下一个ReadFile/WriteFile代码有问题。 我需要使用复制文件通过使用此功能(是的,最好使用CopyFile,但现在我需要它),但它在读/写循环崩溃。 什么可能是错的?ReadFile/WriteFile crahes
PS C:\用户\用户\文件\ SysLab1 \ DIST \调试\ MinGW的-视窗>克++ --version 克++ EXE下(x86_64-POSIX的sjlj-REV0,通过MinGW的-W64项目内置) 4.8.3
我用下面的代码:
#include <windows.h>
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#define BLOCK_SIZE 1024
uint32_t copy_c(char* source, char* destination) {...}
uint32_t copy_api_readwrite(char* source, char* destination) {
bool result;
HANDLE input = CreateFile(source, GENERIC_READ, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (input!=INVALID_HANDLE_VALUE) {
HANDLE output = CreateFile(destination, GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if(output!=INVALID_HANDLE_VALUE) {
DWORD readed;
char block[BLOCK_SIZE];
while(ReadFile(input, block, BLOCK_SIZE * sizeof(char), &readed, NULL)>0) {
WriteFile(output, block, readed, NULL, NULL);
}
if(GetLastError()==ERROR_HANDLE_EOF) {
result = true;
}
else {
result = false;
}
CloseHandle(output);
}
else {
result = false;
}
CloseHandle(input);
}
else {
result = true;
}
if(result) {
return 0;
}
else {
return GetLastError();
}
return result;
}
uint32_t copy_api(char* source, char* destination) {...}
#define COPY_READWRITE
#ifdef COPY_C
#define COPY copy_c
#else
#ifdef COPY_READWRITE
#define COPY copy_api_readwrite
#else
#ifdef COPY_API
#define COPY copy_api
#endif
#endif
#endif
int main(int argc, char** argv) {
if(argc<3) {
std::cout << "Bad command line arguments\n";
return 1;
}
uint32_t result = COPY(argv[1], argv[2]);
if(result==0) {
std::cout << "Success\n";
return 0;
}
else {
std::cout << "Error : " << result << "\n";
return 2;
}
}
你能更具体地了解“崩溃”吗?你有没有收到任何错误讯息?分段故障? – Chris 2015-02-11 13:54:53