子進程獲取父進程可以通過微軟未公開的一個api實現
NTSTATUS WINAPI NtQueryInformationProcess(
__in HANDLE ProcessHandle,
__in PROCESSINFOCLASS ProcessInformationClass,
__out PVOID ProcessInformation,
__in ULONG ProcessInformationLength,
__out_opt PULONG ReturnLength
);
但是既然未公開,肯定有不公開的理由,這裏打算不用這種方式
我的做法是在 父進程創建子進程的時候,傳入一個參數,這個參數就是自己的進程id。
父進程:
void startModule1()
{
std::stringstream ss;
ss << "module1 "; //注意這裏要有空格,module1就是子進程的 exe 文件名
ss << GetCurrentProcessId();
std::string moduleName = ss.str();
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
// Start the child process.
if( !CreateProcess( NULL, LPSTR(moduleName.c_str()) ,NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi ))
{
return;
}
hd_dwld = pi.dwProcessId;
// Wait until child process exits.
WaitForSingleObject( pi.hProcess, INFINITE );
// Close process and thread handles.
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
handleStop();
}
子進程:
int WINAPI WinMain(
HINSTANCE hInstance, // handle to current instance
HINSTANCE hPrevInstance, // handle to previous instance
LPSTR lpCmdLine, // command line
int nCmdShow // show state
)
{
DWORD pid;
char char_main_id [16];
sprintf_s(char_main_id , "%s" , &lpCmdLine[0]);
pid = atoi(char_main_id);
...
}
有了 pid,就什麼都好說了。。