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shm: Explain some fields

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Explain what some of the fields in the allocator actually mean
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Youness Alaoui 2010-10-20 21:33:24 +02:00 committed by Olivier Crête
parent 0de362f248
commit a7b27bc2d0
1 changed files with 8 additions and 0 deletions
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8
sys/shm/shmalloc.c
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@ -33,22 +33,30 @@
#include <string.h>
#include <assert.h>
/* This is the allocated space to hold multiple blocks */
struct _ShmAllocSpace
{
/* The total size of this space */
size_t size;
/* chained list of the blocks contained in this space */
ShmAllocBlock *blocks;
};
/* A single block of data */
struct _ShmAllocBlock
{
int use_count;
/* Pointer back to the AllocSpace where this block is */
ShmAllocSpace *space;
/* The offset of this block in the alloc space */
unsigned long offset;
/* The size of the block */
unsigned long size;
/* Pointer to the next block in the chain */
ShmAllocBlock *next;
};