/* ----------------------------------------------------------------------------
*
- * (c) The GHC Team 1998-2006
+ * (c) The GHC Team 1998-2008
*
* Generational garbage collector: utilities
*
*
* --------------------------------------------------------------------------*/
-#include "SMP.h"
+#ifndef SM_GCUTILS_H
+#define SM_GCUTILS_H
-#ifdef THREADED_RTS
-extern SpinLock gc_alloc_block_sync;
-#endif
+#pragma GCC visibility push(hidden)
bdescr *allocBlock_sync(void);
void freeChain_sync(bdescr *bd);
-void push_scan_block (bdescr *bd, step_workspace *ws);
-bdescr *grab_todo_block (step_workspace *ws);
-StgPtr gc_alloc_todo_block (step_workspace *ws);
-bdescr *gc_alloc_scavd_block (step_workspace *ws);
+void push_scanned_block (bdescr *bd, step_workspace *ws);
+StgPtr todo_block_full (nat size, step_workspace *ws);
+StgPtr alloc_todo_block (step_workspace *ws, nat size);
+
+bdescr *grab_local_todo_block (step_workspace *ws);
+#if defined(THREADED_RTS)
+bdescr *steal_todo_block (nat s);
+#endif
-// Returns true if a block is 3/4 full. This predicate is used to try
+// Returns true if a block is partially full. This predicate is used to try
// to re-use partial blocks wherever possible, and to reduce wastage.
// We might need to tweak the actual value.
INLINE_HEADER rtsBool
isPartiallyFull(bdescr *bd)
{
- return (bd->free + BLOCK_SIZE_W/4 < bd->start + BLOCK_SIZE_W);
+ return (bd->free + WORK_UNIT_WORDS < bd->start + BLOCK_SIZE_W);
}
#if DEBUG
void printMutableList (generation *gen);
#endif
+
+// Version of recordMutableGen for use during GC. This uses the
+// mutable lists attached to the current gc_thread structure, which
+// are the same as the mutable lists on the Capability.
+INLINE_HEADER void
+recordMutableGen_GC (StgClosure *p, nat gen_no)
+{
+ bdescr *bd;
+
+ bd = gct->mut_lists[gen_no];
+ if (bd->free >= bd->start + BLOCK_SIZE_W) {
+ bdescr *new_bd;
+ new_bd = allocBlock_sync();
+ new_bd->link = bd;
+ bd = new_bd;
+ gct->mut_lists[gen_no] = bd;
+ }
+ *bd->free++ = (StgWord)p;
+}
+
+#pragma GCC visibility pop
+
+#endif /* SM_GCUTILS_H */