1 /*
2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef OS_LINUX_OS_LINUX_INLINE_HPP
26 #define OS_LINUX_OS_LINUX_INLINE_HPP
27
28 #include "runtime/os.hpp"
29 #include "os_posix.inline.hpp"
30
31 // System includes
32
33 #include <unistd.h>
34 #include <sys/socket.h>
35 #include <poll.h>
36 #include <netdb.h>
37
uses_stack_guard_pages()38 inline bool os::uses_stack_guard_pages() {
39 return true;
40 }
41
must_commit_stack_guard_pages()42 inline bool os::must_commit_stack_guard_pages() {
43 assert(uses_stack_guard_pages(), "sanity check");
44 return true;
45 }
46
47 // Bang the shadow pages if they need to be touched to be mapped.
map_stack_shadow_pages(address sp)48 inline void os::map_stack_shadow_pages(address sp) {
49 }
50
dll_unload(void * lib)51 inline void os::dll_unload(void *lib) {
52 ::dlclose(lib);
53 }
54
lseek(int fd,jlong offset,int whence)55 inline jlong os::lseek(int fd, jlong offset, int whence) {
56 return (jlong) ::lseek64(fd, offset, whence);
57 }
58
fsync(int fd)59 inline int os::fsync(int fd) {
60 return ::fsync(fd);
61 }
62
ftruncate(int fd,jlong length)63 inline int os::ftruncate(int fd, jlong length) {
64 return ::ftruncate64(fd, length);
65 }
66
67 // macros for restartable system calls
68
69 #define RESTARTABLE(_cmd, _result) do { \
70 _result = _cmd; \
71 } while(((int)_result == OS_ERR) && (errno == EINTR))
72
73 #define RESTARTABLE_RETURN_INT(_cmd) do { \
74 int _result; \
75 RESTARTABLE(_cmd, _result); \
76 return _result; \
77 } while(false)
78
numa_has_static_binding()79 inline bool os::numa_has_static_binding() { return true; }
numa_has_group_homing()80 inline bool os::numa_has_group_homing() { return false; }
81
write(int fd,const void * buf,unsigned int nBytes)82 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
83 size_t res;
84 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
85 return res;
86 }
87
close(int fd)88 inline int os::close(int fd) {
89 return ::close(fd);
90 }
91
socket_close(int fd)92 inline int os::socket_close(int fd) {
93 return ::close(fd);
94 }
95
socket(int domain,int type,int protocol)96 inline int os::socket(int domain, int type, int protocol) {
97 return ::socket(domain, type, protocol);
98 }
99
recv(int fd,char * buf,size_t nBytes,uint flags)100 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
101 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
102 }
103
send(int fd,char * buf,size_t nBytes,uint flags)104 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
105 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
106 }
107
raw_send(int fd,char * buf,size_t nBytes,uint flags)108 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
109 return os::send(fd, buf, nBytes, flags);
110 }
111
connect(int fd,struct sockaddr * him,socklen_t len)112 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
113 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
114 }
115
get_host_by_name(char * name)116 inline struct hostent* os::get_host_by_name(char* name) {
117 return ::gethostbyname(name);
118 }
119
supports_monotonic_clock()120 inline bool os::supports_monotonic_clock() {
121 return os::Posix::supports_monotonic_clock();
122 }
123
exit(int num)124 inline void os::exit(int num) {
125 ::exit(num);
126 }
127
128 #endif // OS_LINUX_OS_LINUX_INLINE_HPP
129