2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
8 * You may select, at your option, one of the above-listed licenses.
11 #ifndef TIME_FN_H_MODULE_287987
12 #define TIME_FN_H_MODULE_287987
14 #if defined (__cplusplus)
19 /*-****************************************
21 ******************************************/
22 #include <sys/types.h> /* utime */
24 # include <sys/utime.h> /* utime */
26 # include <utime.h> /* utime */
28 #include <time.h> /* clock_t, clock, CLOCKS_PER_SEC */
32 /*-****************************************
34 ******************************************/
36 #if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
38 typedef uint64_t PTime; /* Precise Time */
40 typedef unsigned long long PTime; /* does not support compilers without long long support */
45 /*-****************************************
47 ******************************************/
48 #if defined(_WIN32) /* Windows */
50 #include <Windows.h> /* LARGE_INTEGER */
51 typedef LARGE_INTEGER UTIL_time_t;
52 #define UTIL_TIME_INITIALIZER { { 0, 0 } }
54 #elif defined(__APPLE__) && defined(__MACH__)
56 #include <mach/mach_time.h>
57 typedef PTime UTIL_time_t;
58 #define UTIL_TIME_INITIALIZER 0
60 #elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
61 && defined(TIME_UTC) /* C11 requires timespec_get, but FreeBSD 11 lacks it, while still claiming C11 compliance */
63 typedef struct timespec UTIL_time_t;
64 #define UTIL_TIME_INITIALIZER { 0, 0 }
66 #else /* relies on standard C90 (note : clock_t measurements can be wrong when using multi-threading) */
68 typedef clock_t UTIL_time_t;
69 #define UTIL_TIME_INITIALIZER 0
74 UTIL_time_t UTIL_getTime(void);
75 PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd);
76 PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd);
78 #define SEC_TO_MICRO ((PTime)1000000)
79 PTime UTIL_clockSpanMicro(UTIL_time_t clockStart);
80 PTime UTIL_clockSpanNano(UTIL_time_t clockStart);
82 void UTIL_waitForNextTick(void);
85 #if defined (__cplusplus)
89 #endif /* TIME_FN_H_MODULE_287987 */