1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/linux/vm/os_linux.inline.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,291 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP
1.29 +#define OS_LINUX_VM_OS_LINUX_INLINE_HPP
1.30 +
1.31 +#include "runtime/atomic.inline.hpp"
1.32 +#include "runtime/os.hpp"
1.33 +
1.34 +#ifdef TARGET_OS_ARCH_linux_x86
1.35 +# include "orderAccess_linux_x86.inline.hpp"
1.36 +#endif
1.37 +#ifdef TARGET_OS_ARCH_linux_sparc
1.38 +# include "orderAccess_linux_sparc.inline.hpp"
1.39 +#endif
1.40 +#ifdef TARGET_OS_ARCH_linux_zero
1.41 +# include "orderAccess_linux_zero.inline.hpp"
1.42 +#endif
1.43 +#ifdef TARGET_OS_ARCH_linux_arm
1.44 +# include "orderAccess_linux_arm.inline.hpp"
1.45 +#endif
1.46 +#ifdef TARGET_OS_ARCH_linux_ppc
1.47 +# include "orderAccess_linux_ppc.inline.hpp"
1.48 +#endif
1.49 +
1.50 +// System includes
1.51 +
1.52 +#include <unistd.h>
1.53 +#include <sys/socket.h>
1.54 +#include <sys/poll.h>
1.55 +#include <netdb.h>
1.56 +
1.57 +inline void* os::thread_local_storage_at(int index) {
1.58 + return pthread_getspecific((pthread_key_t)index);
1.59 +}
1.60 +
1.61 +inline const char* os::file_separator() {
1.62 + return "/";
1.63 +}
1.64 +
1.65 +inline const char* os::line_separator() {
1.66 + return "\n";
1.67 +}
1.68 +
1.69 +inline const char* os::path_separator() {
1.70 + return ":";
1.71 +}
1.72 +
1.73 +// File names are case-sensitive on windows only
1.74 +inline int os::file_name_strcmp(const char* s1, const char* s2) {
1.75 + return strcmp(s1, s2);
1.76 +}
1.77 +
1.78 +inline bool os::obsolete_option(const JavaVMOption *option) {
1.79 + return false;
1.80 +}
1.81 +
1.82 +inline bool os::uses_stack_guard_pages() {
1.83 + return true;
1.84 +}
1.85 +
1.86 +inline bool os::allocate_stack_guard_pages() {
1.87 + assert(uses_stack_guard_pages(), "sanity check");
1.88 + return true;
1.89 +}
1.90 +
1.91 +
1.92 +// On Linux, reservations are made on a page by page basis, nothing to do.
1.93 +inline void os::pd_split_reserved_memory(char *base, size_t size,
1.94 + size_t split, bool realloc) {
1.95 +}
1.96 +
1.97 +
1.98 +// Bang the shadow pages if they need to be touched to be mapped.
1.99 +inline void os::bang_stack_shadow_pages() {
1.100 +}
1.101 +
1.102 +inline void os::dll_unload(void *lib) {
1.103 + ::dlclose(lib);
1.104 +}
1.105 +
1.106 +inline const int os::default_file_open_flags() { return 0;}
1.107 +
1.108 +inline DIR* os::opendir(const char* dirname)
1.109 +{
1.110 + assert(dirname != NULL, "just checking");
1.111 + return ::opendir(dirname);
1.112 +}
1.113 +
1.114 +inline int os::readdir_buf_size(const char *path)
1.115 +{
1.116 + return NAME_MAX + sizeof(dirent) + 1;
1.117 +}
1.118 +
1.119 +inline jlong os::lseek(int fd, jlong offset, int whence) {
1.120 + return (jlong) ::lseek64(fd, offset, whence);
1.121 +}
1.122 +
1.123 +inline int os::fsync(int fd) {
1.124 + return ::fsync(fd);
1.125 +}
1.126 +
1.127 +inline char* os::native_path(char *path) {
1.128 + return path;
1.129 +}
1.130 +
1.131 +inline int os::ftruncate(int fd, jlong length) {
1.132 + return ::ftruncate64(fd, length);
1.133 +}
1.134 +
1.135 +inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
1.136 +{
1.137 + dirent* p;
1.138 + int status;
1.139 + assert(dirp != NULL, "just checking");
1.140 +
1.141 + // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
1.142 + // version. Here is the doc for this function:
1.143 + // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
1.144 +
1.145 + if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
1.146 + errno = status;
1.147 + return NULL;
1.148 + } else
1.149 + return p;
1.150 +}
1.151 +
1.152 +inline int os::closedir(DIR *dirp) {
1.153 + assert(dirp != NULL, "argument is NULL");
1.154 + return ::closedir(dirp);
1.155 +}
1.156 +
1.157 +// macros for restartable system calls
1.158 +
1.159 +#define RESTARTABLE(_cmd, _result) do { \
1.160 + _result = _cmd; \
1.161 + } while(((int)_result == OS_ERR) && (errno == EINTR))
1.162 +
1.163 +#define RESTARTABLE_RETURN_INT(_cmd) do { \
1.164 + int _result; \
1.165 + RESTARTABLE(_cmd, _result); \
1.166 + return _result; \
1.167 +} while(false)
1.168 +
1.169 +inline bool os::numa_has_static_binding() { return true; }
1.170 +inline bool os::numa_has_group_homing() { return false; }
1.171 +
1.172 +inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
1.173 + size_t res;
1.174 + RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
1.175 + return res;
1.176 +}
1.177 +
1.178 +inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
1.179 + size_t res;
1.180 + RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
1.181 + return res;
1.182 +}
1.183 +
1.184 +inline int os::close(int fd) {
1.185 + return ::close(fd);
1.186 +}
1.187 +
1.188 +inline int os::socket_close(int fd) {
1.189 + return ::close(fd);
1.190 +}
1.191 +
1.192 +inline int os::socket(int domain, int type, int protocol) {
1.193 + return ::socket(domain, type, protocol);
1.194 +}
1.195 +
1.196 +inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
1.197 + RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
1.198 +}
1.199 +
1.200 +inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
1.201 + RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
1.202 +}
1.203 +
1.204 +inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
1.205 + return os::send(fd, buf, nBytes, flags);
1.206 +}
1.207 +
1.208 +inline int os::timeout(int fd, long timeout) {
1.209 + julong prevtime,newtime;
1.210 + struct timeval t;
1.211 +
1.212 + gettimeofday(&t, NULL);
1.213 + prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
1.214 +
1.215 + for(;;) {
1.216 + struct pollfd pfd;
1.217 +
1.218 + pfd.fd = fd;
1.219 + pfd.events = POLLIN | POLLERR;
1.220 +
1.221 + int res = ::poll(&pfd, 1, timeout);
1.222 +
1.223 + if (res == OS_ERR && errno == EINTR) {
1.224 +
1.225 + // On Linux any value < 0 means "forever"
1.226 +
1.227 + if(timeout >= 0) {
1.228 + gettimeofday(&t, NULL);
1.229 + newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
1.230 + timeout -= newtime - prevtime;
1.231 + if(timeout <= 0)
1.232 + return OS_OK;
1.233 + prevtime = newtime;
1.234 + }
1.235 + } else
1.236 + return res;
1.237 + }
1.238 +}
1.239 +
1.240 +inline int os::listen(int fd, int count) {
1.241 + return ::listen(fd, count);
1.242 +}
1.243 +
1.244 +inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
1.245 + RESTARTABLE_RETURN_INT(::connect(fd, him, len));
1.246 +}
1.247 +
1.248 +inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
1.249 + // Linux doc says this can't return EINTR, unlike accept() on Solaris.
1.250 + // But see attachListener_linux.cpp, LinuxAttachListener::dequeue().
1.251 + return (int)::accept(fd, him, len);
1.252 +}
1.253 +
1.254 +inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
1.255 + sockaddr* from, socklen_t* fromlen) {
1.256 + RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
1.257 +}
1.258 +
1.259 +inline int os::sendto(int fd, char* buf, size_t len, uint flags,
1.260 + struct sockaddr* to, socklen_t tolen) {
1.261 + RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
1.262 +}
1.263 +
1.264 +inline int os::socket_shutdown(int fd, int howto) {
1.265 + return ::shutdown(fd, howto);
1.266 +}
1.267 +
1.268 +inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
1.269 + return ::bind(fd, him, len);
1.270 +}
1.271 +
1.272 +inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
1.273 + return ::getsockname(fd, him, len);
1.274 +}
1.275 +
1.276 +inline int os::get_host_name(char* name, int namelen) {
1.277 + return ::gethostname(name, namelen);
1.278 +}
1.279 +
1.280 +inline struct hostent* os::get_host_by_name(char* name) {
1.281 + return ::gethostbyname(name);
1.282 +}
1.283 +
1.284 +inline int os::get_sock_opt(int fd, int level, int optname,
1.285 + char* optval, socklen_t* optlen) {
1.286 + return ::getsockopt(fd, level, optname, optval, optlen);
1.287 +}
1.288 +
1.289 +inline int os::set_sock_opt(int fd, int level, int optname,
1.290 + const char* optval, socklen_t optlen) {
1.291 + return ::setsockopt(fd, level, optname, optval, optlen);
1.292 +}
1.293 +
1.294 +#endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP
