Get the level of thread concurrency
#include <pthread.h> int pthread_getconcurrency( void );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The QNX Neutrino RTOS doesn't support the multiplexing of user threads on top of several kernel scheduled entities. As such, the pthread_setconcurrency() and pthread_getconcurrency() functions are provided for source code compatibility but they have no effect when called. To maintain the function semantics, the new_level parameter is saved when pthread_setconcurrency() is called so that a subsequent call to pthread_getconcurrency() returns the same value.
The concurrency level set by a previous call to pthread_setconcurrency(), or 0 if there was no previous call.
POSIX 1003.1 OB XSI. This function is marked as obsolescent, and may be removed from a future version of the standard.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | Yes |
| Thread | Yes |