/* Allocate in MidMem a new empty Block for file
* opening with fileDesc using services provided
* from lower Levels. Set blockbuf to point to
* the beginning of this block and inform blockNum.
* Check all errors that may occur and return
* respective error code, else return BFE_OK.
*/
int BF_AllocBlock(int fileDesc ,int *blockNum ,char **blockBuf )
{
int RetVal;
fileInfo_t finfo;
if ( (RetVal=FMM_HEAD_GetFirstEmpty(fileDesc)) < 0 ) /* check header to find pos of first empty block */
return RetVal;
*blockNum=RetVal; /* inform blockNum */
finfo.fd=fileDesc;
if ( (RetVal=FMM_GetFileInfoByFD(&finfo)) != BFE_OK ) /* FMM_GetFileInfoByFD checkinging valid of fd */
return RetVal;
if ( (RetVal=BMM_AllocBlock(finfo,*blockNum,blockBuf)) != BFE_OK ) /* Allock block */
return RetVal;
if ( (RetVal=FMM_HEAD_Set(fileDesc,*blockNum,TRUE)) != BFE_OK ) /* inform header */
return RetVal;
return BFE_OK;
}
int main(void) {
int rvalue;
FILE *fp1, *fp2;
char *buffer, *bufStart;
int fd11, fd12, fd13;
int fd21, fd22, fd23;
int i,j, randNum, randFd;
fileInfo_t finfo;
// ---------------------- Dimiourgia twn fileName1 kai fileName2 ----------------------
// ---------------------- Dimiourgia tou fileName1 ----------------------
printf("\n--------------\n");
printf("CREATING FILES\n");
printf("--------------\n\n");
// Elegxos an yparxei to fileName1
printf("Checking if file %s exists...\n\n", fileName1);
if (HDF_ExistsFile(fileName1) == TRUE) {
printf("Checkpoint 1:\n");
printf("HDF_ExistsFile returned TRUE!\n\n");
}
// Dimiourgia tou arxeiou fileName1
printf("Creating file %s...\n\n", fileName1);
if ( (rvalue = HDF_CreateFile(fileName1)) != BFE_OK) {
printf("Checkpoint 2:\n");
printf("HDF_CreateFile() returned %d!\n\n", rvalue);
}
// Anoigma tou arxeiou fileName1
printf("Opening file %s...\n\n", fileName1);
if ((rvalue = HDF_OpenFile(fileName1, &fp1)) != BFE_OK)
{
printf("Checkpoint 3:\n");
printf("HDF_OpenFile() returned %d, should have returned 0!\n\n",rvalue);
}
// Dimiourgia epikefalidas tou arxeiou sti mnimi
buffer = malloc(sizeof(char) * BF_BLOCK_SIZE);
bufStart = buffer;
memset(buffer, 0, BF_BLOCK_SIZE);
// Antigrafi epikefalidas sto block 0 tou arxeiou
printf("Writing file header to disk...\n\n");
if ((rvalue = HDF_WriteBlock(0, buffer, fp1)) != BFE_OK)
{
printf("Checkpoint 4:");
printf("HDF_WriteBlock() returned %d!\n\n",rvalue);
}
// Kleisimo tou arxeiou fileName1
printf("Closing file %s\n\n", fileName1);
if ((rvalue = HDF_CloseFile(fp1)) != BFE_OK)
{
printf("Checkpoint 5:\n");
printf("HDF_CloseFile() returned %d!\n\n", rvalue);
}
// ---------------------- Dimiourgia tou fileName2 ----------------------
// Elegxos an yparxei to fileName2
printf("Checking if file %s exists...\n\n", fileName2);
if (HDF_ExistsFile(fileName2) == TRUE) {
printf("Checkpoint 6:\n");
printf("HDF_ExistsFile returned TRUE!\n\n");
}
// Dimiourgia tou arxeiou fileName2
printf("Creating file %s...\n\n", fileName2);
if ( (rvalue=HDF_CreateFile(fileName2)) != BFE_OK) {
printf("Checkpoint 7:\n");
printf("HDF_CreateFile() returned %d!\n\n", rvalue);
}
// Anoigma tou arxeiou fileName2
printf("Opening file %s...\n\n", fileName2);
if ((rvalue = HDF_OpenFile(fileName2, &fp2)) != BFE_OK)
{
printf("Checkpoint 8:\n");
printf("HDF_OpenFile() returned %d, should have returned 0!\n\n",rvalue);
}
// Antigrafi epikefalidas sto block 0 tou arxeiou
printf("Writing file header to disk...\n\n");
if ((rvalue = HDF_WriteBlock(0, buffer, fp2)) != BFE_OK)
{
printf("Checkpoint 9:");
printf("HDF_WriteBlock() returned %d!\n\n",rvalue);
}
// Kleisimo tou arxeiou fileName2
printf("Closing file %s\n\n", fileName2);
if ((rvalue = HDF_CloseFile(fp2)) != BFE_OK)
{
printf("Checkpoint 10:\n");
printf("HDF_CloseFile() returned %d!\n\n", rvalue);
}
// ---------------------- FMM epipedo ----------------------
printf("------------------------------------\n");
printf("OPENING AND PROCESSING FILES\n");
printf("------------------------------------\n\n");
FMM_Init();
BMM_Init();
// 1o anoigma tou fileName1
printf("Opening file %s (1)...\n\n", fileName1);
if ((fd11 = FMM_Open(fileName1)) < 0) {
printf("Checkpoint 11:\n");
printf("FMM_Open() returned %d!\n\n", fd11);
}
// 2o anoigma tou fileName1
printf("Opening file %s (2)...\n\n", fileName1);
if ((fd12 = FMM_Open(fileName1)) < 0) {
printf("Checkpoint 12:\n");
printf("FMM_Open() returned %d!\n\n", fd12);
}
// 3o anoigma tou fileName1
printf("Opening file %s (3)...\n\n", fileName1);
if ((fd13 = FMM_Open(fileName1)) < 0) {
printf("Checkpoint 13:\n");
printf("FMM_Open() returned %d!\n\n", fd12);
}
// 1o anoigma tou fileName2
printf("Opening file %s (1)...\n\n", fileName2);
if ((fd21 = FMM_Open(fileName2)) < 0) {
printf("Checkpoint 14:\n");
printf("FMM_Open() returned %d!\n\n", fd21);
}
// 2o anoigma tou fileName2
printf("Opening file %s (2)...\n\n", fileName2);
if ((fd22 = FMM_Open(fileName2)) < 0) {
printf("Checkpoint 15:\n");
printf("FMM_Open() returned %d!\n\n", fd21);
}
// 3o anoigma tou fileName2
printf("Opening file %s (3)...\n\n", fileName2);
if ((fd23 = FMM_Open(fileName2)) < 0) {
printf("Checkpoint 16:\n");
printf("FMM_Open() returned %d!\n\n", fd21);
}
// Ftiakse BLOCKS blocks gia kathe ena apo ta files
for (i=0;i<BLOCKS;i++){
randNum = rand()%3;
if (randNum==1)
randFd = fd13;
else if (randNum==2)
randFd = fd11;
else
randFd = fd12;
finfo.fd = randFd;
if ((rvalue = FMM_GetFileInfoByFD(&finfo)) < 0) {
printf("Checkpoint 17:\n");
printf("FMM_GetFileInfoByFD() returned %d!\n\n", rvalue);
}
if ((rvalue = BMM_AllocBlock(finfo,i,&buffer)) < 0) {
printf("Checkpoint 18:\n");
printf("BMM_AllocBlock() returned %d!\n\n", rvalue);
}
if ((rvalue = FMM_HEAD_Set(fd11, i, TRUE)) < 0) {
printf("Checkpoint 19:\n");
printf("FMM_HEAD_Set() returned %d!\n\n", rvalue);
}
// Tropopoiisi tou block pou "efere" i BMM_AllocBlock
j=(300-i)*(300-i);
memcpy(buffer,&j,sizeof(int));
if ((rvalue = BMM_UnpinBlock(finfo,i,TRUE)) < 0) {
printf("Checkpoint 20:\n");
printf("BMM_UnpinBlock() returned %d!\n\n", rvalue);
}
randNum = rand()%3;
if (randNum==1)
randFd = fd22;
else if (randNum==2)
randFd = fd21;
else
randFd = fd23;
finfo.fd = randFd;
if ((rvalue = FMM_GetFileInfoByFD(&finfo)) < 0) {
printf("Checkpoint 21:\n");
printf("FMM_GetFileInfoByFD() returned %d!\n\n", rvalue);
}
if ((rvalue = BMM_AllocBlock(finfo,i,&buffer)) < 0) {
printf("Checkpoint 22:\n");
printf("BMM_AllocBlock() returned %d!\n\n", rvalue);
}
if ((rvalue = FMM_HEAD_Set(fd21, i, TRUE)) < 0) {
printf("Checkpoint 23:\n");
printf("FMM_HEAD_Set() returned %d!\n\n", rvalue);
}
// Tropopoiisi tou block pou "efere" i BMM_AllocBlock
memcpy(buffer,&i,sizeof(int));
if ((rvalue = BMM_UnpinBlock(finfo,i,TRUE)) < 0) {
printf("Checkpoint 24:\n");
printf("BMM_UnpinBlock() returned %d!\n\n", rvalue);
}
}
finfo.fd = fd11;
if ((rvalue = FMM_GetFileInfoByFD(&finfo)) < 0) {
printf("Checkpoint 25:\n");
printf("FMM_GetFileInfoByFD() returned %d!\n\n", rvalue);
}
if ((rvalue = BMM_Flush(finfo)) < 0) {
printf("Checkpoint 26:\n");
printf("BMM_Flush() returned %d!\n\n", rvalue);
}
finfo.fd = fd21;
if ((rvalue = FMM_GetFileInfoByFD(&finfo)) < 0) {
printf("Checkpoint 27:\n");
printf("FMM_GetFileInfoByFD() returned %d!\n\n", rvalue);
}
if ((rvalue = BMM_Flush(finfo)) < 0) {
printf("Checkpoint 28:\n");
printf("BMM_Flush() returned %d!\n\n", rvalue);
}
printf("-------------\n");
printf("CLOSING FILES\n");
printf("-------------\n\n");
// Kleisimo 1ou anoigmatos tou fileName1
printf("Closing file %s (1)...\n\n", fileName1);
if ((rvalue = FMM_Close(fd11)) != BFE_OK) {
printf("Checkpoint 29:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
// Kleisimo 2ou anoigmatos tou fileName1
printf("Closing file %s (2)...\n\n", fileName1);
if ((rvalue = FMM_Close(fd12)) != BFE_OK) {
printf("Checkpoint 31:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
// Kleisimo 3ou anoigmatos tou fileName1
printf("Closing file %s (3)...\n\n", fileName1);
if ((rvalue = FMM_Close(fd13)) != BFE_OK) {
printf("Checkpoint 31:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
// Kleisimo 1ou anoigmatos tou fileName2
printf("Closing file %s (1)...\n\n", fileName2);
if ((rvalue = FMM_Close(fd21)) != BFE_OK) {
printf("Checkpoint 32:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
// Kleisimo 2ou anoigmatos tou fileName2
printf("Closing file %s (2)...\n\n", fileName2);
if ((rvalue = FMM_Close(fd22)) != BFE_OK) {
printf("Checkpoint 33:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
// Kleisimo 3ou anoigmatos tou fileName2
printf("Closing file %s (3)...\n\n", fileName2);
if ((rvalue = FMM_Close(fd23)) != BFE_OK) {
printf("Checkpoint 34:\n");
printf("FMM_Close() returned %d!\n\n", rvalue);
}
free(bufStart);
return 0;
}