NAME
_lwp_wait —
wait for light-weight
process termination
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <lwp.h>
int
_lwp_wait(
lwpid_t
wlwp,
lwpid_t *rlwp);
DESCRIPTION
_lwp_wait() suspends execution of the calling LWP until the
LWP specified by
wlwp terminates. The specified LWP must
not be detached. If
wlwp is 0, then
_lwp_wait() waits for any undetached LWP in the current
process.
If
rlwp is not
NULL
, then it
points to the location where the LWP ID of the exited LWP is stored.
RETURN VALUES
Upon successful completion,
_lwp_wait() returns a value of 0.
Otherwise, an error code is returned to indicate the error.
ERRORS
_lwp_wait() will fail if:
-
-
- [
ESRCH
]
- No undetached LWP can be found in the current process
corresponding to that specified by wlwp.
-
-
- [
EDEADLK
]
- The calling LWP is the only LWP in the process.
-
-
- [
EDEADLK
]
- The LWP ID specified by wlwp is the
LWP ID of the calling LWP.
-
-
- [
EINTR
]
- _lwp_wait() was interrupted by a caught
signal, or the signal did not have the
SA_RESTART
flag set.
SEE ALSO
_lwp_create(2),
_lwp_exit(2)
HISTORY
The
_lwp_wait() system call first appeared in
NetBSD 2.0.