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Fix file caching

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svn-id: r24273
This commit is contained in:
Won Star 2006-10-11 13:53:30 +00:00
parent 2a876e11b5
commit b0753738a3
1 changed files with 7 additions and 11 deletions
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18
backends/platform/gp32/gp32std_file.cpp
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@ -45,13 +45,11 @@ FILE *gp_stdin = NULL;
// CACHE
inline bool gp_cacheInPos(GPFILE *stream)
{
inline bool gp_cacheInPos(GPFILE *stream) {
return (stream->cachePos <= stream->filePos && stream->filePos < stream->cachePos + stream->bytesInCache);
}
int gp_cacheMiss(GPFILE *stream)
{
int gp_cacheMiss(GPFILE *stream) {
unsigned long readcount = 0;
int copyLen = stream->fileSize - stream->filePos;
@ -70,6 +68,9 @@ int gp_cacheMiss(GPFILE *stream)
}
int gp_flushWriteCache(GPFILE *stream) {
if (stream->bytesInCache == 0)
return 0;
ERR_CODE err = GpFileWrite(stream->handle, stream->cacheData, stream->bytesInCache); // flush cache
stream->filePos += stream->bytesInCache;
@ -82,7 +83,6 @@ int gp_flushWriteCache(GPFILE *stream) {
///////////////////////////////////////////////////////////////
GPFILE *gp_fopen(const char *fileName, const char *openMode) {
//FIXME: allocation, mode
uint32 mode;
GPFILE *file;
ERR_CODE err;
@ -184,8 +184,7 @@ int gp_fseek(GPFILE *stream, long offset, int whence) {
err = GpFileSeek(stream->handle, whence, offset, (long *)&stream->physFilePos);
stream->filePos = stream->physFilePos;
if (gp_cacheInPos(stream)) {
} else { // cache miss
if (!gp_cacheInPos(stream)) { // cache miss
gp_cacheMiss(stream);
}
}
@ -249,10 +248,7 @@ size_t gp_fwrite(const void *ptr, size_t size, size_t n, GPFILE *stream) {
len -= copyLen;
if (stream->bytesInCache == FCACHE_SIZE) {
ERR_CODE err = GpFileWrite(stream->handle, stream->cacheData, stream->bytesInCache); // flush cache
stream->filePos += stream->bytesInCache;
stream->physFilePos += stream->bytesInCache;
stream->bytesInCache = 0;
gp_flushWriteCache(stream);
}
}
#else