36 lines
968 B
Markdown
36 lines
968 B
Markdown
# PR_CNotify
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Notify a thread waiting on a change in the state of monitored data.
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## Syntax
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```{code}
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#include <prcmon.h>
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PRStatus PR_CNotify(void *address);
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```
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### Parameter
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The function has the following parameter:
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`address`
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: The address of the monitored object. The calling thread must be in
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the monitor defined by the value of the address.
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### Returns
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> - `PR_SUCCESS` indicates that the calling thread is the holder of the
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> mutex for the monitor referred to by the address parameter.
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> - `PR_FAILURE` indicates that the monitor has not been entered by the
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> calling thread.
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## Description
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Using the value specified in the `address` parameter to find a monitor
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in the monitor cache, {ref}`PR_CNotify` notifies single a thread waiting
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for the monitor's state to change. If a thread is waiting on the monitor
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(having called {ref}`PR_CWait`), then that thread is made ready. As soon as
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the thread is scheduled, it attempts to reenter the monitor.
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