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7f918cf1 CE |
1 | (* scheduler-hooks.sig\r |
2 | * 2004 Matthew Fluet (mfluet@acm.org)\r | |
3 | * Ported to MLton threads.\r | |
4 | *)\r | |
5 | \r | |
6 | (* scheduler.sml\r | |
7 | *\r | |
8 | * COPYRIGHT (c) 1995 AT&T Bell Laboratories.\r | |
9 | * COPYRIGHT (c) 1989-1991 John H. Reppy\r | |
10 | *)\r | |
11 | \r | |
12 | signature SCHEDULER_HOOKS =\r | |
13 | sig\r | |
14 | type 'a thread = 'a RepTypes.thread\r | |
15 | type rdy_thread = RepTypes.rdy_thread\r | |
16 | \r | |
17 | (* this hook gets invoked when the scheduler has nothing else to do;\r | |
18 | * it is invoked in an atomic region\r | |
19 | *)\r | |
20 | val pauseHook : (unit -> rdy_thread) ref\r | |
21 | \r | |
22 | (* this hook points to a thread that gets invoked when\r | |
23 | * the system is otherwise deadlocked. It takes two arguments:\r | |
24 | * the first is a boolean flag that says weather to do clean-up,\r | |
25 | * and the second is the exit status.\r | |
26 | *)\r | |
27 | val shutdownHook : (bool * OS.Process.status) thread ref\r | |
28 | \r | |
29 | val reset : unit -> unit\r | |
30 | end\r |