git.zerfleddert.de Git - proxmark3-svn/blob - client/util_posix.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // utilities requiring Posix library functions
   9 //-----------------------------------------------------------------------------
  10
  11 #if !defined(_WIN32)
  12 #define _POSIX_C_SOURCE 199309L                 // need nanosleep()
  13 #else
  14 #include <windows.h>
  15 #endif
  16
  17 #include "util_posix.h"
  18 #include <stdint.h>
  19 #include <time.h>
  20
  21
  22 // Timer functions
  23 #if !defined (_WIN32)
  24 #include <errno.h>
  25
  26 static void nsleep(uint64_t n) {
  27         struct timespec timeout;
  28         timeout.tv_sec = n/1000000000;
  29         timeout.tv_nsec = n%1000000000;
  30         while (nanosleep(&timeout, &timeout) && errno == EINTR);
  31 }
  32
  33 void msleep(uint32_t n) {
  34         nsleep(1000000 * (uint64_t)n);
  35 }
  36 #endif // _WIN32
  37
  38 #ifdef __APPLE__
  39
  40         #define CLOCK_MONOTONIC (1)
  41         #define CLOCK_REALTIME (2)
  42
  43         #include <sys/time.h>
  44         #include <mach/clock.h>
  45         #include <mach/mach.h>
  46         #include <mach/mach_time.h>
  47
  48         /* clock_gettime is not implemented on OSX prior to 10.12 */
  49         int _civet_clock_gettime(int clk_id, struct timespec *t);
  50
  51         int _civet_clock_gettime(int clk_id, struct timespec *t)
  52         {
  53                 memset(t, 0, sizeof(*t));
  54                 if (clk_id == CLOCK_REALTIME) {
  55                         struct timeval now;
  56                         int rv = gettimeofday(&now, NULL);
  57                         if (rv) {
  58                                 return rv;
  59                         }
  60                         t->tv_sec = now.tv_sec;
  61                         t->tv_nsec = now.tv_usec * 1000;
  62                         return 0;
  63
  64                 } else if (clk_id == CLOCK_MONOTONIC) {
  65                         static uint64_t clock_start_time = 0;
  66                         static mach_timebase_info_data_t timebase_info = {0, 0};
  67
  68                         uint64_t now = mach_absolute_time();
  69
  70                         if (clock_start_time == 0) {
  71                                 mach_timebase_info(&timebase_info);
  72                                 clock_start_time = now;
  73                         }
  74
  75                         now = (uint64_t)((double)(now - clock_start_time)
  76                                          * (double)timebase_info.numer
  77                                          / (double)timebase_info.denom);
  78
  79                         t->tv_sec = now / 1000000000;
  80                         t->tv_nsec = now % 1000000000;
  81                         return 0;
  82                 }
  83                 return -1; // EINVAL - Clock ID is unknown
  84         }
  85
  86         /* if clock_gettime is declared, then __CLOCK_AVAILABILITY will be defined */
  87         #ifdef __CLOCK_AVAILABILITY
  88                 /* If we compiled with Mac OSX 10.12 or later, then clock_gettime will be declared
  89                  * but it may be NULL at runtime. So we need to check before using it. */
  90                 int _civet_safe_clock_gettime(int clk_id, struct timespec *t);
  91
  92                 int _civet_safe_clock_gettime(int clk_id, struct timespec *t) {
  93                         if( clock_gettime ) {
  94                                 return clock_gettime(clk_id, t);
  95                         }
  96                         return _civet_clock_gettime(clk_id, t);
  97                 }
  98                 #define clock_gettime _civet_safe_clock_gettime
  99         #else
 100                 #define clock_gettime _civet_clock_gettime
 101         #endif
 102
 103 #endif
 104
 105
 106 // a milliseconds timer for performance measurement
 107 uint64_t msclock() {
 108 #if defined(_WIN32)
 109         #include <sys/types.h>
 110
 111         // WORKAROUND FOR MinGW (some versions - use if normal code does not compile)
 112         // It has no _ftime_s and needs explicit inclusion of timeb.h
 113         #include <sys/timeb.h>
 114         struct _timeb t;
 115         _ftime(&t);
 116         return 1000 * t.time + t.millitm;
 117
 118 // NORMAL CODE (use _ftime_s)
 119         //struct _timeb t;
 120         //if (_ftime_s(&t)) {
 121         //      return 0;
 122         //} else {
 123         //      return 1000 * t.time + t.millitm;
 124         //}
 125 #else
 126         struct timespec t;
 127         clock_gettime(CLOCK_MONOTONIC, &t);
 128         return (t.tv_sec * 1000 + t.tv_nsec / 1000000);
 129 #endif
 130 }
 131