os_solaris.inline.hpp revision 4030:203f64878aab 
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
49inline const char* os::file_separator() { return "/"; }
50inline const char* os::line_separator() { return "\n"; }
51inline const char* os::path_separator() { return ":"; }
52
53// File names are case-sensitive on windows only
54inline int os::file_name_strcmp(const char* s1, const char* s2) {
55  return strcmp(s1, s2);
56}
57
58inline bool os::uses_stack_guard_pages() {
59  return true;
60}
61
62inline 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.
71inline 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.
77inline void os::bang_stack_shadow_pages() {
78}
79inline void os::dll_unload(void *lib) { ::dlclose(lib); }
80
81inline DIR* os::opendir(const char* dirname) {
82  assert(dirname != NULL, "just checking");
83  return ::opendir(dirname);
84}
85
86inline 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
91inline 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
107inline 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) \
118do { \
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
226inline bool os::numa_has_static_binding()   { return false; }
227inline bool os::numa_has_group_homing()     { return true;  }
228
229inline int    os::socket(int domain, int type, int protocol) {
230  return ::socket(domain, type, protocol);
231}
232
233inline int    os::listen(int fd, int count) {
234  if (fd < 0) return OS_ERR;
235
236  return ::listen(fd, count);
237}
238
239inline int os::socket_shutdown(int fd, int howto){
240  return ::shutdown(fd, howto);
241}
242
243inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len){
244  return ::getsockname(fd, him, len);
245}
246
247inline int os::get_host_name(char* name, int namelen){
248  return ::gethostname(name, namelen);
249}
250
251inline struct hostent* os::get_host_by_name(char* name) {
252  return ::gethostbyname(name);
253}
254
255inline 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
260inline 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
265