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 +1,31 @@
+/* ISC license. */
+
+/* MT-unsafe */
+
+#include "sysdeps.h"
+#include "allreadwrite.h"
+#include "selfpipe-internal.h"
+#include "selfpipe.h"
+
+#ifdef HASSIGNALFD
+
+#include <sys/signalfd.h>
+
+int selfpipe_read (void)
+{
+  struct signalfd_siginfo buf ;
+  register int r = sanitize_read(fd_read(selfpipe_fd, (char *)&buf, sizeof(struct signalfd_siginfo))) ;
+  return (r <= 0) ? r : (int)buf.ssi_signo ;
+}
+      
+#else
+
+int selfpipe_read (void)
+{
+  char c ;
+  register int r = sanitize_read((fd_read(selfpipe_fd, &c, 1))) ;
+  return (r <= 0) ? r : (int)c ;
+}
+
+#endif
+