| /* |
| * Copyright (c) 1999, 2013, 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.inline.hpp" |
| #include "runtime/os.hpp" |
| |
| #ifdef TARGET_OS_ARCH_linux_x86 |
| # include "orderAccess_linux_x86.inline.hpp" |
| #endif |
| #ifdef TARGET_OS_ARCH_linux_sparc |
| # include "orderAccess_linux_sparc.inline.hpp" |
| #endif |
| #ifdef TARGET_OS_ARCH_linux_zero |
| # include "orderAccess_linux_zero.inline.hpp" |
| #endif |
| #ifdef TARGET_OS_ARCH_linux_arm |
| # include "orderAccess_linux_arm.inline.hpp" |
| #endif |
| #ifdef TARGET_OS_ARCH_linux_ppc |
| # 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 ":"; |
| } |
| |
| // 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 |