Is there any way to send signal to a thread from another process?

Question

I want to send a signal from a process to a thread that is created from another process (that have not created the thread.

What I know about this that:

• raise : sends signal to same process

• pthread_kill can send singal to a thread from same prcess, ie that created that thread. you cannot use pthread_kill to send a signal to thread from another process.

• kill sends signal to a process

Is there any way to send signal to a thread from another process?

Hope I am clear!!! NOTE: I am new to unix and threading

Answer 1

You Should Read About

1. pthread_signal()

Should set you in the right direction

Answer 2

There is an appropriately named tkill(2) :

 tkill, tgkill - send a signal to a thread tgkill() sends the signal sig to the thread with the thread ID tid 

You can get a tid using gettid(2) .

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Beware: the concept of a TID and therefore everything having to do with one is Linux-specific.