tv.i64 - now.i64) / 10000;
/* Don't allow the timeout to be negative */
if (millis < 0)
return 0;
/*
Make sure the calculated timeout does not exceed original timeout
value which could cause "wait for ever" if system time changes
*/
if (millis > abstime->max_timeout_msec)
millis= abstime->max_timeout_msec;
if (millis > UINT_MAX)
millis= UINT_MAX;
return (DWORD)millis;
#else
/*
Convert timespec to millis and subtract current time.
my_getsystime() returns time in 100 ns units.
*/
ulonglong future= abstime->tv_sec * 1000 + abstime->tv_nsec / 1000000;
ulonglong now= my_getsystime() / 10000;
/* Don't allow the timeout to be negative. */
if (future < now)
return 0;
return (DWORD)(future - now);
#endif
}
#endif /* _WIN32 */
static inline int native_cond_init(native_cond_t *cond)
{
#ifdef _WIN32
InitializeConditionVariable(cond);
return 0;
#else
/* pthread_condattr_t is not used in MySQL */
return pthread_cond_init(cond, NULL);
#endif
}
static inline int native_cond_destroy(native_cond_t *cond)
{
#ifdef _WIN32
return 0; /* no destroy function */
#else
return pthread_cond_destroy(cond);
#endif
}
static inline int native_cond_timedwait(native_cond_t *cond,
native_mutex_t *mutex,
const struct timespec *abstime)
{
#ifdef _WIN32
DWORD timeout= get_milliseconds(abstime);
if (!SleepConditionVariableCS(cond, mutex, timeout))
return ETIMEDOUT;
return 0;
#else
return pthread_cond_timedwait(cond, mutex, abstime);
#endif
}
static inline int native_cond_wait(native_cond_t *cond, native_mutex_t *mutex)
{
#ifdef _WIN32
if (!SleepConditionVariableCS(cond, mutex, INFINITE))
return ETIMEDOUT;
return 0;
#else
return pthread_cond_wait(cond, mutex);
#endif
}
static inline int native_cond_signal(native_cond_t *cond)
{
#ifdef _WIN32
WakeConditionVariable(cond);
return 0;
#else
return pthread_cond_signal(cond);
#endif
}
static inline int native_cond_broadcast(native_cond_t *cond)
{
#ifdef _WIN32
WakeAllConditionVariable(cond);
return 0;
#else
return pthread_cond_broadcast(cond);
#endif
}
#ifdef SAFE_MUTEX
int safe_cond_wait(native_cond_t *cond, my_mutex_t *mp,
const char *file, uint line);
int safe_cond_timedwait(native_cond_t *cond, my_mutex_t *mp,
const struct timespec *abstime,
const char *file, uint line);
#endif
static inline int my_cond_timedwait(native_cond_t *cond, my_mutex_t *mp,
const struct timespec *abstime
#ifdef SAFE_MUTEX
, const char *file, uint line
#endif
)
{
#ifdef SAFE_MUTEX
return safe_cond_timedwait(cond, mp, abstime, file, line);
#else
return native_cond_timedwait(cond, mp, abstime);
#endif
}
static inline int my_cond_wait(native_cond_t *cond, my_mutex_t *mp
#ifdef SAFE_MUTEX
, const char *file, uint line
#endif
)
{
#ifdef SAFE_MUTEX
return safe_cond_wait(cond, mp, file, line);
#else
return native_cond_wait(cond, mp);
#endif
}
C_MODE_END
#endif /* THR_COND_INCLUDED */