/*
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP
#define OS_LINUX_VM_OS_LINUX_INLINE_HPP
#include "runtime/atomic.hpp"
#include "runtime/os.hpp"
#ifdef TARGET_OS_ARCH_linux_x86
# include "atomic_linux_x86.inline.hpp"
# include "orderAccess_linux_x86.inline.hpp"
#endif
#ifdef TARGET_OS_ARCH_linux_sparc
# include "atomic_linux_sparc.inline.hpp"
# include "orderAccess_linux_sparc.inline.hpp"
#endif
#ifdef TARGET_OS_ARCH_linux_zero
# include "atomic_linux_zero.inline.hpp"
# include "orderAccess_linux_zero.inline.hpp"
#endif
#ifdef TARGET_OS_ARCH_linux_arm
# include "atomic_linux_arm.inline.hpp"
# include "orderAccess_linux_arm.inline.hpp"
#endif
#ifdef TARGET_OS_ARCH_linux_ppc
# include "atomic_linux_ppc.inline.hpp"
# include "orderAccess_linux_ppc.inline.hpp"
#endif
// System includes
#include <unistd.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <netdb.h>
inline void* os::thread_local_storage_at(int index) {
return pthread_getspecific((pthread_key_t)index);
}
inline const char* os::file_separator() {
return "/";
}
inline const char* os::line_separator() {
return "\n";
}
inline const char* os::path_separator() {
return ":";
}
inline const char* os::jlong_format_specifier() {
return "%lld";
}
inline const char* os::julong_format_specifier() {
return "%llu";
}
// File names are case-sensitive on windows only
inline int os::file_name_strcmp(const char* s1, const char* s2) {
return strcmp(s1, s2);
}
inline bool os::obsolete_option(const JavaVMOption *option) {
return false;
}
inline bool os::uses_stack_guard_pages() {
return true;
}
inline bool os::allocate_stack_guard_pages() {
assert(uses_stack_guard_pages(), "sanity check");
return true;
}
// On Linux, reservations are made on a page by page basis, nothing to do.
inline void os::pd_split_reserved_memory(char *base, size_t size,
size_t split, bool realloc) {
}
// Bang the shadow pages if they need to be touched to be mapped.
inline void os::bang_stack_shadow_pages() {
}
inline void os::dll_unload(void *lib) {
::dlclose(lib);
}
inline const int os::default_file_open_flags() { return 0;}
inline DIR* os::opendir(const char* dirname)
{
assert(dirname != NULL, "just checking");
return ::opendir(dirname);
}
inline int os::readdir_buf_size(const char *path)
{
return NAME_MAX + sizeof(dirent) + 1;
}
inline jlong os::lseek(int fd, jlong offset, int whence) {
return (jlong) ::lseek64(fd, offset, whence);
}
inline int os::fsync(int fd) {
return ::fsync(fd);
}
inline char* os::native_path(char *path) {
return path;
}
inline int os::ftruncate(int fd, jlong length) {
return ::ftruncate64(fd, length);
}
inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
{
dirent* p;
int status;
assert(dirp != NULL, "just checking");
// NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
// version. Here is the doc for this function:
// http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
errno = status;
return NULL;
} else
return p;
}
inline int os::closedir(DIR *dirp) {
assert(dirp != NULL, "argument is NULL");
return ::closedir(dirp);
}
// macros for restartable system calls
#define RESTARTABLE(_cmd, _result) do { \
_result = _cmd; \
} while(((int)_result == OS_ERR) && (errno == EINTR))
#define RESTARTABLE_RETURN_INT(_cmd) do { \
int _result; \
RESTARTABLE(_cmd, _result); \
return _result; \
} while(false)
inline bool os::numa_has_static_binding() { return true; }
inline bool os::numa_has_group_homing() { return false; }
inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
size_t res;
RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
return res;
}
inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
size_t res;
RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
return res;
}
inline int os::close(int fd) {
return ::close(fd);
}
inline int os::socket_close(int fd) {
return ::close(fd);
}
inline int os::socket(int domain, int type, int protocol) {
return ::socket(domain, type, protocol);
}
inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
}
inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
}
inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
return os::send(fd, buf, nBytes, flags);
}
inline int os::timeout(int fd, long timeout) {
julong prevtime,newtime;
struct timeval t;
gettimeofday(&t, NULL);
prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
for(;;) {
struct pollfd pfd;
pfd.fd = fd;
pfd.events = POLLIN | POLLERR;
int res = ::poll(&pfd, 1, timeout);
if (res == OS_ERR && errno == EINTR) {
// On Linux any value < 0 means "forever"
if(timeout >= 0) {
gettimeofday(&t, NULL);
newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
timeout -= newtime - prevtime;
if(timeout <= 0)
return OS_OK;
prevtime = newtime;
}
} else
return res;
}
}
inline int os::listen(int fd, int count) {
return ::listen(fd, count);
}
inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
RESTARTABLE_RETURN_INT(::connect(fd, him, len));
}
inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
// Linux doc says this can't return EINTR, unlike accept() on Solaris.
// But see attachListener_linux.cpp, LinuxAttachListener::dequeue().
return (int)::accept(fd, him, len);
}
inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
sockaddr* from, socklen_t* fromlen) {
RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
}
inline int os::sendto(int fd, char* buf, size_t len, uint flags,
struct sockaddr* to, socklen_t tolen) {
RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
}
inline int os::socket_shutdown(int fd, int howto) {
return ::shutdown(fd, howto);
}
inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
return ::bind(fd, him, len);
}
inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
return ::getsockname(fd, him, len);
}
inline int os::get_host_name(char* name, int namelen) {
return ::gethostname(name, namelen);
}
inline struct hostent* os::get_host_by_name(char* name) {
return ::gethostbyname(name);
}
inline int os::get_sock_opt(int fd, int level, int optname,
char* optval, socklen_t* optlen) {
return ::getsockopt(fd, level, optname, optval, optlen);
}
inline int os::set_sock_opt(int fd, int level, int optname,
const char* optval, socklen_t optlen) {
return ::setsockopt(fd, level, optname, optval, optlen);
}
#endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP