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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team 1998-2014
*
* GC support for immutable non-GCed structures
*
* Documentation on the architecture of the Garbage Collector can be
* found in the online commentary:
*
* http://ghc.haskell.org/trac/ghc/wiki/Commentary/Rts/Storage/GC
*
* ---------------------------------------------------------------------------*/
#pragma once
#include "BeginPrivate.h"
void initCompact (void);
void exitCompact (void);
StgCompactNFData *compactNew (Capability *cap,
StgWord size);
void compactResize(Capability *cap,
StgCompactNFData *str,
StgWord new_size);
void compactFree (StgCompactNFData *str);
void compactMarkKnown(StgCompactNFData *str);
StgWord compactContains(StgCompactNFData *str,
StgPtr what);
StgWord countCompactBlocks(bdescr *outer);
#if defined(DEBUG)
StgWord countAllocdCompactBlocks(bdescr *outer);
#endif
StgCompactNFDataBlock *compactAllocateBlock(Capability *cap,
StgWord size,
StgCompactNFDataBlock *previous);
StgPtr compactFixupPointers(StgCompactNFData *str,
StgClosure *root);
// Go from an arbitrary pointer into any block of a compact chain, to the
// StgCompactNFDataBlock at the beginning of the block.
INLINE_HEADER StgCompactNFDataBlock *objectGetCompactBlock (StgClosure *closure);
INLINE_HEADER StgCompactNFDataBlock *objectGetCompactBlock (StgClosure *closure)
{
bdescr *object_block, *head_block;
object_block = Bdescr((StgPtr)closure);
ASSERT((object_block->flags & BF_COMPACT) != 0);
if (object_block->blocks == 0)
head_block = object_block->link;
else
head_block = object_block;
ASSERT((head_block->flags & BF_COMPACT) != 0);
return (StgCompactNFDataBlock*)(head_block->start);
}
// Go from an arbitrary pointer into any block of a compact chain, to the
// StgCompactNFData for the whole compact chain.
INLINE_HEADER StgCompactNFData *objectGetCompact (StgClosure *closure);
INLINE_HEADER StgCompactNFData *objectGetCompact (StgClosure *closure)
{
StgCompactNFDataBlock *block = objectGetCompactBlock (closure);
return block->owner;
}
extern void *allocateForCompact (Capability *cap,
StgCompactNFData *str,
StgWord sizeW);
extern void insertCompactHash (Capability *cap,
StgCompactNFData *str,
StgClosure *p, StgClosure *to);
extern void verifyCompact (StgCompactNFData *str);
#include "EndPrivate.h"
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