01-12-2014
kill is to a process and to a thread spawned within the context of a process, should be controlled by that process if the signals/control are being triggered externally with respect to the process. You know the thread that needs to receive action, bind the external signal to the process then the process needs to map the action to its specific thread from the thread stack.
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Hi All,
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LEARN ABOUT X11R4
thr_kill
thr_kill(3C) thr_kill(3C)
NAME
thr_kill - send a signal to a thread
SYNOPSIS
cc -mt [ flag... ] file... [ library... ]
#include <signal.h>
#include <thread.h>
int thr_kill(thread_t thread, int sig);
The thr_kill() function sends the sig signal to the thread designated by thread. The thread argument must be a member of the same process
as the calling thread. The sig argument must be one of the signals listed in signal.h(3HEAD), with the exception of SIGCANCEL being
reserved and off limits to thr_kill(). If sig is 0, a validity check is done for the existence of the target thread; no signal is sent.
Upon successful completion, thr_kill() returns 0. Otherwise, an error number is returned. In the event of failure, no signal is sent.
The thr_kill() function will fail if:
EINVAL The sig argument value is not zero and is an invalid or an unsupported signal number.
ESRCH No thread was found that corresponded to the thread designated by thread ID.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
kill(2), sigaction(2), raise(3C), signal.h(3HEAD), thr_self(3C), attributes(5), standards(5)
23 Mar 2005 thr_kill(3C)