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4.10.2 cnd
The cnd class implements condition variables, which can be used in
conjunction with the mtx class to wait for a
condition to occur.
void cnd_new(cw_cnd_t *a_cnd):
- Input(s):
-
- a_cnd:
- Pointer to space for a cnd.
- Output(s):
- None.
- Exception(s):
- None.
- Description:
- Constructor.
void cnd_delete(cw_cnd_t *a_cnd):
- Input(s):
-
- a_cnd:
- Pointer to a cnd.
- Output(s):
- None.
- Exception(s):
- None.
- Description:
- Destructor.
void cnd_signal(cw_cnd_t *a_cnd):
- Input(s):
-
- a_cnd:
- Pointer to a cnd.
- Output(s):
- None.
- Exception(s):
- None.
- Description:
- Signal one thread waiting on a_cnd, if there are any
waiters.
void cnd_broadcast(cw_cnd_t *a_cnd):
- Input(s):
-
- a_cnd:
- Pointer to a cnd.
- Output(s):
- None.
- Exception(s):
- None.
- Description:
- Signal all threads waiting on a_cnd.
bool cnd_timedwait(cw_cnd_t *a_cnd, cw_mtx_t
*a_mtx, const struct timespec *a_timeout):
- Input(s):
-
- a_cnd:
- Pointer to a cnd.
- a_mtx:
- Pointer to a mtx.
- a_timeout:
- Timeout, specified as an absolute time interval.
- Output(s):
-
- retval:
-
- false:
- Success.
- true:
- Timeout.
- Exception(s):
- None.
- Description:
- Wait for a_cnd for at least a_time.
void cnd_wait(cw_cnd_t *a_cnd, cw_mtx_t *a_mtx):
- Input(s):
-
- a_cnd:
- Pointer to a cnd.
- a_mtx:
- Pointer to a mtx.
- Output(s):
- None.
- Exception(s):
- None.
- Description:
- Wait for a_cnd.
Next: 4.10.3 dch
Up: 4.10 Classes
Previous: 4.10.1 ch
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Jason Evans
2005-03-16