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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | NOTES | BUGS | SEE ALSO | COLOPHON |
PTHREAD_EXIT(3) Linux Programmer's Manual PTHREAD_EXIT(3)
pthread_exit - terminate calling thread
#include <pthread.h>
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 calls pthread_join(3).
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 functions registered using
atexit(3) are called.
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).
┌───────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├───────────────┼───────────────┼─────────┤
│pthread_exit() │ Thread safety │ MT-Safe │
└───────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
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)
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2015-08-08 PTHREAD_EXIT(3)
Pages that refer to this page: prctl(2), pthread_cancel(3), pthread_cleanup_push(3), pthread_create(3), pthread_detach(3), pthread_join(3), pthread_tryjoin_np(3), proc(5), pthreads(7)