diff options
Diffstat (limited to 'win/tclWinChan.c')
| -rw-r--r-- | win/tclWinChan.c | 50 |
1 files changed, 47 insertions, 3 deletions
diff --git a/win/tclWinChan.c b/win/tclWinChan.c index 51d418a..78b7daf 100644 --- a/win/tclWinChan.c +++ b/win/tclWinChan.c @@ -9,7 +9,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclWinChan.c,v 1.14 2001/08/30 08:53:15 vincentdarley Exp $ + * RCS: @(#) $Id: tclWinChan.c,v 1.15 2001/09/07 17:08:50 andreas_kupries Exp $ */ #include "tclWinInt.h" @@ -40,6 +40,8 @@ typedef struct FileInfo { int flags; /* State flags, see above for a list. */ HANDLE handle; /* Input/output file. */ struct FileInfo *nextPtr; /* Pointer to next registered file. */ + int dirty; /* Boolean flag. Set if the OS may have data + * pending on the channel */ } FileInfo; typedef struct ThreadSpecificData { @@ -557,7 +559,7 @@ FileOutputProc(instanceData, buf, toWrite, errorCode) *errorCode = errno; return -1; } - FlushFileBuffers(infoPtr->handle); + infoPtr->dirty = 1; return bytesWritten; } @@ -1122,7 +1124,7 @@ TclWinOpenFileChannel(handle, channelName, permissions, appendMode) infoPtr->watchMask = 0; infoPtr->flags = appendMode; infoPtr->handle = handle; - + infoPtr->dirty = 0; wsprintfA(channelName, "file%lx", (int) infoPtr); infoPtr->channel = Tcl_CreateChannel(&fileChannelType, channelName, @@ -1139,3 +1141,45 @@ TclWinOpenFileChannel(handle, channelName, permissions, appendMode) return infoPtr->channel; } + +/* + *---------------------------------------------------------------------- + * + * TclWinOpenFileChannel -- + * + * Constructs a File channel for the specified standard OS handle. + * This is a helper function to break up the construction of + * channels into File, Console, or Serial. + * + * Results: + * Returns the new channel, or NULL. + * + * Side effects: + * May open the channel and may cause creation of a file on the + * file system. + * + *---------------------------------------------------------------------- + */ + +void +TclWinFlushDirtyChannels () +{ + FileInfo *infoPtr; + ThreadSpecificData *tsdPtr; + + tsdPtr = FileInit(); + + /* + * Flush all channels which are dirty, i.e. may have data pending + * in the OS + */ + + for (infoPtr = tsdPtr->firstFilePtr; + infoPtr != NULL; + infoPtr = infoPtr->nextPtr) { + if (infoPtr->dirty) { + FlushFileBuffers(infoPtr->handle); + infoPtr->dirty = 0; + } + } +} |