ::close(fd); |
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199 } |
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200 |
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201 inline int os::socket(int domain, int type, int protocol) { |
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202 return ::socket(domain, type, protocol); |
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203 } |
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204 |
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205 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
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206 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); |
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207 } |
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208 |
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209 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
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210 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); |
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211 } |
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212 |
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213 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
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214 return os::send(fd, buf, nBytes, flags); |
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215 } |
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216 |
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217 inline int os::timeout(int fd, long timeout) { |
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218 julong prevtime,newtime; |
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219 struct timeval t; |
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220 |
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221 gettimeofday(&t, NULL); |
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222 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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223 |
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224 for(;;) { |
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225 struct pollfd pfd; |
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226 |
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227 pfd.fd = fd; |
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228 pfd.events = POLLIN | POLLERR; |
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229 |
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230 int res = ::poll(&pfd, 1, timeout); |
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231 |
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232 if (res == OS_ERR && errno == EINTR) { |
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233 |
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234 // On Linux any value < 0 means "forever" |
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235 |
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236 if(timeout >= 0) { |
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237 gettimeofday(&t, NULL); |
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238 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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239 timeout -= newtime - prevtime; |
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240 if(timeout <= 0) |
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241 return OS_OK; |
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242 prevtime = newtime; |
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243 } |
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244 } else |
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245 return res; |
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246 } |
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247 } |
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248 |
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249 inline int os::listen(int fd, int count) { |
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250 return ::listen(fd, count); |
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251 } |
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252 |
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253 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
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254 RESTARTABLE_RETURN_INT(::connect(fd, him, len)); |
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255 } |
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256 |
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257 inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
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258 // Linux doc says this can't return EINTR, unlike accept() on Solaris. |
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259 // But see attachListener_linux.cpp, LinuxAttachListener::dequeue(). |
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260 return (int)::accept(fd, him, len); |
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261 } |
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262 |
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263 inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
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264 sockaddr* from, socklen_t* fromlen) { |
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265 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); |
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266 } |
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267 |
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268 inline int os::sendto(int fd, char* buf, size_t len, uint flags, |
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269 struct sockaddr* to, socklen_t tolen) { |
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270 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); |
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271 } |
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272 |
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273 inline int os::socket_shutdown(int fd, int howto) { |
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274 return ::shutdown(fd, howto); |
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275 } |
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276 |
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277 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
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278 return ::bind(fd, him, len); |
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279 } |
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280 |
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281 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
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282 return ::getsockname(fd, him, len); |
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283 } |
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284 |
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285 inline int os::get_host_name(char* name, int namelen) { |
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286 return ::gethostname(name, namelen); |
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287 } |
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288 |
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289 inline struct hostent* os::get_host_by_name(char* name) { |
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290 return ::gethostbyname(name); |
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291 } |
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292 |
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293 inline int os::get_sock_opt(int fd, int level, int optname, |
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294 char* optval, socklen_t* optlen) { |
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295 return ::getsockopt(fd, level, optname, optval, optlen); |
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296 } |
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297 |
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298 inline int os::set_sock_opt(int fd, int level, int optname, |
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299 const char* optval, socklen_t optlen) { |
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300 return ::setsockopt(fd, level, optname, optval, optlen); |
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301 } |
1972 | 302 #endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP |