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[project @ 2003-06-25 08:20:20 by simonpj]
[ghc-hetmet.git]
/
ghc
/
rts
/
Capability.h
diff --git
a/ghc/rts/Capability.h
b/ghc/rts/Capability.h
index
71359b6
..
dd6a7be
100644
(file)
--- a/
ghc/rts/Capability.h
+++ b/
ghc/rts/Capability.h
@@
-32,15
+32,22
@@
extern void initCapabilities(void);
extern void grabCapability(Capability** pCap);
extern void releaseCapability(Capability* cap);
extern void grabCapability(Capability** pCap);
extern void releaseCapability(Capability* cap);
-#if defined(RTS_SUPPORTS_THREADS)
-/* total number of available capabilities */
extern nat rts_n_free_capabilities;
extern nat rts_n_free_capabilities;
+#if defined(RTS_SUPPORTS_THREADS)
+/* number of worker threads waiting for a return capability
+ */
extern nat rts_n_waiting_workers;
extern void grabReturnCapability(Mutex* pMutex, Capability** pCap);
extern nat rts_n_waiting_workers;
extern void grabReturnCapability(Mutex* pMutex, Capability** pCap);
-extern void yieldToReturningWorker(Mutex* pMutex, Capability* cap);
+extern void yieldToReturningWorker(Mutex* pMutex, Capability** pCap);
extern void waitForWorkCapability(Mutex* pMutex, Capability** pCap, rtsBool runnable);
extern void waitForWorkCapability(Mutex* pMutex, Capability** pCap, rtsBool runnable);
+
+static inline rtsBool needToYieldToReturningWorker(void)
+{
+ return rts_n_waiting_workers > 0;
+}
+
static inline nat getFreeCapabilities (void)
{
return rts_n_free_capabilities;
static inline nat getFreeCapabilities (void)
{
return rts_n_free_capabilities;