_lwp_wait(2) [netbsd man page]

_LWP_WAIT(2)						      BSD System Calls Manual						      _LWP_WAIT(2)

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.

BSD
								 January 13, 2003							       BSD

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_LWP_UNPARK(2)						      BSD System Calls Manual						    _LWP_UNPARK(2)

NAME

     _lwp_unpark -- resume execution of a waiting LWP

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <lwp.h>

     int
     _lwp_unpark(lwpid_t lwp, const void *hint);

DESCRIPTION

     _lwp_unpark() resumes execution of the light-weight process lwp.

     The target LWP is assumed to be waiting in the kernel as a result of a call to _lwp_park().  If the target LWP is not currently waiting, it
     will return immediately upon the next call to _lwp_park().

     See _lwp_park(2) for a description of the hint argument.

RETURN VALUES

     A 0 value indicates that the call succeeded.  A -1 return value indicates an error occurred and errno is set to indicate the reason.

ERRORS

     [ESRCH]   No LWP can be found in the current process corresponding to that specified by lwp.

SEE ALSO

     _lwp_park(2), _lwp_unpark_all(2), _lwp_wakeup(2)

HISTORY

     The _lwp_unpark() system call first appeared in NetBSD 5.0.

BSD
								 January 20, 2007							       BSD

Linux and UNIX Man Pages

_lwp_wait(2) [netbsd man page]

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