DosGetPID

Bindings:  C, MASM 

This call returns the current process ID, thread ID, and the process ID of 
the parent process. 

 DosGetPID     (ProcessIDs) 
 

 ProcessIDs (PPIDINFO) - output 
    Address of the structure where the ID information is returned. 

    pid (PID) 
       Current process identifier. 

    tid (TID) 
       Thread (of the current process) identifier. 

    pidParent (PID) 
       Parent process (of the current process) identifier. 

 rc (USHORT) - return 
    Return code description is: 

    0         NO_ERROR 
 
 Remarks 

 The process ID may be used to generate uniquely named temporary files, or 
 for communication with signals. For more information on signals, see 
 DosFlagProcess and  DosSendSignal. 

 In the OS/2 environment, thread IDs are used with calls that manipulate 
 threads in the current process.  For more information, see 
 DosSuspendThread, DosResumeThread, DosGetPrty, and DosSetPrty. 

 If the application is executing in the OS/2 environment, it is more 
 efficient to obtain these variables by calling DosGetInfoSeg instead of 
 DosGetPID. However, applications written to the family API cannot depend 
 on the availability of DosGetInfoSeg. 

 To get an ID for a process other than the current process or its parent 
 process, issue DosGetPPID.