author | phh |
Wed, 21 Dec 2011 15:48:16 -0500 | |
changeset 11256 | 025cd1741566 |
parent 10565 | dc90c239f4ec |
child 13195 | be27e1b6a4b9 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef OS_BSD_VM_OS_BSD_INLINE_HPP |
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#define OS_BSD_VM_OS_BSD_INLINE_HPP |
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#include "runtime/atomic.hpp" |
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#include "runtime/os.hpp" |
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#ifdef TARGET_OS_ARCH_bsd_x86 |
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# include "atomic_bsd_x86.inline.hpp" |
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# include "orderAccess_bsd_x86.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_ARCH_bsd_zero |
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# include "atomic_bsd_zero.inline.hpp" |
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# include "orderAccess_bsd_zero.inline.hpp" |
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#endif |
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// System includes |
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#include <unistd.h> |
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#include <sys/socket.h> |
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#include <sys/poll.h> |
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#include <netdb.h> |
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inline void* os::thread_local_storage_at(int index) { |
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return pthread_getspecific((pthread_key_t)index); |
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} |
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inline const char* os::file_separator() { |
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return "/"; |
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} |
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inline const char* os::line_separator() { |
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return "\n"; |
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} |
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inline const char* os::path_separator() { |
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return ":"; |
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} |
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inline const char* os::jlong_format_specifier() { |
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return "%lld"; |
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} |
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inline const char* os::julong_format_specifier() { |
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return "%llu"; |
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} |
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// File names are case-sensitive on windows only |
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inline int os::file_name_strcmp(const char* s1, const char* s2) { |
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return strcmp(s1, s2); |
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} |
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inline bool os::obsolete_option(const JavaVMOption *option) { |
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return false; |
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} |
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inline bool os::uses_stack_guard_pages() { |
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return true; |
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} |
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inline bool os::allocate_stack_guard_pages() { |
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assert(uses_stack_guard_pages(), "sanity check"); |
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#if !defined(__FreeBSD__) || __FreeBSD__ < 5 |
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// Since FreeBSD 4 uses malloc() for allocating the thread stack |
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// there is no need to do anything extra to allocate the guard pages |
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return false; |
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#else |
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// FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks. |
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// Must 'allocate' them or guard pages are ignored. |
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return true; |
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#endif |
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} |
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// On Bsd, reservations are made on a page by page basis, nothing to do. |
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inline void os::split_reserved_memory(char *base, size_t size, |
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size_t split, bool realloc) { |
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} |
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// Bang the shadow pages if they need to be touched to be mapped. |
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inline void os::bang_stack_shadow_pages() { |
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} |
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inline void os::dll_unload(void *lib) { |
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::dlclose(lib); |
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} |
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inline const int os::default_file_open_flags() { return 0;} |
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inline DIR* os::opendir(const char* dirname) |
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{ |
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assert(dirname != NULL, "just checking"); |
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return ::opendir(dirname); |
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} |
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inline int os::readdir_buf_size(const char *path) |
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{ |
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return NAME_MAX + sizeof(dirent) + 1; |
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} |
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inline jlong os::lseek(int fd, jlong offset, int whence) { |
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return (jlong) ::lseek(fd, offset, whence); |
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} |
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inline int os::fsync(int fd) { |
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return ::fsync(fd); |
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} |
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inline char* os::native_path(char *path) { |
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return path; |
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} |
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inline int os::ftruncate(int fd, jlong length) { |
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return ::ftruncate(fd, length); |
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} |
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inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) |
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{ |
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dirent* p; |
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int status; |
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assert(dirp != NULL, "just checking"); |
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// NOTE: Bsd readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX |
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// version. Here is the doc for this function: |
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// http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html |
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if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { |
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errno = status; |
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return NULL; |
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} else |
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return p; |
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} |
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inline int os::closedir(DIR *dirp) { |
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assert(dirp != NULL, "argument is NULL"); |
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return ::closedir(dirp); |
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} |
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// macros for restartable system calls |
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#define RESTARTABLE(_cmd, _result) do { \ |
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_result = _cmd; \ |
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} while(((int)_result == OS_ERR) && (errno == EINTR)) |
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#define RESTARTABLE_RETURN_INT(_cmd) do { \ |
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int _result; \ |
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RESTARTABLE(_cmd, _result); \ |
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return _result; \ |
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} while(false) |
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inline bool os::numa_has_static_binding() { return true; } |
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inline bool os::numa_has_group_homing() { return false; } |
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inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { |
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size_t res; |
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RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); |
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return res; |
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} |
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inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { |
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size_t res; |
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RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); |
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return res; |
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} |
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inline int os::close(int fd) { |
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RESTARTABLE_RETURN_INT(::close(fd)); |
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} |
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inline int os::socket_close(int fd) { |
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RESTARTABLE_RETURN_INT(::close(fd)); |
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} |
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inline int os::socket(int domain, int type, int protocol) { |
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return ::socket(domain, type, protocol); |
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} |
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inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { |
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RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); |
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} |
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inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { |
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RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); |
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} |
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inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { |
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return os::send(fd, buf, nBytes, flags); |
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} |
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inline int os::timeout(int fd, long timeout) { |
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julong prevtime,newtime; |
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struct timeval t; |
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gettimeofday(&t, NULL); |
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prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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for(;;) { |
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struct pollfd pfd; |
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pfd.fd = fd; |
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pfd.events = POLLIN | POLLERR; |
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int res = ::poll(&pfd, 1, timeout); |
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if (res == OS_ERR && errno == EINTR) { |
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// On Bsd any value < 0 means "forever" |
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if(timeout >= 0) { |
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gettimeofday(&t, NULL); |
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newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; |
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timeout -= newtime - prevtime; |
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if(timeout <= 0) |
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return OS_OK; |
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prevtime = newtime; |
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} |
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} else |
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return res; |
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} |
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} |
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inline int os::listen(int fd, int count) { |
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return ::listen(fd, count); |
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} |
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inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { |
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RESTARTABLE_RETURN_INT(::connect(fd, him, len)); |
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} |
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inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { |
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// At least OpenBSD and FreeBSD can return EINTR from accept. |
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RESTARTABLE_RETURN_INT(::accept(fd, him, len)); |
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} |
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inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, |
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sockaddr* from, socklen_t* fromlen) { |
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RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); |
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} |
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inline int os::sendto(int fd, char* buf, size_t len, uint flags, |
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struct sockaddr *to, socklen_t tolen) { |
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RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); |
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} |
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inline int os::socket_shutdown(int fd, int howto) { |
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return ::shutdown(fd, howto); |
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} |
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inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { |
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return ::bind(fd, him, len); |
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} |
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inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { |
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return ::getsockname(fd, him, len); |
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} |
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inline int os::get_host_name(char* name, int namelen) { |
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return ::gethostname(name, namelen); |
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} |
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inline struct hostent* os::get_host_by_name(char* name) { |
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return ::gethostbyname(name); |
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} |
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inline int os::get_sock_opt(int fd, int level, int optname, |
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char *optval, socklen_t* optlen) { |
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return ::getsockopt(fd, level, optname, optval, optlen); |
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} |
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inline int os::set_sock_opt(int fd, int level, int optname, |
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const char* optval, socklen_t optlen) { |
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return ::setsockopt(fd, level, optname, optval, optlen); |
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} |
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#endif // OS_BSD_VM_OS_BSD_INLINE_HPP |