pthread_exit - terminate calling thread
void pthread_exit(void *retval);
Compile and link with -pthread.
() 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 calls pthread_join(3)
Any clean-up handlers established by pthread_cleanup_push(3)
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
with an exit status of zero; thus, process-shared
resources are released and functions registered using atexit(3)
This function does not return to the caller.
This function always succeeds.
For an explanation of the terms used in this section, see attributes(7)
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
Currently, there are limitations in the kernel implementation logic for
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
This page is part of release 4.15 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at