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Add FAKETIME_WAIT_MS to force pthread_cond_timedwait to wait x ms instead of what its parameters say.

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This prevents us from getting stuck in place when the timestamp changes.
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Mathis Beer
2018-02-19 10:25:13 +01:00
parent 0487e41c34
commit 229ce22fbc
1 changed files with 24 additions and 4 deletions
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28
src/libfaketime.c
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@@ -2519,6 +2519,8 @@ int pthread_cond_timedwait_common(pthread_cond_t *cond, pthread_mutex_t *mutex,
struct timespec tp, tdiff_actual, realtime, faketime;
struct timespec *tf = NULL;
struct pthread_cond_monotonic* e;
char *tmp_env;
int wait_ms;
clockid_t clk_id;
int result;
@@ -2538,14 +2540,32 @@ int pthread_cond_timedwait_common(pthread_cond_t *cond, pthread_mutex_t *mutex,
faketime = realtime;
(void)fake_clock_gettime(clk_id, &faketime);
timespecsub(abstime, &faketime, &tp);
if (user_rate_set)
if ((tmp_env = getenv("FAKETIME_WAIT_MS")) != NULL)
{
timespecmul(&tp, 1.0 / user_rate, &tdiff_actual);
wait_ms = atol(tmp_env);
DONT_FAKE_TIME(result = (*real_clock_gettime)(clk_id, &realtime));
if (result == -1)
{
return EINVAL;
}
tdiff_actual.tv_sec = wait_ms / 1000;
tdiff_actual.tv_nsec = (wait_ms % 1000) * 1000000;
timespecadd(&realtime, &tdiff_actual, &tp);
tf = &tp;
}
else
{
tdiff_actual = tp;
timespecsub(abstime, &faketime, &tp);
if (user_rate_set)
{
timespecmul(&tp, 1.0 / user_rate, &tdiff_actual);
}
else
{
tdiff_actual = tp;
}
}
/* For CLOCK_MONOTONIC, pthread_cond_timedwait uses clock_gettime