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From: "George V. Neville-Neil" <gnn@FreeBSD.org>
Date: Fri, 13 Apr 2012 20:22:08 +0000 (UTC)
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Cc: 
Subject: svn commit: r234234 -
	head/cddl/contrib/opensolaris/lib/libdtrace/common
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Author: gnn
Date: Fri Apr 13 20:22:08 2012
New Revision: 234234
URL: http://svn.freebsd.org/changeset/base/234234

Log:
  Change SIGUSR1 to SIGTHR to properly wake up a process that is being
  traced.  The use of SIGUSR1 caused traced processes (those attached to
  with dtrace -p) to exit when dtrace exited.
  
  MFC in: 1 week

Modified:
  head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c

Modified: head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
==============================================================================
--- head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c	Fri Apr 13 18:21:56 2012	(r234233)
+++ head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c	Fri Apr 13 20:22:08 2012	(r234234)
@@ -811,7 +811,7 @@ dt_proc_destroy(dtrace_hdl_t *dtp, struc
 #if defined(sun)
 		(void) _lwp_kill(dpr->dpr_tid, SIGCANCEL);
 #else
-		pthread_kill(dpr->dpr_tid, SIGUSR1);
+		pthread_kill(dpr->dpr_tid, SIGTHR);
 #endif
 
 		/*