IDebugProgramProvider2::WatchForProviderEvents
允许进程收到端口事件的通知。
语法
int WatchForProviderEvents(
enum_PROVIDER_FLAGS Flags,
IDebugDefaultPort2 pPort,
AD_PROCESS_ID ProcessId,
CONST_GUID_ARRAY EngineFilter,
ref Guid guidLaunchingEngine,
IDebugPortNotify2 pEventCallback
);
参数
Flags
[in]来自PROVIDER_FLAGS枚举的标志的组合。 此调用的典型标志如下：
| 标记 | 说明 |
|---|---|
PFLAG_REMOTE_PORT |
调用方正在远程计算机上运行。 |
PFLAG_DEBUGGEE |
调用方当前正在调试（为每个节点返回有关封送的其他信息）。 |
PFLAG_ATTACHED_TO_DEBUGGEE |
调用方已附加到调试器，但未启动。 |
PFLAG_REASON_WATCH |
调用方希望监视事件。 如果未设置此标志。 然后，将删除回调事件，并且调用方不再接收通知。 |
pPort
[in]调用进程正在运行的端口。
processId
[in]包含 有问题的程序的进程的 ID 的AD_PROCESS_ID 结构。
EngineFilter
[in]与进程关联的调试引擎的 GUID 数组。
guidLaunchingEngine
[in]启动此过程的调试引擎的 GUID（如果有）。
pEventCallback
[in]接收 事件通知的 IDebugPortNotify2 对象。
返回值
如果成功，则返回 S_OK；否则，返回错误代码。
备注
当调用方想要删除使用以前对此方法的调用建立的事件处理程序时，调用方传递的参数与第一次相同的参数，但会离开 PFLAG_REASON_WATCH 标志。
示例
以下示例演示如何为公开 IDebugProgramProvider2 接口的 CDebugEngine 对象实现此方法。
STDMETHODIMP CDebugEngine::WatchForProviderEvents(
PROVIDER_FLAGS Flags,
IDebugDefaultPort2 *pPort,
AD_PROCESS_ID processId,
CONST_GUID_ARRAY EngineFilter,
REFGUID guidLaunchingEngine,
IDebugPortNotify2 *pPortNotify)
{
HRESULT hRes = E_FAIL;
if (EVAL(pPort != NULL) && EVAL(pPortNotify != NULL))
{
// We will only watch/send events about the process if the debugger
// is actually debugging the process, and only if this is an attach or a LoRIE launch
if (IsFlagSet(Flags, PFLAG_DEBUGGEE) &&
guidLaunchingEngine == GUID_NULL &&
processId.ProcessIdType == AD_PROCESS_ID_SYSTEM)
{
// We don't support WatchForProviderEvents when in interop mode
if (m_fInterop)
{
ASSERT(!"Shouldn't ever be called in interop mode");
hRes = E_FAIL;
}
else
{
if (IsFlagSet(Flags, PFLAG_REASON_WATCH))
{
// QI to get IDebugEventCallback2 which is required.
CComQIPtr<IDebugEventCallback2> pCallback(pPortNotify);
ASSERT(pCallback != NULL);
if ( pCallback != NULL )
{
// Register the callback
hRes = this->InitDebugSession(pCallback);
if ( S_OK == hRes )
{
// Get the IDebugProcess2 from the port and call AttachImpl
CComPtr<IDebugProcess2> spProcess;
hRes = pPort->GetProcess(processId, &spProcess);
if (HREVAL(S_OK, hRes))
{
hRes = AttachImpl(spProcess, NULL, NULL, processId.ProcessId.dwProcessId, ATTACH_REASON_USER, NULL);
if ( FAILED(hRes) && (!m_pPidList || 0 == m_pPidList->GetCount()) )
this->Cleanup();
}
}
else
this->Cleanup();
}
else
hRes = E_FAIL;
}
else
{
// Detach will be done by SDM calling on programs directly if there are managed programs.
// This handling is the case where no managed code ever ran.
if ( this->IsProcessBeingDebugged(processId.ProcessId.dwProcessId) )
{
ProgramList *pProgList = this->GetProgramListCopy();
if ( EVAL(pProgList) )
{
if ( pProgList->GetCount() == 0)
{
CComPtr<ICorDebugProcess> pCorProcess;
hRes = this->GetCorProcess(processId.ProcessId.dwProcessId, &pCorProcess);
if (HREVAL(S_OK, hRes) )
{
hRes = pCorProcess->Stop(INFINITE);
if ( HREVAL(S_OK, hRes) )
hRes = pCorProcess->Detach();
}
// Tell the engine that it should unregister this process from com+
this->UnregisterProcess(processId.ProcessId.dwProcessId);
// If there are no more pids left then cleanup everything.
if ( 0 == m_pPidList->GetCount() )
this->Cleanup();
}
// This is needed for cases where the SDM has not yet received program create
// by the time that we need to detach (example: the managed attach succeeds,
// but some other attach step fails).
else
{
PROGNODE *pProgNode = NULL;
while ( pProgNode = pProgList->Next(pProgNode) )
{
CDebugProgram * pProgram = ((CDebugProgram *)pProgNode->data);
hRes = pProgram->Detach();
}
}
delete pProgList;
}
}
else
hRes = S_OK;
}
}
}
else
{
hRes = S_FALSE;
}
}
else
{
hRes = E_INVALIDARG;
}
return hRes;
}