// Actually only used for movie requests
vector<pair<char, string> > KeyValueStore::forwardLongRequest(Protocol::KEYVALUE_STORE type, const string& req, Config::ThreadControl& control)
{
vector<pair<char, string> > ret;
Mutex& outMutex = control.getOutMutex();
Condition& cond = control.getOutCondition();
procForward.lock();
pair<char, string> freq(type, req);
forwardQueue.enqueue(freq);
outMutex.lock();
cond.signal();
outMutex.unlock();
forwardCond.wait(procForward);
while(true) {
pair<char, string> resp(respBuffer.dequeue());
ret.push_back(resp);
if(resp.first == Protocol::MLOOKUP_DONE || resp.first == Protocol::LOOKUP_NO) {
procForward.unlock();
break;
}
}
printKv("Done serving movie list");
return ret;
}
void destroy_ConnectionPool(void) {
// pop until queue is empty
photodb_client client;
while (!client_queue.size() != 0) {
client_queue.pop(client, 1, 0);
}
cout << "release OK" << endl;
}
void *ExporterSink::exporterSinkProcess(void *arg)
{
ExporterSink *sink = (ExporterSink *)arg;
ConcurrentQueue<Packet*> *queue = sink->getQueue();
Packet *p;
bool result;
// our deadline
struct timeval deadline;
int pckCount;
msg(MSG_INFO, "Sink: now running ExporterSink thread");
while(!sink->exitFlag) {
sink->startNewPacketStream();
// let's get the first packet
gettimeofday(&deadline, 0);
result = queue->pop(&p);
if(result == true) {
// we got a packet, so let's add the record
result = sink->addPacket(p);
}
pckCount = 1;
// now calculate the deadline by which the packet has to leave the exporter
gettimeofday(&deadline, 0);
deadline.tv_usec += sink->exportTimeout * 1000L;
if(deadline.tv_usec > 1000000L) {
deadline.tv_sec += (deadline.tv_usec / 1000000L);
deadline.tv_usec %= 1000000L;
}
while(!sink->exitFlag && (pckCount < sink->ipfix_maxrecords)) {
// Try to get next packet from queue before our deadline
result = queue->popAbs(deadline, &p);
// check for timeout and break loop if neccessary
if (!result) break;
// no timeout received, continue waiting, but
// count only if packet was added
if(sink->addPacket(p) == true)
pckCount++;
}
sink->flushPacketStream();
}
return 0;
}
pair<char, string> KeyValueStore::forwardRequest(Protocol::KEYVALUE_STORE type, const string& req, Config::ThreadControl& control)
{
Mutex& outMutex = control.getOutMutex();
Condition& cond = control.getOutCondition();
procForward.lock();
pair<char, string> freq(type, req);
forwardQueue.enqueue(freq);
outMutex.lock();
cond.signal();
outMutex.unlock();
forwardCond.wait(procForward);
pair<char, string> resp(respBuffer.dequeue());
procForward.unlock();
return resp;
}
void AggregationPerfTest::start(unsigned int numpackets)
{
char packetdata[] = { 0x00, 0x12, 0x1E, 0x08, 0xE0, 0x1F, 0x00, 0x15, 0x2C, 0xDB, 0xE4, 0x00, 0x08, 0x00, 0x45, 0x00,
0x00, 0x2C, 0xEF, 0x42, 0x40, 0x00, 0x3C, 0x06, 0xB3, 0x51, 0xC3, 0x25, 0x84, 0xBE, 0x5B, 0x20,
0xF9, 0x33, 0x13, 0x8B, 0x07, 0x13, 0x63, 0xF2, 0xA0, 0x06, 0x2D, 0x07, 0x36, 0x2B, 0x50, 0x18,
0x3B, 0x78, 0x67, 0xC9, 0x00, 0x00, 0x6F, 0x45, 0x7F, 0x40 };
unsigned int packetdatalen = 58;
// just push our sample packet a couple of times into the filter
struct timeval curtime;
BOOST_REQUIRE(gettimeofday(&curtime, 0) == 0);
ConcurrentQueue<Packet*>* filterq = filter->getQueue();
for (unsigned int i=0; i<numpackets; i++) {
Packet* p = packetManager->getNewInstance();
p->init((char*)packetdata, packetdatalen, curtime);
filterq->push(p);
}
}
TEST(ConcurrentQueue, ParallelPushPopAscIntegerAndCalculateTotalSum) {
tlx::ThreadPool pool(8);
ConcurrentQueue<size_t, std::allocator<size_t> > queue;
std::atomic<size_t> count(0);
std::atomic<size_t> total_sum(0);
static constexpr size_t num_threads = 4;
static constexpr size_t num_pushes = 10000;
// have threads push items
for (size_t i = 0; i != num_threads; ++i) {
pool.enqueue([&queue]() {
for (size_t i = 0; i != num_pushes; ++i) {
queue.push(i);
}
});
}
// have threads try to pop items.
for (size_t i = 0; i != num_threads; ++i) {
pool.enqueue([&]() {
while (count != num_threads * num_pushes) {
size_t item;
while (queue.try_pop(item)) {
total_sum += item;
++count;
}
}
});
}
pool.loop_until_empty();
ASSERT_TRUE(queue.empty());
ASSERT_EQ(count, num_threads * num_pushes);
// check total sum, no item gets lost?
ASSERT_EQ(total_sum, num_threads * num_pushes * (num_pushes - 1) / 2);
}
void KeyValueStore::doReplicate(Protocol::KEYVALUE_STORE type, const string& req, Config::ThreadControl& control, int remaining)
{
Mutex& mutex = control.getOutMutex();
// First craft message
pair<char, string> entry(type, KeyValueStore::createReplMsg(req, remaining));
forwardQueue.enqueue(entry);
mutex.lock();
control.getOutCondition().signal();
mutex.unlock();
}
void init_thrift_connection_pool(unsigned int max_client, char* meta_server_address, int meta_server_port, char* content_server_address, int content_server_port) {
if (client_queue.size() > 0) return;
for (unsigned int i = 0; i < max_client; i++) {
// init a client
photodb_client *client = new photodb_client;
boost::shared_ptr<TTransport> content_socket(new TSocket(content_server_address, content_server_port));
boost::shared_ptr<TTransport> content_transport(new TFramedTransport(content_socket));
boost::shared_ptr<TProtocol> content_protocol(new TBinaryProtocol(content_transport));
try {
content_transport->open();
PhotoDBClient *client_content = new PhotoDBClient(content_protocol);
boost::shared_ptr<TTransport> metadata_socket(new TSocket(meta_server_address, meta_server_port));
boost::shared_ptr<TTransport> metadata_transport(new TFramedTransport(metadata_socket));
boost::shared_ptr<TProtocol> metadata_protocol(new TBinaryProtocol(metadata_transport));
try {
//cout << i << endl;
metadata_transport->open();
PhotoDBClient *client_metadata = new PhotoDBClient(metadata_protocol);
client->content = client_content;
client->metadata = client_metadata;
// Put to queue
client_queue.put(*client, 1, 0);
} catch (TException& tx) {
cout << "Can not Open meta PORT number: " << meta_server_port << endl;
cout << "Can not Open meta host : " << meta_server_address << endl;
cout << "ERROR OPEN: " << tx.what() << endl;
}
} catch (TException& tx) {
cout << "Can not Open content PORT number: " << content_server_port << endl;
cout << "Can not Open meta host : " << content_server_address << endl;
cout << "ERROR OPEN: " << tx.what() << endl;
}
}
}
// Color image call back
void imgRcvd( const sensor_msgs::ImageConstPtr& msg )
{
try
{
cv::Mat im = cv_bridge::toCvCopy(msg, "bgr8")->image;
cv::Mat im_resized;
cv::resize( im, im_resized, cv::Size(), 0.5, 0.5 );
colorQueue.push(im_resized);
// cv::imshow("view", cv_bridge::toCvShare(msg, "bgr8")->image);
// cv::waitKey(30);
}
catch (cv_bridge::Exception& e)
{
ROS_ERROR("Could not convert from '%s' to 'bgr8'.", msg->encoding.c_str());
}
}
//depth image call back
void depthRcvd( const sensor_msgs::ImageConstPtr& msg )
{
try
{
cv::Mat depth = cv_bridge::toCvCopy(msg, "")->image;
//depth mask nan
cv::Mat mask = cv::Mat(depth != depth);
depth.setTo( 0, mask );
cv::Mat depth_resized;
cv::resize( depth, depth_resized, cv::Size(), 0.5, 0.5 );
depthQueue.push(depth_resized);
// cv::imshow("view-depth", cv_bridge::toCvShare(msg, "")->image);
// cv::waitKey(30);
}
catch (cv_bridge::Exception& e)
{
ROS_ERROR("Could not convert from '%s' to 'bgr8'.", msg->encoding.c_str());
}
}
void queueConsumer( )
{
cv::Mat im, depth;
ros::Rate rate(30);
int nFrame = 0;
while( ros::ok() )
{
//TODO :
// This synchronization is not perfect. Should ideally also push the timestamps to the queue and do
// it based on time stamps of the pushed images
cout << "size : "<< colorQueue.getSize() << " " << depthQueue.getSize() << endl;
if( colorQueue.getSize() < 1 || depthQueue.getSize() < 1 )
{
ros::spinOnce();
rate.sleep();
continue;
}
bool pop_im_flag = colorQueue.try_pop(im);
bool pop_depth_flag = depthQueue.try_pop(depth);
cout << "im.type() : " << type2str( im.type() ) << endl;
cout << "depth.type() : " << type2str( depth.type() ) << endl;
double minVal, maxVal;
cv::minMaxLoc( depth, &minVal, &maxVal );
cout << "depth min : "<< minVal << endl;
cout << "depth max : "<< maxVal << endl;
// save to file
write_to_opencv_file( nFrame, im, depth );
cv::imshow( "im", im );
cv::Mat falseColorsMap;
applyColorMap(depth, falseColorsMap, cv::COLORMAP_AUTUMN);
cv::imshow( "depth", depth );
cv::waitKey(1);
ros::spinOnce();
rate.sleep();
nFrame++;
}
}
void KeyValueStore::InternalThread::outgoingRoutine()
{
unsigned currId = -1;
const Config::ServerInformation& info = config.getServerInformation();
Config::ThreadControl& control = config.getThreadControl();
Mutex& outMutex = control.getOutMutex();
Condition& cond = control.getOutCondition();
Timespan timeout(3, 0); // 3 seconds to receive response
bool connected = false;
unsigned contentLength = 0;
char* buf = NULL;
while(control.isLive()) {
outMutex.lock();
cond.wait(outMutex);
// Check if server changed
if(control.getReconnectedTo()) {
printKv("Reconnecting");
currId = control.getConnectedToId();
const Config::ServerInformation& nextInfo = config.getServerInformation(currId);
try {
if(connected)
sock.close();
sock.connect(SocketAddress(nextInfo.address, nextInfo.internalPort), Timespan(5, 0));
connected = true;
printKv("Connected to outgoing server: "<< nextInfo.id);
//sock.setReceiveTimeout(timeout);
KeyValueStore::replicateDB(sock, control.getMachineCount());
} catch(Exception& e) {
printKv("Could not connect to next key-value internal server ("<< e.displayText() <<")" << endl
<< "System may be inconsistent until next reconnect.");
connected = false;
}
}
while(!forwardQueue.isEmpty()) {
pair<char, string> req(forwardQueue.dequeue());
if(req.first == Protocol::REPL_INS || req.first == Protocol::REPL_REM) {
try {
KeyValueStore::sendRequest(sock, req);
} catch(Exception& e) {
printKv("Could not replicate: "<< e.displayText());
}
} else if(req.first == Protocol::INS_MOVIE) { // Requests without responses
KeyValueStore::sendRequest(sock, req); // Not waiting for a response
} else if(req.first == Protocol::LUP_MOVIE && false) { // This returns many responses need to get all
printKv("Received movie lookup forward");
KeyValueStore::sendRequest(sock, req);
pair<char, string> resp(KeyValueStore::rcvResponse(sock, buf));
while(resp.first != Protocol::MLOOKUP_DONE && resp.first != Protocol::LOOKUP_NO) {
resp = KeyValueStore::rcvResponse(sock, buf);
respBuffer.enqueue(resp);
// replyForward(); // Send as we get them
}
respBuffer.enqueue(resp); // Make sure we also send our done response
printKv("Served movies");
replyForward();
} else {
// Forward and wait for response.
try {
KeyValueStore::sendRequest(sock, req);
pair<char, string> resp(KeyValueStore::rcvResponse(sock, buf));
respBuffer.enqueue(resp);
replyForward();
} catch(Exception& e) {
// If we timeout or anything, treat request as failed
printKv("Exception while forwarding: "<< e.displayText());
respBuffer.enqueue(pair<char, string>(Protocol::REQ_FAIL, ""));
replyForward();
}
}
}
// if(!respBuffer.isEmpty())
// replyForward();
outMutex.unlock();
}
}
// 模仿java.util.concurrent库并发容器及Mircosoft的并发容器而写的一个简单并发队列
// http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/BlockingQueue.html
// http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/LinkedBlockingQueue.html
// http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html
// http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/PriorityBlockingQueue.html
int main()
{
{
FifoConcurrentQueue<int> cq;
cq.push(3);
cq.push(1);
cq.push(2);
int i;
cq.pop(i);
assert(i == 3);
cq.pop(i);
assert(i == 1);
cq.pop(i);
assert(i == 2);
}
{
FiloConcurrentQueue<int> cq;
cq.push(3);
cq.push(1);
cq.push(2);
int i;
cq.pop(i);
assert(i == 2);
cq.pop(i);
assert(i == 1);
cq.pop(i);
assert(i == 3);
}
{
PrioConcurrentQueue<int> cq;
cq.push(3);
cq.push(1);
cq.push(2);
int i;
cq.pop(i);
assert(i == 3);
cq.pop(i);
assert(i == 2);
cq.pop(i);
assert(i == 1);
}
{
ConcurrentQueue<int, std::priority_queue<int, std::vector<int>, std::greater<int> >, ConcurrentQueueTraits::tagPRIO> cq;
cq.push(3);
cq.push(1);
cq.push(2);
int i;
cq.pop(i);
assert(i == 1);
cq.pop(i);
assert(i == 2);
cq.pop(i);
assert(i == 3);
}
}
int main(int argc, char *argv[]) {
// read config.ini file
Config config;
auto nthreads = config.get<int>("nthreads");
auto device = config.get<const char *>("disk_guest");
auto traceFile = config.get<const char *>("trace_file");
auto logDir = config.get<string>("log_dir");
// parse arg, prioritize argv over config
if (argc > 1) traceFile = argv[1];
if (argc > 2) nthreads = atoi(argv[2]);
if (strstr(device, "/dev/sda")) { // avoid accidentally writing to system part
fprintf(stderr, "Error trying to write to system partition %s\n", device);
return 1;
}
// use default value if not supplied
if (strcmp(device, "") == 0) device = DEFAULT_DEVICE;
if (strcmp(traceFile, "") == 0) traceFile = DEFAULT_TRACE_FILE;
if (strcmp(logDir.c_str(), "") == 0) logDir = DEFAULT_LOG_DIR;
if (nthreads == 0) nthreads = DEFAULT_NTHREADS;
srand(time(NULL)); // initialize seed
// print configuration
printf("trace : %s\n", traceFile);
printf("nthreads : %d\n", nthreads);
printf("device : %s\n", device);
printf("log : %s\n", logDir.c_str());
printf("precision : %fms\n", Timer::getResolution());
printf("Opening device %s\n", device);
int fd = open(device, O_DIRECT | O_RDWR | O_SYNC);
if (fd < 0) {
fprintf(stderr, "Error opening device '%s'\n", device);
return 1;
}
printf("Allocating buffer\n");
void *buf;
if (posix_memalign(&buf, MEM_ALIGN, LARGEST_REQUEST_SIZE * BYTE_PER_BLOCK)) {
fprintf(stderr, "Error allocating buffer\n");
return 1;
}
//memset(buf, rand() % 256, LARGEST_REQUEST_SIZE * BYTE_PER_BLOCK);
printf("Opening trace file\n");
TraceReader trace(traceFile); // open trace file
ConcurrentQueue<TraceEvent> queue; // queue of trace events
bool readDone = false; // whether or not we're done reading trace file
printf("Start reading trace\n");
thread fileThread([&] { // thread to read trace file
TraceEvent event;
while (trace.read(event)) {
event.time = event.time * 1000; // to microseconds
event.size = event.bcount * BYTE_PER_BLOCK;
queue.push(event);
}
readDone = true;
queue.notifyAll(); // notify worker we're done
});
queue.waitUntilFull(); // wait until at least queue's full
printf("Start replaying trace\n");
vector<thread> workers(nthreads); // generate worker threads
atomic<int> lateCount(0), threadId(0); // late I/O count and threadId
for (auto& t : workers) t = thread([&] { // launch workers
int myId = ++threadId; // id for this thread
int myLateCount = 0; // local lateCount for this thread
Logger logger(logDir + traceFile + to_string(myId));
Timer timer; // mark the beginning of worker thread
while (!readDone or !queue.empty()) {
TraceEvent event;
if (not queue.pop(event)) continue; // retry
long currentTime = timer.elapsedTime(), nextIoTime = event.time;
if (currentTime <= nextIoTime) { // we're early/on-time
//printf(". next=%ld current=%ld \n", nextIoTime, currentTime);
Timer::delay(nextIoTime - currentTime); // delay until ~specified time
} else { // we're late
//printf("x next=%ld current=%ld delta=%ld\n",
// nextIoTime, currentTime, currentTime-nextIoTime);
++myLateCount;
}
performIo(fd, buf, event, logger);
}
lateCount += myLateCount; // update global lateCount
});
fileThread.join(); // wait for all threads to finish
for (auto& t : workers) t.join();
printf("Late count: %d\n", lateCount.load());
Logger logger(logDir + traceFile + to_string(0));
logger.printf("%d\n", lateCount.load());
printf("Done\n");
return 0;
}
return_value *kv_up_get(unsigned long key_get, unsigned long size) {
try {
return_value *value_return = new return_value;
photodb_client *client = new photodb_client;
// wait 2 seconds
client_queue.pop(*client, 1, 2);
// get metadata
MetaValueResult metadata_result;
try {
client->metadata->getMeta(metadata_result, (long int) key_get); // Should check error
if (metadata_result.error != 0) {
client_queue.put(*client, 1, 0);
delete value_return;
return NULL;
}
} catch (TException& tx) {
cout << "ERROR GET META: " << tx.what() << endl;
client_queue.put(*client, 1, 0);
delete value_return;
return NULL;
}
// get content of image
ImgValueResult content_result;
try {
client->content->getImg(content_result, (long int) key_get, (int) size);
if (content_result.error != 0) {
client_queue.put(*client, 1, 0);
delete value_return;
return NULL;
}
} catch (TException& tx) {
cout << "ERROR GET META: " << tx.what() << endl;
client_queue.put(*client, 1, 0);
delete value_return;
return NULL;
}
client_queue.put(*client, 1, 0);
char *writable_content = new char[content_result.value.img.size() + 1];
std::copy(content_result.value.img.begin(), content_result.value.img.end(), writable_content);
writable_content[content_result.value.img.size() + 1] = '\0';
// Prepare date to return
value_return->content = writable_content;
value_return->size = content_result.value.img.size();
char *writable_etag = new char[metadata_result.value.etag.size() + 1];
std::copy(metadata_result.value.etag.begin(), metadata_result.value.etag.end(), writable_etag);
writable_etag[metadata_result.value.etag.size() + 1] = '\0';
// Prepare etag to return
value_return->etag = writable_etag;
value_return->etag_size = metadata_result.value.etag.size();
char *writable_contentType = new char[metadata_result.value.contentType.size() + 1];
std::copy(metadata_result.value.contentType.begin(), metadata_result.value.contentType.end(), writable_contentType);
writable_contentType[metadata_result.value.contentType.size()] = '\0';
value_return->contentType = writable_contentType;
value_return->content_type_size = metadata_result.value.contentType.size();
return value_return;
} catch (const exception& e) {
cerr << "EXCEPTION: " << e.what() << endl;
return NULL;
}
}