Re: memory leaks

"Thomas J. Gritzan" <phygon_antispam@gmx.de> ha scritto nel messaggio
news:hjkru0$o2i$1@newsreader3.netcologne.de...


So I think the following is the only way not to have memory leaks:

#include <windows.h>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <cstring>
#include <boost/circular_buffer.hpp>
using namespace std;
using namespace boost;

void getDateTime(char * szTime);
const int numbuff = 3;
const int buflen = 30;

struct Buffer
{
public:
 char payload[4096];
 int bytesRecorded;
 int user;
 Buffer() : bytesRecorded(0), user(0) { }
};

int main()
{
 circular_buffer<Buffer> cb(numbuff);

 // Insert elements
 printf("Push elements:\n");
 for(int i = 0; i<5; i++)
 {
  // Get time
  char szTime[30]; getDateTime(szTime);

  // Init Buff
  Buffer buff;
  ZeroMemory(&buff, sizeof(Buffer));

  memcpy(static_cast<void*>(buff.payload), static_cast<void*>(szTime),
buflen);
  buff.user = i;
  buff.bytesRecorded = buflen;

  cb.push_back(buff);

  printf("%s\n", buff.payload);
  Sleep(1000);
 }

 // Show elements:
 printf("Show elements:\n");
 for(int i = 0; i<(int)cb.size(); i++)
 {
  printf("%s\n", cb[i].payload);
 }

 system("pause");
 return EXIT_SUCCESS;
}

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);
}

where payload is set to 4096 bytes long. Indeed it's going to hold less data
but this way I can make sure it can hold from 0 to 4095 bytes...the other
filed in the struct will store how long payload actually is!

thanks