_LWP_SUSPEND(2)

_LWP_SUSPEND(2) | System Calls Manual | _LWP_SUSPEND(2)

# NAME

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

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

#include <lwp.h>

int
_lwp_suspend(lwpid_t lwp);

int
_lwp_continue(lwpid_t lwp);

# DESCRIPTION

_lwp_suspend() 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().

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

# RETURN VALUES

Upon successful completion, _lwp_suspend() and _lwp_continue() return a value of 0. Otherwise, an error code is returned to indicate the error.

# ERRORS

_lwp_suspend() and _lwp_continue() will fail if:

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

_lwp_suspend() will fail if:

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

# SEE ALSO

_lwp_create(2)

# HISTORY

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

January 13, 2003 | NetBSD 7.1