X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fsm%2FGCThread.h;h=1d0a05ce447285f9c12ec3e5bd17ae8c8ffa82ef;hb=e50364a5a8e5d736445cd8e5b10a813ec0a5a2e0;hp=d4376f77a7b27f27b372b0ad0af2ac9bc94a345b;hpb=bb0fe6ce59a2adb62e4bb2f66f5be0213cb0e55f;p=ghc-hetmet.git

diff --git a/rts/sm/GCThread.h b/rts/sm/GCThread.h
index d4376f7..1d0a05c 100644
--- a/rts/sm/GCThread.h
+++ b/rts/sm/GCThread.h
@@ -113,10 +113,9 @@ typedef struct step_workspace_ {
 typedef struct gc_thread_ {
 #ifdef THREADED_RTS
     OSThreadId id;                 // The OS thread that this struct belongs to
-    Mutex      wake_mutex;
-    Condition  wake_cond;          // So we can go to sleep between GCs
-    rtsBool    wakeup;
-    rtsBool    exit;
+    SpinLock   gc_spin;
+    SpinLock   mut_spin;
+    volatile rtsBool wakeup;
 #endif
     nat thread_index;              // a zero based index identifying the thread
 
@@ -196,7 +195,16 @@ extern gc_thread **gc_threads;
 
 #define GLOBAL_REG_DECL(type,name,reg) register type name REG(reg);
 
-#if defined(REG_Base)
+#if defined(sparc_HOST_ARCH)
+// Don't use REG_base or R1 for gct on SPARC because they're getting clobbered 
+//	by something else. Not sure what yet. -- BL 2009/01/03
+
+extern __thread gc_thread* gct;
+#define DECLARE_GCT __thread gc_thread* gct;
+
+#elif defined(REG_Base) && !defined(i386_HOST_ARCH)
+// on i386, REG_Base is %ebx which is also used for PIC, so we don't
+// want to steal it
 
 GLOBAL_REG_DECL(gc_thread*, gct, REG_Base)
 #define DECLARE_GCT /* nothing */