diff options
Diffstat (limited to 'programs/util.h')
| -rw-r--r-- | programs/util.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/programs/util.h b/programs/util.h index fc7f63e..d74db0d 100644 --- a/programs/util.h +++ b/programs/util.h @@ -30,8 +30,9 @@ extern "C" { * Dependencies ******************************************/ #include "platform.h" /* PLATFORM_POSIX_VERSION */ -#include <stdlib.h> /* malloc */ #include <stddef.h> /* size_t, ptrdiff_t */ +#include <stdlib.h> /* malloc */ +#include <string.h> /* strlen, strncpy */ #include <stdio.h> /* fprintf */ #include <sys/types.h> /* stat, utime */ #include <sys/stat.h> /* stat */ @@ -141,6 +142,7 @@ extern "C" { * Time functions ******************************************/ #if defined(_WIN32) /* Windows */ + typedef LARGE_INTEGER UTIL_time_t; UTIL_STATIC UTIL_time_t UTIL_getTime(void) { UTIL_time_t x; QueryPerformanceCounter(&x); return x; } UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) @@ -165,7 +167,9 @@ extern "C" { } return 1000000000ULL*(clockEnd.QuadPart - clockStart.QuadPart)/ticksPerSecond.QuadPart; } + #elif defined(__APPLE__) && defined(__MACH__) + #include <mach/mach_time.h> typedef U64 UTIL_time_t; UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return mach_absolute_time(); } @@ -177,7 +181,7 @@ extern "C" { mach_timebase_info(&rate); init = 1; } - return (((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom))/1000ULL; + return (((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom)) / 1000ULL; } UTIL_STATIC U64 UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd) { @@ -189,7 +193,9 @@ extern "C" { } return ((clockEnd - clockStart) * (U64)rate.numer) / ((U64)rate.denom); } -#elif (PLATFORM_POSIX_VERSION >= 200112L) + +#elif (PLATFORM_POSIX_VERSION >= 200112L) && (defined __UCLIBC__ || (defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 17) || __GLIBC__ > 2) ) ) + #include <time.h> typedef struct timespec UTIL_time_t; UTIL_STATIC UTIL_time_t UTIL_getTime(void) @@ -227,7 +233,9 @@ extern "C" { nano += diff.tv_nsec; return nano; } + #else /* relies on standard C (note : clock_t measurements can be wrong when using multi-threading) */ + typedef clock_t UTIL_time_t; UTIL_STATIC UTIL_time_t UTIL_getTime(void) { return clock(); } UTIL_STATIC U64 UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd) { return 1000000ULL * (clockEnd - clockStart) / CLOCKS_PER_SEC; } @@ -242,6 +250,12 @@ UTIL_STATIC U64 UTIL_clockSpanMicro(UTIL_time_t clockStart) return UTIL_getSpanTimeMicro(clockStart, clockEnd); } +/* returns time span in nanoseconds */ +UTIL_STATIC U64 UTIL_clockSpanNano(UTIL_time_t clockStart) +{ + UTIL_time_t const clockEnd = UTIL_getTime(); + return UTIL_getSpanTimeNano(clockStart, clockEnd); +} UTIL_STATIC void UTIL_waitForNextTick(void) { |