diff options
Diffstat (limited to 'src/sleep.cc')
| -rw-r--r-- | src/sleep.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/sleep.cc b/src/sleep.cc index 1512ac9..4609d54 100644 --- a/src/sleep.cc +++ b/src/sleep.cc @@ -24,6 +24,10 @@ #include <windows.h> #endif +#ifdef BENCHMARK_OS_ZOS +#include <unistd.h> +#endif + namespace benchmark { #ifdef BENCHMARK_OS_WINDOWS // Window's Sleep takes milliseconds argument. @@ -33,11 +37,23 @@ void SleepForSeconds(double seconds) { } #else // BENCHMARK_OS_WINDOWS void SleepForMicroseconds(int microseconds) { +#ifdef BENCHMARK_OS_ZOS + // z/OS does not support nanosleep. Instead call sleep() and then usleep() to + // sleep for the remaining microseconds because usleep() will fail if its + // argument is greater than 1000000. + div_t sleepTime = div(microseconds, kNumMicrosPerSecond); + int seconds = sleepTime.quot; + while (seconds != 0) + seconds = sleep(seconds); + while (usleep(sleepTime.rem) == -1 && errno == EINTR) + ; +#else struct timespec sleep_time; sleep_time.tv_sec = microseconds / kNumMicrosPerSecond; sleep_time.tv_nsec = (microseconds % kNumMicrosPerSecond) * kNumNanosPerMicro; while (nanosleep(&sleep_time, &sleep_time) != 0 && errno == EINTR) ; // Ignore signals and wait for the full interval to elapse. +#endif } void SleepForMilliseconds(int milliseconds) { |