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.hpp"
29 #include "runtime/atomic.inline.hpp"
30 #include "runtime/os.hpp"
31
32 #ifdef TARGET_OS_ARCH_solaris_x86
33 # include "orderAccess_solaris_x86.inline.hpp"
34 #endif
35 #ifdef TARGET_OS_ARCH_solaris_sparc
36 # include "orderAccess_solaris_sparc.inline.hpp"
37 #endif
38
39 // System includes
40 #include <sys/param.h>
41 #include <dlfcn.h>
42 #include <sys/socket.h>
43 #include <sys/poll.h>
44 #include <sys/filio.h>
45 #include <unistd.h>
46 #include <netdb.h>
47 #include <setjmp.h>
48
49 inline const char* os::file_separator() { return "/"; }
50 inline const char* os::line_separator() { return "\n"; }
51 inline const char* os::path_separator() { return ":"; }
52
53 // File names are case-sensitive on windows only
54 inline int os::file_name_strcmp(const char* s1, const char* s2) {
55 return strcmp(s1, s2);
56 }
57
58 inline bool os::uses_stack_guard_pages() {
59 return true;
60 }
61
62 inline bool os::allocate_stack_guard_pages() {
63 assert(uses_stack_guard_pages(), "sanity check");
64 int r = thr_main() ;
65 guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
66 return r;
67 }
68
69
70 // On Solaris, reservations are made on a page by page basis, nothing to do.
71 inline void os::pd_split_reserved_memory(char *base, size_t size,
72 size_t split, bool realloc) {
73 }
74
75
76 // Bang the shadow pages if they need to be touched to be mapped.
77 inline void os::bang_stack_shadow_pages() {
78 }
79 inline void os::dll_unload(void *lib) { ::dlclose(lib); }
80
81 inline DIR* os::opendir(const char* dirname) {
82 assert(dirname != NULL, "just checking");
83 return ::opendir(dirname);
84 }
85
86 inline int os::readdir_buf_size(const char *path) {
87 int size = pathconf(path, _PC_NAME_MAX);
88 return (size < 0 ? MAXPATHLEN : size) + sizeof(dirent) + 1;
89 }
90
91 inline struct dirent* os::readdir(DIR* dirp, dirent* dbuf) {
92 assert(dirp != NULL, "just checking");
93 #if defined(_LP64) || defined(_GNU_SOURCE)
94 dirent* p;
95 int status;
96
97 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
98 errno = status;
99 return NULL;
100 } else
101 return p;
102 #else // defined(_LP64) || defined(_GNU_SOURCE)
103 return ::readdir_r(dirp, dbuf);
104 #endif // defined(_LP64) || defined(_GNU_SOURCE)
105 }
106
107 inline int os::closedir(DIR *dirp) {
108 assert(dirp != NULL, "argument is NULL");
109 return ::closedir(dirp);
110 }
111
112 //////////////////////////////////////////////////////////////////////////////
113 ////////////////////////////////////////////////////////////////////////////////
114
115 // macros for interruptible io and system calls and system call restarting
116
117 #define _INTERRUPTIBLE(_setup, _cmd, _result, _thread, _clear, _before, _after, _int_enable) \
118 do { \
119 _setup; \
120 _before; \
121 OSThread* _osthread = _thread->osthread(); \
122 if (_int_enable && _thread->has_last_Java_frame()) { \
123 /* this is java interruptible io stuff */ \
124 if (os::is_interrupted(_thread, _clear)) { \
125 os::Solaris::bump_interrupted_before_count(); \
126 _result = OS_INTRPT; \
127 } else { \
128 /* _cmd always expands to an assignment to _result */ \
129 if ((_cmd) < 0 && errno == EINTR \
130 && os::is_interrupted(_thread, _clear)) { \
131 os::Solaris::bump_interrupted_during_count(); \
132 _result = OS_INTRPT; \
133 } \
134 } \
135 } else { \
136 /* this is normal blocking io stuff */ \
137 _cmd; \
138 } \
139 _after; \
140 } while(false)
141
142 // Interruptible io support + restarting of interrupted system calls
143
144 #ifndef ASSERT
145
146 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
147 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO); \
148 } while((_result == OS_ERR) && (errno == EINTR))
149
150 #else
151
152 // This adds an assertion that it is only called from thread_in_native
153 // The call overhead is skipped for performance in product mode
154 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
155 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO ); \
156 } while((_result == OS_ERR) && (errno == EINTR))
157
158 #endif
159
160 // Used for calls from _thread_in_vm, not from _thread_in_native
161 #define INTERRUPTIBLE_VM(_cmd, _result, _clear) do { \
162 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible(_thread), UseVMInterruptibleIO ); \
163 } while((_result == OS_ERR) && (errno == EINTR))
164
165 /* Use NORESTART when the system call cannot return EINTR, when something other
166 than a system call is being invoked, or when the caller must do EINTR
167 handling. */
168
169 #ifndef ASSERT
170
171 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
172 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO)
173
174 #else
175
176 // This adds an assertion that it is only called from thread_in_native
177 // The call overhead is skipped for performance in product mode
178 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
179 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO )
180
181 #endif
182
183 // Don't attend to UseVMInterruptibleIO. Always allow interruption.
184 // Also assumes that it is called from the _thread_blocked state.
185 // Used by os_sleep().
186
187 #define INTERRUPTIBLE_NORESTART_VM_ALWAYS(_cmd, _result, _thread, _clear) \
188 _INTERRUPTIBLE(os::Solaris::setup_interruptible_already_blocked(_thread), _result = _cmd, _result, _thread, _clear, , , true )
189
190 #define INTERRUPTIBLE_RETURN_INT(_cmd, _clear) do { \
191 int _result; \
192 do { \
193 INTERRUPTIBLE(_cmd, _result, _clear); \
194 } while((_result == OS_ERR) && (errno == EINTR)); \
195 return _result; \
196 } while(false)
197
198 #define INTERRUPTIBLE_RETURN_INT_VM(_cmd, _clear) do { \
199 int _result; \
200 do { \
201 INTERRUPTIBLE_VM(_cmd, _result, _clear); \
202 } while((_result == OS_ERR) && (errno == EINTR)); \
203 return _result; \
204 } while(false)
205
206 #define INTERRUPTIBLE_RETURN_INT_NORESTART(_cmd, _clear) do { \
207 int _result; \
208 INTERRUPTIBLE_NORESTART(_cmd, _result, _clear); \
209 return _result; \
210 } while(false)
211
212 /* Use the RESTARTABLE macros when interruptible io is not needed */
213
214 #define RESTARTABLE(_cmd, _result) do { \
215 do { \
216 _result = _cmd; \
217 } while((_result == OS_ERR) && (errno == EINTR)); \
218 } while(false)
219
220 #define RESTARTABLE_RETURN_INT(_cmd) do { \
221 int _result; \
222 RESTARTABLE(_cmd, _result); \
223 return _result; \
224 } while(false)
225
226 inline bool os::numa_has_static_binding() { return false; }
227 inline bool os::numa_has_group_homing() { return true; }
228
229 inline int os::socket(int domain, int type, int protocol) {
230 return ::socket(domain, type, protocol);
231 }
232
233 inline int os::listen(int fd, int count) {
234 if (fd < 0) return OS_ERR;
235
236 return ::listen(fd, count);
237 }
238
239 inline int os::socket_shutdown(int fd, int howto){
240 return ::shutdown(fd, howto);
241 }
242
243 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len){
244 return ::getsockname(fd, him, len);
245 }
246
247 inline int os::get_host_name(char* name, int namelen){
248 return ::gethostname(name, namelen);
249 }
250
251 inline struct hostent* os::get_host_by_name(char* name) {
252 return ::gethostbyname(name);
253 }
254
255 inline int os::get_sock_opt(int fd, int level, int optname,
256 char* optval, socklen_t* optlen) {
257 return ::getsockopt(fd, level, optname, optval, optlen);
258 }
259
260 inline int os::set_sock_opt(int fd, int level, int optname,
261 const char *optval, socklen_t optlen) {
262 return ::setsockopt(fd, level, optname, optval, optlen);
263 }
264 #endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP