[R-gregmisc-users] SF.net SVN: r-gregmisc: [1064] trunk/fork/R

[<wa...@us...>]

Revision: 1064
          http://svn.sourceforge.net/r-gregmisc/?rev=1064&view=rev
Author:   warnes
Date:     2007-03-06 14:44:25 -0800 (Tue, 06 Mar 2007)

Log Message:
-----------
Add wrappers for C functions to control setting/restoring child
process signal handler.

Added Paths:
-----------
    trunk/fork/R/handleSIGCLD.R
    trunk/fork/R/restoreSIGCLD.R

Added: trunk/fork/R/handleSIGCLD.R
===================================================================
--- trunk/fork/R/handleSIGCLD.R	                        (rev 0)
+++ trunk/fork/R/handleSIGCLD.R	2007-03-06 22:44:25 UTC (rev 1064)
@@ -0,0 +1,10 @@
+# setup a a 'dummy' SIGCLD hander to handle child process
+# notifications. Hopefully on both BSD and Sys5 derived systems, this
+# should cause child processes to exit and die cleanly, IE without
+# becoming zombies.
+
+handleSIGCLD <- function()
+  {
+    .C("R_install_sigcld_handler")
+    invisible(NULL)
+  }

Added: trunk/fork/R/restoreSIGCLD.R
===================================================================
--- trunk/fork/R/restoreSIGCLD.R	                        (rev 0)
+++ trunk/fork/R/restoreSIGCLD.R	2007-03-06 22:44:25 UTC (rev 1064)
@@ -0,0 +1,6 @@
+# Restore the original SIGCLD hander. This reverses the action of 'handleSIGCLD'.
+restoreSIGCLD <- function()
+  {
+    .C("R_restore_sigcld_handler")
+    invisible(NULL)
+  }


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