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#include <dolphin/os.h>
#include <charPipeline/fileCache.h>
DSCache DODisplayCache;
u8 DOCacheInitialized;
static u8 AllocCacheNode(DSCacheNodePtr* cacheNode, char* name);
static void FreeCacheNode(DSCacheNodePtr* cacheNode);
DSCacheNodePtr DSAddCacheNode(DSCachePtr cache, char* name, Ptr data, Ptr OSFreeFunc) {
DSCacheNodePtr cacheNode;
cacheNode = NULL;
if (!AllocCacheNode(&cacheNode, name)) {
return NULL;
}
Strcpy(cacheNode->Name, name);
cacheNode->Data = data;
cacheNode->Free = (void (*)(Ptr *))OSFreeFunc;
cacheNode->ReferenceCount = 0;
DSInsertListObject(&cache->CacheNodeList, NULL, (Ptr)cacheNode);
return cacheNode;
}
static u8 AllocCacheNode(DSCacheNodePtr* cacheNode, char* name) {
if (*cacheNode) {
FreeCacheNode(cacheNode);
}
*cacheNode = OSAlloc(sizeof(DSCacheNode));
if (!*cacheNode) {
return FALSE;
}
(*cacheNode)->Name = OSAlloc(Strlen(name) + 1);
if (!(*cacheNode)->Name) {
return FALSE;
}
return TRUE;
}
void DSEmptyCache(DSCachePtr cache) {
DSCacheNodePtr cursor;
DSCacheNodePtr cacheNode;
cursor = (DSCacheNodePtr)cache->CacheNodeList.Head;
while (cursor) {
cacheNode = cursor;
cursor = (DSCacheNodePtr)cursor->Link.Next;
DSRemoveListObject(&cache->CacheNodeList, (Ptr)cacheNode);
FreeCacheNode(&cacheNode);
}
}
static DSCacheNodePtr FindCacheNode(DSCachePtr cache, char* name, Ptr data) {
DSCacheNodePtr cacheNode;
cacheNode = (DSCacheNodePtr)cache->CacheNodeList.Head;
if (data) {
while (cacheNode) {
if (data == cacheNode->Data) {
return cacheNode;
}
cacheNode = (DSCacheNodePtr)cacheNode->Link.Next;
}
} else if (name) {
while (cacheNode) {
if (Strcmp(name, cacheNode->Name) == 0) {
return cacheNode;
}
cacheNode = (DSCacheNodePtr)cacheNode->Link.Next;
}
}
return NULL;
}
Ptr DSGetCacheObj(DSCachePtr cache, char* name) {
DSCacheNodePtr cacheNode;
cacheNode = FindCacheNode(cache, name, NULL);
if (cacheNode) {
cacheNode->ReferenceCount++;
return cacheNode->Data;
}
return NULL;
}
static void FreeCacheNode(DSCacheNodePtr* cacheNode) {
if (*cacheNode) {
if ((*cacheNode)->Free) {
(*cacheNode)->Free(&(*cacheNode)->Data);
}
OSFree((*cacheNode)->Name);
OSFree(*cacheNode);
*cacheNode = NULL;
}
}
void DSInitCache(DSCachePtr cache) {
DSCacheNode cacheNode;
cache->PurgeFlag = DS_AUTO_PURGE;
DSInitList(&cache->CacheNodeList, (Ptr)&cacheNode, &cacheNode.Link);
}
void DSPurgeCache(DSCachePtr cache) {
DSCacheNodePtr cursor;
DSCacheNodePtr cacheNode;
cursor = (DSCacheNodePtr)cache->CacheNodeList.Head;
while (cursor) {
cacheNode = cursor;
cursor = (DSCacheNodePtr)cursor->Link.Next;
if (cacheNode->ReferenceCount == 0) {
DSRemoveListObject(&cache->CacheNodeList, (Ptr)cacheNode);
FreeCacheNode(&cacheNode);
}
}
}
void DSReleaseCacheObj(DSCachePtr cache, Ptr data) {
DSCacheNodePtr cacheNode;
cacheNode = FindCacheNode(cache, NULL, data);
if (cacheNode) {
if (cacheNode->ReferenceCount != 0) {
cacheNode->ReferenceCount--;
}
if (cacheNode->ReferenceCount == 0 && cache->PurgeFlag == DS_AUTO_PURGE) {
DSRemoveListObject(&cache->CacheNodeList, (Ptr)cacheNode);
FreeCacheNode(&cacheNode);
}
}
}
void DSSetCachePurgeFlag(DSCachePtr cache, u8 purgeFlag) {
cache->PurgeFlag = purgeFlag;
}
void CSHInitDisplayCache(void) {
DSInitCache(&DODisplayCache);
DOCacheInitialized = TRUE;
}
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