我对此进行了测试..它有效..首先运行C 代码。它将创建 一个内存映射。然后运行python 代码。它将写入地图。C 代码将读取地图并打印写入其中的内容。
我知道这段代码是错误的，因为我没有正确地序列化数据（也就是先将文件大小写到文件中，然后再将数据写到文件中，等等。）但是……这..仅此而已。
蟒蛇：
import mmap
shm = mmap.mmap(0, 512, "Local\\Test") #You should "open" the memory map file instead of attempting to create it..
if shm:
shm.write(bytes("5", 'UTF-8'));
shm.write(bytes("Hello", 'UTF-8'))
print("GOOD")
C ++：
#include <windows.h>
#include <cstring>
#include <cstdbool>
#include <iostream>
typedef struct
{
void* hFileMap;
void* pData;
char MapName[256];
size_t Size;
} SharedMemory;
bool CreateMemoryMap(SharedMemory* shm)
{
if ((shm->hFileMap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, shm->Size, shm->MapName)) == NULL)
{
return false;
}
if ((shm->pData = MapViewOfFile(shm->hFileMap, FILE_MAP_ALL_ACCESS, 0, 0, shm->Size)) == NULL)
{
CloseHandle(shm->hFileMap);
return false;
}
return true;
}
bool FreeMemoryMap(SharedMemory* shm)
{
if (shm && shm->hFileMap)
{
if (shm->pData)
{
UnmapViewOfFile(shm->pData);
}
if (shm->hFileMap)
{
CloseHandle(shm->hFileMap);
}
return true;
}
return false;
}
int main()
{
SharedMemory shm = {0};
shm.Size = 512;
sprintf(shm.MapName, "Local\\Test");
if (CreateMemoryMap(&shm))
{
char* ptr = (char*)shm.pData;
memset(ptr, 0, shm.Size);
while (ptr && (*ptr == 0))
{
Sleep(100);
}
int size = (int)*ptr;
ptr += sizeof(char);
int i = 0;
for (; i < size; ++i)
{
std::cout<<ptr[i];
}
FreeMemoryMap(&shm);
}
}
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