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_LWP_WAKEUP(2) |
System Calls Manual |
_LWP_WAKEUP(2) |
NAME
_lwp_wakeup — make a blocked light-weight process runnable
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <lwp.h>
int
_lwp_wakeup(lwpid_t lwp);
DESCRIPTION
_lwp_wakeup() makes a blocked LWP runnable. The blocked LWP must be in LSSLEEP state. Unblocking the LWP does not guarantee that it will make progress; it may block again as soon as it resumes execution in the kernel.
RETURN VALUES
Upon successful completion, _lwp_wakeup() returns a value of 0. Otherwise, an error code is returned to indicate the error.
ERRORS
_lwp_wakeup() will fail if:
-
[ESRCH]
-
No LWP can be found in the current process corresponding to that specified by lwp.
-
[ENODEV]
-
The specified LWP is not in LSSLEEP state.
-
[EBUSY]
-
The specified LWP is blocked in an uninterruptible sleep.
HISTORY
The _lwp_wakeup() system call first appeared in NetBSD 2.0.
