0 | NO_ERROR | Successfully obtained semaphore ownership |
6 | ERROR_INVALID_HANDLE | Error, The value in phmtxSemaphore does not point to a valid semaphore, The calling process must first have access to the semaphore in question |
95 | ERROR_INTERRUPT | Error, The thread has become unblocked by an external event such as an exception, ownership has not been obtained |
103 | ERROR_TOO_MANY_SEM_REQUESTS | Error, The semaphore usage count system limit, of 65535, has been exceeded |
105 | ERROR_SEM_OWNER_DIED | Error, The semaphore owner has died without releasing the semaphore |
640 | ERROR_TIMEOUT | Error, The caller was blocked for ulTimeout milliseconds but ownership of the semaphore could not be obtained within this time limit, Time has expired |
Ownership of a semaphore with multiple threads requesting it is
granted to the thread with the highest priority. Among threads
with the same priority, ownership is granted in a First-In-First-Out
(FIFO) manner.
Relevant Structures
Gotchas
The process calling DosRequestMutexSem must first obtain access to
the semaphore in question or ERROR_INVALID_HANDLE will be returned.
Sample Code
Last modified May 29/1996
Please send all errors, comments, and suggestions to:
timur@vnet.ibm.com
The OS/2 API Project |
DosRequestMutexSem |