pvm_mytid

Arguments

tid

integer, the task identifier of the calling PVM process. Values less than zero indicate an error.

Description

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 value will be will be < 0.

See Also

• pvm_tidtohost — returns the host of the specified PVM process.
• pvm_parent — tid of the process that spawned the calling process.