diff options
Diffstat (limited to 'src/include/utils/memutils.h')
| -rw-r--r-- | src/include/utils/memutils.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/include/utils/memutils.h b/src/include/utils/memutils.h index 009d086311c..e95aec57c90 100644 --- a/src/include/utils/memutils.h +++ b/src/include/utils/memutils.h @@ -15,7 +15,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: memutils.h,v 1.23 1999/03/25 19:05:19 tgl Exp $ + * $Id: memutils.h,v 1.24 1999/05/22 23:19:36 tgl Exp $ * * NOTES * some of the information in this file will be moved to @@ -96,7 +96,7 @@ extern void OrderedElemPushInto(OrderedElem elem, OrderedSet Set); * an allocation is requested for a set, memory is allocated and a * pointer is returned. Subsequently, this memory may be freed or * reallocated. In addition, an allocation set may be reset which - * will cause all allocated memory to be freed. + * will cause all memory allocated within it to be freed. * * Allocations may occur in four different modes. The mode of * allocation does not affect the behavior of allocations except in @@ -109,7 +109,7 @@ extern void OrderedElemPushInto(OrderedElem elem, OrderedSet Set); * and freed very frequently. This is a good choice when allocation * characteristics are unknown. This is the default mode. * - * "Static" mode attemts to allocate space as efficiently as possible + * "Static" mode attempts to allocate space as efficiently as possible * without regard to freeing memory. This mode should be chosen only * when it is known that many allocations will occur but that very * little of the allocated memory will be explicitly freed. @@ -129,7 +129,7 @@ extern void OrderedElemPushInto(OrderedElem elem, OrderedSet Set); * Allocation sets are not automatically reset on a system reset. * Higher level code is responsible for cleaning up. * - * There may other modes in the future. + * There may be other modes in the future. */ /* @@ -176,7 +176,9 @@ typedef AllocBlockData *AllocBlock; * The prefix of each piece of memory in an AllocBlock */ typedef struct AllocChunkData { + /* aset is the owning aset if allocated, or the freelist link if free */ void *aset; + /* size is always the chunk size */ Size size; } AllocChunkData; @@ -189,7 +191,8 @@ typedef AllocChunkData *AllocChunk; typedef struct AllocSetData { struct AllocBlockData *blocks; - struct AllocChunkData *freelist[8]; +#define ALLOCSET_NUM_FREELISTS 8 + struct AllocChunkData *freelist[ALLOCSET_NUM_FREELISTS]; /* Note: this will change in the future to support other modes */ } AllocSetData; |