PTHREAD_EXIT(3) Linux Programmer's Manual PTHREAD_EXIT(3)
pthread_exit - terminate calling thread
void pthread_exit(void *retval);
Compile and link with -pthread.
The pthread_exit() function terminates the calling thread and returns a value via retval
that (if the thread is joinable) is available to another thread in the same process that
Any clean-up handlers established by pthread_cleanup_push(3) that have not yet been
popped, are popped (in the reverse of the order in which they were pushed) and executed.
If the thread has any thread-specific data, then, after the clean-up handlers have been
executed, the corresponding destructor functions are called, in an unspecified order.
When a thread terminates, process-shared resources (e.g., mutexes, condition variables,
semaphores, and file descriptors) are not released, and functions registered using
atexit(3) are not called.
After the last thread in a process terminates, the process terminates as by calling
exit(3) with an exit status of zero; thus, process-shared resources are released and func-
tions registered using atexit(3) are called.
This function does not return to the caller.
This function always succeeds.
Performing a return from the start function of any thread other than the main thread
results in an implicit call to pthread_exit(), using the function's return value as the
thread's exit status.
To allow other threads to continue execution, the main thread should terminate by calling
pthread_exit() rather than exit(3).
The value pointed to by retval should not be located on the calling thread's stack, since
the contents of that stack are undefined after the thread terminates.
Currently, there are limitations in the kernel implementation logic for wait(2)ing on a
stopped thread group with a dead thread group leader. This can manifest in problems such
as a locked terminal if a stop signal is sent to a foreground process whose thread group
leader has already called pthread_exit().
pthread_create(3), pthread_join(3), pthreads(7)
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Linux 2009-03-30 PTHREAD_EXIT(3)