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1 #include "iostream" 2 #include "windows.h" 3 #include "cstring" 4 using namespace std; 5 6 static LPCTSTR g_szContinueEvent="w2kdg.EventDemo.event.Continue"; 7 8 BOOL CreateChild(){ 9 TCHAR szFilename[MAX_PATH]; 10 GetModuleFileName(NULL,szFilename,MAX_PATH); 11 12 TCHAR szCmdLine[MAX_PATH]; 13 sprintf_s(szCmdLine,"\"%s\" child",szFilename); 14 15 STARTUPINFO si; 16 ZeroMemory(reinterpret_cast<void*>(&si),sizeof(si)); 17 si.cb=sizeof(si); 18 19 PROCESS_INFORMATION pi; 20 21 BOOL bCreateOK=CreateProcess( 22 szFilename, 23 szCmdLine, 24 NULL, 25 NULL, 26 FALSE, 27 0, 28 NULL, 29 NULL, 30 &si, 31 &pi 32 33 ); 34 35 if(bCreateOK){ 36 CloseHandle(pi.hProcess); 37 CloseHandle(pi.hThread); 38 } 39 40 return (bCreateOK); 41 42 } 43 44 void WaitForChild(){ 45 HANDLE hEventContinue=CreateEvent( 46 NULL, 47 TRUE, 48 FALSE, 49 g_szContinueEvent 50 ); 51 52 if(hEventContinue!=NULL){ 53 printf("Event creates.\n"); 54 if(CreateChild()){ 55 printf("Child process created.\n"); 56 printf("Parent process waiting on child process.\n"); 57 WaitForSingleObject(hEventContinue,INFINITE); 58 printf("Parent process received the event signaling from child process.\n"); 59 } 60 61 CloseHandle(hEventContinue); 62 } 63 64 } 65 66 void SignalParent(){ 67 HANDLE hEventContinue=OpenEvent( 68 EVENT_MODIFY_STATE, 69 FALSE, 70 g_szContinueEvent 71 ); 72 73 if(hEventContinue!=NULL){ 74 SetEvent(hEventContinue); 75 printf("Child process begining...\n"); 76 } 77 78 CloseHandle(hEventContinue); 79 } 80 81 int main(int argc,char *argv[]){ 82 if(argc>1&&strcmp(argv[1],"child")==0){ 83 SignalParent(); 84 } 85 else{ 86 87 WaitForChild(); 88 printf("Parent process released.\n"); 89 } 90 getchar(); 91 return 0; 92 93 }
windows系统调用 利用事件对象实现进程通信,布布扣,bubuko.com
标签:style class blog code tar color
原文地址:http://www.cnblogs.com/593213556wuyubao/p/3786414.html