MYTID(3PVM)

NAME
pvm_mytid - Returns the tid of the calling process.

SYNOPSIS
C    int tid = pvm_mytid( void )
Fortran    call pvmfmytid( tid )

PARAMETERS

tid Integer returning the task identifier of the calling PVM process. Values less than zero indicate an error.

DISCUSSION
The routine pvm_mytid enrolls this process into PVM on its first call. It also generates a unique tid if this process was not created by pvm_spawn. pvm_mytid returns the tid of the calling process and can be called multiple times in an application.

Any PVM system call (not just pvm_mytid) will enroll a task in PVM if the task is not enrolled before the call.

The tid is a 32 bit positive integer created by the local pvmd. The 32 bits are divided into fields that encode various information about this process such as its location in the virtual machine (i.e. local pvmd address), the CPU number in the case where the process is on a multiprocessor, and a process ID field. This information is used by PVM and is not expected to be used by applications. Applications should not attempt to predict or interpret the tid with the exception of calling tidtohost()

If PVM has not been started before an application calls pvm_mytid the returned tid will be < 0.

EXAMPLES
C:
	tid = pvm_mytid( );

Fortran:
	CALL PVMFMYTID( TID )

ERRORS
This error condition can be returned by pvm_mytid
	PvmSysErr	pvmd not responding.

SEE ALSO
tidtohost(3PVM), parent(3PVM)