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-rw-r--r--unix/tclUnixNotfy.c812
1 files changed, 411 insertions, 401 deletions
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index e7ea7a1..1457890 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -19,14 +19,6 @@
#include <signal.h>
/*
- * This code does deep stub magic to allow replacement of the notifier at
- * runtime.
- */
-
-extern TclStubs tclStubs;
-extern Tcl_NotifierProcs tclOriginalNotifier;
-
-/*
* This structure is used to keep track of the notifier info for a registered
* file.
*/
@@ -261,9 +253,10 @@ extern unsigned char __stdcall ResetEvent(void *);
extern unsigned char __stdcall TranslateMessage(const MSG *);
/*
- * Threaded-cygwin specific functions in this file:
+ * Threaded-cygwin specific constants and functions in this file:
*/
+static const WCHAR NotfyClassName[] = L"TclNotifier";
static DWORD __stdcall NotifierProc(void *hwnd, unsigned int message,
void *wParam, void *lParam);
#endif /* TCL_THREADS && __CYGWIN__ */
@@ -331,56 +324,59 @@ StartNotifierThread(const char *proc)
ClientData
Tcl_InitNotifier(void)
{
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+ if (tclNotifierHooks.initNotifierProc) {
+ return tclNotifierHooks.initNotifierProc();
+ } else {
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
#ifdef TCL_THREADS
- tsdPtr->eventReady = 0;
+ tsdPtr->eventReady = 0;
- /*
- * Initialize thread specific condition variable for this thread.
- */
- if (tsdPtr->waitCVinitialized == 0) {
+ /*
+ * Initialize thread specific condition variable for this thread.
+ */
+ if (tsdPtr->waitCVinitialized == 0) {
#ifdef __CYGWIN__
- WNDCLASS class;
-
- class.style = 0;
- class.cbClsExtra = 0;
- class.cbWndExtra = 0;
- class.hInstance = TclWinGetTclInstance();
- class.hbrBackground = NULL;
- class.lpszMenuName = NULL;
- class.lpszClassName = L"TclNotifier";
- class.lpfnWndProc = NotifierProc;
- class.hIcon = NULL;
- class.hCursor = NULL;
-
- RegisterClassW(&class);
- tsdPtr->hwnd = CreateWindowExW(NULL, class.lpszClassName,
- class.lpszClassName, 0, 0, 0, 0, 0, NULL, NULL,
- TclWinGetTclInstance(), NULL);
- tsdPtr->event = CreateEventW(NULL, 1 /* manual */,
- 0 /* !signaled */, NULL);
+ WNDCLASS class;
+
+ class.style = 0;
+ class.cbClsExtra = 0;
+ class.cbWndExtra = 0;
+ class.hInstance = TclWinGetTclInstance();
+ class.hbrBackground = NULL;
+ class.lpszMenuName = NULL;
+ class.lpszClassName = NotfyClassName;
+ class.lpfnWndProc = NotifierProc;
+ class.hIcon = NULL;
+ class.hCursor = NULL;
+
+ RegisterClassW(&class);
+ tsdPtr->hwnd = CreateWindowExW(NULL, class.lpszClassName,
+ class.lpszClassName, 0, 0, 0, 0, 0, NULL, NULL,
+ TclWinGetTclInstance(), NULL);
+ tsdPtr->event = CreateEventW(NULL, 1 /* manual */,
+ 0 /* !signaled */, NULL);
#else
- pthread_cond_init(&tsdPtr->waitCV, NULL);
+ pthread_cond_init(&tsdPtr->waitCV, NULL);
#endif /* __CYGWIN__ */
- tsdPtr->waitCVinitialized = 1;
- }
+ tsdPtr->waitCVinitialized = 1;
+ }
- pthread_mutex_lock(&notifierInitMutex);
+ pthread_mutex_lock(&notifierInitMutex);
#if defined(HAVE_PTHREAD_ATFORK)
- /*
- * Install pthread_atfork handlers to clean up the notifier in the
- * child of a fork.
- */
+ /*
+ * Install pthread_atfork handlers to clean up the notifier in the
+ * child of a fork.
+ */
- if (!atForkInit) {
- int result = pthread_atfork(AtForkPrepare, AtForkParent, AtForkChild);
+ if (!atForkInit) {
+ int result = pthread_atfork(AtForkPrepare, AtForkParent, AtForkChild);
- if (result) {
- Tcl_Panic("Tcl_InitNotifier: pthread_atfork failed");
+ if (result) {
+ Tcl_Panic("Tcl_InitNotifier: pthread_atfork failed");
+ }
+ atForkInit = 1;
}
- atForkInit = 1;
- }
#endif /* HAVE_PTHREAD_ATFORK */
notifierCount++;
@@ -388,7 +384,8 @@ Tcl_InitNotifier(void)
pthread_mutex_unlock(&notifierInitMutex);
#endif /* TCL_THREADS */
- return (ClientData) tsdPtr;
+ return tsdPtr;
+ }
}
/*
@@ -413,56 +410,61 @@ void
Tcl_FinalizeNotifier(
ClientData clientData) /* Not used. */
{
+ if (tclNotifierHooks.finalizeNotifierProc) {
+ tclNotifierHooks.finalizeNotifierProc(clientData);
+ return;
+ } else {
#ifdef TCL_THREADS
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- pthread_mutex_lock(&notifierInitMutex);
- notifierCount--;
+ pthread_mutex_lock(&notifierInitMutex);
+ notifierCount--;
- /*
- * If this is the last thread to use the notifier, close the notifier
- * pipe and wait for the background thread to terminate.
- */
+ /*
+ * If this is the last thread to use the notifier, close the notifier
+ * pipe and wait for the background thread to terminate.
+ */
- if (notifierCount == 0) {
+ if (notifierCount == 0) {
- if (triggerPipe != -1) {
- if (write(triggerPipe, "q", 1) != 1) {
- Tcl_Panic("Tcl_FinalizeNotifier: %s",
- "unable to write q to triggerPipe");
- }
- close(triggerPipe);
- pthread_mutex_lock(&notifierMutex);
- while(triggerPipe != -1) {
- pthread_cond_wait(&notifierCV, &notifierMutex);
- }
- pthread_mutex_unlock(&notifierMutex);
- if (notifierThreadRunning) {
- int result = pthread_join((pthread_t) notifierThread, NULL);
+ if (triggerPipe != -1) {
+ if (write(triggerPipe, "q", 1) != 1) {
+ Tcl_Panic("Tcl_FinalizeNotifier: %s",
+ "unable to write q to triggerPipe");
+ }
+ close(triggerPipe);
+ pthread_mutex_lock(&notifierMutex);
+ while(triggerPipe != -1) {
+ pthread_cond_wait(&notifierCV, &notifierMutex);
+ }
+ pthread_mutex_unlock(&notifierMutex);
+ if (notifierThreadRunning) {
+ int result = pthread_join((pthread_t) notifierThread, NULL);
- if (result) {
- Tcl_Panic("Tcl_FinalizeNotifier: unable to join notifier "
- "thread");
+ if (result) {
+ Tcl_Panic("Tcl_FinalizeNotifier: unable to join notifier "
+ "thread");
+ }
+ notifierThreadRunning = 0;
}
- notifierThreadRunning = 0;
}
}
- }
- /*
- * Clean up any synchronization objects in the thread local storage.
- */
+ /*
+ * Clean up any synchronization objects in the thread local storage.
+ */
#ifdef __CYGWIN__
- DestroyWindow(tsdPtr->hwnd);
- CloseHandle(tsdPtr->event);
+ DestroyWindow(tsdPtr->hwnd);
+ CloseHandle(tsdPtr->event);
#else /* __CYGWIN__ */
- pthread_cond_destroy(&tsdPtr->waitCV);
+ pthread_cond_destroy(&tsdPtr->waitCV);
#endif /* __CYGWIN__ */
- tsdPtr->waitCVinitialized = 0;
+ tsdPtr->waitCVinitialized = 0;
- pthread_mutex_unlock(&notifierInitMutex);
+ pthread_mutex_unlock(&notifierInitMutex);
#endif /* TCL_THREADS */
+ }
}
/*
@@ -488,18 +490,24 @@ void
Tcl_AlertNotifier(
ClientData clientData)
{
+ if (tclNotifierHooks.alertNotifierProc) {
+ tclNotifierHooks.alertNotifierProc(clientData);
+ return;
+ } else {
#ifdef TCL_THREADS
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *) clientData;
+ ThreadSpecificData *tsdPtr = clientData;
- pthread_mutex_lock(&notifierMutex);
- tsdPtr->eventReady = 1;
-#ifdef __CYGWIN__
- PostMessageW(tsdPtr->hwnd, 1024, 0, 0);
-#else /* __CYGWIN__ */
- pthread_cond_broadcast(&tsdPtr->waitCV);
-#endif /* __CYGWIN__ */
- pthread_mutex_unlock(&notifierMutex);
+ pthread_mutex_lock(&notifierMutex);
+ tsdPtr->eventReady = 1;
+
+# ifdef __CYGWIN__
+ PostMessageW(tsdPtr->hwnd, 1024, 0, 0);
+# else
+ pthread_cond_broadcast(&tsdPtr->waitCV);
+# endif /* __CYGWIN__ */
+ pthread_mutex_unlock(&notifierMutex);
#endif /* TCL_THREADS */
+ }
}
/*
@@ -522,16 +530,17 @@ Tcl_AlertNotifier(
void
Tcl_SetTimer(
- Tcl_Time *timePtr) /* Timeout value, may be NULL. */
+ const Tcl_Time *timePtr) /* Timeout value, may be NULL. */
{
- /*
- * The interval timer doesn't do anything in this implementation,
- * because the only event loop is via Tcl_DoOneEvent, which passes
- * timeout values to Tcl_WaitForEvent.
- */
-
- if (tclStubs.tcl_SetTimer != tclOriginalNotifier.setTimerProc) {
- tclStubs.tcl_SetTimer(timePtr);
+ if (tclNotifierHooks.setTimerProc) {
+ tclNotifierHooks.setTimerProc(timePtr);
+ return;
+ } else {
+ /*
+ * The interval timer doesn't do anything in this implementation,
+ * because the only event loop is via Tcl_DoOneEvent, which passes
+ * timeout values to Tcl_WaitForEvent.
+ */
}
}
@@ -556,11 +565,14 @@ Tcl_ServiceModeHook(
int mode) /* Either TCL_SERVICE_ALL, or
* TCL_SERVICE_NONE. */
{
+ if (tclNotifierHooks.serviceModeHookProc) {
+ tclNotifierHooks.serviceModeHookProc(mode);
+ return;
+ } else if (mode == TCL_SERVICE_ALL) {
#if TCL_THREADS
- if (mode == TCL_SERVICE_ALL) {
StartNotifierThread("Tcl_ServiceModeHook");
- }
#endif
+ }
}
/*
@@ -590,53 +602,52 @@ Tcl_CreateFileHandler(
* event. */
ClientData clientData) /* Arbitrary data to pass to proc. */
{
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- FileHandler *filePtr;
-
- if (tclStubs.tcl_CreateFileHandler !=
- tclOriginalNotifier.createFileHandlerProc) {
- tclStubs.tcl_CreateFileHandler(fd, mask, proc, clientData);
+ if (tclNotifierHooks.createFileHandlerProc) {
+ tclNotifierHooks.createFileHandlerProc(fd, mask, proc, clientData);
return;
- }
+ } else {
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+ FileHandler *filePtr;
- for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
- filePtr = filePtr->nextPtr) {
- if (filePtr->fd == fd) {
- break;
+ for (filePtr = tsdPtr->firstFileHandlerPtr; filePtr != NULL;
+ filePtr = filePtr->nextPtr) {
+ if (filePtr->fd == fd) {
+ break;
+ }
}
- }
- if (filePtr == NULL) {
- filePtr = (FileHandler*) ckalloc(sizeof(FileHandler));
- filePtr->fd = fd;
- filePtr->readyMask = 0;
- filePtr->nextPtr = tsdPtr->firstFileHandlerPtr;
- tsdPtr->firstFileHandlerPtr = filePtr;
- }
- filePtr->proc = proc;
- filePtr->clientData = clientData;
- filePtr->mask = mask;
+ if (filePtr == NULL) {
+ filePtr = ckalloc(sizeof(FileHandler));
+ filePtr->fd = fd;
+ filePtr->readyMask = 0;
+ filePtr->nextPtr = tsdPtr->firstFileHandlerPtr;
+ tsdPtr->firstFileHandlerPtr = filePtr;
+ }
+ filePtr->proc = proc;
+ filePtr->clientData = clientData;
+ filePtr->mask = mask;
- /*
- * Update the check masks for this file.
- */
+ /*
+ * Update the check masks for this file.
+ */
- if (mask & TCL_READABLE) {
- FD_SET(fd, &tsdPtr->checkMasks.readable);
- } else {
- FD_CLR(fd, &tsdPtr->checkMasks.readable);
- }
- if (mask & TCL_WRITABLE) {
- FD_SET(fd, &tsdPtr->checkMasks.writable);
- } else {
- FD_CLR(fd, &tsdPtr->checkMasks.writable);
- }
- if (mask & TCL_EXCEPTION) {
- FD_SET(fd, &tsdPtr->checkMasks.exception);
- } else {
- FD_CLR(fd, &tsdPtr->checkMasks.exception);
- }
- if (tsdPtr->numFdBits <= fd) {
- tsdPtr->numFdBits = fd+1;
+ if (mask & TCL_READABLE) {
+ FD_SET(fd, &tsdPtr->checkMasks.readable);
+ } else {
+ FD_CLR(fd, &tsdPtr->checkMasks.readable);
+ }
+ if (mask & TCL_WRITABLE) {
+ FD_SET(fd, &tsdPtr->checkMasks.writable);
+ } else {
+ FD_CLR(fd, &tsdPtr->checkMasks.writable);
+ }
+ if (mask & TCL_EXCEPTION) {
+ FD_SET(fd, &tsdPtr->checkMasks.exception);
+ } else {
+ FD_CLR(fd, &tsdPtr->checkMasks.exception);
+ }
+ if (tsdPtr->numFdBits <= fd) {
+ tsdPtr->numFdBits = fd+1;
+ }
}
}
@@ -661,72 +672,71 @@ Tcl_DeleteFileHandler(
int fd) /* Stream id for which to remove callback
* function. */
{
- FileHandler *filePtr, *prevPtr;
- int i;
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- if (tclStubs.tcl_DeleteFileHandler !=
- tclOriginalNotifier.deleteFileHandlerProc) {
- tclStubs.tcl_DeleteFileHandler(fd);
+ if (tclNotifierHooks.deleteFileHandlerProc) {
+ tclNotifierHooks.deleteFileHandlerProc(fd);
return;
- }
+ } else {
+ FileHandler *filePtr, *prevPtr;
+ int i;
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- /*
- * Find the entry for the given file (and return if there isn't one).
- */
+ /*
+ * Find the entry for the given file (and return if there isn't one).
+ */
- for (prevPtr = NULL, filePtr = tsdPtr->firstFileHandlerPtr; ;
- prevPtr = filePtr, filePtr = filePtr->nextPtr) {
- if (filePtr == NULL) {
- return;
- }
- if (filePtr->fd == fd) {
- break;
+ for (prevPtr = NULL, filePtr = tsdPtr->firstFileHandlerPtr; ;
+ prevPtr = filePtr, filePtr = filePtr->nextPtr) {
+ if (filePtr == NULL) {
+ return;
+ }
+ if (filePtr->fd == fd) {
+ break;
+ }
}
- }
- /*
- * Update the check masks for this file.
- */
+ /*
+ * Update the check masks for this file.
+ */
- if (filePtr->mask & TCL_READABLE) {
- FD_CLR(fd, &tsdPtr->checkMasks.readable);
- }
- if (filePtr->mask & TCL_WRITABLE) {
- FD_CLR(fd, &tsdPtr->checkMasks.writable);
- }
- if (filePtr->mask & TCL_EXCEPTION) {
- FD_CLR(fd, &tsdPtr->checkMasks.exception);
- }
+ if (filePtr->mask & TCL_READABLE) {
+ FD_CLR(fd, &tsdPtr->checkMasks.readable);
+ }
+ if (filePtr->mask & TCL_WRITABLE) {
+ FD_CLR(fd, &tsdPtr->checkMasks.writable);
+ }
+ if (filePtr->mask & TCL_EXCEPTION) {
+ FD_CLR(fd, &tsdPtr->checkMasks.exception);
+ }
- /*
- * Find current max fd.
- */
+ /*
+ * Find current max fd.
+ */
- if (fd+1 == tsdPtr->numFdBits) {
- int numFdBits = 0;
+ if (fd+1 == tsdPtr->numFdBits) {
+ int numFdBits = 0;
- for (i = fd-1; i >= 0; i--) {
- if (FD_ISSET(i, &tsdPtr->checkMasks.readable)
- || FD_ISSET(i, &tsdPtr->checkMasks.writable)
- || FD_ISSET(i, &tsdPtr->checkMasks.exception)) {
- numFdBits = i+1;
- break;
+ for (i = fd-1; i >= 0; i--) {
+ if (FD_ISSET(i, &tsdPtr->checkMasks.readable)
+ || FD_ISSET(i, &tsdPtr->checkMasks.writable)
+ || FD_ISSET(i, &tsdPtr->checkMasks.exception)) {
+ numFdBits = i+1;
+ break;
+ }
}
+ tsdPtr->numFdBits = numFdBits;
}
- tsdPtr->numFdBits = numFdBits;
- }
- /*
- * Clean up information in the callback record.
- */
+ /*
+ * Clean up information in the callback record.
+ */
- if (prevPtr == NULL) {
- tsdPtr->firstFileHandlerPtr = filePtr->nextPtr;
- } else {
- prevPtr->nextPtr = filePtr->nextPtr;
+ if (prevPtr == NULL) {
+ tsdPtr->firstFileHandlerPtr = filePtr->nextPtr;
+ } else {
+ prevPtr->nextPtr = filePtr->nextPtr;
+ }
+ ckfree(filePtr);
}
- ckfree((char *) filePtr);
}
/*
@@ -848,264 +858,264 @@ NotifierProc(
int
Tcl_WaitForEvent(
- Tcl_Time *timePtr) /* Maximum block time, or NULL. */
+ const Tcl_Time *timePtr) /* Maximum block time, or NULL. */
{
- FileHandler *filePtr;
- int mask;
- Tcl_Time vTime;
+ if (tclNotifierHooks.waitForEventProc) {
+ return tclNotifierHooks.waitForEventProc(timePtr);
+ } else {
+ FileHandler *filePtr;
+ int mask;
+ Tcl_Time vTime;
#ifdef TCL_THREADS
- int waitForFiles;
-#ifdef __CYGWIN__
- MSG msg;
-#endif /* __CYGWIN__ */
+ int waitForFiles;
+# ifdef __CYGWIN__
+ MSG msg;
+# endif /* __CYGWIN__ */
#else
- /*
- * Impl. notes: timeout & timeoutPtr are used if, and only if threads
- * are not enabled. They are the arguments for the regular select()
- * used when the core is not thread-enabled.
- */
+ /*
+ * Impl. notes: timeout & timeoutPtr are used if, and only if threads
+ * are not enabled. They are the arguments for the regular select()
+ * used when the core is not thread-enabled.
+ */
- struct timeval timeout, *timeoutPtr;
- int numFound;
+ struct timeval timeout, *timeoutPtr;
+ int numFound;
#endif /* TCL_THREADS */
- ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
- if (tclStubs.tcl_WaitForEvent != tclOriginalNotifier.waitForEventProc) {
- return tclStubs.tcl_WaitForEvent(timePtr);
- }
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- /*
- * Set up the timeout structure. Note that if there are no events to
- * check for, we return with a negative result rather than blocking
- * forever.
- */
-
- if (timePtr != NULL) {
/*
- * TIP #233 (Virtualized Time). Is virtual time in effect? And do
- * we actually have something to scale? If yes to both then we
- * call the handler to do this scaling.
+ * Set up the timeout structure. Note that if there are no events to
+ * check for, we return with a negative result rather than blocking
+ * forever.
*/
- if (timePtr->sec != 0 || timePtr->usec != 0) {
- vTime = *timePtr;
- tclScaleTimeProcPtr(&vTime, tclTimeClientData);
- timePtr = &vTime;
- }
+ if (timePtr != NULL) {
+ /*
+ * TIP #233 (Virtualized Time). Is virtual time in effect? And do
+ * we actually have something to scale? If yes to both then we
+ * call the handler to do this scaling.
+ */
+
+ if (timePtr->sec != 0 || timePtr->usec != 0) {
+ vTime = *timePtr;
+ tclScaleTimeProcPtr(&vTime, tclTimeClientData);
+ timePtr = &vTime;
+ }
#ifndef TCL_THREADS
- timeout.tv_sec = timePtr->sec;
- timeout.tv_usec = timePtr->usec;
- timeoutPtr = &timeout;
- } else if (tsdPtr->numFdBits == 0) {
- /*
- * If there are no threads, no timeout, and no fds registered,
- * then there are no events possible and we must avoid deadlock.
- * Note that this is not entirely correct because there might be a
- * signal that could interrupt the select call, but we don't
- * handle that case if we aren't using threads.
- */
+ timeout.tv_sec = timePtr->sec;
+ timeout.tv_usec = timePtr->usec;
+ timeoutPtr = &timeout;
+ } else if (tsdPtr->numFdBits == 0) {
+ /*
+ * If there are no threads, no timeout, and no fds registered,
+ * then there are no events possible and we must avoid deadlock.
+ * Note that this is not entirely correct because there might be a
+ * signal that could interrupt the select call, but we don't
+ * handle that case if we aren't using threads.
+ */
- return -1;
- } else {
- timeoutPtr = NULL;
+ return -1;
+ } else {
+ timeoutPtr = NULL;
#endif /* !TCL_THREADS */
- }
+ }
#ifdef TCL_THREADS
- /*
- * Start notifier thread and place this thread on the list of
- * interested threads, signal the notifier thread, and wait for a
- * response or a timeout.
- */
- StartNotifierThread("Tcl_WaitForEvent");
+ /*
+ * Start notifier thread and place this thread on the list of
+ * interested threads, signal the notifier thread, and wait for a
+ * response or a timeout.
+ */
+ StartNotifierThread("Tcl_WaitForEvent");
- pthread_mutex_lock(&notifierMutex);
+ pthread_mutex_lock(&notifierMutex);
- if (timePtr != NULL && timePtr->sec == 0 && (timePtr->usec == 0
+ if (timePtr != NULL && timePtr->sec == 0 && (timePtr->usec == 0
#if defined(__APPLE__) && defined(__LP64__)
+ /*
+ * On 64-bit Darwin, pthread_cond_timedwait() appears to have
+ * a bug that causes it to wait forever when passed an
+ * absolute time which has already been exceeded by the system
+ * time; as a workaround, when given a very brief timeout,
+ * just do a poll. [Bug 1457797]
+ */
+ || timePtr->usec < 10
+#endif /* __APPLE__ && __LP64__ */
+ )) {
/*
- * On 64-bit Darwin, pthread_cond_timedwait() appears to have
- * a bug that causes it to wait forever when passed an
- * absolute time which has already been exceeded by the system
- * time; as a workaround, when given a very brief timeout,
- * just do a poll. [Bug 1457797]
+ * Cannot emulate a polling select with a polling condition
+ * variable. Instead, pretend to wait for files and tell the
+ * notifier thread what we are doing. The notifier thread makes
+ * sure it goes through select with its select mask in the same
+ * state as ours currently is. We block until that happens.
*/
- || timePtr->usec < 10
-#endif /* __APPLE__ && __LP64__ */
- )) {
- /*
- * Cannot emulate a polling select with a polling condition
- * variable. Instead, pretend to wait for files and tell the
- * notifier thread what we are doing. The notifier thread makes
- * sure it goes through select with its select mask in the same
- * state as ours currently is. We block until that happens.
- */
- waitForFiles = 1;
- tsdPtr->pollState = POLL_WANT;
- timePtr = NULL;
- } else {
- waitForFiles = (tsdPtr->numFdBits > 0);
- tsdPtr->pollState = 0;
- }
+ waitForFiles = 1;
+ tsdPtr->pollState = POLL_WANT;
+ timePtr = NULL;
+ } else {
+ waitForFiles = (tsdPtr->numFdBits > 0);
+ tsdPtr->pollState = 0;
+ }
- if (waitForFiles) {
- /*
- * Add the ThreadSpecificData structure of this thread to the list
- * of ThreadSpecificData structures of all threads that are
- * waiting on file events.
- */
+ if (waitForFiles) {
+ /*
+ * Add the ThreadSpecificData structure of this thread to the list
+ * of ThreadSpecificData structures of all threads that are
+ * waiting on file events.
+ */
- tsdPtr->nextPtr = waitingListPtr;
- if (waitingListPtr) {
- waitingListPtr->prevPtr = tsdPtr;
- }
- tsdPtr->prevPtr = 0;
- waitingListPtr = tsdPtr;
- tsdPtr->onList = 1;
+ tsdPtr->nextPtr = waitingListPtr;
+ if (waitingListPtr) {
+ waitingListPtr->prevPtr = tsdPtr;
+ }
+ tsdPtr->prevPtr = 0;
+ waitingListPtr = tsdPtr;
+ tsdPtr->onList = 1;
- if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
- Tcl_Panic("Tcl_WaitForEvent: %s",
- "unable to write to triggerPipe");
+ if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
+ Tcl_Panic("Tcl_WaitForEvent: %s",
+ "unable to write to triggerPipe");
+ }
}
- }
- FD_ZERO(&tsdPtr->readyMasks.readable);
- FD_ZERO(&tsdPtr->readyMasks.writable);
- FD_ZERO(&tsdPtr->readyMasks.exception);
+ FD_ZERO(&tsdPtr->readyMasks.readable);
+ FD_ZERO(&tsdPtr->readyMasks.writable);
+ FD_ZERO(&tsdPtr->readyMasks.exception);
- if (!tsdPtr->eventReady) {
+ if (!tsdPtr->eventReady) {
#ifdef __CYGWIN__
- if (!PeekMessageW(&msg, NULL, 0, 0, 0)) {
- DWORD timeout;
+ if (!PeekMessageW(&msg, NULL, 0, 0, 0)) {
+ DWORD timeout;
- if (timePtr) {
- timeout = timePtr->sec * 1000 + timePtr->usec / 1000;
- } else {
- timeout = 0xFFFFFFFF;
+ if (timePtr) {
+ timeout = timePtr->sec * 1000 + timePtr->usec / 1000;
+ } else {
+ timeout = 0xFFFFFFFF;
+ }
+ pthread_mutex_unlock(&notifierMutex);
+ MsgWaitForMultipleObjects(1, &tsdPtr->event, 0, timeout, 1279);
+ pthread_mutex_lock(&notifierMutex);
}
- pthread_mutex_unlock(&notifierMutex);
- MsgWaitForMultipleObjects(1, &tsdPtr->event, 0, timeout, 1279);
- pthread_mutex_lock(&notifierMutex);
- }
#else
- if (timePtr != NULL) {
- Tcl_Time now;
- struct timespec ptime;
+ if (timePtr != NULL) {
+ Tcl_Time now;
+ struct timespec ptime;
- Tcl_GetTime(&now);
- ptime.tv_sec = timePtr->sec + now.sec + (timePtr->usec + now.usec) / 1000000;
- ptime.tv_nsec = 1000 * ((timePtr->usec + now.usec) % 1000000);
+ Tcl_GetTime(&now);
+ ptime.tv_sec = timePtr->sec + now.sec + (timePtr->usec + now.usec) / 1000000;
+ ptime.tv_nsec = 1000 * ((timePtr->usec + now.usec) % 1000000);
- pthread_cond_timedwait(&tsdPtr->waitCV, &notifierMutex, &ptime);
- } else {
- pthread_cond_wait(&tsdPtr->waitCV, &notifierMutex);
- }
+ pthread_cond_timedwait(&tsdPtr->waitCV, &notifierMutex, &ptime);
+ } else {
+ pthread_cond_wait(&tsdPtr->waitCV, &notifierMutex);
+ }
#endif /* __CYGWIN__ */
- }
- tsdPtr->eventReady = 0;
+ }
+ tsdPtr->eventReady = 0;
#ifdef __CYGWIN__
- while (PeekMessageW(&msg, NULL, 0, 0, 0)) {
- /*
- * Retrieve and dispatch the message.
- */
+ while (PeekMessageW(&msg, NULL, 0, 0, 0)) {
+ /*
+ * Retrieve and dispatch the message.
+ */
- DWORD result = GetMessageW(&msg, NULL, 0, 0);
+ DWORD result = GetMessageW(&msg, NULL, 0, 0);
- if (result == 0) {
- PostQuitMessage(msg.wParam);
- /* What to do here? */
- } else if (result != (DWORD) -1) {
- TranslateMessage(&msg);
- DispatchMessageW(&msg);
+ if (result == 0) {
+ PostQuitMessage(msg.wParam);
+ /* What to do here? */
+ } else if (result != (DWORD) -1) {
+ TranslateMessage(&msg);
+ DispatchMessageW(&msg);
+ }
}
- }
- ResetEvent(tsdPtr->event);
+ ResetEvent(tsdPtr->event);
#endif /* __CYGWIN__ */
- if (waitForFiles && tsdPtr->onList) {
- /*
- * Remove the ThreadSpecificData structure of this thread from the
- * waiting list. Alert the notifier thread to recompute its select
- * masks - skipping this caused a hang when trying to close a pipe
- * which the notifier thread was still doing a select on.
- */
+ if (waitForFiles && tsdPtr->onList) {
+ /*
+ * Remove the ThreadSpecificData structure of this thread from the
+ * waiting list. Alert the notifier thread to recompute its select
+ * masks - skipping this caused a hang when trying to close a pipe
+ * which the notifier thread was still doing a select on.
+ */
- if (tsdPtr->prevPtr) {
- tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
- } else {
- waitingListPtr = tsdPtr->nextPtr;
- }
- if (tsdPtr->nextPtr) {
- tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
- }
- tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
- tsdPtr->onList = 0;
- if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
- Tcl_Panic("Tcl_WaitForEvent: %s",
- "unable to write to triggerPipe");
+ if (tsdPtr->prevPtr) {
+ tsdPtr->prevPtr->nextPtr = tsdPtr->nextPtr;
+ } else {
+ waitingListPtr = tsdPtr->nextPtr;
+ }
+ if (tsdPtr->nextPtr) {
+ tsdPtr->nextPtr->prevPtr = tsdPtr->prevPtr;
+ }
+ tsdPtr->nextPtr = tsdPtr->prevPtr = NULL;
+ tsdPtr->onList = 0;
+ if ((write(triggerPipe, "", 1) == -1) && (errno != EAGAIN)) {
+ Tcl_Panic("Tcl_WaitForEvent: %s",
+ "unable to write to triggerPipe");
+ }
}
- }
#else
- tsdPtr->readyMasks = tsdPtr->checkMasks;
- numFound = select(tsdPtr->numFdBits, &tsdPtr->readyMasks.readable,
- &tsdPtr->readyMasks.writable, &tsdPtr->readyMasks.exception,
- timeoutPtr);
+ tsdPtr->readyMasks = tsdPtr->checkMasks;
+ numFound = select(tsdPtr->numFdBits, &tsdPtr->readyMasks.readable,
+ &tsdPtr->readyMasks.writable, &tsdPtr->readyMasks.exception,
+ timeoutPtr);
- /*
- * Some systems don't clear the masks after an error, so we have to do
- * it here.
- */
+ /*
+ * Some systems don't clear the masks after an error, so we have to do
+ * it here.
+ */
- if (numFound == -1) {
- FD_ZERO(&tsdPtr->readyMasks.readable);
- FD_ZERO(&tsdPtr->readyMasks.writable);
- FD_ZERO(&tsdPtr->readyMasks.exception);
- }
+ if (numFound == -1) {
+ FD_ZERO(&tsdPtr->readyMasks.readable);
+ FD_ZERO(&tsdPtr->readyMasks.writable);
+ FD_ZERO(&tsdPtr->readyMasks.exception);
+ }
#endif /* TCL_THREADS */
- /*
- * Queue all detected file events before returning.
- */
+ /*
+ * Queue all detected file events before returning.
+ */
- for (filePtr = tsdPtr->firstFileHandlerPtr; (filePtr != NULL);
- filePtr = filePtr->nextPtr) {
- mask = 0;
- if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.readable)) {
- mask |= TCL_READABLE;
- }
- if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.writable)) {
- mask |= TCL_WRITABLE;
- }
- if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.exception)) {
- mask |= TCL_EXCEPTION;
- }
+ for (filePtr = tsdPtr->firstFileHandlerPtr; (filePtr != NULL);
+ filePtr = filePtr->nextPtr) {
+ mask = 0;
+ if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.readable)) {
+ mask |= TCL_READABLE;
+ }
+ if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.writable)) {
+ mask |= TCL_WRITABLE;
+ }
+ if (FD_ISSET(filePtr->fd, &tsdPtr->readyMasks.exception)) {
+ mask |= TCL_EXCEPTION;
+ }
- if (!mask) {
- continue;
- }
+ if (!mask) {
+ continue;
+ }
- /*
- * Don't bother to queue an event if the mask was previously
- * non-zero since an event must still be on the queue.
- */
+ /*
+ * Don't bother to queue an event if the mask was previously
+ * non-zero since an event must still be on the queue.
+ */
- if (filePtr->readyMask == 0) {
- FileHandlerEvent *fileEvPtr =
- (FileHandlerEvent *) ckalloc(sizeof(FileHandlerEvent));
+ if (filePtr->readyMask == 0) {
+ FileHandlerEvent *fileEvPtr =
+ ckalloc(sizeof(FileHandlerEvent));
- fileEvPtr->header.proc = FileHandlerEventProc;
- fileEvPtr->fd = filePtr->fd;
- Tcl_QueueEvent((Tcl_Event *) fileEvPtr, TCL_QUEUE_TAIL);
+ fileEvPtr->header.proc = FileHandlerEventProc;
+ fileEvPtr->fd = filePtr->fd;
+ Tcl_QueueEvent((Tcl_Event *) fileEvPtr, TCL_QUEUE_TAIL);
+ }
+ filePtr->readyMask = mask;
}
- filePtr->readyMask = mask;
- }
#ifdef TCL_THREADS
- pthread_mutex_unlock(&notifierMutex);
+ pthread_mutex_unlock(&notifierMutex);
#endif /* TCL_THREADS */
- return 0;
+ return 0;
+ }
}
#ifdef TCL_THREADS
@@ -1445,8 +1455,8 @@ AtForkChild(void)
*/
#ifdef __CYGWIN__
DestroyWindow(tsdPtr->hwnd);
- tsdPtr->hwnd = CreateWindowExW(NULL, L"TclNotifier",
- L"TclNotifier", 0, 0, 0, 0, 0, NULL, NULL,
+ tsdPtr->hwnd = CreateWindowExW(NULL, NotfyClassName,
+ NotfyClassName, 0, 0, 0, 0, 0, NULL, NULL,
TclWinGetTclInstance(), NULL);
ResetEvent(tsdPtr->event);
#else