Reorganisation of the source tree

[ghc-hetmet.git] / ghc / rts / Timer.c

diff --git a/ghc/rts/Timer.c b/ghc/rts/Timer.c
deleted file mode 100644 (file)
index 0bfea2d..0000000
--- a/ghc/rts/Timer.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/* -----------------------------------------------------------------------------
- *
- * (c) The GHC Team, 1995-2005
- *
- * Interval timer service for profiling and pre-emptive scheduling.
- *
- * ---------------------------------------------------------------------------*/
-
-/*
- * The interval timer is used for profiling and for context switching in the
- * threaded build. 
- *
- * This file defines the platform-independent view of interval timing, relying
- * on platform-specific services to install and run the timers.
- *
- */
-#include "Rts.h"
-#include "RtsFlags.h"
-#include "Proftimer.h"
-#include "Schedule.h"
-#include "Timer.h"
-#include "Ticker.h"
-#include "Capability.h"
-
-/* ticks left before next pre-emptive context switch */
-static int ticks_to_ctxt_switch = 0;
-
-#if defined(THREADED_RTS)
-/* idle ticks left before we perform a GC */
-static int ticks_to_gc = 0;
-#endif
-
-/*
- * Function: handle_tick()
- *
- * At each occurrence of a tick, the OS timer will invoke
- * handle_tick().
- */
-static
-void
-handle_tick(int unused STG_UNUSED)
-{
-#ifdef PROFILING
-  handleProfTick();
-#endif
-  if (RtsFlags.ConcFlags.ctxtSwitchTicks > 0) {
-      ticks_to_ctxt_switch--;
-      if (ticks_to_ctxt_switch <= 0) {
-         ticks_to_ctxt_switch = RtsFlags.ConcFlags.ctxtSwitchTicks;
-         context_switch = 1;   /* schedule a context switch */
-      }
-  }
-
-#if defined(THREADED_RTS)
-  /* 
-   * If we've been inactive for idleGCDelayTicks (set by +RTS
-   * -I), tell the scheduler to wake up and do a GC, to check
-   * for threads that are deadlocked.
-   */
-  switch (recent_activity) {
-  case ACTIVITY_YES:
-      recent_activity = ACTIVITY_MAYBE_NO;
-      ticks_to_gc = RtsFlags.GcFlags.idleGCDelayTicks;
-      break;
-  case ACTIVITY_MAYBE_NO:
-      if (ticks_to_gc == 0) break; /* 0 ==> no idle GC */
-      ticks_to_gc--;
-      if (ticks_to_gc == 0) {
-         ticks_to_gc = RtsFlags.GcFlags.idleGCDelayTicks;
-         recent_activity = ACTIVITY_INACTIVE;
-         blackholes_need_checking = rtsTrue;
-         /* hack: re-use the blackholes_need_checking flag */
-         
-         /* ToDo: this doesn't work.  Can't invoke
-          * pthread_cond_signal from a signal handler.
-          * Furthermore, we can't prod a capability that we
-          * might be holding.  What can we do?
-          */
-         prodOneCapability();
-      }
-      break;
-  default:
-      break;
-  }
-#endif
-}
-
-int
-startTimer(nat ms)
-{
-#ifdef PROFILING
-  initProfTimer();
-#endif
-
-  return startTicker(ms, handle_tick);
-}
-
-int
-stopTimer()
-{
-  return stopTicker();
-}