1 /*
2 * Copyright (c) 1997, 2010, 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/os.hpp"
30 #ifdef TARGET_OS_ARCH_solaris_x86
31 # include "atomic_solaris_x86.inline.hpp"
32 # include "orderAccess_solaris_x86.inline.hpp"
33 #endif
34 #ifdef TARGET_OS_ARCH_solaris_sparc
35 # include "atomic_solaris_sparc.inline.hpp"
36 # include "orderAccess_solaris_sparc.inline.hpp"
37 #endif
38
39 inline const char* os::file_separator() { return "/"; }
40 inline const char* os::line_separator() { return "\n"; }
41 inline const char* os::path_separator() { return ":"; }
42
43 inline const char* os::jlong_format_specifier() { return "%lld"; }
44 inline const char* os::julong_format_specifier() { return "%llu"; }
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::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
73 inline DIR* os::opendir(const char* dirname)
74 {
75 assert(dirname != NULL, "just checking");
76 return ::opendir(dirname);
77 }
78
79 inline int os::readdir_buf_size(const char *path)
80 {
81 int size = pathconf(path, _PC_NAME_MAX);
82 return (size < 0 ? MAXPATHLEN : size) + sizeof(dirent) + 1;
83 }
84
85 inline struct dirent* os::readdir(DIR* dirp, dirent* dbuf)
86 {
87 assert(dirp != NULL, "just checking");
88 #if defined(_LP64) || defined(_GNU_SOURCE)
89 dirent* p;
90 int status;
91
92 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
93 errno = status;
94 return NULL;
95 } else
96 return p;
97 #else // defined(_LP64) || defined(_GNU_SOURCE)
98 return ::readdir_r(dirp, dbuf);
99 #endif // defined(_LP64) || defined(_GNU_SOURCE)
100 }
101
102 inline int os::closedir(DIR *dirp)
103 {
104 assert(dirp != NULL, "just checking");
105 return ::closedir(dirp);
106 }
107
108 //////////////////////////////////////////////////////////////////////////////
109 ////////////////////////////////////////////////////////////////////////////////
110
111 // macros for interruptible io and system calls and system call restarting
112
113 #define _INTERRUPTIBLE(_setup, _cmd, _result, _thread, _clear, _before, _after, _int_enable) \
114 do { \
115 _setup; \
116 _before; \
117 OSThread* _osthread = _thread->osthread(); \
118 if (_int_enable && _thread->has_last_Java_frame()) { \
119 /* this is java interruptible io stuff */ \
120 if (os::is_interrupted(_thread, _clear)) { \
121 os::Solaris::bump_interrupted_before_count(); \
122 _result = OS_INTRPT; \
123 } else { \
124 /* _cmd always expands to an assignment to _result */ \
125 if ((_cmd) < 0 && errno == EINTR \
126 && os::is_interrupted(_thread, _clear)) { \
127 os::Solaris::bump_interrupted_during_count(); \
128 _result = OS_INTRPT; \
129 } \
130 } \
131 } else { \
132 /* this is normal blocking io stuff */ \
133 _cmd; \
134 } \
135 _after; \
136 } while(false)
137
138 // Interruptible io support + restarting of interrupted system calls
139
140 #ifndef ASSERT
141
142 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
143 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO); \
144 } while((_result == OS_ERR) && (errno == EINTR))
145
146 #else
147
148 // This adds an assertion that it is only called from thread_in_native
149 // The call overhead is skipped for performance in product mode
150 #define INTERRUPTIBLE(_cmd, _result, _clear) do { \
151 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO ); \
152 } while((_result == OS_ERR) && (errno == EINTR))
153
154 #endif
155
156 // Used for calls from _thread_in_vm, not from _thread_in_native
157 #define INTERRUPTIBLE_VM(_cmd, _result, _clear) do { \
158 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible(_thread), UseVMInterruptibleIO ); \
159 } while((_result == OS_ERR) && (errno == EINTR))
160
161 /* Use NORESTART when the system call cannot return EINTR, when something other
162 than a system call is being invoked, or when the caller must do EINTR
163 handling. */
164
165 #ifndef ASSERT
166
167 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
168 _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO)
169
170 #else
171
172 // This adds an assertion that it is only called from thread_in_native
173 // The call overhead is skipped for performance in product mode
174 #define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \
175 _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO )
176
177 #endif
178
179 // Don't attend to UseVMInterruptibleIO. Always allow interruption.
180 // Also assumes that it is called from the _thread_blocked state.
181 // Used by os_sleep().
182
183 #define INTERRUPTIBLE_NORESTART_VM_ALWAYS(_cmd, _result, _thread, _clear) \
184 _INTERRUPTIBLE(os::Solaris::setup_interruptible_already_blocked(_thread), _result = _cmd, _result, _thread, _clear, , , true )
185
186 #define INTERRUPTIBLE_RETURN_INT(_cmd, _clear) do { \
187 int _result; \
188 do { \
189 INTERRUPTIBLE(_cmd, _result, _clear); \
190 } while((_result == OS_ERR) && (errno == EINTR)); \
191 return _result; \
192 } while(false)
193
194 #define INTERRUPTIBLE_RETURN_INT_VM(_cmd, _clear) do { \
195 int _result; \
196 do { \
197 INTERRUPTIBLE_VM(_cmd, _result, _clear); \
198 } while((_result == OS_ERR) && (errno == EINTR)); \
199 return _result; \
200 } while(false)
201
202 #define INTERRUPTIBLE_RETURN_INT_NORESTART(_cmd, _clear) do { \
203 int _result; \
204 INTERRUPTIBLE_NORESTART(_cmd, _result, _clear); \
205 return _result; \
206 } while(false)
207
208 /* Use the RESTARTABLE macros when interruptible io is not needed */
209
210 #define RESTARTABLE(_cmd, _result) do { \
211 do { \
212 _result = _cmd; \
213 } while((_result == OS_ERR) && (errno == EINTR)); \
214 } while(false)
215
216 #define RESTARTABLE_RETURN_INT(_cmd) do { \
217 int _result; \
218 RESTARTABLE(_cmd, _result); \
219 return _result; \
220 } while(false)
221
222 inline bool os::numa_has_static_binding() { return false; }
223 inline bool os::numa_has_group_homing() { return true; }
224
225 #endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP