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- reverted .last_access handling to use the static counter. Old behaviour - counting up .last_access directly - lead to a heavy performance impact.

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This commit is contained in:
Michael Wiedenbauer 2009-06-09 11:39:57 +00:00
parent 5324215493
commit 980ade67d4
1 changed files with 4 additions and 4 deletions
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8
source/cache.c
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@ -101,14 +101,14 @@ void _FAT_cache_destructor (CACHE* cache) {
_FAT_mem_free (cache);
}
/*
static u32 accessCounter = 0;
static u32 accessTime(){
accessCounter++;
return accessCounter;
}
*/
static CACHE_ENTRY* _FAT_cache_getPage(CACHE *cache,sec_t sector)
{
@ -123,7 +123,7 @@ static CACHE_ENTRY* _FAT_cache_getPage(CACHE *cache,sec_t sector)
for(i=0;i<numberOfPages;i++) {
if(sector>=cacheEntries[i].sector && sector<(cacheEntries[i].sector + cacheEntries[i].count)) {
cacheEntries[i].last_access++;
cacheEntries[i].last_access = accessTime();
return &(cacheEntries[i]);
}
@ -144,7 +144,7 @@ static CACHE_ENTRY* _FAT_cache_getPage(CACHE *cache,sec_t sector)
cacheEntries[oldUsed].sector = sector;
cacheEntries[oldUsed].count = sectorsPerPage;
cacheEntries[oldUsed].last_access++;
cacheEntries[oldUsed].last_access = accessTime();
return &(cacheEntries[oldUsed]);
}