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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, int nBytes, int flags) {
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RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, (unsigned int) flags));
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}
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inline int os::send(int fd, char *buf, int nBytes, int flags) {
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RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, (unsigned int) flags));
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}
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inline int os::raw_send(int fd, char *buf, int nBytes, int 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, int 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, int *len) {
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// This cast is from int to unsigned int on bsd. Since we
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// only pass the parameter "len" around the vm and don't try to
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// fetch it's value, this cast is safe for now. The java.net group
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// may need and want to change this interface someday if socklen_t goes
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// to 64 bits on some platform that we support.
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// At least OpenBSD and FreeBSD can return EINTR from accept.
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RESTARTABLE_RETURN_INT(::accept(fd, him, (socklen_t *)len));
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}
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inline int os::recvfrom(int fd, char *buf, int nBytes, int flags,
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sockaddr *from, int *fromlen) {
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RESTARTABLE_RETURN_INT(::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen));
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}
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inline int os::sendto(int fd, char *buf, int len, int flags,
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struct sockaddr *to, int tolen) {
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RESTARTABLE_RETURN_INT(::sendto(fd, buf, len, (unsigned int) 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, int 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, int *len){
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return ::getsockname(fd, him, (socklen_t *)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, int* optlen){
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return ::getsockopt(fd, level, optname, optval, (socklen_t *)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, int 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
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