【发布时间】:2016-04-14 13:14:28
【问题描述】:
我已经安装了 Windows SDK 7.1 平台工具,并打开了一个名为 Microsoft Windows 7 x64 Debug Build Environment 的终端。现在我想使用cl.exe 命令编译一个C++ 应用程序(名为main.cpp)。编译命令为:
cl main.cpp
然后,它会输出main.obj 和main.exe 文件。但是当我尝试运行main.exe 时,它在begin computing dist 之后和end computing dist. 之前崩溃了,我想我应该将应用程序编译成x64 程序。请问有大神给点建议吗?
main.cpp如下:
#include <cstdio>
#include <cstdlib>
#ifdef _MSC_VER
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
#include <intrin.h>
#include <windows.h>
#else
#include <stdint.h>
#include <sys/time.h>
#include <unistd.h>
#endif
int main(int argc, char **argv) {
int nTrn = 10;
int nTst = 10;
int nDim = 1; // 64 bit
printf("allocate memory for feats.\n");
uint64_t *trn_feat = new uint64_t[nTrn]; // nTrn x nDim
uint64_t *tst_feat = new uint64_t[nTst]; // nTst x nDim
printf("initialize the feats.\n");
for(int i=0; i<nTrn; i++)
trn_feat[i] = (((uint64_t) rand() << 0) & 0x000000000000FFFFull) |
(((uint64_t) rand() << 16) & 0x00000000FFFF0000ull) |
(((uint64_t) rand() << 32) & 0x0000FFFF00000000ull) |
(((uint64_t) rand() << 48) & 0xFFFF000000000000ull);
for(int i=0; i<nTst; i++)
tst_feat[i] = (((uint64_t) rand() << 0) & 0x000000000000FFFFull) |
(((uint64_t) rand() << 16) & 0x00000000FFFF0000ull) |
(((uint64_t) rand() << 32) & 0x0000FFFF00000000ull) |
(((uint64_t) rand() << 48) & 0xFFFF000000000000ull);
printf("allocate memory for dist matrix.\n");
uint64_t *dist = new uint64_t[nTrn*nTst];
#ifdef _MSC_VER
LARGE_INTEGER StartingTime, EndingTime, ElapsedMicroseconds;
LARGE_INTEGER Frequency;
QueryPerformanceFrequency(&Frequency);
QueryPerformanceCounter(&StartingTime);
#else
struct timeval start, end;
long seconds, useconds;
double mtime;
gettimeofday(&start, NULL);
#endif
printf("begin computing dist.\n");
for(int iter=0; iter<100; iter++) {
for(int i=0; i<nTrn; i++) {
for(int j=0; j<nTst; j++) {
uint64_t n = (trn_feat[i] ^ tst_feat[j]);
#ifdef _MSC_VER
dist[i*nTst + j] = __popcnt64(n);
#else
dist[i*nTst + j] = __builtin_popcountll(n);
#endif
}
}
}
printf("end computing dist.\n");
#ifdef _MSC_VER
QueryPerformanceCounter(&EndingTime);
ElapsedMicroseconds.QuadPart = EndingTime.QuadPart - StartingTime.QuadPart;
ElapsedMicroseconds.QuadPart *= 1000000;
ElapsedMicroseconds.QuadPart /= Frequency.QuadPart;
double mtime = (double)ElapsedMicroseconds.QuadPart;
printf("Average time: %.6f nanoseconds\n", (1e6*mtime)/100/(nTrn*nTst));
#else
gettimeofday(&end, NULL);
seconds = end.tv_sec - start.tv_sec;
useconds = end.tv_usec - start.tv_usec;
mtime = ((seconds) * 1000 + useconds/1000.0) + 0.5;
printf("Total elapsed time: %.6f milliseconds\n", mtime);
printf("Average time: %.6f nanoseconds\n", (1e6*mtime)/1000/(nTrn*nTst));
#endif
delete[] trn_feat;
delete[] tst_feat;
delete[] dist;
}
【问题讨论】:
-
那么你的问题是什么?如何指定目标平台?如何修复你的错误?
-
@IInspectable,谢谢!代码中有错误吗?看来
Ubuntu中的代码可以正常运行了。 -
您没有为 Windows 和 Ubuntu 编译相同的代码,那么程序在 Ubuntu 上运行良好的事实如何表明它不包含错误?
-
@IInspectable,在添加Windows代码之前,我可以在Ubuntu中运行正常。
-
嗨,@IInspectable,我已经尝试在 Ubuntu 中再次编译代码,它可以运行正常。你能指出错误在哪里吗?谢谢!