| /* |
| * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012, 2016 SAP SE. 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_AIX_VM_OS_AIX_INLINE_HPP |
| #define OS_AIX_VM_OS_AIX_INLINE_HPP |
| |
| #include "runtime/os.hpp" |
| |
| // System includes |
| |
| #include <unistd.h> |
| #include <sys/socket.h> |
| #include <poll.h> |
| #include <sys/ioctl.h> |
| #include <netdb.h> |
| |
| // 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; |
| } |
| |
| // Whether or not calling code should/can commit/uncommit stack pages |
| // before guarding them. Answer for AIX is definitly no, because memory |
| // is automatically committed on touch. |
| inline bool os::must_commit_stack_guard_pages() { |
| assert(uses_stack_guard_pages(), "sanity check"); |
| return false; |
| } |
| |
| // On Aix, 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) { |
| // TODO: Determine whether Sys V memory is split. If yes, we need to treat |
| // this the same way Windows treats its VirtualAlloc allocations. |
| } |
| |
| // Bang the shadow pages if they need to be touched to be mapped. |
| inline void os::map_stack_shadow_pages(address sp) { |
| } |
| |
| 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) { |
| // According to aix sys/limits, NAME_MAX must be retrieved at runtime. |
| const long my_NAME_MAX = pathconf(path, _PC_NAME_MAX); |
| return my_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 = NULL; |
| assert(dirp != NULL, "just checking"); |
| |
| // AIX: slightly different from POSIX. |
| // On AIX, readdir_r returns 0 or != 0 and error details in errno. |
| if (::readdir_r(dirp, dbuf, &p) != 0) { |
| return NULL; |
| } |
| 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) |
| |
| // We don't have NUMA support on Aix, but we need this for compilation. |
| inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; } |
| inline bool os::numa_has_group_homing() { ShouldNotReachHere(); 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::connect(int fd, struct sockaddr *him, socklen_t len) { |
| RESTARTABLE_RETURN_INT(::connect(fd, him, len)); |
| } |
| |
| inline struct hostent* os::get_host_by_name(char* name) { |
| return ::gethostbyname(name); |
| } |
| |
| inline bool os::supports_monotonic_clock() { |
| // mread_real_time() is monotonic on AIX (see os::javaTimeNanos() comments) |
| return true; |
| } |
| |
| inline void os::exit(int num) { |
| ::exit(num); |
| } |
| |
| #endif // OS_AIX_VM_OS_AIX_INLINE_HPP |