HRESULT CActiveRequestPool::Remove()
{
HRESULT hr;
BOOL signal = FALSE;
ENTER_CS(this->syncRoot)
ErrorIf(this->requestCount == 0, ERROR_INVALID_OPERATION);
this->requestCount--;
if (NULL != this->drainHandle && 0 == this->requestCount)
{
signal = TRUE;
}
LEAVE_CS(this->syncRoot)
if (signal)
{
SetEvent(this->drainHandle);
}
return S_OK;
Error:
return hr;
}
HRESULT CActiveRequestPool::Remove(CNodeHttpStoredContext* context)
{
HRESULT hr;
BOOL signal = FALSE;
CheckNull(context);
ENTER_CS(this->syncRoot)
this->requests.remove(context);
if (NULL != this->drainHandle && this->requests.empty())
{
signal = TRUE;
}
LEAVE_CS(this->syncRoot)
if (signal)
{
SetEvent(this->drainHandle);
}
return S_OK;
Error:
return hr;
}
HRESULT CFileWatcher::RemoveWatch(CNodeApplication* application)
{
ENTER_CS(this->syncRoot)
WatchedDirectory* directory = this->directories;
WatchedDirectory* previousDirectory = NULL;
while (directory)
{
WatchedFile* file = directory->files;
WatchedFile* previousFile = NULL;
while (file && file->application != application)
{
previousFile = file;
file = file->next;
}
if (file)
{
delete [] file->fileName;
if (previousFile)
{
previousFile->next = file->next;
}
else
{
directory->files = file->next;
}
delete file;
if (!directory->files)
{
delete [] directory->directoryName;
CloseHandle(directory->watchHandle);
if (previousDirectory)
{
previousDirectory->next = directory->next;
}
else
{
this->directories = directory->next;
}
delete directory;
}
break;
}
previousDirectory = directory;
directory = directory->next;
}
LEAVE_CS(this->syncRoot)
return S_OK;
}
static void SNP_sendAsyncCmd(_npiFrame_t *pPkt)
{
// Enter Critical Section.
ENTER_CS();
// Send command.
SEND_MESSAGE(pPkt);
// Exit Critical section
EXIT_CS();
}
HRESULT CActiveRequestPool::Add(CNodeHttpStoredContext* context)
{
HRESULT hr;
CheckNull(context);
ENTER_CS(this->syncRoot)
ErrorIf(this->requests.size() >= CModuleConfiguration::GetMaxConcurrentRequestsPerProcess(context->GetHttpContext()), ERROR_NOT_ENOUGH_QUOTA);
this->requests.push_back(context);
LEAVE_CS(this->syncRoot)
return S_OK;
Error:
return hr;
}
HRESULT CPendingRequestQueue::Push(CNodeHttpStoredContext* context)
{
HRESULT hr;
CheckNull(context);
ENTER_CS(this->syncRoot)
ErrorIf(this->requests.size() >= CModuleConfiguration::GetMaxPendingRequestsPerApplication(context->GetHttpContext()), ERROR_NOT_ENOUGH_QUOTA);
this->requests.push(context);
LEAVE_CS(this->syncRoot)
return S_OK;
Error:
return hr;
}
HRESULT CNodeApplicationManager::Dispatch(IHttpContext* context, IHttpEventProvider* pProvider, CNodeHttpStoredContext** ctx)
{
HRESULT hr;
CNodeApplication* application;
NodeDebugCommand debugCommand;
CheckNull(ctx);
*ctx = NULL;
CheckError(CNodeDebugger::GetDebugCommand(context, this->GetEventProvider(), &debugCommand));
if (ND_KILL == debugCommand)
{
ENTER_CS(this->syncRoot)
CheckError(this->EnsureDebuggedApplicationKilled(context, ctx));
LEAVE_CS(this->syncRoot)
}
static void SNP_sendSynchronousCmd(_npiFrame_t *pReq, uint8_t opcode,
snp_msg_t *pRsp, uint16_t *rspLen)
{
// Enter Critical Section.
ENTER_CS();
npiRetMsg.pMsg = pRsp;
// Send command.
SEND_MESSAGE(pReq);
// Wait for a response from the NP.
SNP_waitForResponse();
// Update Length after response is received
if (rspLen)
{
*rspLen = npiRetMsg.len;
}
// Exit Critical Section
EXIT_CS();
}
HRESULT CFileWatcher::WatchFiles(PCWSTR mainFileName, PCWSTR watchedFiles, FileModifiedCallback callback, CNodeApplicationManager* manager, CNodeApplication* application)
{
HRESULT hr;
WCHAR fileOnly[_MAX_FNAME];
WCHAR ext[_MAX_EXT];
WCHAR* directoryName = NULL;
DWORD fileNameLength;
DWORD fileNameOnlyLength;
DWORD directoryLength;
BOOL unc;
BOOL wildcard;
PWSTR startSubdirectory;
PWSTR startFile;
PWSTR endFile;
WatchedDirectory* directory;
WatchedFile* file;
CheckNull(mainFileName);
CheckNull(watchedFiles);
// create and normalize a copy of directory name, determine if it is UNC share
fileNameLength = wcslen(mainFileName);
ErrorIf(0 != _wsplitpath_s(mainFileName, NULL, 0, NULL, 0, fileOnly, _MAX_FNAME, ext, _MAX_EXT), ERROR_INVALID_PARAMETER);
fileNameOnlyLength = wcslen(fileOnly) + wcslen(ext);
directoryLength = fileNameLength - fileNameOnlyLength;
ErrorIf(NULL == (directoryName = new WCHAR[directoryLength + 8]), ERROR_NOT_ENOUGH_MEMORY); // pessimistic length after normalization with prefix \\?\UNC\
if (fileNameLength > 8 && 0 == memcmp(mainFileName, L"\\\\?\\UNC\\", 8 * sizeof WCHAR))
{
// normalized UNC path
unc = TRUE;
memcpy(directoryName, mainFileName, directoryLength * sizeof WCHAR);
directoryName[directoryLength] = L'\0';
}
else if (fileNameLength > 4 && 0 == memcmp(mainFileName, L"\\\\?\\", 4 * sizeof WCHAR))
{
// normalized local file
unc = FALSE;
memcpy(directoryName, mainFileName, directoryLength * sizeof WCHAR);
directoryName[directoryLength] = L'\0';
}
else if (fileNameLength > 2 && 0 == memcmp(mainFileName, L"\\\\", 2 * sizeof(WCHAR)))
{
// not normalized UNC path
unc = TRUE;
wcscpy(directoryName, L"\\\\?\\UNC\\");
memcpy(directoryName + 8, mainFileName + 2, (directoryLength - 2) * sizeof WCHAR);
directoryName[8 + directoryLength - 2] = L'\0';
}
else
{
// not normalized local file
unc = FALSE;
wcscpy(directoryName, L"\\\\?\\");
memcpy(directoryName + 4, mainFileName, directoryLength * sizeof WCHAR);
directoryName[4 + directoryLength] = L'\0';
}
directoryLength = wcslen(directoryName);
ENTER_CS(this->syncRoot)
// parse watchedFiles and create a file listener for each of the files
startFile = (PWSTR)watchedFiles;
do {
endFile = startSubdirectory = startFile;
wildcard = FALSE;
while (*endFile && *endFile != L';')
{
wildcard |= *endFile == L'*' || *endFile == L'?';
if (*endFile == L'\\')
{
startFile = endFile + 1;
}
endFile++;
}
if (startFile != endFile)
{
hr = this->WatchFile(directoryName, directoryLength, unc, startSubdirectory, startFile, endFile, wildcard);
// ignore files and directories that do not exist instead of failing
if (S_OK != hr && ERROR_FILE_NOT_FOUND != hr)
{
// still under lock remove file watch entries that were just created, then do regular cleanup
this->RemoveWatch(NULL);
CheckError(hr);
}
}
startFile = endFile + 1;
} while(*endFile);
// update temporary entries with application and callback pointers
directory = this->directories;
while (NULL != directory)
{
file = directory->files;
while (NULL != file)
{
if (NULL == file->application)
{
file->application = application;
file->manager = manager;
file->callback = callback;
}
file = file->next;
}
directory = directory->next;
}
LEAVE_CS(this->syncRoot)
delete [] directoryName;
return S_OK;
Error:
if (NULL != directoryName)
{
delete [] directoryName;
directoryName = NULL;
}
return hr;
}
unsigned int CFileWatcher::Worker(void* arg)
{
CFileWatcher* watcher = (CFileWatcher*)arg;
DWORD error;
DWORD bytes;
ULONG_PTR key;
LPOVERLAPPED overlapped;
while (TRUE)
{
error = S_OK;
if (!GetQueuedCompletionStatus(
watcher->completionPort, &bytes, &key, &overlapped, watcher->uncFileSharePollingInterval))
{
error = GetLastError();
}
if (-1L == key) // terminate thread
{
break;
}
else if (S_OK == error) // a change in registered directory detected (local file system)
{
WatchedDirectory* directory = (WatchedDirectory*)key;
ENTER_CS(watcher->syncRoot)
// make sure the directory is still watched
WatchedDirectory* current = watcher->directories;
while (current && current != directory)
current = current->next;
if (current)
{
watcher->ScanDirectory(current, FALSE);
// make sure the directory is still watched - it could have been removed by a recursive call to RemoveWatch
current = watcher->directories;
while (current && current != directory)
current = current->next;
if (current)
{
RtlZeroMemory(¤t->overlapped, sizeof current->overlapped);
ReadDirectoryChangesW(
current->watchHandle,
¤t->info,
sizeof directory->info,
FALSE,
FILE_NOTIFY_CHANGE_LAST_WRITE,
NULL,
¤t->overlapped,
NULL);
}
}
LEAVE_CS(watcher->syncRoot)
}
else // timeout - scan all registered UNC files for changes
{
HRESULT CFileWatcher::RemoveWatch(CNodeApplication* application)
{
ENTER_CS(this->syncRoot)
WatchedDirectory* directory = this->directories;
WatchedDirectory* previousDirectory = NULL;
while (directory)
{
WatchedFile* file = directory->files;
WatchedFile* previousFile = NULL;
while (file)
{
if (file->application == application)
{
WatchedFile* tmpFile = file;
delete [] file->fileName;
if (previousFile)
{
previousFile->next = file->next;
file = file->next;
if (!file)
{
previousDirectory = directory;
directory = directory->next;
}
}
else
{
directory->files = file->next;
file = file->next;
if (!directory->files)
{
delete [] directory->directoryName;
if(directory->watchHandle != NULL)
{
CloseHandle(directory->watchHandle);
directory->watchHandle = NULL;
}
if (previousDirectory)
{
previousDirectory->next = directory->next;
}
else
{
this->directories = directory->next;
}
WatchedDirectory* tmpDirectory = directory;
directory = directory->next;
delete tmpDirectory;
}
}
delete tmpFile;
}
else
{
previousFile = file;
file = file->next;
if (!file)
{
previousDirectory = directory;
directory = directory->next;
}
}
}
}
LEAVE_CS(this->syncRoot)
return S_OK;
}
