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/*
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* tclWinConsole.c --
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*
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* This file implements the Windows-specific console functions,
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* and the "console" channel driver.
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*
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* Copyright (c) 1999 by Scriptics Corp.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tclWinConsole.c,v 1.11.2.3 2006/03/28 21:02:37 hobbs Exp $
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*/
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#include "tclWinInt.h"
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#include <fcntl.h>
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#include <io.h>
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#include <sys/stat.h>
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/*
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* The following variable is used to tell whether this module has been
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* initialized.
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*/
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static int initialized = 0;
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/*
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* The consoleMutex locks around access to the initialized variable, and it is
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* used to protect background threads from being terminated while they are
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* using APIs that hold locks.
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*/
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TCL_DECLARE_MUTEX(consoleMutex)
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/*
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* Bit masks used in the flags field of the ConsoleInfo structure below.
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*/
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#define CONSOLE_PENDING (1<<0) /* Message is pending in the queue. */
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#define CONSOLE_ASYNC (1<<1) /* Channel is non-blocking. */
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/*
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* Bit masks used in the sharedFlags field of the ConsoleInfo structure below.
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*/
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#define CONSOLE_EOF (1<<2) /* Console has reached EOF. */
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#define CONSOLE_BUFFERED (1<<3) /* data was read into a buffer by the reader
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thread */
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#define CONSOLE_BUFFER_SIZE (8*1024)
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/*
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* This structure describes per-instance data for a console based channel.
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*/
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typedef struct ConsoleInfo {
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HANDLE handle;
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int type;
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struct ConsoleInfo *nextPtr;/* Pointer to next registered console. */
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Tcl_Channel channel; /* Pointer to channel structure. */
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int validMask; /* OR'ed combination of TCL_READABLE,
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* TCL_WRITABLE, or TCL_EXCEPTION: indicates
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* which operations are valid on the file. */
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int watchMask; /* OR'ed combination of TCL_READABLE,
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* TCL_WRITABLE, or TCL_EXCEPTION: indicates
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* which events should be reported. */
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int flags; /* State flags, see above for a list. */
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Tcl_ThreadId threadId; /* Thread to which events should be reported.
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* This value is used by the reader/writer
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* threads. */
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HANDLE writeThread; /* Handle to writer thread. */
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HANDLE readThread; /* Handle to reader thread. */
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HANDLE writable; /* Manual-reset event to signal when the
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* writer thread has finished waiting for
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* the current buffer to be written. */
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HANDLE readable; /* Manual-reset event to signal when the
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* reader thread has finished waiting for
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* input. */
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HANDLE startWriter; /* Auto-reset event used by the main thread to
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* signal when the writer thread should attempt
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* to write to the console. */
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HANDLE stopWriter; /* Auto-reset event used by the main thread to
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* signal when the writer thread should exit.
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*/
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HANDLE startReader; /* Auto-reset event used by the main thread to
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* signal when the reader thread should attempt
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* to read from the console. */
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HANDLE stopReader; /* Auto-reset event used by the main thread to
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* signal when the reader thread should exit.
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*/
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DWORD writeError; /* An error caused by the last background
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* write. Set to 0 if no error has been
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* detected. This word is shared with the
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* writer thread so access must be
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* synchronized with the writable object.
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*/
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char *writeBuf; /* Current background output buffer.
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* Access is synchronized with the writable
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* object. */
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int writeBufLen; /* Size of write buffer. Access is
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* synchronized with the writable
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* object. */
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int toWrite; /* Current amount to be written. Access is
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* synchronized with the writable object. */
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int readFlags; /* Flags that are shared with the reader
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* thread. Access is synchronized with the
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* readable object. */
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int bytesRead; /* number of bytes in the buffer */
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int offset; /* number of bytes read out of the buffer */
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char buffer[CONSOLE_BUFFER_SIZE];
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/* Data consumed by reader thread. */
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} ConsoleInfo;
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typedef struct ThreadSpecificData {
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/*
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* The following pointer refers to the head of the list of consoles
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* that are being watched for file events.
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*/
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ConsoleInfo *firstConsolePtr;
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} ThreadSpecificData;
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static Tcl_ThreadDataKey dataKey;
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/*
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* The following structure is what is added to the Tcl event queue when
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* console events are generated.
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*/
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typedef struct ConsoleEvent {
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Tcl_Event header; /* Information that is standard for
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* all events. */
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ConsoleInfo *infoPtr; /* Pointer to console info structure. Note
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* that we still have to verify that the
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* console exists before dereferencing this
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* pointer. */
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} ConsoleEvent;
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/*
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* Declarations for functions used only in this file.
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*/
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static int ConsoleBlockModeProc(ClientData instanceData, int mode);
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static void ConsoleCheckProc(ClientData clientData, int flags);
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static int ConsoleCloseProc(ClientData instanceData,
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Tcl_Interp *interp);
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static int ConsoleEventProc(Tcl_Event *evPtr, int flags);
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static void ConsoleExitHandler(ClientData clientData);
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static int ConsoleGetHandleProc(ClientData instanceData,
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int direction, ClientData *handlePtr);
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static void ConsoleInit(void);
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static int ConsoleInputProc(ClientData instanceData, char *buf,
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int toRead, int *errorCode);
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static int ConsoleOutputProc(ClientData instanceData,
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CONST char *buf, int toWrite, int *errorCode);
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static DWORD WINAPI ConsoleReaderThread(LPVOID arg);
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static void ConsoleSetupProc(ClientData clientData, int flags);
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static void ConsoleWatchProc(ClientData instanceData, int mask);
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static DWORD WINAPI ConsoleWriterThread(LPVOID arg);
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static void ProcExitHandler(ClientData clientData);
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static int WaitForRead(ConsoleInfo *infoPtr, int blocking);
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static void ConsoleThreadActionProc _ANSI_ARGS_ ((
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ClientData instanceData, int action));
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/*
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* This structure describes the channel type structure for command console
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* based IO.
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*/
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static Tcl_ChannelType consoleChannelType = {
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"console", /* Type name. */
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TCL_CHANNEL_VERSION_4, /* v4 channel */
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ConsoleCloseProc, /* Close proc. */
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ConsoleInputProc, /* Input proc. */
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ConsoleOutputProc, /* Output proc. */
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NULL, /* Seek proc. */
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NULL, /* Set option proc. */
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NULL, /* Get option proc. */
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ConsoleWatchProc, /* Set up notifier to watch the channel. */
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ConsoleGetHandleProc, /* Get an OS handle from channel. */
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NULL, /* close2proc. */
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ConsoleBlockModeProc, /* Set blocking or non-blocking mode.*/
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NULL, /* flush proc. */
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NULL, /* handler proc. */
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NULL, /* wide seek proc */
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ConsoleThreadActionProc, /* thread action proc */
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};
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/*
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*----------------------------------------------------------------------
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*
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* ConsoleInit --
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|
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*
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* This function initializes the static variables for this file.
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*
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|
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* Results:
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* None.
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*
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* Side effects:
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* Creates a new event source.
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*
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*----------------------------------------------------------------------
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*/
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static void
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ConsoleInit()
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{
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ThreadSpecificData *tsdPtr;
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/*
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* Check the initialized flag first, then check again in the mutex.
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* This is a speed enhancement.
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*/
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if (!initialized) {
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Tcl_MutexLock(&consoleMutex);
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if (!initialized) {
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initialized = 1;
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Tcl_CreateExitHandler(ProcExitHandler, NULL);
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}
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Tcl_MutexUnlock(&consoleMutex);
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}
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tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
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if (tsdPtr == NULL) {
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tsdPtr = TCL_TSD_INIT(&dataKey);
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tsdPtr->firstConsolePtr = NULL;
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Tcl_CreateEventSource(ConsoleSetupProc, ConsoleCheckProc, NULL);
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Tcl_CreateThreadExitHandler(ConsoleExitHandler, NULL);
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}
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}
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|
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234 |
/*
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*----------------------------------------------------------------------
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*
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* ConsoleExitHandler --
|
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*
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* This function is called to cleanup the console module before
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* Tcl is unloaded.
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*
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|
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* Results:
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* None.
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*
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* Side effects:
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* Removes the console event source.
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*
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|
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*----------------------------------------------------------------------
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249 |
*/
|
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|
250 |
|
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251 |
static void
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252 |
ConsoleExitHandler(
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ClientData clientData) /* Old window proc */
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{
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255 |
Tcl_DeleteEventSource(ConsoleSetupProc, ConsoleCheckProc, NULL);
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}
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|
257 |
|
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|
258 |
/*
|
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|
259 |
*----------------------------------------------------------------------
|
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260 |
*
|
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|
261 |
* ProcExitHandler --
|
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|
262 |
*
|
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|
263 |
* This function is called to cleanup the process list before
|
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|
264 |
* Tcl is unloaded.
|
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|
265 |
*
|
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|
266 |
* Results:
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|
267 |
* None.
|
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|
268 |
*
|
|
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|
269 |
* Side effects:
|
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|
270 |
* Resets the process list.
|
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|
271 |
*
|
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|
272 |
*----------------------------------------------------------------------
|
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|
273 |
*/
|
|
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|
274 |
|
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|
275 |
static void
|
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|
276 |
ProcExitHandler(
|
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|
277 |
ClientData clientData) /* Old window proc */
|
|
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|
278 |
{
|
|
sl@0
|
279 |
Tcl_MutexLock(&consoleMutex);
|
|
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|
280 |
initialized = 0;
|
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|
281 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
282 |
}
|
|
sl@0
|
283 |
|
|
sl@0
|
284 |
/*
|
|
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|
285 |
*----------------------------------------------------------------------
|
|
sl@0
|
286 |
*
|
|
sl@0
|
287 |
* ConsoleSetupProc --
|
|
sl@0
|
288 |
*
|
|
sl@0
|
289 |
* This procedure is invoked before Tcl_DoOneEvent blocks waiting
|
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|
290 |
* for an event.
|
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sl@0
|
291 |
*
|
|
sl@0
|
292 |
* Results:
|
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sl@0
|
293 |
* None.
|
|
sl@0
|
294 |
*
|
|
sl@0
|
295 |
* Side effects:
|
|
sl@0
|
296 |
* Adjusts the block time if needed.
|
|
sl@0
|
297 |
*
|
|
sl@0
|
298 |
*----------------------------------------------------------------------
|
|
sl@0
|
299 |
*/
|
|
sl@0
|
300 |
|
|
sl@0
|
301 |
void
|
|
sl@0
|
302 |
ConsoleSetupProc(
|
|
sl@0
|
303 |
ClientData data, /* Not used. */
|
|
sl@0
|
304 |
int flags) /* Event flags as passed to Tcl_DoOneEvent. */
|
|
sl@0
|
305 |
{
|
|
sl@0
|
306 |
ConsoleInfo *infoPtr;
|
|
sl@0
|
307 |
Tcl_Time blockTime = { 0, 0 };
|
|
sl@0
|
308 |
int block = 1;
|
|
sl@0
|
309 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
310 |
|
|
sl@0
|
311 |
if (!(flags & TCL_FILE_EVENTS)) {
|
|
sl@0
|
312 |
return;
|
|
sl@0
|
313 |
}
|
|
sl@0
|
314 |
|
|
sl@0
|
315 |
/*
|
|
sl@0
|
316 |
* Look to see if any events are already pending. If they are, poll.
|
|
sl@0
|
317 |
*/
|
|
sl@0
|
318 |
|
|
sl@0
|
319 |
for (infoPtr = tsdPtr->firstConsolePtr; infoPtr != NULL;
|
|
sl@0
|
320 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
321 |
if (infoPtr->watchMask & TCL_WRITABLE) {
|
|
sl@0
|
322 |
if (WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT) {
|
|
sl@0
|
323 |
block = 0;
|
|
sl@0
|
324 |
}
|
|
sl@0
|
325 |
}
|
|
sl@0
|
326 |
if (infoPtr->watchMask & TCL_READABLE) {
|
|
sl@0
|
327 |
if (WaitForRead(infoPtr, 0) >= 0) {
|
|
sl@0
|
328 |
block = 0;
|
|
sl@0
|
329 |
}
|
|
sl@0
|
330 |
}
|
|
sl@0
|
331 |
}
|
|
sl@0
|
332 |
if (!block) {
|
|
sl@0
|
333 |
Tcl_SetMaxBlockTime(&blockTime);
|
|
sl@0
|
334 |
}
|
|
sl@0
|
335 |
}
|
|
sl@0
|
336 |
|
|
sl@0
|
337 |
/*
|
|
sl@0
|
338 |
*----------------------------------------------------------------------
|
|
sl@0
|
339 |
*
|
|
sl@0
|
340 |
* ConsoleCheckProc --
|
|
sl@0
|
341 |
*
|
|
sl@0
|
342 |
* This procedure is called by Tcl_DoOneEvent to check the console
|
|
sl@0
|
343 |
* event source for events.
|
|
sl@0
|
344 |
*
|
|
sl@0
|
345 |
* Results:
|
|
sl@0
|
346 |
* None.
|
|
sl@0
|
347 |
*
|
|
sl@0
|
348 |
* Side effects:
|
|
sl@0
|
349 |
* May queue an event.
|
|
sl@0
|
350 |
*
|
|
sl@0
|
351 |
*----------------------------------------------------------------------
|
|
sl@0
|
352 |
*/
|
|
sl@0
|
353 |
|
|
sl@0
|
354 |
static void
|
|
sl@0
|
355 |
ConsoleCheckProc(
|
|
sl@0
|
356 |
ClientData data, /* Not used. */
|
|
sl@0
|
357 |
int flags) /* Event flags as passed to Tcl_DoOneEvent. */
|
|
sl@0
|
358 |
{
|
|
sl@0
|
359 |
ConsoleInfo *infoPtr;
|
|
sl@0
|
360 |
ConsoleEvent *evPtr;
|
|
sl@0
|
361 |
int needEvent;
|
|
sl@0
|
362 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
363 |
|
|
sl@0
|
364 |
if (!(flags & TCL_FILE_EVENTS)) {
|
|
sl@0
|
365 |
return;
|
|
sl@0
|
366 |
}
|
|
sl@0
|
367 |
|
|
sl@0
|
368 |
/*
|
|
sl@0
|
369 |
* Queue events for any ready consoles that don't already have events
|
|
sl@0
|
370 |
* queued.
|
|
sl@0
|
371 |
*/
|
|
sl@0
|
372 |
|
|
sl@0
|
373 |
for (infoPtr = tsdPtr->firstConsolePtr; infoPtr != NULL;
|
|
sl@0
|
374 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
375 |
if (infoPtr->flags & CONSOLE_PENDING) {
|
|
sl@0
|
376 |
continue;
|
|
sl@0
|
377 |
}
|
|
sl@0
|
378 |
|
|
sl@0
|
379 |
/*
|
|
sl@0
|
380 |
* Queue an event if the console is signaled for reading or writing.
|
|
sl@0
|
381 |
*/
|
|
sl@0
|
382 |
|
|
sl@0
|
383 |
needEvent = 0;
|
|
sl@0
|
384 |
if (infoPtr->watchMask & TCL_WRITABLE) {
|
|
sl@0
|
385 |
if (WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT) {
|
|
sl@0
|
386 |
needEvent = 1;
|
|
sl@0
|
387 |
}
|
|
sl@0
|
388 |
}
|
|
sl@0
|
389 |
|
|
sl@0
|
390 |
if (infoPtr->watchMask & TCL_READABLE) {
|
|
sl@0
|
391 |
if (WaitForRead(infoPtr, 0) >= 0) {
|
|
sl@0
|
392 |
needEvent = 1;
|
|
sl@0
|
393 |
}
|
|
sl@0
|
394 |
}
|
|
sl@0
|
395 |
|
|
sl@0
|
396 |
if (needEvent) {
|
|
sl@0
|
397 |
infoPtr->flags |= CONSOLE_PENDING;
|
|
sl@0
|
398 |
evPtr = (ConsoleEvent *) ckalloc(sizeof(ConsoleEvent));
|
|
sl@0
|
399 |
evPtr->header.proc = ConsoleEventProc;
|
|
sl@0
|
400 |
evPtr->infoPtr = infoPtr;
|
|
sl@0
|
401 |
Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL);
|
|
sl@0
|
402 |
}
|
|
sl@0
|
403 |
}
|
|
sl@0
|
404 |
}
|
|
sl@0
|
405 |
|
|
sl@0
|
406 |
|
|
sl@0
|
407 |
/*
|
|
sl@0
|
408 |
*----------------------------------------------------------------------
|
|
sl@0
|
409 |
*
|
|
sl@0
|
410 |
* ConsoleBlockModeProc --
|
|
sl@0
|
411 |
*
|
|
sl@0
|
412 |
* Set blocking or non-blocking mode on channel.
|
|
sl@0
|
413 |
*
|
|
sl@0
|
414 |
* Results:
|
|
sl@0
|
415 |
* 0 if successful, errno when failed.
|
|
sl@0
|
416 |
*
|
|
sl@0
|
417 |
* Side effects:
|
|
sl@0
|
418 |
* Sets the device into blocking or non-blocking mode.
|
|
sl@0
|
419 |
*
|
|
sl@0
|
420 |
*----------------------------------------------------------------------
|
|
sl@0
|
421 |
*/
|
|
sl@0
|
422 |
|
|
sl@0
|
423 |
static int
|
|
sl@0
|
424 |
ConsoleBlockModeProc(
|
|
sl@0
|
425 |
ClientData instanceData, /* Instance data for channel. */
|
|
sl@0
|
426 |
int mode) /* TCL_MODE_BLOCKING or
|
|
sl@0
|
427 |
* TCL_MODE_NONBLOCKING. */
|
|
sl@0
|
428 |
{
|
|
sl@0
|
429 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
430 |
|
|
sl@0
|
431 |
/*
|
|
sl@0
|
432 |
* Consoles on Windows can not be switched between blocking and nonblocking,
|
|
sl@0
|
433 |
* hence we have to emulate the behavior. This is done in the input
|
|
sl@0
|
434 |
* function by checking against a bit in the state. We set or unset the
|
|
sl@0
|
435 |
* bit here to cause the input function to emulate the correct behavior.
|
|
sl@0
|
436 |
*/
|
|
sl@0
|
437 |
|
|
sl@0
|
438 |
if (mode == TCL_MODE_NONBLOCKING) {
|
|
sl@0
|
439 |
infoPtr->flags |= CONSOLE_ASYNC;
|
|
sl@0
|
440 |
} else {
|
|
sl@0
|
441 |
infoPtr->flags &= ~(CONSOLE_ASYNC);
|
|
sl@0
|
442 |
}
|
|
sl@0
|
443 |
return 0;
|
|
sl@0
|
444 |
}
|
|
sl@0
|
445 |
|
|
sl@0
|
446 |
/*
|
|
sl@0
|
447 |
*----------------------------------------------------------------------
|
|
sl@0
|
448 |
*
|
|
sl@0
|
449 |
* ConsoleCloseProc --
|
|
sl@0
|
450 |
*
|
|
sl@0
|
451 |
* Closes a console based IO channel.
|
|
sl@0
|
452 |
*
|
|
sl@0
|
453 |
* Results:
|
|
sl@0
|
454 |
* 0 on success, errno otherwise.
|
|
sl@0
|
455 |
*
|
|
sl@0
|
456 |
* Side effects:
|
|
sl@0
|
457 |
* Closes the physical channel.
|
|
sl@0
|
458 |
*
|
|
sl@0
|
459 |
*----------------------------------------------------------------------
|
|
sl@0
|
460 |
*/
|
|
sl@0
|
461 |
|
|
sl@0
|
462 |
static int
|
|
sl@0
|
463 |
ConsoleCloseProc(
|
|
sl@0
|
464 |
ClientData instanceData, /* Pointer to ConsoleInfo structure. */
|
|
sl@0
|
465 |
Tcl_Interp *interp) /* For error reporting. */
|
|
sl@0
|
466 |
{
|
|
sl@0
|
467 |
ConsoleInfo *consolePtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
468 |
int errorCode;
|
|
sl@0
|
469 |
ConsoleInfo *infoPtr, **nextPtrPtr;
|
|
sl@0
|
470 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
471 |
DWORD exitCode;
|
|
sl@0
|
472 |
|
|
sl@0
|
473 |
errorCode = 0;
|
|
sl@0
|
474 |
|
|
sl@0
|
475 |
/*
|
|
sl@0
|
476 |
* Clean up the background thread if necessary. Note that this
|
|
sl@0
|
477 |
* must be done before we can close the file, since the
|
|
sl@0
|
478 |
* thread may be blocking trying to read from the console.
|
|
sl@0
|
479 |
*/
|
|
sl@0
|
480 |
|
|
sl@0
|
481 |
if (consolePtr->readThread) {
|
|
sl@0
|
482 |
|
|
sl@0
|
483 |
/*
|
|
sl@0
|
484 |
* The thread may already have closed on it's own. Check it's
|
|
sl@0
|
485 |
* exit code.
|
|
sl@0
|
486 |
*/
|
|
sl@0
|
487 |
|
|
sl@0
|
488 |
GetExitCodeThread(consolePtr->readThread, &exitCode);
|
|
sl@0
|
489 |
|
|
sl@0
|
490 |
if (exitCode == STILL_ACTIVE) {
|
|
sl@0
|
491 |
|
|
sl@0
|
492 |
/*
|
|
sl@0
|
493 |
* Set the stop event so that if the reader thread is blocked
|
|
sl@0
|
494 |
* in ConsoleReaderThread on WaitForMultipleEvents, it will exit
|
|
sl@0
|
495 |
* cleanly.
|
|
sl@0
|
496 |
*/
|
|
sl@0
|
497 |
|
|
sl@0
|
498 |
SetEvent(consolePtr->stopReader);
|
|
sl@0
|
499 |
|
|
sl@0
|
500 |
/*
|
|
sl@0
|
501 |
* Wait at most 20 milliseconds for the reader thread to close.
|
|
sl@0
|
502 |
*/
|
|
sl@0
|
503 |
|
|
sl@0
|
504 |
if (WaitForSingleObject(consolePtr->readThread, 20)
|
|
sl@0
|
505 |
== WAIT_TIMEOUT) {
|
|
sl@0
|
506 |
/*
|
|
sl@0
|
507 |
* Forcibly terminate the background thread as a last
|
|
sl@0
|
508 |
* resort. Note that we need to guard against
|
|
sl@0
|
509 |
* terminating the thread while it is in the middle of
|
|
sl@0
|
510 |
* Tcl_ThreadAlert because it won't be able to release
|
|
sl@0
|
511 |
* the notifier lock.
|
|
sl@0
|
512 |
*/
|
|
sl@0
|
513 |
|
|
sl@0
|
514 |
Tcl_MutexLock(&consoleMutex);
|
|
sl@0
|
515 |
|
|
sl@0
|
516 |
/* BUG: this leaks memory. */
|
|
sl@0
|
517 |
TerminateThread(consolePtr->readThread, 0);
|
|
sl@0
|
518 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
519 |
}
|
|
sl@0
|
520 |
}
|
|
sl@0
|
521 |
|
|
sl@0
|
522 |
CloseHandle(consolePtr->readThread);
|
|
sl@0
|
523 |
CloseHandle(consolePtr->readable);
|
|
sl@0
|
524 |
CloseHandle(consolePtr->startReader);
|
|
sl@0
|
525 |
CloseHandle(consolePtr->stopReader);
|
|
sl@0
|
526 |
consolePtr->readThread = NULL;
|
|
sl@0
|
527 |
}
|
|
sl@0
|
528 |
consolePtr->validMask &= ~TCL_READABLE;
|
|
sl@0
|
529 |
|
|
sl@0
|
530 |
/*
|
|
sl@0
|
531 |
* Wait for the writer thread to finish the current buffer, then
|
|
sl@0
|
532 |
* terminate the thread and close the handles. If the channel is
|
|
sl@0
|
533 |
* nonblocking, there should be no pending write operations.
|
|
sl@0
|
534 |
*/
|
|
sl@0
|
535 |
|
|
sl@0
|
536 |
if (consolePtr->writeThread) {
|
|
sl@0
|
537 |
if (consolePtr->toWrite) {
|
|
sl@0
|
538 |
/*
|
|
sl@0
|
539 |
* We only need to wait if there is something to write.
|
|
sl@0
|
540 |
* This may prevent infinite wait on exit. [python bug 216289]
|
|
sl@0
|
541 |
*/
|
|
sl@0
|
542 |
WaitForSingleObject(consolePtr->writable, INFINITE);
|
|
sl@0
|
543 |
}
|
|
sl@0
|
544 |
|
|
sl@0
|
545 |
/*
|
|
sl@0
|
546 |
* The thread may already have closed on it's own. Check it's
|
|
sl@0
|
547 |
* exit code.
|
|
sl@0
|
548 |
*/
|
|
sl@0
|
549 |
|
|
sl@0
|
550 |
GetExitCodeThread(consolePtr->writeThread, &exitCode);
|
|
sl@0
|
551 |
|
|
sl@0
|
552 |
if (exitCode == STILL_ACTIVE) {
|
|
sl@0
|
553 |
/*
|
|
sl@0
|
554 |
* Set the stop event so that if the reader thread is blocked
|
|
sl@0
|
555 |
* in ConsoleWriterThread on WaitForMultipleEvents, it will
|
|
sl@0
|
556 |
* exit cleanly.
|
|
sl@0
|
557 |
*/
|
|
sl@0
|
558 |
|
|
sl@0
|
559 |
SetEvent(consolePtr->stopWriter);
|
|
sl@0
|
560 |
|
|
sl@0
|
561 |
/*
|
|
sl@0
|
562 |
* Wait at most 20 milliseconds for the writer thread to close.
|
|
sl@0
|
563 |
*/
|
|
sl@0
|
564 |
|
|
sl@0
|
565 |
if (WaitForSingleObject(consolePtr->writeThread, 20)
|
|
sl@0
|
566 |
== WAIT_TIMEOUT) {
|
|
sl@0
|
567 |
/*
|
|
sl@0
|
568 |
* Forcibly terminate the background thread as a last
|
|
sl@0
|
569 |
* resort. Note that we need to guard against
|
|
sl@0
|
570 |
* terminating the thread while it is in the middle of
|
|
sl@0
|
571 |
* Tcl_ThreadAlert because it won't be able to release
|
|
sl@0
|
572 |
* the notifier lock.
|
|
sl@0
|
573 |
*/
|
|
sl@0
|
574 |
|
|
sl@0
|
575 |
Tcl_MutexLock(&consoleMutex);
|
|
sl@0
|
576 |
|
|
sl@0
|
577 |
/* BUG: this leaks memory. */
|
|
sl@0
|
578 |
TerminateThread(consolePtr->writeThread, 0);
|
|
sl@0
|
579 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
580 |
}
|
|
sl@0
|
581 |
}
|
|
sl@0
|
582 |
|
|
sl@0
|
583 |
CloseHandle(consolePtr->writeThread);
|
|
sl@0
|
584 |
CloseHandle(consolePtr->writable);
|
|
sl@0
|
585 |
CloseHandle(consolePtr->startWriter);
|
|
sl@0
|
586 |
CloseHandle(consolePtr->stopWriter);
|
|
sl@0
|
587 |
consolePtr->writeThread = NULL;
|
|
sl@0
|
588 |
}
|
|
sl@0
|
589 |
consolePtr->validMask &= ~TCL_WRITABLE;
|
|
sl@0
|
590 |
|
|
sl@0
|
591 |
|
|
sl@0
|
592 |
/*
|
|
sl@0
|
593 |
* Don't close the Win32 handle if the handle is a standard channel
|
|
sl@0
|
594 |
* during the thread exit process. Otherwise, one thread may kill
|
|
sl@0
|
595 |
* the stdio of another.
|
|
sl@0
|
596 |
*/
|
|
sl@0
|
597 |
|
|
sl@0
|
598 |
if (!TclInThreadExit()
|
|
sl@0
|
599 |
|| ((GetStdHandle(STD_INPUT_HANDLE) != consolePtr->handle)
|
|
sl@0
|
600 |
&& (GetStdHandle(STD_OUTPUT_HANDLE) != consolePtr->handle)
|
|
sl@0
|
601 |
&& (GetStdHandle(STD_ERROR_HANDLE) != consolePtr->handle))) {
|
|
sl@0
|
602 |
if (CloseHandle(consolePtr->handle) == FALSE) {
|
|
sl@0
|
603 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
604 |
errorCode = errno;
|
|
sl@0
|
605 |
}
|
|
sl@0
|
606 |
}
|
|
sl@0
|
607 |
|
|
sl@0
|
608 |
consolePtr->watchMask &= consolePtr->validMask;
|
|
sl@0
|
609 |
|
|
sl@0
|
610 |
/*
|
|
sl@0
|
611 |
* Remove the file from the list of watched files.
|
|
sl@0
|
612 |
*/
|
|
sl@0
|
613 |
|
|
sl@0
|
614 |
for (nextPtrPtr = &(tsdPtr->firstConsolePtr), infoPtr = *nextPtrPtr;
|
|
sl@0
|
615 |
infoPtr != NULL;
|
|
sl@0
|
616 |
nextPtrPtr = &infoPtr->nextPtr, infoPtr = *nextPtrPtr) {
|
|
sl@0
|
617 |
if (infoPtr == (ConsoleInfo *)consolePtr) {
|
|
sl@0
|
618 |
*nextPtrPtr = infoPtr->nextPtr;
|
|
sl@0
|
619 |
break;
|
|
sl@0
|
620 |
}
|
|
sl@0
|
621 |
}
|
|
sl@0
|
622 |
if (consolePtr->writeBuf != NULL) {
|
|
sl@0
|
623 |
ckfree(consolePtr->writeBuf);
|
|
sl@0
|
624 |
consolePtr->writeBuf = 0;
|
|
sl@0
|
625 |
}
|
|
sl@0
|
626 |
ckfree((char*) consolePtr);
|
|
sl@0
|
627 |
|
|
sl@0
|
628 |
return errorCode;
|
|
sl@0
|
629 |
}
|
|
sl@0
|
630 |
|
|
sl@0
|
631 |
/*
|
|
sl@0
|
632 |
*----------------------------------------------------------------------
|
|
sl@0
|
633 |
*
|
|
sl@0
|
634 |
* ConsoleInputProc --
|
|
sl@0
|
635 |
*
|
|
sl@0
|
636 |
* Reads input from the IO channel into the buffer given. Returns
|
|
sl@0
|
637 |
* count of how many bytes were actually read, and an error indication.
|
|
sl@0
|
638 |
*
|
|
sl@0
|
639 |
* Results:
|
|
sl@0
|
640 |
* A count of how many bytes were read is returned and an error
|
|
sl@0
|
641 |
* indication is returned in an output argument.
|
|
sl@0
|
642 |
*
|
|
sl@0
|
643 |
* Side effects:
|
|
sl@0
|
644 |
* Reads input from the actual channel.
|
|
sl@0
|
645 |
*
|
|
sl@0
|
646 |
*----------------------------------------------------------------------
|
|
sl@0
|
647 |
*/
|
|
sl@0
|
648 |
|
|
sl@0
|
649 |
static int
|
|
sl@0
|
650 |
ConsoleInputProc(
|
|
sl@0
|
651 |
ClientData instanceData, /* Console state. */
|
|
sl@0
|
652 |
char *buf, /* Where to store data read. */
|
|
sl@0
|
653 |
int bufSize, /* How much space is available
|
|
sl@0
|
654 |
* in the buffer? */
|
|
sl@0
|
655 |
int *errorCode) /* Where to store error code. */
|
|
sl@0
|
656 |
{
|
|
sl@0
|
657 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
658 |
DWORD count, bytesRead = 0;
|
|
sl@0
|
659 |
int result;
|
|
sl@0
|
660 |
|
|
sl@0
|
661 |
*errorCode = 0;
|
|
sl@0
|
662 |
|
|
sl@0
|
663 |
/*
|
|
sl@0
|
664 |
* Synchronize with the reader thread.
|
|
sl@0
|
665 |
*/
|
|
sl@0
|
666 |
|
|
sl@0
|
667 |
result = WaitForRead(infoPtr, (infoPtr->flags & CONSOLE_ASYNC) ? 0 : 1);
|
|
sl@0
|
668 |
|
|
sl@0
|
669 |
/*
|
|
sl@0
|
670 |
* If an error occurred, return immediately.
|
|
sl@0
|
671 |
*/
|
|
sl@0
|
672 |
|
|
sl@0
|
673 |
if (result == -1) {
|
|
sl@0
|
674 |
*errorCode = errno;
|
|
sl@0
|
675 |
return -1;
|
|
sl@0
|
676 |
}
|
|
sl@0
|
677 |
|
|
sl@0
|
678 |
if (infoPtr->readFlags & CONSOLE_BUFFERED) {
|
|
sl@0
|
679 |
/*
|
|
sl@0
|
680 |
* Data is stored in the buffer.
|
|
sl@0
|
681 |
*/
|
|
sl@0
|
682 |
|
|
sl@0
|
683 |
if (bufSize < (infoPtr->bytesRead - infoPtr->offset)) {
|
|
sl@0
|
684 |
memcpy(buf, &infoPtr->buffer[infoPtr->offset], (size_t) bufSize);
|
|
sl@0
|
685 |
bytesRead = bufSize;
|
|
sl@0
|
686 |
infoPtr->offset += bufSize;
|
|
sl@0
|
687 |
} else {
|
|
sl@0
|
688 |
memcpy(buf, &infoPtr->buffer[infoPtr->offset], (size_t) bufSize);
|
|
sl@0
|
689 |
bytesRead = infoPtr->bytesRead - infoPtr->offset;
|
|
sl@0
|
690 |
|
|
sl@0
|
691 |
/*
|
|
sl@0
|
692 |
* Reset the buffer
|
|
sl@0
|
693 |
*/
|
|
sl@0
|
694 |
|
|
sl@0
|
695 |
infoPtr->readFlags &= ~CONSOLE_BUFFERED;
|
|
sl@0
|
696 |
infoPtr->offset = 0;
|
|
sl@0
|
697 |
}
|
|
sl@0
|
698 |
|
|
sl@0
|
699 |
return bytesRead;
|
|
sl@0
|
700 |
}
|
|
sl@0
|
701 |
|
|
sl@0
|
702 |
/*
|
|
sl@0
|
703 |
* Attempt to read bufSize bytes. The read will return immediately
|
|
sl@0
|
704 |
* if there is any data available. Otherwise it will block until
|
|
sl@0
|
705 |
* at least one byte is available or an EOF occurs.
|
|
sl@0
|
706 |
*/
|
|
sl@0
|
707 |
|
|
sl@0
|
708 |
if (ReadConsole(infoPtr->handle, (LPVOID) buf, (DWORD) bufSize, &count,
|
|
sl@0
|
709 |
(LPOVERLAPPED) NULL) == TRUE) {
|
|
sl@0
|
710 |
buf[count] = '\0';
|
|
sl@0
|
711 |
return count;
|
|
sl@0
|
712 |
}
|
|
sl@0
|
713 |
|
|
sl@0
|
714 |
return -1;
|
|
sl@0
|
715 |
}
|
|
sl@0
|
716 |
|
|
sl@0
|
717 |
/*
|
|
sl@0
|
718 |
*----------------------------------------------------------------------
|
|
sl@0
|
719 |
*
|
|
sl@0
|
720 |
* ConsoleOutputProc --
|
|
sl@0
|
721 |
*
|
|
sl@0
|
722 |
* Writes the given output on the IO channel. Returns count of how
|
|
sl@0
|
723 |
* many characters were actually written, and an error indication.
|
|
sl@0
|
724 |
*
|
|
sl@0
|
725 |
* Results:
|
|
sl@0
|
726 |
* A count of how many characters were written is returned and an
|
|
sl@0
|
727 |
* error indication is returned in an output argument.
|
|
sl@0
|
728 |
*
|
|
sl@0
|
729 |
* Side effects:
|
|
sl@0
|
730 |
* Writes output on the actual channel.
|
|
sl@0
|
731 |
*
|
|
sl@0
|
732 |
*----------------------------------------------------------------------
|
|
sl@0
|
733 |
*/
|
|
sl@0
|
734 |
|
|
sl@0
|
735 |
static int
|
|
sl@0
|
736 |
ConsoleOutputProc(
|
|
sl@0
|
737 |
ClientData instanceData, /* Console state. */
|
|
sl@0
|
738 |
CONST char *buf, /* The data buffer. */
|
|
sl@0
|
739 |
int toWrite, /* How many bytes to write? */
|
|
sl@0
|
740 |
int *errorCode) /* Where to store error code. */
|
|
sl@0
|
741 |
{
|
|
sl@0
|
742 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
743 |
DWORD bytesWritten, timeout;
|
|
sl@0
|
744 |
|
|
sl@0
|
745 |
*errorCode = 0;
|
|
sl@0
|
746 |
timeout = (infoPtr->flags & CONSOLE_ASYNC) ? 0 : INFINITE;
|
|
sl@0
|
747 |
if (WaitForSingleObject(infoPtr->writable, timeout) == WAIT_TIMEOUT) {
|
|
sl@0
|
748 |
/*
|
|
sl@0
|
749 |
* The writer thread is blocked waiting for a write to complete
|
|
sl@0
|
750 |
* and the channel is in non-blocking mode.
|
|
sl@0
|
751 |
*/
|
|
sl@0
|
752 |
|
|
sl@0
|
753 |
errno = EAGAIN;
|
|
sl@0
|
754 |
goto error;
|
|
sl@0
|
755 |
}
|
|
sl@0
|
756 |
|
|
sl@0
|
757 |
/*
|
|
sl@0
|
758 |
* Check for a background error on the last write.
|
|
sl@0
|
759 |
*/
|
|
sl@0
|
760 |
|
|
sl@0
|
761 |
if (infoPtr->writeError) {
|
|
sl@0
|
762 |
TclWinConvertError(infoPtr->writeError);
|
|
sl@0
|
763 |
infoPtr->writeError = 0;
|
|
sl@0
|
764 |
goto error;
|
|
sl@0
|
765 |
}
|
|
sl@0
|
766 |
|
|
sl@0
|
767 |
if (infoPtr->flags & CONSOLE_ASYNC) {
|
|
sl@0
|
768 |
/*
|
|
sl@0
|
769 |
* The console is non-blocking, so copy the data into the output
|
|
sl@0
|
770 |
* buffer and restart the writer thread.
|
|
sl@0
|
771 |
*/
|
|
sl@0
|
772 |
|
|
sl@0
|
773 |
if (toWrite > infoPtr->writeBufLen) {
|
|
sl@0
|
774 |
/*
|
|
sl@0
|
775 |
* Reallocate the buffer to be large enough to hold the data.
|
|
sl@0
|
776 |
*/
|
|
sl@0
|
777 |
|
|
sl@0
|
778 |
if (infoPtr->writeBuf) {
|
|
sl@0
|
779 |
ckfree(infoPtr->writeBuf);
|
|
sl@0
|
780 |
}
|
|
sl@0
|
781 |
infoPtr->writeBufLen = toWrite;
|
|
sl@0
|
782 |
infoPtr->writeBuf = ckalloc((unsigned int) toWrite);
|
|
sl@0
|
783 |
}
|
|
sl@0
|
784 |
memcpy(infoPtr->writeBuf, buf, (size_t) toWrite);
|
|
sl@0
|
785 |
infoPtr->toWrite = toWrite;
|
|
sl@0
|
786 |
ResetEvent(infoPtr->writable);
|
|
sl@0
|
787 |
SetEvent(infoPtr->startWriter);
|
|
sl@0
|
788 |
bytesWritten = toWrite;
|
|
sl@0
|
789 |
} else {
|
|
sl@0
|
790 |
/*
|
|
sl@0
|
791 |
* In the blocking case, just try to write the buffer directly.
|
|
sl@0
|
792 |
* This avoids an unnecessary copy.
|
|
sl@0
|
793 |
*/
|
|
sl@0
|
794 |
|
|
sl@0
|
795 |
if (WriteFile(infoPtr->handle, (LPVOID) buf, (DWORD) toWrite,
|
|
sl@0
|
796 |
&bytesWritten, (LPOVERLAPPED) NULL) == FALSE) {
|
|
sl@0
|
797 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
798 |
goto error;
|
|
sl@0
|
799 |
}
|
|
sl@0
|
800 |
}
|
|
sl@0
|
801 |
return bytesWritten;
|
|
sl@0
|
802 |
|
|
sl@0
|
803 |
error:
|
|
sl@0
|
804 |
*errorCode = errno;
|
|
sl@0
|
805 |
return -1;
|
|
sl@0
|
806 |
|
|
sl@0
|
807 |
}
|
|
sl@0
|
808 |
|
|
sl@0
|
809 |
/*
|
|
sl@0
|
810 |
*----------------------------------------------------------------------
|
|
sl@0
|
811 |
*
|
|
sl@0
|
812 |
* ConsoleEventProc --
|
|
sl@0
|
813 |
*
|
|
sl@0
|
814 |
* This function is invoked by Tcl_ServiceEvent when a file event
|
|
sl@0
|
815 |
* reaches the front of the event queue. This procedure invokes
|
|
sl@0
|
816 |
* Tcl_NotifyChannel on the console.
|
|
sl@0
|
817 |
*
|
|
sl@0
|
818 |
* Results:
|
|
sl@0
|
819 |
* Returns 1 if the event was handled, meaning it should be removed
|
|
sl@0
|
820 |
* from the queue. Returns 0 if the event was not handled, meaning
|
|
sl@0
|
821 |
* it should stay on the queue. The only time the event isn't
|
|
sl@0
|
822 |
* handled is if the TCL_FILE_EVENTS flag bit isn't set.
|
|
sl@0
|
823 |
*
|
|
sl@0
|
824 |
* Side effects:
|
|
sl@0
|
825 |
* Whatever the notifier callback does.
|
|
sl@0
|
826 |
*
|
|
sl@0
|
827 |
*----------------------------------------------------------------------
|
|
sl@0
|
828 |
*/
|
|
sl@0
|
829 |
|
|
sl@0
|
830 |
static int
|
|
sl@0
|
831 |
ConsoleEventProc(
|
|
sl@0
|
832 |
Tcl_Event *evPtr, /* Event to service. */
|
|
sl@0
|
833 |
int flags) /* Flags that indicate what events to
|
|
sl@0
|
834 |
* handle, such as TCL_FILE_EVENTS. */
|
|
sl@0
|
835 |
{
|
|
sl@0
|
836 |
ConsoleEvent *consoleEvPtr = (ConsoleEvent *)evPtr;
|
|
sl@0
|
837 |
ConsoleInfo *infoPtr;
|
|
sl@0
|
838 |
int mask;
|
|
sl@0
|
839 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
840 |
|
|
sl@0
|
841 |
if (!(flags & TCL_FILE_EVENTS)) {
|
|
sl@0
|
842 |
return 0;
|
|
sl@0
|
843 |
}
|
|
sl@0
|
844 |
|
|
sl@0
|
845 |
/*
|
|
sl@0
|
846 |
* Search through the list of watched consoles for the one whose handle
|
|
sl@0
|
847 |
* matches the event. We do this rather than simply dereferencing
|
|
sl@0
|
848 |
* the handle in the event so that consoles can be deleted while the
|
|
sl@0
|
849 |
* event is in the queue.
|
|
sl@0
|
850 |
*/
|
|
sl@0
|
851 |
|
|
sl@0
|
852 |
for (infoPtr = tsdPtr->firstConsolePtr; infoPtr != NULL;
|
|
sl@0
|
853 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
854 |
if (consoleEvPtr->infoPtr == infoPtr) {
|
|
sl@0
|
855 |
infoPtr->flags &= ~(CONSOLE_PENDING);
|
|
sl@0
|
856 |
break;
|
|
sl@0
|
857 |
}
|
|
sl@0
|
858 |
}
|
|
sl@0
|
859 |
|
|
sl@0
|
860 |
/*
|
|
sl@0
|
861 |
* Remove stale events.
|
|
sl@0
|
862 |
*/
|
|
sl@0
|
863 |
|
|
sl@0
|
864 |
if (!infoPtr) {
|
|
sl@0
|
865 |
return 1;
|
|
sl@0
|
866 |
}
|
|
sl@0
|
867 |
|
|
sl@0
|
868 |
/*
|
|
sl@0
|
869 |
* Check to see if the console is readable. Note
|
|
sl@0
|
870 |
* that we can't tell if a console is writable, so we always report it
|
|
sl@0
|
871 |
* as being writable unless we have detected EOF.
|
|
sl@0
|
872 |
*/
|
|
sl@0
|
873 |
|
|
sl@0
|
874 |
mask = 0;
|
|
sl@0
|
875 |
if (infoPtr->watchMask & TCL_WRITABLE) {
|
|
sl@0
|
876 |
if (WaitForSingleObject(infoPtr->writable, 0) != WAIT_TIMEOUT) {
|
|
sl@0
|
877 |
mask = TCL_WRITABLE;
|
|
sl@0
|
878 |
}
|
|
sl@0
|
879 |
}
|
|
sl@0
|
880 |
|
|
sl@0
|
881 |
if (infoPtr->watchMask & TCL_READABLE) {
|
|
sl@0
|
882 |
if (WaitForRead(infoPtr, 0) >= 0) {
|
|
sl@0
|
883 |
if (infoPtr->readFlags & CONSOLE_EOF) {
|
|
sl@0
|
884 |
mask = TCL_READABLE;
|
|
sl@0
|
885 |
} else {
|
|
sl@0
|
886 |
mask |= TCL_READABLE;
|
|
sl@0
|
887 |
}
|
|
sl@0
|
888 |
}
|
|
sl@0
|
889 |
}
|
|
sl@0
|
890 |
|
|
sl@0
|
891 |
/*
|
|
sl@0
|
892 |
* Inform the channel of the events.
|
|
sl@0
|
893 |
*/
|
|
sl@0
|
894 |
|
|
sl@0
|
895 |
Tcl_NotifyChannel(infoPtr->channel, infoPtr->watchMask & mask);
|
|
sl@0
|
896 |
return 1;
|
|
sl@0
|
897 |
}
|
|
sl@0
|
898 |
|
|
sl@0
|
899 |
/*
|
|
sl@0
|
900 |
*----------------------------------------------------------------------
|
|
sl@0
|
901 |
*
|
|
sl@0
|
902 |
* ConsoleWatchProc --
|
|
sl@0
|
903 |
*
|
|
sl@0
|
904 |
* Called by the notifier to set up to watch for events on this
|
|
sl@0
|
905 |
* channel.
|
|
sl@0
|
906 |
*
|
|
sl@0
|
907 |
* Results:
|
|
sl@0
|
908 |
* None.
|
|
sl@0
|
909 |
*
|
|
sl@0
|
910 |
* Side effects:
|
|
sl@0
|
911 |
* None.
|
|
sl@0
|
912 |
*
|
|
sl@0
|
913 |
*----------------------------------------------------------------------
|
|
sl@0
|
914 |
*/
|
|
sl@0
|
915 |
|
|
sl@0
|
916 |
static void
|
|
sl@0
|
917 |
ConsoleWatchProc(
|
|
sl@0
|
918 |
ClientData instanceData, /* Console state. */
|
|
sl@0
|
919 |
int mask) /* What events to watch for, OR-ed
|
|
sl@0
|
920 |
* combination of TCL_READABLE,
|
|
sl@0
|
921 |
* TCL_WRITABLE and TCL_EXCEPTION. */
|
|
sl@0
|
922 |
{
|
|
sl@0
|
923 |
ConsoleInfo **nextPtrPtr, *ptr;
|
|
sl@0
|
924 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
925 |
int oldMask = infoPtr->watchMask;
|
|
sl@0
|
926 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
927 |
|
|
sl@0
|
928 |
/*
|
|
sl@0
|
929 |
* Since most of the work is handled by the background threads,
|
|
sl@0
|
930 |
* we just need to update the watchMask and then force the notifier
|
|
sl@0
|
931 |
* to poll once.
|
|
sl@0
|
932 |
*/
|
|
sl@0
|
933 |
|
|
sl@0
|
934 |
infoPtr->watchMask = mask & infoPtr->validMask;
|
|
sl@0
|
935 |
if (infoPtr->watchMask) {
|
|
sl@0
|
936 |
Tcl_Time blockTime = { 0, 0 };
|
|
sl@0
|
937 |
if (!oldMask) {
|
|
sl@0
|
938 |
infoPtr->nextPtr = tsdPtr->firstConsolePtr;
|
|
sl@0
|
939 |
tsdPtr->firstConsolePtr = infoPtr;
|
|
sl@0
|
940 |
}
|
|
sl@0
|
941 |
Tcl_SetMaxBlockTime(&blockTime);
|
|
sl@0
|
942 |
} else {
|
|
sl@0
|
943 |
if (oldMask) {
|
|
sl@0
|
944 |
/*
|
|
sl@0
|
945 |
* Remove the console from the list of watched consoles.
|
|
sl@0
|
946 |
*/
|
|
sl@0
|
947 |
|
|
sl@0
|
948 |
for (nextPtrPtr = &(tsdPtr->firstConsolePtr), ptr = *nextPtrPtr;
|
|
sl@0
|
949 |
ptr != NULL;
|
|
sl@0
|
950 |
nextPtrPtr = &ptr->nextPtr, ptr = *nextPtrPtr) {
|
|
sl@0
|
951 |
if (infoPtr == ptr) {
|
|
sl@0
|
952 |
*nextPtrPtr = ptr->nextPtr;
|
|
sl@0
|
953 |
break;
|
|
sl@0
|
954 |
}
|
|
sl@0
|
955 |
}
|
|
sl@0
|
956 |
}
|
|
sl@0
|
957 |
}
|
|
sl@0
|
958 |
}
|
|
sl@0
|
959 |
|
|
sl@0
|
960 |
/*
|
|
sl@0
|
961 |
*----------------------------------------------------------------------
|
|
sl@0
|
962 |
*
|
|
sl@0
|
963 |
* ConsoleGetHandleProc --
|
|
sl@0
|
964 |
*
|
|
sl@0
|
965 |
* Called from Tcl_GetChannelHandle to retrieve OS handles from
|
|
sl@0
|
966 |
* inside a command consoleline based channel.
|
|
sl@0
|
967 |
*
|
|
sl@0
|
968 |
* Results:
|
|
sl@0
|
969 |
* Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if
|
|
sl@0
|
970 |
* there is no handle for the specified direction.
|
|
sl@0
|
971 |
*
|
|
sl@0
|
972 |
* Side effects:
|
|
sl@0
|
973 |
* None.
|
|
sl@0
|
974 |
*
|
|
sl@0
|
975 |
*----------------------------------------------------------------------
|
|
sl@0
|
976 |
*/
|
|
sl@0
|
977 |
|
|
sl@0
|
978 |
static int
|
|
sl@0
|
979 |
ConsoleGetHandleProc(
|
|
sl@0
|
980 |
ClientData instanceData, /* The console state. */
|
|
sl@0
|
981 |
int direction, /* TCL_READABLE or TCL_WRITABLE */
|
|
sl@0
|
982 |
ClientData *handlePtr) /* Where to store the handle. */
|
|
sl@0
|
983 |
{
|
|
sl@0
|
984 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
985 |
|
|
sl@0
|
986 |
*handlePtr = (ClientData) infoPtr->handle;
|
|
sl@0
|
987 |
return TCL_OK;
|
|
sl@0
|
988 |
}
|
|
sl@0
|
989 |
|
|
sl@0
|
990 |
/*
|
|
sl@0
|
991 |
*----------------------------------------------------------------------
|
|
sl@0
|
992 |
*
|
|
sl@0
|
993 |
* WaitForRead --
|
|
sl@0
|
994 |
*
|
|
sl@0
|
995 |
* Wait until some data is available, the console is at
|
|
sl@0
|
996 |
* EOF or the reader thread is blocked waiting for data (if the
|
|
sl@0
|
997 |
* channel is in non-blocking mode).
|
|
sl@0
|
998 |
*
|
|
sl@0
|
999 |
* Results:
|
|
sl@0
|
1000 |
* Returns 1 if console is readable. Returns 0 if there is no data
|
|
sl@0
|
1001 |
* on the console, but there is buffered data. Returns -1 if an
|
|
sl@0
|
1002 |
* error occurred. If an error occurred, the threads may not
|
|
sl@0
|
1003 |
* be synchronized.
|
|
sl@0
|
1004 |
*
|
|
sl@0
|
1005 |
* Side effects:
|
|
sl@0
|
1006 |
* Updates the shared state flags. If no error occurred,
|
|
sl@0
|
1007 |
* the reader thread is blocked waiting for a signal from the
|
|
sl@0
|
1008 |
* main thread.
|
|
sl@0
|
1009 |
*
|
|
sl@0
|
1010 |
*----------------------------------------------------------------------
|
|
sl@0
|
1011 |
*/
|
|
sl@0
|
1012 |
|
|
sl@0
|
1013 |
static int
|
|
sl@0
|
1014 |
WaitForRead(
|
|
sl@0
|
1015 |
ConsoleInfo *infoPtr, /* Console state. */
|
|
sl@0
|
1016 |
int blocking) /* Indicates whether call should be
|
|
sl@0
|
1017 |
* blocking or not. */
|
|
sl@0
|
1018 |
{
|
|
sl@0
|
1019 |
DWORD timeout, count;
|
|
sl@0
|
1020 |
HANDLE *handle = infoPtr->handle;
|
|
sl@0
|
1021 |
INPUT_RECORD input;
|
|
sl@0
|
1022 |
|
|
sl@0
|
1023 |
while (1) {
|
|
sl@0
|
1024 |
/*
|
|
sl@0
|
1025 |
* Synchronize with the reader thread.
|
|
sl@0
|
1026 |
*/
|
|
sl@0
|
1027 |
|
|
sl@0
|
1028 |
timeout = blocking ? INFINITE : 0;
|
|
sl@0
|
1029 |
if (WaitForSingleObject(infoPtr->readable, timeout) == WAIT_TIMEOUT) {
|
|
sl@0
|
1030 |
/*
|
|
sl@0
|
1031 |
* The reader thread is blocked waiting for data and the channel
|
|
sl@0
|
1032 |
* is in non-blocking mode.
|
|
sl@0
|
1033 |
*/
|
|
sl@0
|
1034 |
errno = EAGAIN;
|
|
sl@0
|
1035 |
return -1;
|
|
sl@0
|
1036 |
}
|
|
sl@0
|
1037 |
|
|
sl@0
|
1038 |
/*
|
|
sl@0
|
1039 |
* At this point, the two threads are synchronized, so it is safe
|
|
sl@0
|
1040 |
* to access shared state.
|
|
sl@0
|
1041 |
*/
|
|
sl@0
|
1042 |
|
|
sl@0
|
1043 |
/*
|
|
sl@0
|
1044 |
* If the console has hit EOF, it is always readable.
|
|
sl@0
|
1045 |
*/
|
|
sl@0
|
1046 |
|
|
sl@0
|
1047 |
if (infoPtr->readFlags & CONSOLE_EOF) {
|
|
sl@0
|
1048 |
return 1;
|
|
sl@0
|
1049 |
}
|
|
sl@0
|
1050 |
|
|
sl@0
|
1051 |
if (PeekConsoleInput(handle, &input, 1, &count) == FALSE) {
|
|
sl@0
|
1052 |
/*
|
|
sl@0
|
1053 |
* Check to see if the peek failed because of EOF.
|
|
sl@0
|
1054 |
*/
|
|
sl@0
|
1055 |
|
|
sl@0
|
1056 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
1057 |
|
|
sl@0
|
1058 |
if (errno == EOF) {
|
|
sl@0
|
1059 |
infoPtr->readFlags |= CONSOLE_EOF;
|
|
sl@0
|
1060 |
return 1;
|
|
sl@0
|
1061 |
}
|
|
sl@0
|
1062 |
|
|
sl@0
|
1063 |
/*
|
|
sl@0
|
1064 |
* Ignore errors if there is data in the buffer.
|
|
sl@0
|
1065 |
*/
|
|
sl@0
|
1066 |
|
|
sl@0
|
1067 |
if (infoPtr->readFlags & CONSOLE_BUFFERED) {
|
|
sl@0
|
1068 |
return 0;
|
|
sl@0
|
1069 |
} else {
|
|
sl@0
|
1070 |
return -1;
|
|
sl@0
|
1071 |
}
|
|
sl@0
|
1072 |
}
|
|
sl@0
|
1073 |
|
|
sl@0
|
1074 |
/*
|
|
sl@0
|
1075 |
* If there is data in the buffer, the console must be
|
|
sl@0
|
1076 |
* readable (since it is a line-oriented device).
|
|
sl@0
|
1077 |
*/
|
|
sl@0
|
1078 |
|
|
sl@0
|
1079 |
if (infoPtr->readFlags & CONSOLE_BUFFERED) {
|
|
sl@0
|
1080 |
return 1;
|
|
sl@0
|
1081 |
}
|
|
sl@0
|
1082 |
|
|
sl@0
|
1083 |
|
|
sl@0
|
1084 |
/*
|
|
sl@0
|
1085 |
* There wasn't any data available, so reset the thread and
|
|
sl@0
|
1086 |
* try again.
|
|
sl@0
|
1087 |
*/
|
|
sl@0
|
1088 |
|
|
sl@0
|
1089 |
ResetEvent(infoPtr->readable);
|
|
sl@0
|
1090 |
SetEvent(infoPtr->startReader);
|
|
sl@0
|
1091 |
}
|
|
sl@0
|
1092 |
}
|
|
sl@0
|
1093 |
|
|
sl@0
|
1094 |
/*
|
|
sl@0
|
1095 |
*----------------------------------------------------------------------
|
|
sl@0
|
1096 |
*
|
|
sl@0
|
1097 |
* ConsoleReaderThread --
|
|
sl@0
|
1098 |
*
|
|
sl@0
|
1099 |
* This function runs in a separate thread and waits for input
|
|
sl@0
|
1100 |
* to become available on a console.
|
|
sl@0
|
1101 |
*
|
|
sl@0
|
1102 |
* Results:
|
|
sl@0
|
1103 |
* None.
|
|
sl@0
|
1104 |
*
|
|
sl@0
|
1105 |
* Side effects:
|
|
sl@0
|
1106 |
* Signals the main thread when input become available. May
|
|
sl@0
|
1107 |
* cause the main thread to wake up by posting a message. May
|
|
sl@0
|
1108 |
* one line from the console for each wait operation.
|
|
sl@0
|
1109 |
*
|
|
sl@0
|
1110 |
*----------------------------------------------------------------------
|
|
sl@0
|
1111 |
*/
|
|
sl@0
|
1112 |
|
|
sl@0
|
1113 |
static DWORD WINAPI
|
|
sl@0
|
1114 |
ConsoleReaderThread(LPVOID arg)
|
|
sl@0
|
1115 |
{
|
|
sl@0
|
1116 |
ConsoleInfo *infoPtr = (ConsoleInfo *)arg;
|
|
sl@0
|
1117 |
HANDLE *handle = infoPtr->handle;
|
|
sl@0
|
1118 |
DWORD count, waitResult;
|
|
sl@0
|
1119 |
HANDLE wEvents[2];
|
|
sl@0
|
1120 |
|
|
sl@0
|
1121 |
/* The first event takes precedence. */
|
|
sl@0
|
1122 |
wEvents[0] = infoPtr->stopReader;
|
|
sl@0
|
1123 |
wEvents[1] = infoPtr->startReader;
|
|
sl@0
|
1124 |
|
|
sl@0
|
1125 |
for (;;) {
|
|
sl@0
|
1126 |
/*
|
|
sl@0
|
1127 |
* Wait for the main thread to signal before attempting to wait.
|
|
sl@0
|
1128 |
*/
|
|
sl@0
|
1129 |
|
|
sl@0
|
1130 |
waitResult = WaitForMultipleObjects(2, wEvents, FALSE, INFINITE);
|
|
sl@0
|
1131 |
|
|
sl@0
|
1132 |
if (waitResult != (WAIT_OBJECT_0 + 1)) {
|
|
sl@0
|
1133 |
/*
|
|
sl@0
|
1134 |
* The start event was not signaled. It must be the stop event
|
|
sl@0
|
1135 |
* or an error, so exit this thread.
|
|
sl@0
|
1136 |
*/
|
|
sl@0
|
1137 |
|
|
sl@0
|
1138 |
break;
|
|
sl@0
|
1139 |
}
|
|
sl@0
|
1140 |
|
|
sl@0
|
1141 |
count = 0;
|
|
sl@0
|
1142 |
|
|
sl@0
|
1143 |
/*
|
|
sl@0
|
1144 |
* Look for data on the console, but first ignore any events
|
|
sl@0
|
1145 |
* that are not KEY_EVENTs
|
|
sl@0
|
1146 |
*/
|
|
sl@0
|
1147 |
if (ReadConsoleA(handle, infoPtr->buffer, CONSOLE_BUFFER_SIZE,
|
|
sl@0
|
1148 |
(LPDWORD) &infoPtr->bytesRead, NULL) != FALSE) {
|
|
sl@0
|
1149 |
/*
|
|
sl@0
|
1150 |
* Data was stored in the buffer.
|
|
sl@0
|
1151 |
*/
|
|
sl@0
|
1152 |
|
|
sl@0
|
1153 |
infoPtr->readFlags |= CONSOLE_BUFFERED;
|
|
sl@0
|
1154 |
} else {
|
|
sl@0
|
1155 |
DWORD err;
|
|
sl@0
|
1156 |
err = GetLastError();
|
|
sl@0
|
1157 |
|
|
sl@0
|
1158 |
if (err == EOF) {
|
|
sl@0
|
1159 |
infoPtr->readFlags = CONSOLE_EOF;
|
|
sl@0
|
1160 |
}
|
|
sl@0
|
1161 |
}
|
|
sl@0
|
1162 |
|
|
sl@0
|
1163 |
/*
|
|
sl@0
|
1164 |
* Signal the main thread by signalling the readable event and
|
|
sl@0
|
1165 |
* then waking up the notifier thread.
|
|
sl@0
|
1166 |
*/
|
|
sl@0
|
1167 |
|
|
sl@0
|
1168 |
SetEvent(infoPtr->readable);
|
|
sl@0
|
1169 |
|
|
sl@0
|
1170 |
/*
|
|
sl@0
|
1171 |
* Alert the foreground thread. Note that we need to treat this like
|
|
sl@0
|
1172 |
* a critical section so the foreground thread does not terminate
|
|
sl@0
|
1173 |
* this thread while we are holding a mutex in the notifier code.
|
|
sl@0
|
1174 |
*/
|
|
sl@0
|
1175 |
|
|
sl@0
|
1176 |
Tcl_MutexLock(&consoleMutex);
|
|
sl@0
|
1177 |
if (infoPtr->threadId != NULL) {
|
|
sl@0
|
1178 |
/* TIP #218. When in flight ignore the event, no one will receive it anyway */
|
|
sl@0
|
1179 |
Tcl_ThreadAlert(infoPtr->threadId);
|
|
sl@0
|
1180 |
}
|
|
sl@0
|
1181 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
1182 |
}
|
|
sl@0
|
1183 |
|
|
sl@0
|
1184 |
return 0;
|
|
sl@0
|
1185 |
}
|
|
sl@0
|
1186 |
|
|
sl@0
|
1187 |
/*
|
|
sl@0
|
1188 |
*----------------------------------------------------------------------
|
|
sl@0
|
1189 |
*
|
|
sl@0
|
1190 |
* ConsoleWriterThread --
|
|
sl@0
|
1191 |
*
|
|
sl@0
|
1192 |
* This function runs in a separate thread and writes data
|
|
sl@0
|
1193 |
* onto a console.
|
|
sl@0
|
1194 |
*
|
|
sl@0
|
1195 |
* Results:
|
|
sl@0
|
1196 |
* Always returns 0.
|
|
sl@0
|
1197 |
*
|
|
sl@0
|
1198 |
* Side effects:
|
|
sl@0
|
1199 |
* Signals the main thread when an output operation is completed.
|
|
sl@0
|
1200 |
* May cause the main thread to wake up by posting a message.
|
|
sl@0
|
1201 |
*
|
|
sl@0
|
1202 |
*----------------------------------------------------------------------
|
|
sl@0
|
1203 |
*/
|
|
sl@0
|
1204 |
|
|
sl@0
|
1205 |
static DWORD WINAPI
|
|
sl@0
|
1206 |
ConsoleWriterThread(LPVOID arg)
|
|
sl@0
|
1207 |
{
|
|
sl@0
|
1208 |
|
|
sl@0
|
1209 |
ConsoleInfo *infoPtr = (ConsoleInfo *)arg;
|
|
sl@0
|
1210 |
HANDLE *handle = infoPtr->handle;
|
|
sl@0
|
1211 |
DWORD count, toWrite, waitResult;
|
|
sl@0
|
1212 |
char *buf;
|
|
sl@0
|
1213 |
HANDLE wEvents[2];
|
|
sl@0
|
1214 |
|
|
sl@0
|
1215 |
/* The first event takes precedence. */
|
|
sl@0
|
1216 |
wEvents[0] = infoPtr->stopWriter;
|
|
sl@0
|
1217 |
wEvents[1] = infoPtr->startWriter;
|
|
sl@0
|
1218 |
|
|
sl@0
|
1219 |
for (;;) {
|
|
sl@0
|
1220 |
/*
|
|
sl@0
|
1221 |
* Wait for the main thread to signal before attempting to write.
|
|
sl@0
|
1222 |
*/
|
|
sl@0
|
1223 |
|
|
sl@0
|
1224 |
waitResult = WaitForMultipleObjects(2, wEvents, FALSE, INFINITE);
|
|
sl@0
|
1225 |
|
|
sl@0
|
1226 |
if (waitResult != (WAIT_OBJECT_0 + 1)) {
|
|
sl@0
|
1227 |
/*
|
|
sl@0
|
1228 |
* The start event was not signaled. It must be the stop event
|
|
sl@0
|
1229 |
* or an error, so exit this thread.
|
|
sl@0
|
1230 |
*/
|
|
sl@0
|
1231 |
|
|
sl@0
|
1232 |
break;
|
|
sl@0
|
1233 |
}
|
|
sl@0
|
1234 |
|
|
sl@0
|
1235 |
buf = infoPtr->writeBuf;
|
|
sl@0
|
1236 |
toWrite = infoPtr->toWrite;
|
|
sl@0
|
1237 |
|
|
sl@0
|
1238 |
/*
|
|
sl@0
|
1239 |
* Loop until all of the bytes are written or an error occurs.
|
|
sl@0
|
1240 |
*/
|
|
sl@0
|
1241 |
|
|
sl@0
|
1242 |
while (toWrite > 0) {
|
|
sl@0
|
1243 |
if (WriteConsoleA(handle, buf, toWrite, &count, NULL) == FALSE) {
|
|
sl@0
|
1244 |
infoPtr->writeError = GetLastError();
|
|
sl@0
|
1245 |
break;
|
|
sl@0
|
1246 |
} else {
|
|
sl@0
|
1247 |
toWrite -= count;
|
|
sl@0
|
1248 |
buf += count;
|
|
sl@0
|
1249 |
}
|
|
sl@0
|
1250 |
}
|
|
sl@0
|
1251 |
|
|
sl@0
|
1252 |
/*
|
|
sl@0
|
1253 |
* Signal the main thread by signalling the writable event and
|
|
sl@0
|
1254 |
* then waking up the notifier thread.
|
|
sl@0
|
1255 |
*/
|
|
sl@0
|
1256 |
|
|
sl@0
|
1257 |
SetEvent(infoPtr->writable);
|
|
sl@0
|
1258 |
|
|
sl@0
|
1259 |
/*
|
|
sl@0
|
1260 |
* Alert the foreground thread. Note that we need to treat this like
|
|
sl@0
|
1261 |
* a critical section so the foreground thread does not terminate
|
|
sl@0
|
1262 |
* this thread while we are holding a mutex in the notifier code.
|
|
sl@0
|
1263 |
*/
|
|
sl@0
|
1264 |
|
|
sl@0
|
1265 |
Tcl_MutexLock(&consoleMutex);
|
|
sl@0
|
1266 |
if (infoPtr->threadId != NULL) {
|
|
sl@0
|
1267 |
/* TIP #218. When in flight ignore the event, no one will receive it anyway */
|
|
sl@0
|
1268 |
Tcl_ThreadAlert(infoPtr->threadId);
|
|
sl@0
|
1269 |
}
|
|
sl@0
|
1270 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
1271 |
}
|
|
sl@0
|
1272 |
|
|
sl@0
|
1273 |
return 0;
|
|
sl@0
|
1274 |
}
|
|
sl@0
|
1275 |
|
|
sl@0
|
1276 |
|
|
sl@0
|
1277 |
|
|
sl@0
|
1278 |
/*
|
|
sl@0
|
1279 |
*----------------------------------------------------------------------
|
|
sl@0
|
1280 |
*
|
|
sl@0
|
1281 |
* TclWinOpenConsoleChannel --
|
|
sl@0
|
1282 |
*
|
|
sl@0
|
1283 |
* Constructs a Console channel for the specified standard OS handle.
|
|
sl@0
|
1284 |
* This is a helper function to break up the construction of
|
|
sl@0
|
1285 |
* channels into File, Console, or Serial.
|
|
sl@0
|
1286 |
*
|
|
sl@0
|
1287 |
* Results:
|
|
sl@0
|
1288 |
* Returns the new channel, or NULL.
|
|
sl@0
|
1289 |
*
|
|
sl@0
|
1290 |
* Side effects:
|
|
sl@0
|
1291 |
* May open the channel
|
|
sl@0
|
1292 |
*
|
|
sl@0
|
1293 |
*----------------------------------------------------------------------
|
|
sl@0
|
1294 |
*/
|
|
sl@0
|
1295 |
|
|
sl@0
|
1296 |
Tcl_Channel
|
|
sl@0
|
1297 |
TclWinOpenConsoleChannel(handle, channelName, permissions)
|
|
sl@0
|
1298 |
HANDLE handle;
|
|
sl@0
|
1299 |
char *channelName;
|
|
sl@0
|
1300 |
int permissions;
|
|
sl@0
|
1301 |
{
|
|
sl@0
|
1302 |
char encoding[4 + TCL_INTEGER_SPACE];
|
|
sl@0
|
1303 |
ConsoleInfo *infoPtr;
|
|
sl@0
|
1304 |
DWORD id, modes;
|
|
sl@0
|
1305 |
|
|
sl@0
|
1306 |
ConsoleInit();
|
|
sl@0
|
1307 |
|
|
sl@0
|
1308 |
/*
|
|
sl@0
|
1309 |
* See if a channel with this handle already exists.
|
|
sl@0
|
1310 |
*/
|
|
sl@0
|
1311 |
|
|
sl@0
|
1312 |
infoPtr = (ConsoleInfo *) ckalloc((unsigned) sizeof(ConsoleInfo));
|
|
sl@0
|
1313 |
memset(infoPtr, 0, sizeof(ConsoleInfo));
|
|
sl@0
|
1314 |
|
|
sl@0
|
1315 |
infoPtr->validMask = permissions;
|
|
sl@0
|
1316 |
infoPtr->handle = handle;
|
|
sl@0
|
1317 |
infoPtr->channel = (Tcl_Channel) NULL;
|
|
sl@0
|
1318 |
|
|
sl@0
|
1319 |
wsprintfA(encoding, "cp%d", GetConsoleCP());
|
|
sl@0
|
1320 |
|
|
sl@0
|
1321 |
infoPtr->threadId = Tcl_GetCurrentThread();
|
|
sl@0
|
1322 |
|
|
sl@0
|
1323 |
/*
|
|
sl@0
|
1324 |
* Use the pointer for the name of the result channel.
|
|
sl@0
|
1325 |
* This keeps the channel names unique, since some may share
|
|
sl@0
|
1326 |
* handles (stdin/stdout/stderr for instance).
|
|
sl@0
|
1327 |
*/
|
|
sl@0
|
1328 |
|
|
sl@0
|
1329 |
wsprintfA(channelName, "file%lx", (int) infoPtr);
|
|
sl@0
|
1330 |
|
|
sl@0
|
1331 |
infoPtr->channel = Tcl_CreateChannel(&consoleChannelType, channelName,
|
|
sl@0
|
1332 |
(ClientData) infoPtr, permissions);
|
|
sl@0
|
1333 |
|
|
sl@0
|
1334 |
if (permissions & TCL_READABLE) {
|
|
sl@0
|
1335 |
/*
|
|
sl@0
|
1336 |
* Make sure the console input buffer is ready for only character
|
|
sl@0
|
1337 |
* input notifications and the buffer is set for line buffering.
|
|
sl@0
|
1338 |
* IOW, we only want to catch when complete lines are ready for
|
|
sl@0
|
1339 |
* reading.
|
|
sl@0
|
1340 |
*/
|
|
sl@0
|
1341 |
GetConsoleMode(infoPtr->handle, &modes);
|
|
sl@0
|
1342 |
modes &= ~(ENABLE_WINDOW_INPUT | ENABLE_MOUSE_INPUT);
|
|
sl@0
|
1343 |
modes |= ENABLE_LINE_INPUT;
|
|
sl@0
|
1344 |
SetConsoleMode(infoPtr->handle, modes);
|
|
sl@0
|
1345 |
|
|
sl@0
|
1346 |
infoPtr->readable = CreateEvent(NULL, TRUE, TRUE, NULL);
|
|
sl@0
|
1347 |
infoPtr->startReader = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
sl@0
|
1348 |
infoPtr->stopReader = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
sl@0
|
1349 |
infoPtr->readThread = CreateThread(NULL, 256, ConsoleReaderThread,
|
|
sl@0
|
1350 |
infoPtr, 0, &id);
|
|
sl@0
|
1351 |
SetThreadPriority(infoPtr->readThread, THREAD_PRIORITY_HIGHEST);
|
|
sl@0
|
1352 |
}
|
|
sl@0
|
1353 |
|
|
sl@0
|
1354 |
if (permissions & TCL_WRITABLE) {
|
|
sl@0
|
1355 |
infoPtr->writable = CreateEvent(NULL, TRUE, TRUE, NULL);
|
|
sl@0
|
1356 |
infoPtr->startWriter = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
sl@0
|
1357 |
infoPtr->stopWriter = CreateEvent(NULL, FALSE, FALSE, NULL);
|
|
sl@0
|
1358 |
infoPtr->writeThread = CreateThread(NULL, 256, ConsoleWriterThread,
|
|
sl@0
|
1359 |
infoPtr, 0, &id);
|
|
sl@0
|
1360 |
SetThreadPriority(infoPtr->writeThread, THREAD_PRIORITY_HIGHEST);
|
|
sl@0
|
1361 |
}
|
|
sl@0
|
1362 |
|
|
sl@0
|
1363 |
/*
|
|
sl@0
|
1364 |
* Files have default translation of AUTO and ^Z eof char, which
|
|
sl@0
|
1365 |
* means that a ^Z will be accepted as EOF when reading.
|
|
sl@0
|
1366 |
*/
|
|
sl@0
|
1367 |
|
|
sl@0
|
1368 |
Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto");
|
|
sl@0
|
1369 |
Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "\032 {}");
|
|
sl@0
|
1370 |
Tcl_SetChannelOption(NULL, infoPtr->channel, "-encoding", encoding);
|
|
sl@0
|
1371 |
|
|
sl@0
|
1372 |
return infoPtr->channel;
|
|
sl@0
|
1373 |
}
|
|
sl@0
|
1374 |
|
|
sl@0
|
1375 |
/*
|
|
sl@0
|
1376 |
*----------------------------------------------------------------------
|
|
sl@0
|
1377 |
*
|
|
sl@0
|
1378 |
* ConsoleThreadActionProc --
|
|
sl@0
|
1379 |
*
|
|
sl@0
|
1380 |
* Insert or remove any thread local refs to this channel.
|
|
sl@0
|
1381 |
*
|
|
sl@0
|
1382 |
* Results:
|
|
sl@0
|
1383 |
* None.
|
|
sl@0
|
1384 |
*
|
|
sl@0
|
1385 |
* Side effects:
|
|
sl@0
|
1386 |
* Changes thread local list of valid channels.
|
|
sl@0
|
1387 |
*
|
|
sl@0
|
1388 |
*----------------------------------------------------------------------
|
|
sl@0
|
1389 |
*/
|
|
sl@0
|
1390 |
|
|
sl@0
|
1391 |
static void
|
|
sl@0
|
1392 |
ConsoleThreadActionProc (instanceData, action)
|
|
sl@0
|
1393 |
ClientData instanceData;
|
|
sl@0
|
1394 |
int action;
|
|
sl@0
|
1395 |
{
|
|
sl@0
|
1396 |
ConsoleInfo *infoPtr = (ConsoleInfo *) instanceData;
|
|
sl@0
|
1397 |
|
|
sl@0
|
1398 |
/* We do not access firstConsolePtr in the thread structures. This is
|
|
sl@0
|
1399 |
* not for all serials managed by the thread, but only those we are
|
|
sl@0
|
1400 |
* watching. Removal of the filevent handlers before transfer thus
|
|
sl@0
|
1401 |
* takes care of this structure.
|
|
sl@0
|
1402 |
*/
|
|
sl@0
|
1403 |
|
|
sl@0
|
1404 |
Tcl_MutexLock(&consoleMutex);
|
|
sl@0
|
1405 |
if (action == TCL_CHANNEL_THREAD_INSERT) {
|
|
sl@0
|
1406 |
/* We can't copy the thread information from the channel when
|
|
sl@0
|
1407 |
* the channel is created. At this time the channel back
|
|
sl@0
|
1408 |
* pointer has not been set yet. However in that case the
|
|
sl@0
|
1409 |
* threadId has already been set by TclpCreateCommandChannel
|
|
sl@0
|
1410 |
* itself, so the structure is still good.
|
|
sl@0
|
1411 |
*/
|
|
sl@0
|
1412 |
|
|
sl@0
|
1413 |
ConsoleInit ();
|
|
sl@0
|
1414 |
if (infoPtr->channel != NULL) {
|
|
sl@0
|
1415 |
infoPtr->threadId = Tcl_GetChannelThread (infoPtr->channel);
|
|
sl@0
|
1416 |
}
|
|
sl@0
|
1417 |
} else {
|
|
sl@0
|
1418 |
infoPtr->threadId = NULL;
|
|
sl@0
|
1419 |
}
|
|
sl@0
|
1420 |
Tcl_MutexUnlock(&consoleMutex);
|
|
sl@0
|
1421 |
}
|