149 lines
4.4 KiB
C++
149 lines
4.4 KiB
C++
/*
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* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2018 SAP SE. 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_AIX_OS_AIX_INLINE_HPP
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#define OS_AIX_OS_AIX_INLINE_HPP
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#include "runtime/os.hpp"
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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 <poll.h>
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#include <sys/ioctl.h>
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#include <netdb.h>
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// File names are case-insensitive on windows only.
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inline int os::file_name_strncmp(const char* s1, const char* s2, size_t num) {
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return strncmp(s1, s2, num);
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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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// Whether or not calling code should/can commit/uncommit stack pages
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// before guarding them. Answer for AIX is definitly no, because memory
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// is automatically committed on touch.
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inline bool os::must_commit_stack_guard_pages() {
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assert(uses_stack_guard_pages(), "sanity check");
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return false;
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}
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// On Aix, reservations are made on a page by page basis, nothing to do.
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inline void os::pd_split_reserved_memory(char *base, size_t size,
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size_t split, bool realloc) {
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// TODO: Determine whether Sys V memory is split. If yes, we need to treat
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// this the same way Windows treats its VirtualAlloc allocations.
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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::map_stack_shadow_pages(address sp) {
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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 jlong os::lseek(int fd, jlong offset, int whence) {
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return (jlong) ::lseek64(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 int os::ftruncate(int fd, jlong length) {
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return ::ftruncate64(fd, length);
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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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// We don't have NUMA support on Aix, but we need this for compilation.
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inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; }
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inline bool os::numa_has_group_homing() { ShouldNotReachHere(); return false; }
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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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return ::close(fd);
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}
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inline int os::socket_close(int fd) {
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return ::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, size_t nBytes, uint flags) {
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RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
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}
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inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
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RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
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}
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inline int os::raw_send(int fd, char *buf, size_t nBytes, uint flags) {
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return os::send(fd, buf, nBytes, flags);
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}
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inline int os::connect(int fd, struct sockaddr *him, socklen_t len) {
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RESTARTABLE_RETURN_INT(::connect(fd, him, len));
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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 bool os::supports_monotonic_clock() {
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// mread_real_time() is monotonic on AIX (see os::javaTimeNanos() comments)
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return true;
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}
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inline void os::exit(int num) {
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::exit(num);
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}
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#endif // OS_AIX_OS_AIX_INLINE_HPP
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