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[common] event: fix long Linux timeouts

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Normalize absolute event deadlines with division and remainder, and widen
millisecond conversion before multiplying. This prevents multi-second
waits from producing EINVAL or wrapping to shorter delays.
This commit is contained in:
Geoffrey McRae
2026-08-12 12:13:26 +10:00
parent 8fb3c4d9f6
commit b411d345d0
1 changed files with 14 additions and 13 deletions
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27
common/src/platform/linux/event.c
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@@ -143,23 +143,24 @@ bool lgWaitEventAbs(LGEvent * handle, struct timespec * ts)
return ret;
}
static bool waitEventNS(LGEvent * handle, uint64_t timeout)
{
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
const uint64_t nsec = (uint64_t)ts.tv_nsec + timeout;
ts.tv_sec += nsec / 1000000000ULL;
ts.tv_nsec = nsec % 1000000000ULL;
return lgWaitEventAbs(handle, &ts);
}
bool lgWaitEventNS(LGEvent * handle, unsigned int timeout)
{
if (timeout == TIMEOUT_INFINITE)
return lgWaitEventAbs(handle, NULL);
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
uint64_t nsec = ts.tv_nsec + timeout;
if(nsec > 1000000000UL)
{
ts.tv_nsec = nsec - 1000000000UL;
++ts.tv_sec;
}
else
ts.tv_nsec = nsec;
return lgWaitEventAbs(handle, &ts);
return waitEventNS(handle, timeout);
}
bool lgWaitEvent(LGEvent * handle, unsigned int timeout)
@@ -167,7 +168,7 @@ bool lgWaitEvent(LGEvent * handle, unsigned int timeout)
if (timeout == TIMEOUT_INFINITE)
return lgWaitEventAbs(handle, NULL);
return lgWaitEventNS(handle, timeout * 1000000U);
return waitEventNS(handle, (uint64_t)timeout * 1000000ULL);
}
bool lgSignalEvent(LGEvent * handle)