Unable to invoke time critical function in ++ using timeGetTime() in VC++ - c++

Question

I want to send data through socket. I want my send code to be run automatically after every 10ms, so I used a logic using timeGetTime(). But it is not getting invoked, please help me. The program runs upto now time printing code but it is not entering the if condition!
#include<stdio.h>
#include<conio.h>
#include<iostream>
#include<string.h>
#include<winsock2.h>
#include<windows.h>
#include<Windows.h>
#include<fcntl.h>
#include<errno.h>
#include<time.h>
#pragma comment(lib,"ws2_32.lib")
#pragma comment(lib,"winmm.lib")
#define BUFF_SIZE 10485760
int sock_fd = 0;
char *a;
int nread = 0;
int c = 0;
int k = 0;
int nCount = 0;
int main()
{
int ret=0, j=0;
a = (char*)calloc(BUFF_SIZE, sizeof(char));
WSAData version; //We need to check the version.
WORD mkword=MAKEWORD(2,2);
int what=WSAStartup(mkword,&version);
if(what!=0)
{
std::cout<<"This version is not supported! - \n"<<WSAGetLastError()<<std::endl;
}
else
{
std::cout<<"Initialised.\n"<<std::endl;
}
sock_fd =socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(sock_fd==INVALID_SOCKET)
{
std::cout<<"Creating socket fail\n";
}
else
{
std::cout<<"It was okay to create the socket\n";
}
//Socket address information
sockaddr_in addr;
addr.sin_family=AF_INET;
addr.sin_addr.s_addr=inet_addr("10.0.0.51");
addr.sin_port=htons(5001);
int conn=connect(sock_fd,(SOCKADDR*)&addr,sizeof(addr));
if(conn==SOCKET_ERROR){
std::cout<<"Error - when connecting "<<WSAGetLastError()<<std::endl;
}
else
{
std::cout<<"socket connect succesfully";
}
FILE*fp = fopen("binary.bin","wb+");
printf("\n File opened successfully through fopen()\n");
//filling our dynamic memory pointed by a with some dynamic data
for(k=0;k<BUFF_SIZE;k++)
{
a[k]=k;
}
/* writing in file*/
if (( c = fwrite(a, 1, BUFF_SIZE, fp)) != BUFF_SIZE)
{
printf ("\n Error : file write failure");
_getch();
return 1;
}
printf("\n write bytes=%d\n",c);
/* First read file in chunks of 10 bytes */
fseek(fp, 0, SEEK_SET);
int nread = fread(a, 1, BUFF_SIZE,fp);
printf(" read Bytes %d \n", nread);
unsigned int last_call_time = timeGetTime();
printf("last call time %d\n", last_call_time);
while(true)
{
unsigned int now_time = timeGetTime();
printf("now time %d\n", now_time);
if(now_time > (last_call_time + 10))
{
//call_time_critical_function();
printf("performing time critical logic\n");
for(j=0;j<BUFF_SIZE;j++){
ret = send(sock_fd, a, 1,0) ;
printf("ret %d\n", ret);
last_call_time = timeGetTime();//last time is re initialized
}
}
getch();
return 0;
}
}
Debugging output:
Initialised.
It was okay to create the socket
Error - when connecting 10060
File opened successfully through fopen
write bytes = 10
read bytes =10
last call time 4179968
now time 4179968

Answer 1

Print time and check.
Edit:
Move return outside while loop. Also move getch() outside the while loop.