pthread_exit man page on Archlinux

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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	corre‐
       sponding destructor functions are called, in an unspecified order.

       When a thread terminates, process-shared resources (e.g., mutexes, con‐
       dition 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

       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 sig‐
       nal 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 3.65 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at

Linux				  2009-03-30		       PTHREAD_EXIT(3)

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