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/* ----------------------------------------------------------------------------
*
* (c) The GHC Team 1998-2006
*
* Generational garbage collector: utilities
*
* Documentation on the architecture of the Garbage Collector can be
* found in the online commentary:
*
* http://hackage.haskell.org/trac/ghc/wiki/Commentary/Rts/Storage/GC
*
* --------------------------------------------------------------------------*/
#include "SMP.h"
#ifdef THREADED_RTS
extern SpinLock gc_alloc_block_sync;
#endif
bdescr *allocBlock_sync(void);
void push_scan_block (bdescr *bd, step_workspace *ws);
bdescr *grab_todo_block (step_workspace *ws);
bdescr *gc_alloc_todo_block (step_workspace *ws);
bdescr *gc_alloc_scavd_block (step_workspace *ws);
// Returns true if a block is 3/4 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);
}
#if DEBUG
void printMutableList (generation *gen);
#endif
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