The
pthread_atfork()
function declares fork handlers to be called before and after
fork(2),
in the context of the thread that called
fork(2).
The handlers registered with
pthread_atfork()
are called at the moments in time described below:
|
| prepare
|
| |
Before
fork(2)
processing commences in the parent process.
If more than one
prepare
handler is registered they will be called in the opposite order
they were registered.
|
| parent
|
| |
After
fork(2)
completes in the parent process.
If more than one
parent
handler is registered they will be called in the same order
they were registered.
|
| child
|
| |
After
fork(2)
processing completes in the child process.
If more than one
child
handler is registered they will be called in the same order
they were registered.
|
|
If no handling is desired at one or more of these three points,
a null pointer may be passed as the corresponding fork handler.
