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_BSD_OS_BSD_INLINE_HPP
26 #define OS_BSD_OS_BSD_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
38 // File names are case-insensitive on windows only
file_name_strncmp(const char * s1,const char * s2,size_t num)39 inline int os::file_name_strncmp(const char* s1, const char* s2, size_t num) {
40 return strncmp(s1, s2, num);
41 }
42
uses_stack_guard_pages()43 inline bool os::uses_stack_guard_pages() {
44 return true;
45 }
46
must_commit_stack_guard_pages()47 inline bool os::must_commit_stack_guard_pages() {
48 assert(uses_stack_guard_pages(), "sanity check");
49 #if !defined(__FreeBSD__) || __FreeBSD__ < 5
50 // Since FreeBSD 4 uses malloc() for allocating the thread stack
51 // there is no need to do anything extra to allocate the guard pages
52 return false;
53 #else
54 // FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks.
55 // Must 'allocate' them or guard pages are ignored.
56 return true;
57 #endif
58 }
59
60
61 // On Bsd, reservations are made on a page by page basis, nothing to do.
pd_split_reserved_memory(char * base,size_t size,size_t split,bool realloc)62 inline void os::pd_split_reserved_memory(char *base, size_t size,
63 size_t split, bool realloc) {
64 }
65
66
67 // Bang the shadow pages if they need to be touched to be mapped.
map_stack_shadow_pages(address sp)68 inline void os::map_stack_shadow_pages(address sp) {
69 }
70
dll_unload(void * lib)71 inline void os::dll_unload(void *lib) {
72 ::dlclose(lib);
73 }
74
default_file_open_flags()75 inline const int os::default_file_open_flags() { return 0;}
76
lseek(int fd,jlong offset,int whence)77 inline jlong os::lseek(int fd, jlong offset, int whence) {
78 return (jlong) ::lseek(fd, offset, whence);
79 }
80
fsync(int fd)81 inline int os::fsync(int fd) {
82 return ::fsync(fd);
83 }
84
ftruncate(int fd,jlong length)85 inline int os::ftruncate(int fd, jlong length) {
86 return ::ftruncate(fd, length);
87 }
88
89 // macros for restartable system calls
90
91 #define RESTARTABLE(_cmd, _result) do { \
92 _result = _cmd; \
93 } while(((int)_result == OS_ERR) && (errno == EINTR))
94
95 #define RESTARTABLE_RETURN_INT(_cmd) do { \
96 int _result; \
97 RESTARTABLE(_cmd, _result); \
98 return _result; \
99 } while(false)
100
numa_has_static_binding()101 inline bool os::numa_has_static_binding() { return true; }
numa_has_group_homing()102 inline bool os::numa_has_group_homing() { return false; }
103
write(int fd,const void * buf,unsigned int nBytes)104 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
105 size_t res;
106 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
107 return res;
108 }
109
close(int fd)110 inline int os::close(int fd) {
111 return ::close(fd);
112 }
113
socket_close(int fd)114 inline int os::socket_close(int fd) {
115 return ::close(fd);
116 }
117
socket(int domain,int type,int protocol)118 inline int os::socket(int domain, int type, int protocol) {
119 return ::socket(domain, type, protocol);
120 }
121
recv(int fd,char * buf,size_t nBytes,uint flags)122 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
123 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
124 }
125
send(int fd,char * buf,size_t nBytes,uint flags)126 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
127 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
128 }
129
raw_send(int fd,char * buf,size_t nBytes,uint flags)130 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
131 return os::send(fd, buf, nBytes, flags);
132 }
133
connect(int fd,struct sockaddr * him,socklen_t len)134 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
135 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
136 }
137
get_host_by_name(char * name)138 inline struct hostent* os::get_host_by_name(char* name) {
139 return ::gethostbyname(name);
140 }
141
supports_monotonic_clock()142 inline bool os::supports_monotonic_clock() {
143 #ifdef __APPLE__
144 return true;
145 #else
146 return Bsd::_clock_gettime != NULL;
147 #endif
148 }
149
exit(int num)150 inline void os::exit(int num) {
151 ::exit(num);
152 }
153
154 #endif // OS_BSD_OS_BSD_INLINE_HPP
155