pthread_exit — terminate calling thread
Compile and link with
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.
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 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
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Copyright (c) 2008 Linux Foundation, written by Michael Kerrisk
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