trawick 02/03/20 13:47:55
Modified: threadproc/unix signals.c
Log:
add a comment distinguishing between SIGUSR2 and the synchronous
signals which we absolutely must avoid blocking
Revision Changes Path
1.42 +8 -0 apr/threadproc/unix/signals.c
Index: signals.c
===================================================================
RCS file: /home/cvs/apr/threadproc/unix/signals.c,v
retrieving revision 1.41
retrieving revision 1.42
diff -u -r1.41 -r1.42
--- signals.c 20 Mar 2002 21:19:55 -0000 1.41
+++ signals.c 20 Mar 2002 21:47:55 -0000 1.42
@@ -301,6 +301,14 @@
#ifdef SIGTRAP
sigdelset(sig_mask, SIGTRAP);
#endif
+
+/* the rest of the signals removed from the mask in this function
+ * absolutely must be removed; you cannot block synchronous signals
+ * (requirement of pthreads API)
+ *
+ * SIGUSR2 is being removed from the mask for the convenience of
+ * Purify users (Solaris, HP-UX, SGI) since Purify uses SIGUSR2
+ */
#ifdef SIGUSR2
sigdelset(sig_mask, SIGUSR2);
#endif
