MYTID(3PVM)

💖 MYTID — bestie, who even am I?? (the pvm_mytid page, from PVM Version 3.4, manual section 3PVM)

okay so imagine you're a lil process just vibing in the virtual machine and you're like... what's my name. what's my number. this page is the answer. it's giving "introduce yourself to the group chat". 🫶

---

✨ NAME ✨

pvm_mytid — literally just returns the tid of the calling process. that's it. that's the whole job. iconic behaviour honestly 👑

---

🌸 SYNOPSIS 🌸

C bestie:

int tid = pvm_mytid( void )

Fortran bestie:

call pvmfmytid( tid )

---

🎀 PARAMETERS 🎀

• tid — an Integer that hands back the task identifier of the calling PVM process. and listen, if it comes back less than zero, that is an error, not a personality trait. 😭

---

💅 DESCRIPTION 💅

The routine pvm_mytid enrolls this process into PVM on its first call. like, first day of school, signing the attendance sheet, boom, you're in. 💫

It also generates a unique tid if this process was not created by pvm_spawn. and pvm_mytid returns the tid of the calling process — and yes bestie, you can call it multiple times in an application. spam it. she doesn't mind. 🙈

real talk though: any PVM system call (not just pvm_mytid) will enroll a task in PVM if the task is not enrolled before the call. so like, you're getting enrolled whether you asked or not. main character energy fr fr.

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
• a process ID field

This information is used by PVM and is not expected to be used by applications. like, that's for the system's eyes only, bestie. Applications should not attempt to predict or interpret the tid — with the exception of calling tidtohost(). that's the one glow-up exception. ✨

⚠️ and if PVM has not been started before an application calls pvm_mytid, the returned tid will be < 0. no PVM, no identity. it's giving ghosted. 💀

---

🌈 EXAMPLES 🌈

C:

tid = pvm_mytid( );

Fortran:

CALL PVMFMYTID( TID )

---

🔥 ERRORS 🔥

this error condition can be returned by pvm_mytid:

• PvmSysErr — pvmd not responding. 🫠 she's not picking up the phone. not answering the texts. not responding. (this is the bad ending, bestie.)

---

🦋 SEE ALSO 🦋

• pvm_tidtohost(3PVM)
• pvm_parent(3PVM)

---

okay that's the whole page!! ty for reading my little Unix lecture, you ate that 💅

this was MYTID(3PVM) from PVM Version 3.4, dated 30 August, 1993 — yeah bestie, 1993, she's vintage, she's an antique, she's still serving. 🎀