1 /*
2 * Copyright (c) 1997, 2013, 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_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
26 #define OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
27
28 #include "runtime/atomic.inline.hpp"
29 #include "runtime/orderAccess.inline.hpp"
30 #include "runtime/os.hpp"
31
32 // System includes
33 #include <sys/param.h>
34 #include <dlfcn.h>
35 #include <sys/socket.h>
36 #include <sys/poll.h>
37 #include <sys/filio.h>
38 #include <unistd.h>
39 #include <netdb.h>
40 #include <setjmp.h>
41
42 inline const char* os::file_separator() { return "/"; }
43 inline const char* os::line_separator() { return "\n"; }
44 inline const char* os::path_separator() { return ":"; }
45
46 // File names are case-sensitive on windows only
47 inline int os::file_name_strcmp(const char* s1, const char* s2) {
48 return strcmp(s1, s2);
49 }
50
51 inline bool os::uses_stack_guard_pages() {
52 return true;
53 }
54
55 inline bool os::allocate_stack_guard_pages() {
56 assert(uses_stack_guard_pages(), "sanity check");
57 int r = thr_main() ;
58 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
59 return r;
60 }
61
62
63 // On Solaris, reservations are made on a page by page basis, nothing to do.
64 inline void os::pd_split_reserved_memory(char *base, size_t size,
65 size_t split, bool realloc) {
66 }
67
68
69 // Bang the shadow pages if they need to be touched to be mapped.
70 inline void os::bang_stack_shadow_pages() {
71 }
72 inline void os::dll_unload(void *lib) { ::dlclose(lib); }
73
74 inline DIR* os::opendir(const char* dirname) {
75 assert(dirname != NULL, "just checking");
76 return ::opendir(dirname);
77 }
78
79 inline int os::readdir_buf_size(const char *path) {
80 int size = pathconf(path, _PC_NAME_MAX);
81 return (size < 0 ? MAXPATHLEN : size) + sizeof(dirent) + 1;
82 }
83
84 inline struct dirent* os::readdir(DIR* dirp, dirent* dbuf) {
85 assert(dirp != NULL, "just checking");
86 #if defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
87 dirent* p;
88 int status;
89
90 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
91 errno = status;
92 return NULL;
93 } else
94 return p;
95 #else // defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
96 return ::readdir_r(dirp, dbuf);
97 #endif // defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
98 }
99
100 inline int os::closedir(DIR *dirp) {
101 assert(dirp != NULL, "argument is NULL");
102 return ::closedir(dirp);
103 }
104
105 //////////////////////////////////////////////////////////////////////////////
106 ////////////////////////////////////////////////////////////////////////////////
107
108 // macros for interruptible io and system calls and system call restarting
109
110 #define _INTERRUPTIBLE(_setup, _cmd, _result, _thread, _clear, _before, _after, _int_enable) \
111 do { \
112 _setup; \
113 _before; \
114 OSThread* _osthread = _thread->osthread(); \
115 if (_int_enable && _thread->has_last_Java_frame()) { \
116 /* this is java interruptible io stuff */ \
117 if (os::is_interrupted(_thread, _clear)) { \
118 os::Solaris::bump_interrupted_before_count(); \
119 _result = OS_INTRPT; \
120 } else { \
121 /* _cmd always expands to an assignment to _result */ \
122 if ((_cmd) < 0 && errno == EINTR \
123 && os::is_interrupted(_thread, _clear)) { \
124 os::Solaris::bump_interrupted_during_count(); \
125 _result = OS_INTRPT; \
126 } \
127 } \
128 } else { \
129 /* this is normal blocking io stuff */ \
130 _cmd; \
131 } \
132 _after; \
133 } while(false)
134
135 // Interruptible io support + restarting of interrupted system calls
136
137 #ifndef ASSERT
138
139 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
140 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO); \
141 } while((_result == OS_ERR) && (errno == EINTR))
142
143 #else
144
145 // This adds an assertion that it is only called from thread_in_native
146 // The call overhead is skipped for performance in product mode
147 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
148 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO ); \
149 } while((_result == OS_ERR) && (errno == EINTR))
150
151 #endif
152
153 // Used for calls from _thread_in_vm, not from _thread_in_native
154 #define INTERRUPTIBLE_VM(_cmd, _result, _clear) do { \
155 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible(_thread), UseVMInterruptibleIO ); \
156 } while((_result == OS_ERR) && (errno == EINTR))
157
158 /* Use NORESTART when the system call cannot return EINTR, when something other
159 than a system call is being invoked, or when the caller must do EINTR
160 handling. */
161
162 #ifndef ASSERT
163
164 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
165 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO)
166
167 #else
168
169 // This adds an assertion that it is only called from thread_in_native
170 // The call overhead is skipped for performance in product mode
171 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
172 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO )
173
174 #endif
175
176 // Don't attend to UseVMInterruptibleIO. Always allow interruption.
177 // Also assumes that it is called from the _thread_blocked state.
178 // Used by os_sleep().
179
180 #define INTERRUPTIBLE_NORESTART_VM_ALWAYS(_cmd, _result, _thread, _clear) \
181 _INTERRUPTIBLE(os::Solaris::setup_interruptible_already_blocked(_thread), _result = _cmd, _result, _thread, _clear, , , true )
182
183 #define INTERRUPTIBLE_RETURN_INT(_cmd, _clear) do { \
184 int _result; \
185 do { \
186 INTERRUPTIBLE(_cmd, _result, _clear); \
187 } while((_result == OS_ERR) && (errno == EINTR)); \
188 return _result; \
189 } while(false)
190
191 #define INTERRUPTIBLE_RETURN_INT_VM(_cmd, _clear) do { \
192 int _result; \
193 do { \
194 INTERRUPTIBLE_VM(_cmd, _result, _clear); \
195 } while((_result == OS_ERR) && (errno == EINTR)); \
196 return _result; \
197 } while(false)
198
199 #define INTERRUPTIBLE_RETURN_INT_NORESTART(_cmd, _clear) do { \
200 int _result; \
201 INTERRUPTIBLE_NORESTART(_cmd, _result, _clear); \
202 return _result; \
203 } while(false)
204
205 /* Use the RESTARTABLE macros when interruptible io is not needed */
206
207 #define RESTARTABLE(_cmd, _result) do { \
208 do { \
209 _result = _cmd; \
210 } while((_result == OS_ERR) && (errno == EINTR)); \
211 } while(false)
212
213 #define RESTARTABLE_RETURN_INT(_cmd) do { \
214 int _result; \
215 RESTARTABLE(_cmd, _result); \
216 return _result; \
217 } while(false)
218
219 inline bool os::numa_has_static_binding() { return false; }
220 inline bool os::numa_has_group_homing() { return true; }
221
222 inline int os::socket(int domain, int type, int protocol) {
223 return ::socket(domain, type, protocol);
224 }
225
226 inline int os::listen(int fd, int count) {
227 if (fd < 0) return OS_ERR;
228
229 return ::listen(fd, count);
230 }
231
232 inline int os::socket_shutdown(int fd, int howto){
233 return ::shutdown(fd, howto);
234 }
235
236 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len){
237 return ::getsockname(fd, him, len);
238 }
239
240 inline int os::get_host_name(char* name, int namelen){
241 return ::gethostname(name, namelen);
242 }
243
244 inline struct hostent* os::get_host_by_name(char* name) {
245 return ::gethostbyname(name);
246 }
247
248 inline int os::get_sock_opt(int fd, int level, int optname,
249 char* optval, socklen_t* optlen) {
250 return ::getsockopt(fd, level, optname, optval, optlen);
251 }
252
253 inline int os::set_sock_opt(int fd, int level, int optname,
254 const char *optval, socklen_t optlen) {
255 return ::setsockopt(fd, level, optname, optval, optlen);
256 }
257 #endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP