FSH_SEMWAIT - Wait for clear

Purpose   

This function allows an FSD to wait for an event. The event is signaled by 
a call to FSH_SEMCLEAR. 

Calling Sequence   

int far pascal FSH_SEMWAIT(pSem, cmsTimeout)

void far * pSem;
unsigned long cmsTimeout;

Where   

pSem is the handle to the system semaphore or the long address of the ram 
semaphore. 

cmsTimeout is the number of milliseconds to wait. 
  

Returns   

If no error is detected, a zero error code is returned.  If an error is 
detected, one of the following error codes is returned: 

oERROR_SEM_TIMEOUT 
the time-out expired without gaining access to the semaphore. 

oERROR_INTERRUPT 
the current thread received a signal. 

oERROR_PROTECTION_VIOLATION 
the semaphore is inaccessible. 
  

Remarks   

The caller may return after the time-out period has expired without 
receiving an ERROR_SEM_TIMEOUT. Semaphore time-out values, therefore, 
should not be used for exact timing and sequence. 

FSH_SEMWAIT may block. 

Note:   OS/2 does not validate input parameters. An FSD, therefore, should 
call FSH_PROBEBUF where appropriate.