1 files changed, 54 insertions, 0 deletions
diff --git a/src/include/utils/timeout.h b/src/include/utils/timeout.h
new file mode 100644
index 00000000000..76a7e1a63e4
--- /dev/null
+++ b/src/include/utils/timeout.h
@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * timeout.h
+ *	  Routines to multiplex SIGALRM interrupts for multiple timeout reasons.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/timeout.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef TIMEOUT_H
+#define TIMEOUT_H
+
+#include "datatype/timestamp.h"
+
+/*
+ * Identifiers for timeout reasons.  Note that in case multiple timeouts
+ * trigger at the same time, they are serviced in the order of this enum.
+ */
+typedef enum TimeoutId
+{
+	/* Predefined timeout reasons */
+	STARTUP_PACKET_TIMEOUT,
+	DEADLOCK_TIMEOUT,
+	STATEMENT_TIMEOUT,
+	STANDBY_DEADLOCK_TIMEOUT,
+	STANDBY_TIMEOUT,
+	/* First user-definable timeout reason */
+	USER_TIMEOUT,
+	/* Maximum number of timeout reasons */
+	MAX_TIMEOUTS = 16
+} TimeoutId;
+
+/* callback function signature */
+typedef void (*timeout_handler) (void);
+
+/* timeout setup */
+extern void InitializeTimeouts(void);
+extern TimeoutId RegisterTimeout(TimeoutId id, timeout_handler handler);
+
+/* timeout operation */
+extern void enable_timeout_after(TimeoutId id, int delay_ms);
+extern void enable_timeout_at(TimeoutId id, TimestampTz fin_time);
+extern void disable_timeout(TimeoutId id, bool keep_indicator);
+extern void disable_all_timeouts(bool keep_indicators);
+
+/* accessors */
+extern bool get_timeout_indicator(TimeoutId id);
+extern TimestampTz get_timeout_start_time(TimeoutId id);
+
+#endif   /* TIMEOUT_H */