1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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
7 //-----------------------------------------------------------------------------
8 // utilities requiring Posix library functions
9 //-----------------------------------------------------------------------------
12 #define _POSIX_C_SOURCE 199309L // need nanosleep()
17 #include "util_posix.h"
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
);
33 void msleep(uint32_t n
) {
34 nsleep(1000000 * (uint64_t)n
);
40 #ifndef CLOCK_MONOTONIC
41 #define CLOCK_MONOTONIC (1)
43 #ifndef CLOCK_REALTIME
44 #define CLOCK_REALTIME (2)
48 #include <mach/clock.h>
49 #include <mach/mach.h>
50 #include <mach/mach_time.h>
52 /* clock_gettime is not implemented on OSX prior to 10.12 */
53 int _civet_clock_gettime(int clk_id
, struct timespec
*t
);
55 int _civet_clock_gettime(int clk_id
, struct timespec
*t
)
57 memset(t
, 0, sizeof(*t
));
58 if (clk_id
== CLOCK_REALTIME
) {
60 int rv
= gettimeofday(&now
, NULL
);
64 t
->tv_sec
= now
.tv_sec
;
65 t
->tv_nsec
= now
.tv_usec
* 1000;
68 } else if (clk_id
== CLOCK_MONOTONIC
) {
69 static uint64_t clock_start_time
= 0;
70 static mach_timebase_info_data_t timebase_info
= {0, 0};
72 uint64_t now
= mach_absolute_time();
74 if (clock_start_time
== 0) {
75 mach_timebase_info(&timebase_info
);
76 clock_start_time
= now
;
79 now
= (uint64_t)((double)(now
- clock_start_time
)
80 * (double)timebase_info
.numer
81 / (double)timebase_info
.denom
);
83 t
->tv_sec
= now
/ 1000000000;
84 t
->tv_nsec
= now
% 1000000000;
87 return -1; // EINVAL - Clock ID is unknown
90 /* if clock_gettime is declared, then __CLOCK_AVAILABILITY will be defined */
91 #ifdef __CLOCK_AVAILABILITY
92 /* If we compiled with Mac OSX 10.12 or later, then clock_gettime will be declared
93 * but it may be NULL at runtime. So we need to check before using it. */
94 int _civet_safe_clock_gettime(int clk_id
, struct timespec
*t
);
96 int _civet_safe_clock_gettime(int clk_id
, struct timespec
*t
) {
98 return clock_gettime(clk_id
, t
);
100 return _civet_clock_gettime(clk_id
, t
);
102 #define clock_gettime _civet_safe_clock_gettime
104 #define clock_gettime _civet_clock_gettime
110 // a milliseconds timer for performance measurement
113 #include <sys/types.h>
115 // WORKAROUND FOR MinGW (some versions - use if normal code does not compile)
116 // It has no _ftime_s and needs explicit inclusion of timeb.h
117 #include <sys/timeb.h>
120 return 1000 * (uint64_t)t
.time
+ t
.millitm
;
122 // NORMAL CODE (use _ftime_s)
124 //if (_ftime_s(&t)) {
127 // return 1000 * t.time + t.millitm;
131 clock_gettime(CLOCK_MONOTONIC
, &t
);
132 return (t
.tv_sec
* 1000 + t
.tv_nsec
/ 1000000);