Author: anthm Date: Wed Jan 23 10:26:57 2008 New Revision: 7322 Modified: freeswitch/trunk/src/switch_time.c Log: detect broken monotonic clocks Modified: freeswitch/trunk/src/switch_time.c ============================================================================== --- freeswitch/trunk/src/switch_time.c (original) +++ freeswitch/trunk/src/switch_time.c Wed Jan 23 10:26:57 2008 @@ -96,17 +96,27 @@ return now; } +#if defined(HAVE_CLOCK_GETTIME) +static int MONO = 1; +#else +static int MONO = 0; +#endif + static switch_time_t time_now(int64_t offset) { switch_time_t now; #if defined(HAVE_CLOCK_GETTIME) - struct timespec ts; - clock_gettime(CLOCK_MONOTONIC, &ts); - now = ts.tv_sec * APR_USEC_PER_SEC + (ts.tv_nsec/1000) + offset; - -#else + if (MONO) { + struct timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + now = ts.tv_sec * APR_USEC_PER_SEC + (ts.tv_nsec/1000) + offset; + } else { +#endif now = switch_time_now(); + +#if defined(HAVE_CLOCK_GETTIME) + } #endif return now; @@ -283,6 +293,24 @@ runtime.sps = runtime.sps_total; switch_mutex_unlock(runtime.throttle_mutex); + if (MONO) { + int loops; + for(loops = 0; loops < 3; loops++) { + ts = time_now(0); + /* if it returns the same value every time it won't be of much use.*/ + if (ts == last) { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Broken MONOTONIC Clock Detected!, Support Disabled.\n"); + MONO = 0; + runtime.reference = switch_time_now(); + runtime.initiated = runtime.reference; + } + switch_yield(STEP_MIC); + last = ts; + } + } + + ts = 0; + last = 0; while (globals.RUNNING == 1) { runtime.reference += STEP_MIC;