Kill all parents child threads from a child thread in C++

[Superposed_Cat]

I have a C++ program that starts two threads from the parent thread, I need to kill both children from a child thread.

____> b
|
a -
|_____> c

I need to kill b & c from b. Issue is, I can't use simple flags, as c waits for input using cin.
Any help appreciated.

 

[phyzguy]

Can't you pass a message back to a and have a kill both threads when it receives the message?

 

[jim mcnamara]

You need the threadid of b and of c. Store them in global structure by parent as each thread is created. Then call pthread_kill() on each thread being sure to kill "yourself" last.
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxbd00/ptkill.htm
This is not greatr program design BTW. A better approach might be to send a SIGUSER1 from thread b to parent, and then have the parent call pthread_kill on everybody.