C++ (Cpp) DevReadBlock Examples

Example #1

File: hw2.c Project: target511/OS_HW2

void BufRead(int blkno, void* pData) {
	Buf* find = BufFind(blkno);
	Buf* pNewBuf;
	// HIT
	if (find != NULL) {
		LruInsert(find);
		//pData = find->pMem;
		memmove(pData, find->pMem, strlen(find->pMem) + 1);
	}
	// MISS
	else {
		// Create New Buffer
		pNewBuf = BufGetNewBuffer();
		pNewBuf->blkno = blkno;
		pNewBuf->state = BUF_STATE_CLEAN;
		DevReadBlock(blkno, pNewBuf->pMem);

		BufInsertToTail(pNewBuf, pNewBuf->blkno, BUF_LIST_CLEAN);
		LruInsert(pNewBuf);

		memmove(pData, pNewBuf->pMem, strlen(pNewBuf->pMem) + 1);
	}
}

Example #2

File: hw2.c Project: dayomi/Homework-1

void BufRead(int blkno, void* pData)
{
	Buf* pBuf;

	pBuf = BufFind(blkno);
	if( pBuf != NULL )
	{
		removeLru(blkno);
		insertLru(pBuf);
		copyBlock((char*)pBuf->pMem, (char*)pData);
		return;
	}

	pBuf = popFree();
	pBuf->blkno = blkno;
	//pBuf->pMem = (void*)malloc(BLOCK_SIZE);
	DevReadBlock(blkno, (char*)pBuf->pMem);
	insertHash(pBuf);
	insertClean(pBuf);
	removeLru(blkno);
	insertLru(pBuf);

	copyBlock((char*)pBuf->pMem, (char*)pData);
}