Mercurial > hg > truffle
view src/os/linux/vm/os_linux.inline.hpp @ 16524:a08a58d0736b
[SPARC] Emit compareAndSwap for AtomicInteger and AtomicLong, Removing o7 register from usable ones, as this register is always overwritten, when using Call or JumpAndLink instructions in SPARC, even callee does not overwrite explicitly, implicit exception is defined when doing integer division, parameter constraint narrowed to only register on Unary2Op, Fix SPARCTestOp, as it did a compare instead of an and with condition codes
author | Stefan Anzinger <stefan.anzinger@gmail.com> |
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date | Tue, 15 Jul 2014 19:07:29 -0700 |
parents | 4ca6dc0799b6 |
children | 7848fc12602b |
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/* * 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