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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 PSYNC 3PROC |
| .Os |
| .Sh NAME |
| .Nm Psync , |
| .Nm Lsync |
| .Nd synchronize cached tracing flags and modifications |
| .Sh SYNOPSIS |
| .Lb libproc |
| .In libproc.h |
| .Ft void |
| .Fo Psync |
| .Fa "struct ps_prochandle *P" |
| .Fc |
| .Ft void |
| .Fo Lsync |
| .Fa "struct ps_lwphandle *L" |
| .Fc |
| .Sh DESCRIPTION |
| The |
| .Fn Psync |
| function synchronizes modifications to the process handle |
| .Fa P |
| back to the underlying active process. |
| The |
| .Fn Psync |
| function ensures that any outstanding process holds, register |
| modifications, signal injections, and modifications to the various fault |
| and system call tracing flags are taken care of. |
| .Pp |
| Normally this function is not required as other library routines take |
| care of synchronizing this state out to the process when it is required. |
| If the underlying /proc file system routines are used outside of the |
| library, calling this function may be required. |
| .Pp |
| The |
| .Fn Psync |
| function is only meaningful for active processes. |
| It will do nothing on process handles that refer to core files, zombie |
| processes, and ELF objects. |
| .Pp |
| The |
| .Fn Lsync |
| function is equivalent to the |
| .Fn Psync |
| function, except rather than operating on the entire process and its |
| representative thread, it instead operates on the thread handle |
| .Fa L . |
| .Sh INTERFACE STABILITY |
| .Sy Uncommitted |
| .Sh MT-LEVEL |
| See |
| .Sy LOCKING |
| in |
| .Xr libproc 3LIB . |
| .Sh SEE ALSO |
| .Xr libproc 3LIB , |
| .Xr Pfault 3PROC , |
| .Xr Pputareg 3PROC , |
| .Xr Psetfault 3PROC , |
| .Xr Psetsignal 3PROC , |
| .Xr Psetsysentry 3PROC , |
| .Xr Psetsysexit 3PROC , |
| .Xr Psignal 3PROC , |
| .Xr Psysentry 3PROC , |
| .Xr Psysexit 3PROC , |
| .Xr proc 4 |