int _tmain(int argc, _TCHAR* argv[])
{
// Read(), Write()
_ASSERTE(create_very_big_file(L"big.txt", 5120)); // 5120mb == 5GB
StopWatch sw;
sw.Start();
_ASSERTE(file_copy_using_read_write(L"big.txt", L"big2.txt"));
sw.Stop();
print("[info] Read_Write : time elapsed = %f\n", sw.GetDurationSecond());
// Memory Mapeed IO
StopWatch sw2;
sw2.Start();
_ASSERTE(USER_file_copy_using_memory_map(L"big.txt", L"big3.txt"));
sw2.Stop();
print("[info] Memory Mapped : time elapsed = %f\n", sw2.GetDurationSecond());
DeleteFileW(L"big.txt");
DeleteFileW(L"big2.txt");
DeleteFileW(L"big3.txt");
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
uint32_t goalsize = 6144; // 6GB
_ASSERTE(create_very_big_file(L"big.txt",goalsize));//목표크기 6GB만큼 파일 생성
StopWatch sw;
sw.Start();
_ASSERTE(file_copy_using_read_write(L"big.txt", L"big2.txt"));
sw.Stop();
print("info] (Read Write) time elapsed = %f", sw.GetDurationSecond());
LARGE_INTEGER _Filesize;
_Filesize.QuadPart = (LONGLONG)(1024*1024)*(LONGLONG)goalsize;//파일의 크기 6GB 설정하기위해 LARGE_INTEGER
DWORD bufS = 4096; // read.write에서 buf가 4096이므로 4096설정
PUCHAR buf = (PUCHAR)malloc(bufS);
LARGE_INTEGER _Offset;
_Offset.QuadPart = 0; //파일을 옮겨주는 계산을 하는데 사용한다.
StopWatch sw2;
sw2.Start();
FileIoHelper FileHelp;
FileHelp.FIOpenForRead(L"big.txt");
FileHelp.FIOCreateFile(L"big3.txt", _Filesize);
while(_Filesize.QuadPart > _Offset.QuadPart)
{
if((_Filesize.QuadPart - _Offset.QuadPart) > (LONGLONG)bufS)
bufS = 4096;
else
bufS = (DWORD)(_Filesize.QuadPart - _Offset.QuadPart);
FileHelp.FIOReadFromFile(_Offset, bufS, buf);
FileHelp.FIOWriteToFile(_Offset, bufS, buf);
_Offset.QuadPart += (LONGLONG)bufS;
}
sw2.Stop();
print("info] (Memory Map) time elapsed = %f", sw2.GetDurationSecond());
return 0;
}
int main(){
StopWatch sw = StopWatch();
create_very_big_file(L"make.bin", 4096);
//create_very_big_file 함수 내부에서 LARGE_INTEGER 다룰때 LL 추가
sw.Start();
LARGE_INTEGER file_size_read = { 0 };
LARGE_INTEGER file_offset = { 0 };
unsigned char buf[BUF_SIZE];
FileIoHelper Fi_read= FileIoHelper();
FileIoHelper Fi_write = FileIoHelper();
Fi_read.FIOpenForRead(L"make.bin");
file_size_read.QuadPart = (1024 * 1024) * 4096LL;
Fi_write.FIOCreateFile(L"copy.bin", file_size_read);
while (DT_SUCCEEDED(Fi_read.FIOReadFromFile(file_offset, BUF_SIZE, buf))){
Fi_write.FIOWriteToFile(file_offset, BUF_SIZE, buf);
file_offset.QuadPart += BUF_SIZE;
//printf("%d", file_offset.QuadPart);
}
Fi_read.FIOClose();
Fi_write.FIOClose();
sw.Stop();
printf("using memory map via FileIoHelperClass %f , bufsize = %d \n\n", sw.GetDurationSecond(),BUF_SIZE);
sw.Start();
file_copy_using_read_write(L"make.bin", L"copy.bin2");
sw.Stop();
printf("using read write %f\n", sw.GetDurationSecond());
system("pause");
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
_ASSERTE(create_very_big_file(L"big.txt", 1));
StopWatch sw2;
sw2.Start();
_ASSERTE(file_copy_using_memory_map(L"big.txt", L"big3.txt"));
sw2.Stop();
print("info] time elapsed = %f", sw2.GetDurationSecond());
StopWatch sw;
sw.Start();
_ASSERTE(file_copy_using_read_write(L"big.txt", L"big2.txt"));
sw.Stop();
print("info] time elapsed = %f", sw.GetDurationSecond());
return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{
/*
_ASSERTE(create_very_big_file(L"big.txt", 5000));
StopWatch sw2;
sw2.Start();
_ASSERTE(file_copy_using_memory_map(L"big.txt", L"big3.txt"));
sw2.Stop();
print("info] time elapsed = %f", sw2.GetDurationSecond());
StopWatch sw;
sw.Start();
_ASSERTE(file_copy_using_read_write(L"big.txt", L"big4.txt"));
sw.Stop();
print("info] time elapsed = %f", sw.GetDurationSecond());
*/
FileIoHelper Helper;
uint64_t size=5000;
LARGE_INTEGER file_size;
LARGE_INTEGER offset;
offset.QuadPart = 0;
DWORD bufsize = 2048*1024*1024;
PUCHAR buf = (PUCHAR)malloc(bufsize);
file_size.QuadPart = (1024 * 1024) * size;
_ASSERTE(create_very_big_file(L"big.txt", size));
StopWatch sw2;
sw2.Start();
Helper.FIOpenForRead(L"big.txt");
Helper.FIOCreateFile(L"big2.txt", file_size);
while (offset.QuadPart < file_size.QuadPart) {
if ((file_size.QuadPart - offset.QuadPart) >(LONGLONG)bufsize)
{
bufsize = 2048*1024*1024;
}
else {
bufsize = (DWORD)(file_size.QuadPart - offset.QuadPart);
}
Helper.FIOReadFromFile(offset, bufsize, buf);
Helper.FIOWriteToFile(offset, bufsize, buf);
offset.QuadPart += (LONGLONG)bufsize;
}
sw2.Stop();
print("info] time elapsed = %f", sw2.GetDurationSecond());
StopWatch sw;
sw.Start();
_ASSERTE(file_copy_using_read_write(L"big.txt", L"big3.txt"));
sw.Stop();
print("info] time elapsed = %f", sw.GetDurationSecond());
_getwch();
return 0;
}