Changeset dc0898 in git for Singular/cntrlc.cc

Timestamp:

Aug 2, 2000, 3:40:33 PM (23 years ago)

Author:

Olaf Bachmann <obachman@…>

Branches:

(u'spielwiese', '8e0ad00ce244dfd0756200662572aef8402f13d5')

Children:

ff4e84752079c82f72d2cff28527ed1b217ac9be

Parents:

e03066780716d0feba708e2349c879d0957c6ff2

Message:

* solved system problem under HPUX


git-svn-id: file:///usr/local/Singular/svn/trunk@4502 2c84dea3-7e68-4137-9b89-c4e89433aadc

File:

• Singular/cntrlc.cc (modified) (3 diffs)

Singular/cntrlc.cc

@@ -2 +2 @@
 *  Computer Algebra System SINGULAR     *
 ****************************************/
-/* $Id: cntrlc.cc,v 1.30 2000-05-18 08:31:10 Singular Exp $ */
+/* $Id: cntrlc.cc,v 1.31 2000-08-02 13:40:28 obachman Exp $ */
 /*
 * ABSTRACT - interupt handling
@@ -23 +23 @@
 #include "page.h"
 #endif
+
 
 /* undef, if you don't want GDB to come up on error */
@@ -627 +628 @@
 #endif
 #endif
+
+/* Under HPUX 9, system(...) returns -1 if SIGCHLD does not equal
+   SIG_DFL. However, if it stays at SIG_DFL we get zombie processes
+   for terminated childs generated by fork. Therefors some special treatment 
+   is necessary */
+#ifdef HPUX_9
+#undef system
+extern "C" {
+  int  hpux9_system(const char* call)
+  {
+    int ret;
+    signal(SIGCHLD, (void (*)(int))SIG_DFL);
+    ret = system(call);
+    signal(SIGCHLD, (void (*)(int))SIG_IGN);
+    return ret;
+  }
+}
+#endif /* HPUX_9 */