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This change will be integrated but ignored (-ay) to the gg-epcore/union sources, so that they retain HopeNames. Copied from Perforce Change: 24911 ServerID: perforce.ravenbrook.com
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/* impl.h.sac: SEGREGATED ALLOCATION CACHES INTERFACE
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*
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* $Id$
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* Copyright (c) 2001 Ravenbrook Limited.
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*/
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#ifndef sac_h
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#define sac_h
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#include "mpmtypes.h"
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#include "mpm.h" /* for PoolArena */
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#define sacClassLIMIT ((Count)8)
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/* ExternalSAC -- the external face of segregated allocation caches */
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/* .sac: This structure must match impl.h.mps.sac. */
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typedef struct ExternalSACStruct *ExternalSAC;
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typedef struct SACFreeListBlockStruct {
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Size size;
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Count count;
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Count countMax;
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Addr blocks;
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} SACFreeListBlockStruct;
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typedef SACFreeListBlockStruct *SACFreeListBlock;
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typedef struct ExternalSACStruct {
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size_t middle; /* block size for starting searches */
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Bool trapped; /* trap status */
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/* freelist, variable length */
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SACFreeListBlockStruct freelists[2 * sacClassLIMIT];
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} ExternalSACStruct;
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/* SAC -- the real segregated allocation caches */
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#define SACSig ((Sig)0x5195AC99) /* SIGnature SAC */
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typedef struct SACStruct *SAC;
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typedef struct SACStruct {
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Sig sig;
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Pool pool;
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Count classesCount; /* number of classes */
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Index middleIndex; /* index of the middle */
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ExternalSACStruct esacStruct; /* variable length, must be last */
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} SACStruct;
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#define SACOfExternalSAC(esac) PARENT(SACStruct, esacStruct, esac)
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#define ExternalSACOfSAC(sac) (&((sac)->esacStruct))
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#define SACArena(sac) PoolArena((sac)->pool)
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/* SACClasses -- structure for specifying classes in the cache */
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/* .sacc: This structure must match impl.h.mps.sacc. */
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typedef struct SACClassesStruct *SACClasses;
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typedef struct SACClassesStruct {
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Size blockSize;
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Count cachedCount;
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unsigned frequency;
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} SACClassesStruct;
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extern Res SACCreate(SAC *sac_o, Pool pool, Count classesCount,
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SACClasses classes);
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extern void SACDestroy(SAC sac);
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extern Res SACFill(Addr *p_o, SAC sac, Size size, Bool hasReservoirPermit);
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extern void SACEmpty(SAC sac, Addr p, Size size);
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extern void SACFlush(SAC sac);
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#endif /* sac_h */
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