_lwp_suspend(2) System Calls _lwp_suspend(2)NAME
_lwp_suspend, _lwp_continue - continue or suspend LWP execution
SYNOPSIS
#include <sys/lwp.h>
int _lwp_suspend(lwpid_t target_lwp);
int _lwp_continue(lwpid_t target_lwp);
DESCRIPTION
The _lwp_suspend() function immediately suspends the execution of the
LWP specified by target_lwp. On successful return from _lwp_suspend(),
target_lwp is no longer executing. Once a thread is suspended, subse‐
quent calls to _lwp_suspend() have no affect.
The _lwp_continue() function resumes the execution of a suspended LWP.
Once a suspended LWP is continued, subsequent calls to _lwp_continue()
have no effect.
A suspended LWP will not be awakened by a signal. The signal stays
pending until the execution of the LWP is resumed by _lwp_continue().
RETURN VALUES
Upon successful completion, 0 is returned. A non-zero value indicates
an error.
ERRORS
If the following condition occurs, _lwp_suspend() and _lwp_continue()
fail and return the corresponding value:
ESRCH The target_lwpid argument cannot be found in the current
process.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Async-Signal-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOattributes(5)SunOS 5.11 13 Aug 2001 _lwp_suspend(2)
