duke@435: /*
hseigel@4465:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP
stefank@2314: #define OS_LINUX_VM_OS_LINUX_INLINE_HPP
stefank@2314: 
twisti@4318: #include "runtime/atomic.inline.hpp"
stefank@2314: #include "runtime/os.hpp"
twisti@4318: 
stefank@2314: #ifdef TARGET_OS_ARCH_linux_x86
stefank@2314: # include "orderAccess_linux_x86.inline.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_OS_ARCH_linux_sparc
stefank@2314: # include "orderAccess_linux_sparc.inline.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_OS_ARCH_linux_zero
stefank@2314: # include "orderAccess_linux_zero.inline.hpp"
stefank@2314: #endif
bobv@2508: #ifdef TARGET_OS_ARCH_linux_arm
bobv@2508: # include "orderAccess_linux_arm.inline.hpp"
bobv@2508: #endif
bobv@2508: #ifdef TARGET_OS_ARCH_linux_ppc
bobv@2508: # include "orderAccess_linux_ppc.inline.hpp"
bobv@2508: #endif
stefank@2314: 
ikrylov@2322: // System includes
ikrylov@2322: 
ikrylov@2322: #include <unistd.h>
ikrylov@2322: #include <sys/socket.h>
ikrylov@2322: #include <sys/poll.h>
ikrylov@2322: #include <netdb.h>
ikrylov@2322: 
duke@435: inline void* os::thread_local_storage_at(int index) {
duke@435:   return pthread_getspecific((pthread_key_t)index);
duke@435: }
duke@435: 
duke@435: inline const char* os::file_separator() {
duke@435:   return "/";
duke@435: }
duke@435: 
duke@435: inline const char* os::line_separator() {
duke@435:   return "\n";
duke@435: }
duke@435: 
duke@435: inline const char* os::path_separator() {
duke@435:   return ":";
duke@435: }
duke@435: 
duke@435: // File names are case-sensitive on windows only
duke@435: inline int os::file_name_strcmp(const char* s1, const char* s2) {
duke@435:   return strcmp(s1, s2);
duke@435: }
duke@435: 
duke@435: inline bool os::obsolete_option(const JavaVMOption *option) {
duke@435:   return false;
duke@435: }
duke@435: 
duke@435: inline bool os::uses_stack_guard_pages() {
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: inline bool os::allocate_stack_guard_pages() {
duke@435:   assert(uses_stack_guard_pages(), "sanity check");
duke@435:   return true;
duke@435: }
duke@435: 
duke@435: 
duke@435: // On Linux, reservations are made on a page by page basis, nothing to do.
zgu@3900: inline void os::pd_split_reserved_memory(char *base, size_t size,
duke@435:                                       size_t split, bool realloc) {
duke@435: }
duke@435: 
duke@435: 
duke@435: // Bang the shadow pages if they need to be touched to be mapped.
duke@435: inline void os::bang_stack_shadow_pages() {
duke@435: }
duke@435: 
ikrylov@2322: inline void os::dll_unload(void *lib) {
ikrylov@2322:   ::dlclose(lib);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline const int os::default_file_open_flags() { return 0;}
ikrylov@2322: 
duke@435: inline DIR* os::opendir(const char* dirname)
duke@435: {
duke@435:   assert(dirname != NULL, "just checking");
duke@435:   return ::opendir(dirname);
duke@435: }
duke@435: 
duke@435: inline int os::readdir_buf_size(const char *path)
duke@435: {
duke@435:   return NAME_MAX + sizeof(dirent) + 1;
duke@435: }
duke@435: 
ikrylov@2322: inline jlong os::lseek(int fd, jlong offset, int whence) {
ikrylov@2322:   return (jlong) ::lseek64(fd, offset, whence);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::fsync(int fd) {
ikrylov@2322:   return ::fsync(fd);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline char* os::native_path(char *path) {
ikrylov@2322:   return path;
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::ftruncate(int fd, jlong length) {
ikrylov@2322:   return ::ftruncate64(fd, length);
ikrylov@2322: }
ikrylov@2322: 
duke@435: inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
duke@435: {
duke@435:   dirent* p;
duke@435:   int status;
duke@435:   assert(dirp != NULL, "just checking");
duke@435: 
duke@435:   // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
duke@435:   // version. Here is the doc for this function:
duke@435:   // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
duke@435: 
duke@435:   if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
duke@435:     errno = status;
duke@435:     return NULL;
duke@435:   } else
duke@435:     return p;
duke@435: }
duke@435: 
ikrylov@2322: inline int os::closedir(DIR *dirp) {
ikrylov@2322:   assert(dirp != NULL, "argument is NULL");
duke@435:   return ::closedir(dirp);
duke@435: }
duke@435: 
duke@435: // macros for restartable system calls
duke@435: 
duke@435: #define RESTARTABLE(_cmd, _result) do { \
duke@435:     _result = _cmd; \
duke@435:   } while(((int)_result == OS_ERR) && (errno == EINTR))
duke@435: 
duke@435: #define RESTARTABLE_RETURN_INT(_cmd) do { \
duke@435:   int _result; \
duke@435:   RESTARTABLE(_cmd, _result); \
duke@435:   return _result; \
duke@435: } while(false)
iveresov@576: 
iveresov@576: inline bool os::numa_has_static_binding()   { return true; }
iveresov@576: inline bool os::numa_has_group_homing()     { return false;  }
stefank@2314: 
ikrylov@2322: inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
ikrylov@2322:   size_t res;
ikrylov@2322:   RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
ikrylov@2322:   return res;
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
ikrylov@2322:   size_t res;
ikrylov@2322:   RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
ikrylov@2322:   return res;
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::close(int fd) {
ikrylov@2322:   return ::close(fd);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::socket_close(int fd) {
ikrylov@2322:   return ::close(fd);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::socket(int domain, int type, int protocol) {
ikrylov@2322:   return ::socket(domain, type, protocol);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
phh@3344:   RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
phh@3344:   RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
ikrylov@2322:   return os::send(fd, buf, nBytes, flags);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::timeout(int fd, long timeout) {
ikrylov@2322:   julong prevtime,newtime;
ikrylov@2322:   struct timeval t;
ikrylov@2322: 
ikrylov@2322:   gettimeofday(&t, NULL);
ikrylov@2322:   prevtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;
ikrylov@2322: 
ikrylov@2322:   for(;;) {
ikrylov@2322:     struct pollfd pfd;
ikrylov@2322: 
ikrylov@2322:     pfd.fd = fd;
ikrylov@2322:     pfd.events = POLLIN | POLLERR;
ikrylov@2322: 
ikrylov@2322:     int res = ::poll(&pfd, 1, timeout);
ikrylov@2322: 
ikrylov@2322:     if (res == OS_ERR && errno == EINTR) {
ikrylov@2322: 
ikrylov@2322:       // On Linux any value < 0 means "forever"
ikrylov@2322: 
ikrylov@2322:       if(timeout >= 0) {
ikrylov@2322:         gettimeofday(&t, NULL);
ikrylov@2322:         newtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;
ikrylov@2322:         timeout -= newtime - prevtime;
ikrylov@2322:         if(timeout <= 0)
ikrylov@2322:           return OS_OK;
ikrylov@2322:         prevtime = newtime;
ikrylov@2322:       }
ikrylov@2322:     } else
ikrylov@2322:       return res;
ikrylov@2322:   }
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::listen(int fd, int count) {
ikrylov@2322:   return ::listen(fd, count);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
ikrylov@2322:   RESTARTABLE_RETURN_INT(::connect(fd, him, len));
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
phh@3344:   // Linux doc says this can't return EINTR, unlike accept() on Solaris.
phh@3344:   // But see attachListener_linux.cpp, LinuxAttachListener::dequeue().
phh@3344:   return (int)::accept(fd, him, len);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
phh@3344:                         sockaddr* from, socklen_t* fromlen) {
phh@3344:   RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::sendto(int fd, char* buf, size_t len, uint flags,
phh@3344:                       struct sockaddr* to, socklen_t tolen) {
phh@3344:   RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::socket_shutdown(int fd, int howto) {
ikrylov@2322:   return ::shutdown(fd, howto);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
ikrylov@2322:   return ::bind(fd, him, len);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
phh@3344:   return ::getsockname(fd, him, len);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline int os::get_host_name(char* name, int namelen) {
ikrylov@2322:   return ::gethostname(name, namelen);
ikrylov@2322: }
ikrylov@2322: 
phh@3344: inline struct hostent* os::get_host_by_name(char* name) {
ikrylov@2322:   return ::gethostbyname(name);
ikrylov@2322: }
phh@3344: 
ikrylov@2322: inline int os::get_sock_opt(int fd, int level, int optname,
phh@3344:                             char* optval, socklen_t* optlen) {
phh@3344:   return ::getsockopt(fd, level, optname, optval, optlen);
ikrylov@2322: }
ikrylov@2322: 
ikrylov@2322: inline int os::set_sock_opt(int fd, int level, int optname,
phh@3344:                             const char* optval, socklen_t optlen) {
ikrylov@2322:   return ::setsockopt(fd, level, optname, optval, optlen);
ikrylov@2322: }
simonis@4675: 
stefank@2314: #endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP