CondSignal
Restarts a thread suspended by a call to CondWait
CondSignal ( handle )
handle
Once the conditional is created with CondCreate and the threads are started, one of more of them can be set to CondWait for the conditional, they will be stopped until some other thread CondSignals that the waiting thread can restart. CondBroadcast can be used to restart all threads waiting for the conditional. At the end of the program CondDestroy must be used to avoid leaking resources in the OS.
Syntax
Usage
CondSignal ( handle )
Parameters
handle
The handle of a conditional variable, or the null pointer (0) on failure.
Description
Once the conditional is created with CondCreate and the threads are started, one of more of them can be set to CondWait for the conditional, they will be stopped until some other thread CondSignals that the waiting thread can restart. CondBroadcast can be used to restart all threads waiting for the conditional. At the end of the program CondDestroy must be used to avoid leaking resources in the OS.
Example
Dialect Differences
- Threading is not allowed in -lang qb
Platform Differences
- Condsignal is not available with the DOS version / target of FreeBASIC, because multithreading is not supported by DOS kernel nor the used extender.
- In Linux the threads are always started in the order they are created, this can't be assumed in Win32. It's an OS, not a FreeBASIC issue.
Differences from QB
- New to FreeBASIC
See also