_LWP_SUSPEND(2) System Calls Manual _LWP_SUSPEND(2)

_lwp_suspend, _lwp_continue — suspend or continue a light-weight process

Standard C Library (libc, -lc)

#include <lwp.h>

int
_lwp_suspend(lwpid_t lwp);

int
_lwp_continue(lwpid_t lwp);

() suspends execution of the LWP specified by lwp. Once an LWP is suspended, subsequent calls to _lwp_suspend() have no effect. The only way to resume execution of a suspended LWP is via _lwp_continue().

() resumes execution of the LWP specified by lwp. Once an LWP is resumed, subsequent calls to _lwp_continue() have no effect.

The _lwp_continue() and _lwp_suspend() functions return the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

_lwp_suspend() and _lwp_continue() will fail if:

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

_lwp_suspend() will fail if:

[]
The LWP specified by lwp is the only LWP in the process.

_lwp_create(2)

The _lwp_create() system call first appeared in NetBSD 2.0.

December 4, 2022 NetBSD 11.0