Provide a single-use thread synchronization mechanism on an event count.
Declared in <bslmt_latch.h>
class Latch;This class defines a thread synchronization mechanism that allows one or more threads to wait until a certain number of operations have been performed by other threads.
| Name | Description |
|---|---|
Unnamed enum | Status codes for timed wait operations. |
| Name | Description |
|---|---|
Latch [constructor] | Constructors |
~Latch [destructor] | Destroy this latch. The behavior is undefined if any threads are waiting on this latch. |
arrive | Decrement the event count by 1 and release waiters if it reaches 0. |
arriveAndWait | Decrement the event count by 1, then wait until the latch is released. |
clockType | Return the clock type used for timeouts. |
countDown | Decrement the event count by numEvents and release waiters if 0. |
currentCount | Return the current number of events for which this latch is waiting. |
timedWait | Block until this latch is released or absTime expires. |
tryWait | Return whether this latch has already been released. |
wait | Block until the number of events this latch waits for reaches 0. |