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| .\" This file and its contents are supplied under the terms of the |
| .\" Common Development and Distribution License ("CDDL"), version 1.0. |
| .\" You may only use this file in accordance with the terms of version |
| .\" 1.0 of the CDDL. |
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| .\" Copyright 2015 Joyent, Inc. |
| .\" |
| .Dd May 11, 2016 |
| .Dt PCLEARSIG 3PROC |
| .Os |
| .Sh NAME |
| .Nm Pclearsig , |
| .Nm Lclearsig |
| .Nd clear process signals |
| .Sh LIBRARY |
| .Lb libproc |
| .Sh SYNOPSIS |
| .In libproc.h |
| .Ft int |
| .Fo Pclearsig |
| .Fa "struct ps_prochandle *P" |
| .Fc |
| .Ft int |
| .Fo Lclearsig |
| .Fa "struct ps_lwphandle *L" |
| .Fc |
| .Sh DESCRIPTION |
| During normal operation a process may receive a signal. |
| Signals may indicate an error, for example referencing unmapped memory, an alarm |
| firing, requests for information, and users requesting an interruption. |
| For more information on the generation and usage of signals, see |
| .Xr signal.h 3HEAD . |
| .Pp |
| The |
| .Fn Pclearsig |
| function instructs the system to clear any signal pending delivery to |
| a thread in the process represented by the process handle |
| .Fa P . |
| The pending signal will never be delivered to process represented by |
| .Fa P . |
| .Pp |
| The |
| .Fn Lclearsig |
| function is identical to the |
| .Fn Pclearsig |
| function, except rather than operating on the process and its |
| representive thread, it instead operates on the thread handle |
| .Fa L . |
| .Pp |
| The |
| .Fn Pclearsig |
| function only has meaning for active processes. |
| It will fail on process handles corresponding to core files, zombie processes |
| and ELF objects. |
| .Sh RETURN VALUES |
| Upon successful completion, the |
| .Fn Pclearsig |
| function clears pending faults and |
| returns |
| .Sy 0 . |
| Otherwise, |
| .Sy -1 |
| is returned, |
| .Sy errno |
| is set to indicate the error, |
| and no faults are cleared. |
| .Sh ERRORS |
| For a full list of possible errors see the |
| .Sy DIAGNOSTICS |
| section in |
| .Xr proc 4 . |
| .Sh INTERFACE STABILITY |
| .Sy Uncommitted |
| .Sh MT-LEVEL |
| See |
| .Sy LOCKING |
| in |
| .Xr libproc 3LIB . |
| .Sh SEE ALSO |
| .Xr signal.h 3HEAD , |
| .Xr libproc 3LIB , |
| .Xr proc 4 |