os_solaris.inline.hpp revision 13078:acc3eff6673d 
1/*
2 * Copyright (c) 1997, 2016, 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.
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23 */
24
25#ifndef OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
26#define OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
27
28#include "runtime/os.hpp"
29
30// System includes
31#include <sys/param.h>
32#include <dlfcn.h>
33#include <sys/socket.h>
34#include <poll.h>
35#include <sys/filio.h>
36#include <unistd.h>
37#include <netdb.h>
38#include <setjmp.h>
39
40// File names are case-sensitive on windows only
41inline int os::file_name_strcmp(const char* s1, const char* s2) {
42  return strcmp(s1, s2);
43}
44
45inline bool os::uses_stack_guard_pages() {
46  return true;
47}
48
49inline bool os::must_commit_stack_guard_pages() {
50  assert(uses_stack_guard_pages(), "sanity check");
51  int r = thr_main() ;
52  guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ;
53  return r;
54}
55
56
57// On Solaris, reservations are made on a page by page basis, nothing to do.
58inline void os::pd_split_reserved_memory(char *base, size_t size,
59                                      size_t split, bool realloc) {
60}
61
62
63// Bang the shadow pages if they need to be touched to be mapped.
64inline void os::map_stack_shadow_pages(address sp) {
65}
66
67inline void os::dll_unload(void *lib) { ::dlclose(lib); }
68
69inline const int os::default_file_open_flags() { return 0;}
70
71inline DIR* os::opendir(const char* dirname) {
72  assert(dirname != NULL, "just checking");
73  return ::opendir(dirname);
74}
75
76inline int os::readdir_buf_size(const char *path) {
77  int size = pathconf(path, _PC_NAME_MAX);
78  return (size < 0 ? MAXPATHLEN : size) + sizeof(dirent) + 1;
79}
80
81inline struct dirent* os::readdir(DIR* dirp, dirent* dbuf) {
82  assert(dirp != NULL, "just checking");
83#if defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
84  dirent* p;
85  int status;
86
87  if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
88    errno = status;
89    return NULL;
90  } else
91    return p;
92#else  // defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
93  return ::readdir_r(dirp, dbuf);
94#endif // defined(_LP64) || defined(_GNU_SOURCE) || _FILE_OFFSET_BITS==64
95}
96
97inline int os::closedir(DIR *dirp) {
98  assert(dirp != NULL, "argument is NULL");
99  return ::closedir(dirp);
100}
101
102//////////////////////////////////////////////////////////////////////////////
103////////////////////////////////////////////////////////////////////////////////
104
105// macros for restartable system calls
106
107#define RESTARTABLE(_cmd, _result) do { \
108  do { \
109    _result = _cmd; \
110  } while((_result == OS_ERR) && (errno == EINTR)); \
111} while(false)
112
113#define RESTARTABLE_RETURN_INT(_cmd) do { \
114  int _result; \
115  RESTARTABLE(_cmd, _result); \
116  return _result; \
117} while(false)
118
119inline bool os::numa_has_static_binding()   { return false; }
120inline bool os::numa_has_group_homing()     { return true;  }
121
122inline int    os::socket(int domain, int type, int protocol) {
123  return ::socket(domain, type, protocol);
124}
125
126inline struct hostent* os::get_host_by_name(char* name) {
127  return ::gethostbyname(name);
128}
129
130inline bool os::supports_monotonic_clock() {
131  // javaTimeNanos() is monotonic on Solaris, see getTimeNanos() comments
132  return true;
133}
134
135inline void os::exit(int num) {
136  ::exit(num);
137}
138
139#endif // OS_SOLARIS_VM_OS_SOLARIS_INLINE_HPP
140