nsprpub/pr/src/misc/prsystem.c@6474c204b198
nsprpub/pr/src/misc/prsystem.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #include "primpl.h"
7 #include "prsystem.h"
8 #include "prprf.h"
9 #include "prlong.h"
11 #if defined(BEOS)
12 #include <kernel/OS.h>
13 #endif
15 #if defined(OS2)
16 #define INCL_DOS
17 #define INCL_DOSMISC
18 #include <os2.h>
19 /* define the required constant if it is not already defined in the headers */
20 #ifndef QSV_NUMPROCESSORS
21 #define QSV_NUMPROCESSORS 26
22 #endif
23 #endif
25 /* BSD-derived systems use sysctl() to get the number of processors */
26 #if defined(BSDI) || defined(FREEBSD) || defined(NETBSD) \
27 || defined(OPENBSD) || defined(DARWIN)
28 #define _PR_HAVE_SYSCTL
29 #include <sys/param.h>
30 #include <sys/sysctl.h>
31 #endif
33 #if defined(DARWIN)
34 #include <mach/mach_init.h>
35 #include <mach/mach_host.h>
36 #include <mach/mach_port.h>
37 #endif
39 #if defined(HPUX)
40 #include <sys/mpctl.h>
41 #include <sys/pstat.h>
42 #endif
44 #if defined(XP_UNIX)
45 #include <unistd.h>
46 #include <sys/utsname.h>
47 #endif
49 #if defined(LINUX)
50 #include <string.h>
51 #include <ctype.h>
52 #define MAX_LINE 512
53 #endif
55 #if defined(AIX)
56 #include <cf.h>
57 #include <sys/cfgodm.h>
58 #endif
60 PR_IMPLEMENT(char) PR_GetDirectorySeparator(void)
61 {
62 return PR_DIRECTORY_SEPARATOR;
63 } /* PR_GetDirectorySeparator */
65 /*
66 ** OBSOLETE -- the function name is misspelled.
67 */
68 PR_IMPLEMENT(char) PR_GetDirectorySepartor(void)
69 {
70 #if defined(DEBUG)
71 static PRBool warn = PR_TRUE;
72 if (warn) {
73 warn = _PR_Obsolete("PR_GetDirectorySepartor()",
74 "PR_GetDirectorySeparator()");
75 }
76 #endif
77 return PR_GetDirectorySeparator();
78 } /* PR_GetDirectorySepartor */
80 PR_IMPLEMENT(char) PR_GetPathSeparator(void)
81 {
82 return PR_PATH_SEPARATOR;
83 } /* PR_GetPathSeparator */
85 PR_IMPLEMENT(PRStatus) PR_GetSystemInfo(PRSysInfo cmd, char *buf, PRUint32 buflen)
86 {
87 PRUintn len = 0;
89 if (!_pr_initialized) _PR_ImplicitInitialization();
91 switch(cmd)
92 {
93 case PR_SI_HOSTNAME:
94 case PR_SI_HOSTNAME_UNTRUNCATED:
95 if (PR_FAILURE == _PR_MD_GETHOSTNAME(buf, (PRUintn)buflen))
96 return PR_FAILURE;
98 if (cmd == PR_SI_HOSTNAME_UNTRUNCATED)
99 break;
100 /*
101 * On some platforms a system does not have a hostname and
102 * its IP address is returned instead. The following code
103 * should be skipped on those platforms.
104 */
105 #ifndef _PR_GET_HOST_ADDR_AS_NAME
106 /* Return the unqualified hostname */
107 while (buf[len] && (len < buflen)) {
108 if (buf[len] == '.') {
109 buf[len] = '\0';
110 break;
111 }
112 len += 1;
113 }
114 #endif
115 break;
117 case PR_SI_SYSNAME:
118 /* Return the operating system name */
119 #if defined(XP_UNIX) || defined(WIN32)
120 if (PR_FAILURE == _PR_MD_GETSYSINFO(cmd, buf, (PRUintn)buflen))
121 return PR_FAILURE;
122 #else
123 (void)PR_snprintf(buf, buflen, _PR_SI_SYSNAME);
124 #endif
125 break;
127 case PR_SI_RELEASE:
128 /* Return the version of the operating system */
129 #if defined(XP_UNIX) || defined(WIN32)
130 if (PR_FAILURE == _PR_MD_GETSYSINFO(cmd, buf, (PRUintn)buflen))
131 return PR_FAILURE;
132 #endif
133 #if defined(XP_OS2)
134 {
135 ULONG os2ver[2] = {0};
136 DosQuerySysInfo(QSV_VERSION_MINOR, QSV_VERSION_REVISION,
137 &os2ver, sizeof(os2ver));
138 /* Formatting for normal usage (2.11, 3.0, 4.0, 4.5); officially,
139 Warp 4 is version 2.40.00, WSeB 2.45.00 */
140 if (os2ver[0] < 30)
141 (void)PR_snprintf(buf, buflen, "%s%lu",
142 "2.", os2ver[0]);
143 else if (os2ver[0] < 45)
144 (void)PR_snprintf(buf, buflen, "%lu%s%lu",
145 os2ver[0]/10, ".", os2ver[1]);
146 else
147 (void)PR_snprintf(buf, buflen, "%.1f",
148 os2ver[0]/10.0);
149 }
150 #endif /* OS2 */
151 break;
153 case PR_SI_ARCHITECTURE:
154 /* Return the architecture of the machine (ie. x86, mips, alpha, ...)*/
155 (void)PR_snprintf(buf, buflen, _PR_SI_ARCHITECTURE);
156 break;
157 default:
158 PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
159 return PR_FAILURE;
160 }
161 return PR_SUCCESS;
162 }
164 /*
165 ** PR_GetNumberOfProcessors()
166 **
167 ** Implementation notes:
168 ** Every platform does it a bit different.
169 ** numCpus is the returned value.
170 ** for each platform's "if defined" section
171 ** declare your local variable
172 ** do your thing, assign to numCpus
173 ** order of the if defined()s may be important,
174 ** especially for unix variants. Do platform
175 ** specific implementations before XP_UNIX.
176 **
177 */
178 PR_IMPLEMENT(PRInt32) PR_GetNumberOfProcessors( void )
179 {
180 PRInt32 numCpus;
181 #if defined(WIN32)
182 SYSTEM_INFO info;
184 GetSystemInfo( &info );
185 numCpus = info.dwNumberOfProcessors;
186 #elif defined(BEOS)
187 system_info sysInfo;
189 get_system_info(&sysInfo);
190 numCpus = sysInfo.cpu_count;
191 #elif defined(OS2)
192 DosQuerySysInfo( QSV_NUMPROCESSORS, QSV_NUMPROCESSORS, &numCpus, sizeof(numCpus));
193 #elif defined(_PR_HAVE_SYSCTL)
194 int mib[2];
195 int rc;
196 size_t len = sizeof(numCpus);
198 mib[0] = CTL_HW;
199 mib[1] = HW_NCPU;
200 rc = sysctl( mib, 2, &numCpus, &len, NULL, 0 );
201 if ( -1 == rc ) {
202 numCpus = -1; /* set to -1 for return value on error */
203 _PR_MD_MAP_DEFAULT_ERROR( _MD_ERRNO() );
204 }
205 #elif defined(HPUX)
206 numCpus = mpctl( MPC_GETNUMSPUS, 0, 0 );
207 if ( numCpus < 1 ) {
208 numCpus = -1; /* set to -1 for return value on error */
209 _PR_MD_MAP_DEFAULT_ERROR( _MD_ERRNO() );
210 }
211 #elif defined(IRIX)
212 numCpus = sysconf( _SC_NPROC_ONLN );
213 #elif defined(RISCOS) || defined(SYMBIAN)
214 numCpus = 1;
215 #elif defined(LINUX)
216 /* for the benefit of devices with advanced power-saving, that
217 actually hotplug their cpus in heavy load, try to figure out
218 the real number of CPUs */
219 char buf[MAX_LINE];
220 FILE *fin;
221 const char *cpu_present = "/sys/devices/system/cpu/present";
222 size_t strsize;
223 numCpus = 0;
224 fin = fopen(cpu_present, "r");
225 if (fin != NULL) {
226 if (fgets(buf, MAX_LINE, fin) != NULL) {
227 /* check that the format is what we expect */
228 if (buf[0] == '0') {
229 strsize = strlen(buf);
230 if (strsize == 1) {
231 /* single core */
232 numCpus = 1;
233 } else if (strsize >= 3 && strsize <= 5) {
234 /* should be of the form 0-999 */
235 /* parse the part after the 0-, note count is 0-based */
236 if (buf[1] == '-' && isdigit(buf[2])) {
237 numCpus = 1 + atoi(buf + 2);
238 }
239 }
240 }
241 }
242 fclose(fin);
243 }
244 /* if that fails, fall back to more standard methods */
245 if (!numCpus) {
246 numCpus = sysconf( _SC_NPROCESSORS_CONF );
247 }
248 #elif defined(XP_UNIX)
249 numCpus = sysconf( _SC_NPROCESSORS_CONF );
250 #else
251 #error "An implementation is required"
252 #endif
253 return(numCpus);
254 } /* end PR_GetNumberOfProcessors() */
256 /*
257 ** PR_GetPhysicalMemorySize()
258 **
259 ** Implementation notes:
260 ** Every platform does it a bit different.
261 ** bytes is the returned value.
262 ** for each platform's "if defined" section
263 ** declare your local variable
264 ** do your thing, assign to bytes.
265 **
266 */
267 PR_IMPLEMENT(PRUint64) PR_GetPhysicalMemorySize(void)
268 {
269 PRUint64 bytes = 0;
271 #if defined(LINUX) || defined(SOLARIS)
273 long pageSize = sysconf(_SC_PAGESIZE);
274 long pageCount = sysconf(_SC_PHYS_PAGES);
275 if (pageSize >= 0 && pageCount >= 0)
276 bytes = (PRUint64) pageSize * pageCount;
278 #elif defined(NETBSD) || defined(OPENBSD)
280 int mib[2];
281 int rc;
282 uint64_t memSize;
283 size_t len = sizeof(memSize);
285 mib[0] = CTL_HW;
286 mib[1] = HW_PHYSMEM64;
287 rc = sysctl(mib, 2, &memSize, &len, NULL, 0);
288 if (-1 != rc) {
289 bytes = memSize;
290 }
292 #elif defined(HPUX)
294 struct pst_static info;
295 int result = pstat_getstatic(&info, sizeof(info), 1, 0);
296 if (result == 1)
297 bytes = (PRUint64) info.physical_memory * info.page_size;
299 #elif defined(DARWIN)
301 mach_port_t mach_host = mach_host_self();
302 struct host_basic_info hInfo;
303 mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
305 int result = host_info(mach_host,
306 HOST_BASIC_INFO,
307 (host_info_t) &hInfo,
308 &count);
309 mach_port_deallocate(mach_task_self(), mach_host);
310 if (result == KERN_SUCCESS)
311 bytes = hInfo.max_mem;
313 #elif defined(WIN32)
315 MEMORYSTATUSEX memStat;
316 memStat.dwLength = sizeof(memStat);
317 if (GlobalMemoryStatusEx(&memStat))
318 bytes = memStat.ullTotalPhys;
320 #elif defined(OS2)
322 ULONG ulPhysMem;
323 DosQuerySysInfo(QSV_TOTPHYSMEM,
324 QSV_TOTPHYSMEM,
325 &ulPhysMem,
326 sizeof(ulPhysMem));
327 bytes = ulPhysMem;
329 #elif defined(AIX)
331 if (odm_initialize() == 0) {
332 int how_many;
333 struct CuAt *obj = getattr("sys0", "realmem", 0, &how_many);
334 if (obj != NULL) {
335 bytes = (PRUint64) atoi(obj->value) * 1024;
336 free(obj);
337 }
338 odm_terminate();
339 }
341 #else
343 PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
345 #endif
347 return bytes;
348 } /* end PR_GetPhysicalMemorySize() */
