进程快照导致虚拟内存耗尽 做了一个监控程序来监测其他程序的运行状态,每隔一段时间用createtoolhelp32snapshot做进程快照然后遍历查找,每次遍历查找完后都用CloseHandle关闭快照,仍然出现虚拟内存耗尽的现象,用另外一个函数Closetoolhelp32snapshot函数却又没有定义,请教一下各位该怎么做。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 下面是关键代码: PROCESSENTRY32 processEntry = {0}; MODULEENTRY32 me32 = {0}; HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); if(hProcessSnap == INVALID_HANDLE_VALUE)return result; processEntry.dwSize = sizeof(PROCESSENTRY32); me32.dwSize = sizeof(MODULEENTRY32); BOOL bRet = Process32First(hProcessSnap, &processEntry); while(bRet) { HANDLE hModuleSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,processEntry.th32ProcessID); if(p.processname.Compare(processEntry.szExeFile) == 0) { result = TRUE; } bRet = Process32Next(hProcessSnap,&processEntry); CloseHandle(hModuleSnap); //CloseToolhelp32Snapshot(hModuleSnap); } CloseHandle(hProcessSnap); 我把HANDLE hModuleSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,processEntry.th32ProcessID);和后面的CloseHandle(hModuleSnap);注释掉后就没有出现虚拟内存耗尽的现象了。 MSDN上有很完整的啊,帮你贴出来,MSDN上的,这个应该没的你说的问题#include <windows.h>#include <tlhelp32.h>#include <tchar.h>// Forward declarations:BOOL GetProcessList( );//枚举进程BOOL ListProcessModules( DWORD dwPID );//枚举模块BOOL ListProcessThreads( DWORD dwOwnerPID );//线程void printError( TCHAR* msg );int main( void ){ GetProcessList( ); return 0;}BOOL GetProcessList( ){ HANDLE hProcessSnap; HANDLE hProcess; PROCESSENTRY32 pe32; DWORD dwPriorityClass; // Take a snapshot of all processes in the system. hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 ); if( hProcessSnap == INVALID_HANDLE_VALUE ) { printError( TEXT("CreateToolhelp32Snapshot (of processes)") ); return( FALSE ); } // Set the size of the structure before using it. pe32.dwSize = sizeof( PROCESSENTRY32 ); // Retrieve information about the first process, // and exit if unsuccessful if( !Process32First( hProcessSnap, &pe32 ) ) { printError( TEXT("Process32First") ); // show cause of failure CloseHandle( hProcessSnap ); // clean the snapshot object return( FALSE ); } // Now walk the snapshot of processes, and // display information about each process in turn do { _tprintf( TEXT("\n\n=====================================================" )); _tprintf( TEXT("\nPROCESS NAME: %s"), pe32.szExeFile ); _tprintf( TEXT("\n-------------------------------------------------------" )); // Retrieve the priority class. dwPriorityClass = 0; hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, pe32.th32ProcessID ); if( hProcess == NULL ) printError( TEXT("OpenProcess") ); else { dwPriorityClass = GetPriorityClass( hProcess ); if( !dwPriorityClass ) printError( TEXT("GetPriorityClass") ); CloseHandle( hProcess ); } _tprintf( TEXT("\n Process ID = 0x%08X"), pe32.th32ProcessID ); _tprintf( TEXT("\n Thread count = %d"), pe32.cntThreads ); _tprintf( TEXT("\n Parent process ID = 0x%08X"), pe32.th32ParentProcessID ); _tprintf( TEXT("\n Priority base = %d"), pe32.pcPriClassBase ); if( dwPriorityClass ) _tprintf( TEXT("\n Priority class = %d"), dwPriorityClass ); // List the modules and threads associated with this process ListProcessModules( pe32.th32ProcessID ); ListProcessThreads( pe32.th32ProcessID ); } while( Process32Next( hProcessSnap, &pe32 ) ); CloseHandle( hProcessSnap ); return( TRUE );}BOOL ListProcessModules( DWORD dwPID ){ HANDLE hModuleSnap = INVALID_HANDLE_VALUE; MODULEENTRY32 me32; // Take a snapshot of all modules in the specified process. hModuleSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwPID ); if( hModuleSnap == INVALID_HANDLE_VALUE ) { printError( TEXT("CreateToolhelp32Snapshot (of modules)") ); return( FALSE ); } // Set the size of the structure before using it. me32.dwSize = sizeof( MODULEENTRY32 ); // Retrieve information about the first module, // and exit if unsuccessful if( !Module32First( hModuleSnap, &me32 ) ) { printError( TEXT("Module32First") ); // show cause of failure CloseHandle( hModuleSnap ); // clean the snapshot object return( FALSE ); } // Now walk the module list of the process, // and display information about each module do { _tprintf( TEXT("\n\n MODULE NAME: %s"), me32.szModule ); _tprintf( TEXT("\n Executable = %s"), me32.szExePath ); _tprintf( TEXT("\n Process ID = 0x%08X"), me32.th32ProcessID ); _tprintf( TEXT("\n Ref count (g) = 0x%04X"), me32.GlblcntUsage ); _tprintf( TEXT("\n Ref count (p) = 0x%04X"), me32.ProccntUsage ); _tprintf( TEXT("\n Base address = 0x%08X"), (DWORD) me32.modBaseAddr ); _tprintf( TEXT("\n Base size = %d"), me32.modBaseSize ); } while( Module32Next( hModuleSnap, &me32 ) ); CloseHandle( hModuleSnap ); return( TRUE );}BOOL ListProcessThreads( DWORD dwOwnerPID ) { HANDLE hThreadSnap = INVALID_HANDLE_VALUE; THREADENTRY32 te32; // Take a snapshot of all running threads hThreadSnap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 ); if( hThreadSnap == INVALID_HANDLE_VALUE ) return( FALSE ); // Fill in the size of the structure before using it. te32.dwSize = sizeof(THREADENTRY32); // Retrieve information about the first thread, // and exit if unsuccessful if( !Thread32First( hThreadSnap, &te32 ) ) { printError( TEXT("Thread32First") ); // show cause of failure CloseHandle( hThreadSnap ); // clean the snapshot object return( FALSE ); } // Now walk the thread list of the system, // and display information about each thread // associated with the specified process do { if( te32.th32OwnerProcessID == dwOwnerPID ) { _tprintf( TEXT("\n\n THREAD ID = 0x%08X"), te32.th32ThreadID ); _tprintf( TEXT("\n Base priority = %d"), te32.tpBasePri ); _tprintf( TEXT("\n Delta priority = %d"), te32.tpDeltaPri ); _tprintf( TEXT("\n")); } } while( Thread32Next(hThreadSnap, &te32 ) ); CloseHandle( hThreadSnap ); return( TRUE );}void printError( TCHAR* msg ){ DWORD eNum; TCHAR sysMsg[256]; TCHAR* p; eNum = GetLastError( ); FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, eNum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language sysMsg, 256, NULL ); // Trim the end of the line and terminate it with a null p = sysMsg; while( ( *p > 31 ) || ( *p == 9 ) ) ++p; do { *p-- = 0; } while( ( p >= sysMsg ) && ( ( *p == '.' ) || ( *p < 33 ) ) ); // Display the message _tprintf( TEXT("\n WARNING: %s failed with error %d (%s)"), msg, eNum, sysMsg );} 如何让程序一开始运行时就打开上次关闭的文件? 求ZgChart源码 VC2005 MFC异常 从出生日看你的基本性格 关于html help workshop制作 chm文件的问题 用指定的程序打开某一类型的文件在编程中是怎么实现的(比如把mp3文件的默认打开方式设定为超级解霸,当双击某个mp3文件的时候就能自动的 allenhai1980(学术人生。。。) !!! 高分求解:在VC++中,怎样向SQL Server 7.0的存储过程传送二进制流? 请问如何注册组件 关于解析纯真IP数据库的问题 关于进程的问题! 一个纠结了我好多的天的GetProcAddress返回值问题!求助高手!!!
MODULEENTRY32 me32 = {0}; HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if(hProcessSnap == INVALID_HANDLE_VALUE)return result;
processEntry.dwSize = sizeof(PROCESSENTRY32);
me32.dwSize = sizeof(MODULEENTRY32);
BOOL bRet = Process32First(hProcessSnap, &processEntry); while(bRet)
{
HANDLE hModuleSnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,processEntry.th32ProcessID);
if(p.processname.Compare(processEntry.szExeFile) == 0)
{
result = TRUE;
}
bRet = Process32Next(hProcessSnap,&processEntry);
CloseHandle(hModuleSnap);
//CloseToolhelp32Snapshot(hModuleSnap);
}
CloseHandle(hProcessSnap);
#include <tlhelp32.h>
#include <tchar.h>// Forward declarations:
BOOL GetProcessList( );//枚举进程
BOOL ListProcessModules( DWORD dwPID );//枚举模块
BOOL ListProcessThreads( DWORD dwOwnerPID );//线程
void printError( TCHAR* msg );int main( void )
{
GetProcessList( );
return 0;
}BOOL GetProcessList( )
{
HANDLE hProcessSnap;
HANDLE hProcess;
PROCESSENTRY32 pe32;
DWORD dwPriorityClass; // Take a snapshot of all processes in the system.
hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
if( hProcessSnap == INVALID_HANDLE_VALUE )
{
printError( TEXT("CreateToolhelp32Snapshot (of processes)") );
return( FALSE );
} // Set the size of the structure before using it.
pe32.dwSize = sizeof( PROCESSENTRY32 ); // Retrieve information about the first process,
// and exit if unsuccessful
if( !Process32First( hProcessSnap, &pe32 ) )
{
printError( TEXT("Process32First") ); // show cause of failure
CloseHandle( hProcessSnap ); // clean the snapshot object
return( FALSE );
} // Now walk the snapshot of processes, and
// display information about each process in turn
do
{
_tprintf( TEXT("\n\n=====================================================" ));
_tprintf( TEXT("\nPROCESS NAME: %s"), pe32.szExeFile );
_tprintf( TEXT("\n-------------------------------------------------------" )); // Retrieve the priority class.
dwPriorityClass = 0;
hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, pe32.th32ProcessID );
if( hProcess == NULL )
printError( TEXT("OpenProcess") );
else
{
dwPriorityClass = GetPriorityClass( hProcess );
if( !dwPriorityClass )
printError( TEXT("GetPriorityClass") );
CloseHandle( hProcess );
} _tprintf( TEXT("\n Process ID = 0x%08X"), pe32.th32ProcessID );
_tprintf( TEXT("\n Thread count = %d"), pe32.cntThreads );
_tprintf( TEXT("\n Parent process ID = 0x%08X"), pe32.th32ParentProcessID );
_tprintf( TEXT("\n Priority base = %d"), pe32.pcPriClassBase );
if( dwPriorityClass )
_tprintf( TEXT("\n Priority class = %d"), dwPriorityClass ); // List the modules and threads associated with this process
ListProcessModules( pe32.th32ProcessID );
ListProcessThreads( pe32.th32ProcessID ); } while( Process32Next( hProcessSnap, &pe32 ) ); CloseHandle( hProcessSnap );
return( TRUE );
}
BOOL ListProcessModules( DWORD dwPID )
{
HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
MODULEENTRY32 me32; // Take a snapshot of all modules in the specified process.
hModuleSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwPID );
if( hModuleSnap == INVALID_HANDLE_VALUE )
{
printError( TEXT("CreateToolhelp32Snapshot (of modules)") );
return( FALSE );
} // Set the size of the structure before using it.
me32.dwSize = sizeof( MODULEENTRY32 ); // Retrieve information about the first module,
// and exit if unsuccessful
if( !Module32First( hModuleSnap, &me32 ) )
{
printError( TEXT("Module32First") ); // show cause of failure
CloseHandle( hModuleSnap ); // clean the snapshot object
return( FALSE );
} // Now walk the module list of the process,
// and display information about each module
do
{
_tprintf( TEXT("\n\n MODULE NAME: %s"), me32.szModule );
_tprintf( TEXT("\n Executable = %s"), me32.szExePath );
_tprintf( TEXT("\n Process ID = 0x%08X"), me32.th32ProcessID );
_tprintf( TEXT("\n Ref count (g) = 0x%04X"), me32.GlblcntUsage );
_tprintf( TEXT("\n Ref count (p) = 0x%04X"), me32.ProccntUsage );
_tprintf( TEXT("\n Base address = 0x%08X"), (DWORD) me32.modBaseAddr );
_tprintf( TEXT("\n Base size = %d"), me32.modBaseSize ); } while( Module32Next( hModuleSnap, &me32 ) ); CloseHandle( hModuleSnap );
return( TRUE );
}BOOL ListProcessThreads( DWORD dwOwnerPID )
{
HANDLE hThreadSnap = INVALID_HANDLE_VALUE;
THREADENTRY32 te32;
// Take a snapshot of all running threads
hThreadSnap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
if( hThreadSnap == INVALID_HANDLE_VALUE )
return( FALSE );
// Fill in the size of the structure before using it.
te32.dwSize = sizeof(THREADENTRY32);
// Retrieve information about the first thread,
// and exit if unsuccessful
if( !Thread32First( hThreadSnap, &te32 ) )
{
printError( TEXT("Thread32First") ); // show cause of failure
CloseHandle( hThreadSnap ); // clean the snapshot object
return( FALSE );
} // Now walk the thread list of the system,
// and display information about each thread
// associated with the specified process
do
{
if( te32.th32OwnerProcessID == dwOwnerPID )
{
_tprintf( TEXT("\n\n THREAD ID = 0x%08X"), te32.th32ThreadID );
_tprintf( TEXT("\n Base priority = %d"), te32.tpBasePri );
_tprintf( TEXT("\n Delta priority = %d"), te32.tpDeltaPri );
_tprintf( TEXT("\n"));
}
} while( Thread32Next(hThreadSnap, &te32 ) ); CloseHandle( hThreadSnap );
return( TRUE );
}void printError( TCHAR* msg )
{
DWORD eNum;
TCHAR sysMsg[256];
TCHAR* p; eNum = GetLastError( );
FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, eNum,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
sysMsg, 256, NULL ); // Trim the end of the line and terminate it with a null
p = sysMsg;
while( ( *p > 31 ) || ( *p == 9 ) )
++p;
do { *p-- = 0; } while( ( p >= sysMsg ) &&
( ( *p == '.' ) || ( *p < 33 ) ) ); // Display the message
_tprintf( TEXT("\n WARNING: %s failed with error %d (%s)"), msg, eNum, sysMsg );
}