extern RC readPreviousBlock(SM_FileHandle *fHandle, SM_PageHandle memPage)
{
int prevPage = getBlockPos(fHandle) - 1;
return readBlock(prevPage, fHandle, memPage);
}
asagi::Grid::Error grid::NumaLocalStaticGrid::init() {
unsigned long blockSize = getTotalBlockSize();
size_t block[3];
unsigned long masterBlockCount = getThreadBlockCount()*m_threadHandle.getThreadCount();
//the first thread allocates the memory.
if (m_threadHandle.getThreadRank(pthread_self())==0) {
asagi::Grid::Error error;
error = m_allocator.allocate(getType().getSize() * blockSize * masterBlockCount, m_data);
if (error != asagi::Grid::SUCCESS)
return error;
// Load the blocks from the file, which we control
/* for (unsigned long i = 0; i < getLocalBlockCount(); i++) {
if (getGlobalBlock(i) >= getBlockCount()){
// Last process(es) may control less blocks
break;
}
// Get x, y and z coordinates of the block
getBlockPos(getGlobalBlock(i), block);
// Get x, y and z coordinates of the first value in the block
for (unsigned char j = 0; j < 3; j++)
block[j] *= getBlockSize(j);
getType().load(getInputFile(),
block, getBlockSize(),
&m_data[getType().getSize() * blockSize * i]);
}*/
//m_threadHandle.m_staticPtr[pthread_self()][m_id]=m_data;
// std::cout << "Thread: " << pthread_self() << " Pointer: " << &m_data;
m_threadHandle.setStaticPtr(pthread_self(), m_data, m_id);
}
else {
//The memory was already allocated by the masterthread.
//Simply shift the Pointer in the right space.
m_data = m_threadHandle.getStaticPtr(m_threadHandle.getMasterthreadId(), m_id) + (getType().getSize() * blockSize * m_threadHandle.getThreadRank(pthread_self()) * getThreadBlockCount());
// std::cout << "Thread: " << pthread_self() << " Pointer: " << &m_data;
m_threadHandle.setStaticPtr(pthread_self(), m_data, m_id);
}
// Load the blocks from the file, which we control
for (unsigned long i = m_threadHandle.getThreadRank(pthread_self())*getThreadBlockCount(); i < (m_threadHandle.getThreadRank(pthread_self())*getThreadBlockCount()+getThreadBlockCount()); i++) {
if (getGlobalBlock(i) >= getBlockCount()){
// Last process(es) may control less blocks
break;
}
// Get x, y and z coordinates of the block
getBlockPos(getGlobalBlock(i), block);
// Get x, y and z coordinates of the first value in the block
for (unsigned char j = 0; j < 3; j++)
block[j] *= getBlockSize(j);
getType().load(m_threadHandle.getInputFile(),
block, getBlockSize(),
&m_data[getType().getSize() * blockSize * (i-m_threadHandle.getThreadRank(pthread_self())*getThreadBlockCount())]);
}
return asagi::Grid::SUCCESS;
}
RC readPreviousBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
printf("*** Inside readPreviousBlock method ***\n");
int rc = RC_NO_PREVIOUS_BLOCK;//Error message if no previous block exists.
if(fHandle != NULL)//check if fHandle exists
{
int prevBlock = getBlockPos(fHandle) - 1; //get current block position and subtract 1 block
rc = readBlock(prevBlock,fHandle,memPage);//calling readblock method
}
printf("*** Exiting readPreviousBlock method ***\n");
return rc;
}
/* readNextBlock method takes fhandle and character array as input parameters and reads the nextblock of 4096 bytes of memory page from the current postion of the file and returns RC_OK if operation is completed. */
RC readNextBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
printf("*** Inside readNextBlock method ***\n");
int rc = RC_NO_NEXT_BLOCK;//Error message if no next block exists.
if(fHandle != NULL)//check if fHandle exists
{
int nextBlock = getBlockPos(fHandle) + 1; //get current block position and add 1 block;
rc = readBlock(nextBlock,fHandle,memPage);//calling readblock method
}
printf("*** Exiting readNextBlock method ***\n");
return rc;
}
/* readCurrentBlock method reads data from the file and returns RC_OK if execution is successful. */
RC readCurrentBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
printf("*** Inside readCurrentBlock method ***\n");
int rc = RC_NO_CURRENT_BLOCK;//Error message if no current block exists.
if(fHandle != NULL)//check if fHandle exists
{
int currentBlock = getBlockPos(fHandle);// get current block/page position.
rc = readBlock(currentBlock,fHandle,memPage);// calling readBlock method.
}
printf("*** Exiting readCurrentBlock method ***\n");
return rc;
}
/* Try to create, open, and close a multi-page file */
void
testMultiPageContent(void)
{
SM_FileHandle fh;
SM_PageHandle ph;
int i;
testName = "test multi-page content";
ph = (SM_PageHandle) malloc(PAGE_SIZE);
// create a new page file
TEST_CHECK(createPageFile (TESTPF));
TEST_CHECK(openPageFile (TESTPF, &fh));
printf("created and opened file\n");
//ensure the capacity of the file with 4 pages
TEST_CHECK(ensureCapacity(4,&fh));
// read the current page into handle
TEST_CHECK(readCurrentBlock(&fh, ph));
// the page should be empty (zero bytes)
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in current page of freshly initialized page");
printf("current block was empty with the page number =%d\n", getBlockPos(&fh));
// read the next page into handle
TEST_CHECK(readNextBlock(&fh, ph));
// the page should be empty (zero bytes)
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in next page of freshly initialized page");
printf("the next block was empty\n");
printf("the updated page number is =%d\n",getBlockPos(&fh));
// change ph to be a string and write that one to disk
for (i=0; i < PAGE_SIZE; i++)
ph[i] = (i % 10) + '0';
TEST_CHECK(writeCurrentBlock(&fh, ph));
printf("writing current block with the page number =%d\n", getBlockPos(&fh));
// read back the page containing the string and check that it is correct
TEST_CHECK(readCurrentBlock (&fh, ph));
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
printf("reading back current block into memory with page number =%d\n", getBlockPos(&fh));
// read the last page into handle
TEST_CHECK(readLastBlock(&fh, ph));
// the page should be empty (zero bytes)
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in last page of freshly initialized page");
printf("last block was empty with the page number =%d\n", getBlockPos(&fh));
// change ph to be a string and write that one to disk
for (i=0; i < PAGE_SIZE; i++)
ph[i] = (i % 10) + '0';
TEST_CHECK(writeCurrentBlock(&fh, ph));
printf("writing current block with the page number =%d\n", getBlockPos(&fh));
// read back the page containing the string and check that it is correct
TEST_CHECK(readCurrentBlock (&fh, ph));
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == (i % 10) + '0'), "character in page read from disk is the one we expected.");
printf("reading back current block into memory with page number =%d\n", getBlockPos(&fh));
// destroy new page file
TEST_CHECK(destroyPageFile (TESTPF));
TEST_DONE();
}
extern RC readNextBlock(SM_FileHandle *fHandle, SM_PageHandle memPage)
{
int nextBlock = getBlockPos(fHandle) + 1;
return readBlock(nextBlock, fHandle, memPage);
}
extern RC readCurrentBlock(SM_FileHandle *fHandle, SM_PageHandle memPage)
{
int currBlock = getBlockPos(fHandle);
return readBlock(currBlock, fHandle, memPage);
}
/* Read next page relative to the curPagePos of the file
* by calling readBlock() with pageNum = curPagePos + 1.
* The value of curPagePos was set to curPagePos + 1 after reading.
*/
RC
readNextBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
return readBlock(getBlockPos(fHandle)+1,fHandle,memPage);;
}
/* Read current page according to the curPagePos of the file.
* by calling readBlock() with pageNum = curPagePos.
*/
RC
readCurrentBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
return readBlock(getBlockPos(fHandle),fHandle,memPage);;
}
/* Read previous page relative to the curPagePos of the file,
* by calling readBlock() with pageNum = curPagePos - 1.
* The value of curPagePos was set to curPagePos - 1 after reading.
*/
RC
readPreviousBlock (SM_FileHandle *fHandle, SM_PageHandle memPage)
{
return readBlock(getBlockPos(fHandle)-1,fHandle,memPage);;
}
//Write Current Block
RC writeCurrentBlock(SM_FileHandle *fHandle, SM_PageHandle memPage)
{
int pos = getBlockPos(fHandle->curPagePos);
writeBlock (pos, fHandle, memPage);
}
void testAppendEnsureCapMetaData()
{
SM_FileHandle fh;
SM_PageHandle ph;
ph = (SM_PageHandle) malloc(PAGE_SIZE);
TEST_CHECK(createPageFile (TESTPF));
TEST_CHECK(openPageFile (TESTPF, &fh));
//Append an empty block to the file.
appendEmptyBlock(&fh);
//Check whether the appended block has only 4096 '\0' in the currentBlock.
readBlock(getBlockPos(&fh),&fh,ph);
int i;
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in first page of freshly initialized page");
printf("Appended Block was empty\n");
//Page File should contain only 2 blocks.first block during createPage and second during appendBlock
ASSERT_TRUE((fh.totalNumPages == 2), "Number of Blocks : 2");
//Current Block postion should be 1
ASSERT_TRUE((fh.curPagePos == 1), "Current Page Position is 1");
//add 3 more blocks to the Page File.
ensureCapacity(5,&fh);
//Verify whether the freshly added 3 blocks are of '\0' characters
//[START]
readBlock(2,&fh,ph);
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in first page of freshly initialized page");
readBlock(3,&fh,ph);
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in first page of freshly initialized page");
readBlock(4,&fh,ph);
for (i=0; i < PAGE_SIZE; i++)
ASSERT_TRUE((ph[i] == 0), "expected zero byte in first page of freshly initialized page");
printf("Freshly appended 3 blocks are empty\n");
//[END]
//Page File should contain only 5 blocks, as we have called ensureCapacity(5)
ASSERT_TRUE((fh.totalNumPages == 5), "Number of Blocks : 5");
//Current Block postion should be 4
ASSERT_TRUE((fh.curPagePos == 4), "Current Page Position is 4");
//Store the metaData into the file and close the pagefile.
int totalNoOfPages = fh.totalNumPages;
char fileName[100];
memset(fileName,'\0',100);
strcpy(fileName,fh.fileName);
char metaDataFromFile[100];
memset(metaDataFromFile,'\0',100);
closePageFile(&fh);
//Verify whether the written MetaData is correct or not
//[START]
char metaDataToBeVerified[100];
memset(metaDataToBeVerified,'\0',100);
char returnData[100];
memset(returnData,'\0',100);
metaDataToBeVerified[0]= 'P';metaDataToBeVerified[1]= 'S';metaDataToBeVerified[2]= ':';metaDataToBeVerified[3]= '\0';
getString(PAGE_SIZE,returnData);
strcat(metaDataToBeVerified,returnData);
strcat(metaDataToBeVerified,";");
memset(returnData,'\0',100);
strcat(metaDataToBeVerified,"NP:");
getString(totalNoOfPages,returnData);
strcat(metaDataToBeVerified,returnData);
strcat(metaDataToBeVerified,";");
readMetaDataFromFile(fileName,metaDataFromFile);
ASSERT_TRUE((strcmp(metaDataToBeVerified, metaDataFromFile) == 0), "MetaData read from file is correct");
printf("Read Meta Data from file is :: %s\n",metaDataToBeVerified);
//[END]
TEST_CHECK(destroyPageFile(TESTPF));
free(ph);
TEST_DONE();
}
