PSIGNAL(3PROC) | Process Control Library Functions | PSIGNAL(3PROC) |
Psignal
— set
signal tracing action
Process Control Library (libproc, -lproc)
#include
<libproc.h>
int
Psignal
(struct ps_prochandle *P,
int which, int stop);
The
Psignal
()
function sets the signal tracing flag for the process handle
P. If stop is
non-zero
it causes the process handle to stop threads that encounter the signal
which. If stop is
zero, then
it disables tracing for the signal which.
The signal constants, representing valid values for
which, can be found in
signal.h(3HEAD). The signal
SIGKILL
may not be stopped.
Note, only active processes may have their signal tracing flags updated. Process handles that refer to core files, zombie processes, and files do not have signal tracing flags. Calling this function on them is an error.
Upon successful completion, the Psignal
()
function returns the previous disposition of the signal
which. It returns 1 if it was set
and 0 if not.
Otherwise, -1 is returned and
errno is
set to indicate the error.
The Psignal
() function will fail if:
See LOCKING in libproc(3LIB).
May 11, 2016 | OmniOS |