return size;
}
-static int kblockfile_writeBlock(struct KBlock *b, block_idx_t index, const void *buf)
+static size_t kblockfile_writeDirect(struct KBlock *b, block_idx_t index, const void *buf, size_t offset, size_t size)
{
KBlockFile *f = KBLOCKFILE_CAST(b);
ASSERT(buf);
ASSERT(index < b->blk_cnt);
- fseek(f->fp, index * b->blk_size, SEEK_SET);
- return (fwrite(f->b.priv.buf, 1, b->blk_size, f->fp) == b->blk_size) ? 0 : EOF;
-}
-
-static int kblockfile_readBlock(struct KBlock *b, block_idx_t index, void *buf)
-{
- KBlockFile *f = KBLOCKFILE_CAST(b);
- ASSERT(buf);
- ASSERT(index < b->blk_cnt);
- fseek(f->fp, index * b->blk_size, SEEK_SET);
- return (fread(f->b.priv.buf, 1, b->blk_size, f->fp) == b->blk_size) ? 0 : EOF;
+ fseek(f->fp, index * b->blk_size + offset, SEEK_SET);
+ return fwrite(buf, 1, size, f->fp);
}
static int kblockfile_error(struct KBlock *b)
static const KBlockVTable kblockfile_hwbuffered_vt =
{
.readDirect = kblockfile_readDirect,
+
.readBuf = kblockfile_readBuf,
.writeBuf = kblockfile_writeBuf,
.load = kblockfile_load,
.store = kblockfile_store,
-
- .readBlock = kblock_swReadBlock,
- .writeBlock = kblock_swWriteBlock,
.error = kblockfile_error,
.clearerr = kblockfile_claererr,
static const KBlockVTable kblockfile_swbuffered_vt =
{
- .readDirect = kblock_swReadDirect,
+ .readDirect = kblockfile_readDirect,
+ .writeDirect =kblockfile_writeDirect,
+
.readBuf = kblock_swReadBuf,
.writeBuf = kblock_swWriteBuf,
.load = kblock_swLoad,
.store = kblock_swStore,
-
- .readBlock = kblockfile_readBlock,
- .writeBlock =kblockfile_writeBlock,
.error = kblockfile_error,
.clearerr = kblockfile_claererr,
static const KBlockVTable kblockfile_unbuffered_vt =
{
- .readBlock = kblockfile_readBlock,
- .writeBlock =kblockfile_writeBlock,
+ .readDirect = kblockfile_readDirect,
+ .writeDirect =kblockfile_writeDirect,
.error = kblockfile_error,
.clearerr = kblockfile_claererr,
f->fp = fp;
f->b.blk_size = block_size;
f->b.blk_cnt = block_count;
-
+
+ f->b.priv.flags |= KB_PARTIAL_WRITE;
if (buf)
{
f->b.priv.flags |= KB_BUFFERED;
f->b.priv.vt = &kblockfile_swbuffered_vt;
kblockfile_load(&f->b, 0);
f->b.priv.curr_blk = 0;
- f->b.priv.cache_dirty = false;
}
else
f->b.priv.vt = &kblockfile_unbuffered_vt;