Import selfpipe code from skalibs 1.2.5

[andersk@mit.edu: Move code to new third/libstddjb directory]
2012-02-26 15:58:37 -05:00
parent 9a3ab83783
commit 77f3a9073f
24 changed files with 697 additions and 0 deletions
@@ -0,0 +1,35 @@
+/* ISC license. */
+
+/* MT-unsafe */
+
+#include <signal.h>
+#include "sysdeps.h"
+#include "djbunix.h"
+#include "selfpipe-internal.h"
+#include "selfpipe.h"
+
+#ifdef HASSIGNALFD
+
+void selfpipe_finish (void)
+{
+  sigprocmask(SIG_UNBLOCK, &selfpipe_caught, 0) ;
+  sigemptyset(&selfpipe_caught) ;
+  fd_close(selfpipe_fd) ;
+  selfpipe_fd = -1 ;
+}
+
+#else
+
+#include "sig.h"
+#include "nsig.h"
+
+void selfpipe_finish (void)
+{
+  sig_restoreto(&selfpipe_caught, NSIG) ;
+  sigemptyset(&selfpipe_caught) ;
+  fd_close(selfpipe[1]) ;
+  fd_close(selfpipe[0]) ;
+  selfpipe[0] = selfpipe[1] = -1 ;
+}
+
+#endif