Re: WaitForSingleObject

"Larry" <>
Thu, 28 Jan 2010 17:43:26 +0100
"Larry" <> ha scritto nel messaggio

Ok! I am going to need a little help from you's a typical
scenario of my app:

wow...I am getting a lot of unhandle exception (writing location)

* Streaming Server v1.1 by THEARTOFWEB Software

#include <iostream>
#include <string>
#include <map>
#include <algorithm>
#include <process.h>
#include <cstdlib>
#include <ctime>
#include "socket.h"
#include <boost/circular_buffer.hpp>
using namespace std;
using namespace boost;

const string CRLF = "\r\n";
const int numbuff = 3;

unsigned int __stdcall Consumer(void* sock);
unsigned int __stdcall Producer(void*);

void getDateTime(char * szTime);

enum buffer_status
    BUFF_DONE = 1,
    BUFF_EMPTY = 0

struct buffer
    unsigned char data[1024];
    int bytesRecorded;
    int flag;
    buffer(const unsigned char * data_, const int bytesRecorded_, const int
flag_) :
        bytesRecorded(bytesRecorded_), flag(flag_)
            copy(data_, data_ + bytesRecorded_, data);

struct circular
    circular_buffer<buffer> cb;

// Global maps

map<int, circular> users;
map<int, circular>::iterator uit;
map<int, HANDLE> eventi;
map<int, HANDLE>::iterator eit;

// Declare Procuder && Cosumer CS


int main()
    // Initialize the critical section

    // Launch Producer Thread
    unsigned int prodRet;
        cout << "Launched Producer Thread!" << endl;

    // Release resources used by the critical section object.

    // Server.
    // Set up server (port: 8000, maxconn: 10)
    SocketServer sockIn(8000, 10);

        // ...wait for incoming connections...
        Socket* s = sockIn.Accept();

        // Initialize the critical section

        // Spawn a new Consumr Thread each
        // time a client connects.
        unsigned int sockRet;
            cout << "Spawned a new thread!" << endl;

        // Release resources used by the critical section object.


    return EXIT_SUCCESS;

// Consumer Thread
unsigned int __stdcall Consumer(void* sock)
    Socket* s = (Socket*) sock;

    s->SendBytes("Hello World!" + CRLF);

    int threadid = (int)GetCurrentThreadId();

    // Create Event && Push it in the event map
    HANDLE hevent = CreateEvent(NULL,FALSE,FALSE,NULL);

    // Prepare && Add circular buffer to the map
    circular c;

    for(int i = 0; i<numbuff; i++)

    users.insert(make_pair(threadid, c));

    // Read data from the buffer
    // and send it to the client
    // When using push_back the oldest
    // element in the circular buffer
    // will be in the index 0


        WaitForSingleObject(eventi[threadid], INFINITE);

        if(users[threadid] == BUFF_DONE)
            string line = (char*)users[threadid];
            int ret = s->SendBytes(line + CRLF);
            if(SOCKET_ERROR == ret)

    // Close & remove event from event map

    // Request ownership of the critical section.


    // Release ownership of the critical section.

    // Remove buffer from the map

    // Say bye to the client
    s->SendBytes("Bye bye!" + CRLF);

    // Disconnect client
    cout << "Closing thread..." << endl;
    delete s;
    return 0;

// Producer Thread
unsigned int __stdcall Producer(void*)
        char szTime[30]; getDateTime(szTime);

        for(uit=users.begin(); uit!=users.end(); ++uit)
            // Request ownership of the critical section.

            users[uit->first].cb.push_back(buffer((unsigned char*)szTime,
30, BUFF_DONE));


            // Release ownership of the critical section.

            cout << "Producer is writing to: " << uit->first << endl;

    return 0;

void getDateTime(char * szTime)
    time_t rawtime = time(NULL);
    struct tm timeinfo;
    gmtime_s(&timeinfo, &rawtime);
    strftime(szTime, 30, "%a, %d %b %Y %X GMT", &timeinfo);

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