// mMul memory-wise
matrix* mMul(matrix a, matrix b){
int i, j, k;
matrix* resultMatrix;
uint8_t factor;
uint8_t *aVector, *bVector, *resVector;
// Check dimension correctness
if(a.nColumns != b.nRows){
printf("mMul : Error in Matrix dimensions. Cannot continue\n");
exit(1);
}
resultMatrix = mCreate(a.nRows, b.nColumns);
for(i = 0; i < resultMatrix->nRows; i++){
aVector = a.data[i];
resVector = resultMatrix->data[i];
for(j = 0; j < a.nColumns; j++){
factor = aVector[j];
if(factor != 0x00){
bVector = b.data[j];
for(k = 0; k < b.nColumns; k++){
resVector[k] = gadd(resVector[k], gmul(factor, bVector[k]));
}
}
}
}
return resultMatrix;
}
matrix* mCopy(matrix orig){
int i;
matrix* resultMatrix = mCreate(orig.nRows, orig.nColumns);
for(i = 0; i < resultMatrix->nRows; i++){
memcpy(resultMatrix->data[i], orig.data[i], resultMatrix->nColumns * sizeof(uint8_t));
}
return resultMatrix;
}
pluginInterface *pluginLoader::create(){
if(mPlugin == NULL){
#if _DEBUG_LEVEL >= 1
std::cerr << "plugin not loaded!" << std::endl;
#endif
return NULL;
}
pluginInterface *pli = mCreate();
mInstances.push_back(pli);
return pli;
}
matrix* getRandomMatrix(int rows, int columns){
int i, j;
matrix* resultMatrix = mCreate(rows, columns);
for(i = 0; i < resultMatrix->nRows; i++){
for(j = 0; j < resultMatrix->nColumns; j++){
resultMatrix->data[i][j] = getRandom();
}
}
return resultMatrix;
}
matrix* getIdentityMatrix(int rows){ // Returns square identity matrix
int i, j;
matrix* resultMatrix = mCreate(rows, rows);
for(i = 0; i < resultMatrix->nRows; i++){
for(j = 0; j < resultMatrix->nColumns; j++){
if(i==j){
resultMatrix->data[i][j] = 1;
} else {
resultMatrix->data[i][j] = 0;
}
}
}
return resultMatrix;
}
int matrixTest(){
matrix* a, *b, *c;
// Create & Destroy Matrices
a = getRandomMatrix(1000,1000);
b = getRandomMatrix(1000,1000);
c = mMul(*a, *b);
mFree(a);
mFree(b);
mFree(c);
mFree(mCreate(0,0));
return true;
}
// ------------------------------------------------------------------------------------------------
int TProblemManager::LoadProblemLibrary(const std::string& libPath)
{
if (mLibHandle)
FreeProblemLibrary();
#ifdef WIN32
mLibHandle = LoadLibrary(TEXT(libPath.c_str()));
if (!mLibHandle)
{
std::cerr << "Cannot load library: " << TEXT(libPath.c_str()) << std::endl;
return TProblemManager::ERROR_;
}
#else
mLibHandle = dlopen(libPath.c_str(), RTLD_LAZY);
if (!mLibHandle)
{
std::cerr << dlerror() << std::endl;
return TProblemManager::ERROR_;
}
#endif
#ifdef WIN32
mCreate = (create_t*) GetProcAddress(mLibHandle, "create");
mDestroy = (destroy_t*) GetProcAddress(mLibHandle, "destroy");
if (!mCreate || !mDestroy)
{
std::cerr << "Cannot load symbols: " << GetLastError() << std::endl;
FreeLibHandler();
return TProblemManager::ERROR_;
}
#else
dlerror();
mCreate = (create_t*) dlsym(mLibHandle, "create");
char* dlsym_error = dlerror();
if (dlsym_error)
{
mCreate = NULL;
std::cerr << dlsym_error << std::endl;
FreeLibHandler();
return TProblemManager::ERROR_;
}
mDestroy = (destroy_t*) dlsym(mLibHandle, "destroy");
dlsym_error = dlerror();
if (dlsym_error)
{
mCreate = NULL;
mDestroy = NULL;
std::cerr << dlsym_error << std::endl;
FreeLibHandler();
return TProblemManager::ERROR_;
}
#endif
mProblem = mCreate();
if (!mProblem)
{
FreeLibHandler();
mCreate = NULL;
mDestroy = NULL;
std::cerr << "Cannot create problem instance" << std::endl;
}
return TProblemManager::OK_;
}
void handleInCoded(decoderstate* state, uint8_t* buffer, int size) {
do_debug("in handleInCoded\n");
datapacket* packet = bufferToData(buffer, size);
matrix *coeffs, *tmp;
int bufLen, i, delta;
uint8_t* dataVector;
uint8_t* coeffVector;
uint8_t ackBuffer[100];
uint16_t loss, total;
//printf("Data received :\n");
//dataPacketPrint(*packet);
do_debug("p->packetNumber = %2x\n", packet->packetNumber);
// ~~ Allocate blocks & coefficient matrix if necessary ~~
while(state->currBlock + state->numBlock - 1 < packet->blockNo) {
do_debug("CurrBlock = %d, numBlock = %d, blockNo of received Data = %d\n", state->currBlock, state->numBlock, packet->blockNo);
state->blocks = realloc(state->blocks, (state->numBlock + 1) * sizeof(matrix*));
state->blocks[state->numBlock] = mCreate(BLKSIZE, PACKETSIZE);
state->coefficients = realloc(state->coefficients, (state->numBlock + 1) * sizeof(matrix*));
state->coefficients[state->numBlock] = mCreate(BLKSIZE, BLKSIZE);
state->nPacketsInBlock = realloc(state->nPacketsInBlock, (state->numBlock + 1) * sizeof(int));
state->nPacketsInBlock[state->numBlock] = 0;
state->isSentPacketInBlock = realloc(state->isSentPacketInBlock, (state->numBlock + 1) * sizeof(int*));
state->isSentPacketInBlock[state->numBlock] = malloc(BLKSIZE * sizeof(int));
for(i = 0; i<BLKSIZE; i++) {
state->isSentPacketInBlock[state->numBlock][i] = false;
}
state->numBlock ++;
}
if(packet->blockNo >= state->currBlock) {
if((packet->packetNumber & BITMASK_NO) >= state->nPacketsInBlock[packet->blockNo - state->currBlock]) { // Try to append
// Compute coefficients
coeffs = mCreate(1, BLKSIZE);
dataVector = calloc(PACKETSIZE, sizeof(uint8_t));
coeffVector = calloc(BLKSIZE, sizeof(uint8_t));
if(((packet->packetNumber) & BITMASK_FLAG) == FLAG_CLEAR) {
coeffs->data[0][((packet->packetNumber) & BITMASK_NO)] = 1;
} else if(((packet->packetNumber) & BITMASK_FLAG) == FLAG_CODED) {
srandom(packet->seqNo);
tmp = getRandomMatrix(1, BLKSIZE);
memcpy(coeffs->data[0], tmp->data[0], packet->packetNumber & BITMASK_NO);
mFree(tmp);
} else {
printf("handleInCoded : received a bogus data packet. DIE.");
exit(1);
}
// ~~ Append to the matrix and eventually decode ~~
memcpy(dataVector, packet->payloadAndSize, packet->size);
memcpy(coeffVector, coeffs->data[0], BLKSIZE);
mFree(coeffs);
if(appendCodedPayload(state, coeffVector, dataVector, packet->blockNo - state->currBlock)) {
do_debug("Received an innovative packet\n");
state->stats_nInnovative++;
} else {
do_debug("Received packet was not innovative. Drop.\n");
if(packet->blockNo - state->currBlock == 0) {
state->stats_nAppendedNotInnovativeGaloisFirstBlock++;
} else {
state->stats_nAppendedNotInnovativeGaloisOtherBlock++;
}
}
free(dataVector);
free(coeffVector);
} else {
do_debug("Received packet has NO chance to be innovative. Drop.\n");
state->stats_nAppendedNotInnovativeCounter++;
}
} else {
do_debug("Packet received for an outdated block. Drop.\n");
state->stats_nOutdated++;
}
// ~~ Try to decode ~~
if((state->numBlock > 0) && (state->nPacketsInBlock[0] > 0)) {
do_debug("Calling extractData() while numBlock = %d, currBlock = %d, nPacketInBlock[0] = %d\n", state->numBlock, state->currBlock, state->nPacketsInBlock[0]);
extractData(state);
}
// ~~ Update the loss information buffer ~~
delta = packet->seqNo - state->lastSeqReceived;
if(delta > 0) {
for(i = state->lossBuffer->currentIndex + 1; i < (state->lossBuffer->currentIndex + delta); i++) {
state->lossBuffer->isReceived[i % LOSS_BUFFER_SIZE] = false;
}
state->lossBuffer->isReceived[(state->lossBuffer->currentIndex + delta) % LOSS_BUFFER_SIZE] = true;
state->lossBuffer->currentIndex = (state->lossBuffer->currentIndex + delta) % LOSS_BUFFER_SIZE;
} else {
state->lossBuffer->isReceived[(state->lossBuffer->currentIndex + delta + LOSS_BUFFER_SIZE) % LOSS_BUFFER_SIZE] = true;
}
state->lastSeqReceived = max(state->lastSeqReceived, packet->seqNo);
// ~~ Send an ACK back ~~
ackpacket ack;
ack.ack_dofs = malloc(DOFS_LENGTH * sizeof(uint8_t));
for(i = 0; i < DOFS_LENGTH; i++) {
if(state->numBlock > i) { // If the i-th block is allocated
// Include the number of packets received
ack.ack_dofs[i] = state->nPacketsInBlock[i];
} else {
// Otherwise, let it just be zero
ack.ack_dofs[i] = 0;
}
}
ack.ack_seqNo = packet->seqNo;
ack.ack_currBlock = state->currBlock;
countLoss(*state, &loss, &total);
ack.ack_loss = loss;
ack.ack_total = total;
//printf("ACK to send :\n");
//ackPacketPrint(ack);
ackPacketToBuffer(ack, ackBuffer, &bufLen);
free(ack.ack_dofs);
state->ackToSend = realloc(state->ackToSend, (state->nAckToSend + 1) * sizeof(uint8_t*));
state->ackToSendSize = realloc(state->ackToSendSize, (state->nAckToSend + 1) * sizeof(int));
state->ackToSend[state->nAckToSend] = malloc(bufLen * sizeof(uint8_t));
memcpy(state->ackToSend[state->nAckToSend], ackBuffer, bufLen);
state->ackToSendSize[state->nAckToSend] = bufLen;
state->nAckToSend ++;
free(packet->payloadAndSize);
free(packet);
}
NEOERR *skipNewList(skipList *skip, int threaded, int root, int maxLevel,
int flushLimit, skipFreeValue freeValue, void *ctx)
{
NEOERR *err;
skipList list;
UINT32 i;
*skip = NULL;
if(! (list = calloc(1, sizeof(struct skipList_struct))))
return nerr_raise(NERR_NOMEM, "Unable to allocate memore for skiplist");
if (maxLevel == 0)
return nerr_raise(NERR_ASSERT, "maxLevel must be greater than 0");
if(maxLevel >= SKIP_MAXLEVEL) /* check limits */
maxLevel = SKIP_MAXLEVEL-1;
if(root > 4)
root = 4;
else if(root < 2)
root = 2;
list->maxLevel = maxLevel; /* init list constants */
list->randLimit = 1.0 / (double)root;
list->threaded = threaded;
list->freeValue = freeValue;
list->freeValueCtx = ctx;
do {
if(threaded) {
list->flushLimit = flushLimit;
err = mCreate(&list->read);
if (err != STATUS_OK) break;
err = mCreate(&list->write);
if (err != STATUS_OK) break;
err = cCreate(&list->resume);
if (err != STATUS_OK) break;
err = cCreate(&list->flush);
if (err != STATUS_OK) break;
}
err = skipAllocItem(&(list->header), list->maxLevel, 0, NULL);
if (err != STATUS_OK) break;
err = skipAllocItem(&(list->tail), list->maxLevel, (UINT32)-1, NULL);
if (err != STATUS_OK) break;
err = skipAllocItem(&(list->deleted), 0, 0, NULL);
if (err != STATUS_OK) break;
for(i = 0; /* init header and tail */
i <= list->maxLevel;
i++) {
list->tail->next[i] = NULL;
list->header->next[i] = list->tail;
}
list->deleted->next[1] = list->tail;
*skip = list;
return STATUS_OK; /* return new list */
} while(FALSE);
if(list->header) /* failed to make list, bail */
free(list->header);
free(list);
return nerr_pass(err);
}