The Tor Browser: nsprpub/pr/src/misc/prsystem.c@6474c204b198 (annotated)

nsprpub/pr/src/misc/prsystem.c@6474c204b198 (annotated)

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.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "primpl.h"
 #include "prsystem.h"
 #include "prprf.h"
 #include "prlong.h"
 #if defined(BEOS)
 #include <kernel/OS.h>
 #endif
 #if defined(OS2)
 #define INCL_DOS
 #define INCL_DOSMISC
 #include <os2.h>
 /* define the required constant if it is not already defined in the headers */
 #ifndef QSV_NUMPROCESSORS
 #define QSV_NUMPROCESSORS 26
 #endif
 #endif
 /* BSD-derived systems use sysctl() to get the number of processors */
 #if defined(BSDI) || defined(FREEBSD) || defined(NETBSD) \
     || defined(OPENBSD) || defined(DARWIN)
 #define _PR_HAVE_SYSCTL
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #endif
 #if defined(DARWIN)
 #include <mach/mach_init.h>
 #include <mach/mach_host.h>
 #include <mach/mach_port.h>
 #endif
 #if defined(HPUX)
 #include <sys/mpctl.h>
 #include <sys/pstat.h>
 #endif
 #if defined(XP_UNIX)
 #include <unistd.h>
 #include <sys/utsname.h>
 #endif
 #if defined(LINUX)
 #include <string.h>
 #include <ctype.h>
 #define MAX_LINE 512
 #endif
 #if defined(AIX)
 #include <cf.h>
 #include <sys/cfgodm.h>
 #endif
 PR_IMPLEMENT(char) PR_GetDirectorySeparator(void)
 {
     return PR_DIRECTORY_SEPARATOR;
 }  /* PR_GetDirectorySeparator */
 /*
 ** OBSOLETE -- the function name is misspelled.
 */
 PR_IMPLEMENT(char) PR_GetDirectorySepartor(void)
 {
 #if defined(DEBUG)
     static PRBool warn = PR_TRUE;
     if (warn) {
         warn = _PR_Obsolete("PR_GetDirectorySepartor()",
                 "PR_GetDirectorySeparator()");
     }
 #endif
     return PR_GetDirectorySeparator();
 }  /* PR_GetDirectorySepartor */
 PR_IMPLEMENT(char) PR_GetPathSeparator(void)
 {
     return PR_PATH_SEPARATOR;
 }  /* PR_GetPathSeparator */
 PR_IMPLEMENT(PRStatus) PR_GetSystemInfo(PRSysInfo cmd, char *buf, PRUint32 buflen)
 {
     PRUintn len = 0;
     if (!_pr_initialized) _PR_ImplicitInitialization();
     switch(cmd)
     {
       case PR_SI_HOSTNAME:
       case PR_SI_HOSTNAME_UNTRUNCATED:
         if (PR_FAILURE == _PR_MD_GETHOSTNAME(buf, (PRUintn)buflen))
             return PR_FAILURE;
         if (cmd == PR_SI_HOSTNAME_UNTRUNCATED)
             break;
         /*
          * On some platforms a system does not have a hostname and
          * its IP address is returned instead.   The following code
          * should be skipped on those platforms.
          */
 #ifndef _PR_GET_HOST_ADDR_AS_NAME
         /* Return the unqualified hostname */
             while (buf[len] && (len < buflen)) {
                 if (buf[len] == '.') {
                     buf[len] = '\0';
                     break;
                 }
                 len += 1;
             }
 #endif
          break;
       case PR_SI_SYSNAME:
         /* Return the operating system name */
 #if defined(XP_UNIX) || defined(WIN32)
         if (PR_FAILURE == _PR_MD_GETSYSINFO(cmd, buf, (PRUintn)buflen))
             return PR_FAILURE;
 #else
         (void)PR_snprintf(buf, buflen, _PR_SI_SYSNAME);
 #endif
         break;
       case PR_SI_RELEASE:
         /* Return the version of the operating system */
 #if defined(XP_UNIX) || defined(WIN32)
         if (PR_FAILURE == _PR_MD_GETSYSINFO(cmd, buf, (PRUintn)buflen))
             return PR_FAILURE;
 #endif
 #if defined(XP_OS2)
         {
             ULONG os2ver[2] = {0};
             DosQuerySysInfo(QSV_VERSION_MINOR, QSV_VERSION_REVISION,
                             &os2ver, sizeof(os2ver));
             /* Formatting for normal usage (2.11, 3.0, 4.0, 4.5); officially,
                Warp 4 is version 2.40.00, WSeB 2.45.00 */
             if (os2ver[0] < 30)
               (void)PR_snprintf(buf, buflen, "%s%lu",
                                 "2.", os2ver[0]);
             else if (os2ver[0] < 45)
               (void)PR_snprintf(buf, buflen, "%lu%s%lu",
                                 os2ver[0]/10, ".", os2ver[1]);
             else
               (void)PR_snprintf(buf, buflen, "%.1f",
                                 os2ver[0]/10.0);
         }
 #endif /* OS2 */
         break;
       case PR_SI_ARCHITECTURE:
         /* Return the architecture of the machine (ie. x86, mips, alpha, ...)*/
         (void)PR_snprintf(buf, buflen, _PR_SI_ARCHITECTURE);
         break;
 	  default:
 			PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
 			return PR_FAILURE;
     }
     return PR_SUCCESS;
 }
 /*
 ** PR_GetNumberOfProcessors()
 **
 ** Implementation notes:
 **   Every platform does it a bit different.
 **     numCpus is the returned value.
 **   for each platform's "if defined" section
 **     declare your local variable
 **     do your thing, assign to numCpus
 **   order of the if defined()s may be important,
 **     especially for unix variants. Do platform
 **     specific implementations before XP_UNIX.
 **
 */
 PR_IMPLEMENT(PRInt32) PR_GetNumberOfProcessors( void )
 {
     PRInt32     numCpus;
 #if defined(WIN32)
     SYSTEM_INFO     info;
     GetSystemInfo( &info );
     numCpus = info.dwNumberOfProcessors;
 #elif defined(BEOS)
     system_info sysInfo;
     get_system_info(&sysInfo);
     numCpus = sysInfo.cpu_count;
 #elif defined(OS2)
     DosQuerySysInfo( QSV_NUMPROCESSORS, QSV_NUMPROCESSORS, &numCpus, sizeof(numCpus));
 #elif defined(_PR_HAVE_SYSCTL)
     int mib[2];
     int rc;
     size_t len = sizeof(numCpus);
     mib[0] = CTL_HW;
     mib[1] = HW_NCPU;
     rc = sysctl( mib, 2, &numCpus, &len, NULL, 0 );
     if ( -1 == rc )  {
         numCpus = -1; /* set to -1 for return value on error */
         _PR_MD_MAP_DEFAULT_ERROR( _MD_ERRNO() );
     }
 #elif defined(HPUX)
     numCpus = mpctl( MPC_GETNUMSPUS, 0, 0 );
     if ( numCpus < 1 )  {
         numCpus = -1; /* set to -1 for return value on error */
         _PR_MD_MAP_DEFAULT_ERROR( _MD_ERRNO() );
     }
 #elif defined(IRIX)
     numCpus = sysconf( _SC_NPROC_ONLN );
 #elif defined(RISCOS) || defined(SYMBIAN)
     numCpus = 1;
 #elif defined(LINUX)
     /* for the benefit of devices with advanced power-saving, that
        actually hotplug their cpus in heavy load, try to figure out
        the real number of CPUs */
     char buf[MAX_LINE];
     FILE *fin;
     const char *cpu_present = "/sys/devices/system/cpu/present";
     size_t strsize;
     numCpus = 0;
     fin = fopen(cpu_present, "r");
     if (fin != NULL) {
         if (fgets(buf, MAX_LINE, fin) != NULL) {
             /* check that the format is what we expect */
             if (buf[0] == '0') {
                 strsize = strlen(buf);
                 if (strsize == 1) {
                     /* single core */
                     numCpus = 1;
                 } else if (strsize >= 3 && strsize <= 5) {
                     /* should be of the form 0-999 */
                     /* parse the part after the 0-, note count is 0-based */
                     if (buf[1] == '-' && isdigit(buf[2])) {
                         numCpus = 1 + atoi(buf + 2);
                     }
                 }
             }
         }
         fclose(fin);
     }
     /* if that fails, fall back to more standard methods */
     if (!numCpus) {
         numCpus = sysconf( _SC_NPROCESSORS_CONF );
     }
 #elif defined(XP_UNIX)
     numCpus = sysconf( _SC_NPROCESSORS_CONF );
 #else
 #error "An implementation is required"
 #endif
     return(numCpus);
 } /* end PR_GetNumberOfProcessors() */
 /*
 ** PR_GetPhysicalMemorySize()
 **
 ** Implementation notes:
 **   Every platform does it a bit different.
 **     bytes is the returned value.
 **   for each platform's "if defined" section
 **     declare your local variable
 **     do your thing, assign to bytes.
 **
 */
 PR_IMPLEMENT(PRUint64) PR_GetPhysicalMemorySize(void)
 {
     PRUint64 bytes = 0;
 #if defined(LINUX) || defined(SOLARIS)
     long pageSize = sysconf(_SC_PAGESIZE);
     long pageCount = sysconf(_SC_PHYS_PAGES);
     if (pageSize >= 0 && pageCount >= 0)
         bytes = (PRUint64) pageSize * pageCount;
 #elif defined(NETBSD) || defined(OPENBSD)
     int mib[2];
     int rc;
     uint64_t memSize;
     size_t len = sizeof(memSize);
     mib[0] = CTL_HW;
     mib[1] = HW_PHYSMEM64;
     rc = sysctl(mib, 2, &memSize, &len, NULL, 0);
     if (-1 != rc)  {
         bytes = memSize;
     }
 #elif defined(HPUX)
     struct pst_static info;
     int result = pstat_getstatic(&info, sizeof(info), 1, 0);
     if (result == 1)
         bytes = (PRUint64) info.physical_memory * info.page_size;
 #elif defined(DARWIN)
     mach_port_t mach_host = mach_host_self();
     struct host_basic_info hInfo;
     mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
     int result = host_info(mach_host,
                            HOST_BASIC_INFO,
                            (host_info_t) &hInfo,
                            &count);
     mach_port_deallocate(mach_task_self(), mach_host);
     if (result == KERN_SUCCESS)
         bytes = hInfo.max_mem;
 #elif defined(WIN32)
     MEMORYSTATUSEX memStat;
     memStat.dwLength = sizeof(memStat);
     if (GlobalMemoryStatusEx(&memStat))
         bytes = memStat.ullTotalPhys;
 #elif defined(OS2)
     ULONG ulPhysMem;
     DosQuerySysInfo(QSV_TOTPHYSMEM,
                     QSV_TOTPHYSMEM,
                     &ulPhysMem,
                     sizeof(ulPhysMem));
     bytes = ulPhysMem;
 #elif defined(AIX)
     if (odm_initialize() == 0) {
         int how_many;
         struct CuAt *obj = getattr("sys0", "realmem", 0, &how_many);
         if (obj != NULL) {
             bytes = (PRUint64) atoi(obj->value) * 1024;
             free(obj);
         }
         odm_terminate();
     }
 #else
     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
 #endif
     return bytes;
 } /* end PR_GetPhysicalMemorySize() */

The Tor Browser / annotate

nsprpub/pr/src/misc/prsystem.c@6474c204b198 (annotated)

nsprpub/pr/src/misc/prsystem.c