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| author | andreas_kupries <akupries@shaw.ca> | 2008-04-07 19:41:59 (GMT) |
|---|---|---|
| committer | andreas_kupries <akupries@shaw.ca> | 2008-04-07 19:41:59 (GMT) |
| commit | 4ef1119b6a57574cc2bc49f1c5f2060dc56509ea (patch) | |
| tree | bf94974f5cd54afd750cbdaab55a4b933b118c9b /generic/tclIO.c | |
| parent | 871b84cdfe3b833bb5d1496f8d8bc70013257619 (diff) | |
| download | tcl-4ef1119b6a57574cc2bc49f1c5f2060dc56509ea.zip tcl-4ef1119b6a57574cc2bc49f1c5f2060dc56509ea.tar.gz tcl-4ef1119b6a57574cc2bc49f1c5f2060dc56509ea.tar.bz2 | |
* generic/tclIO.c (BUSY_STATE, CheckChannelErrors,
TclCopyChannel): New macro, and the places using it. This change
allows for bi-directional fcopy on channels. Thanks to Alexandre
Ferrieux <ferrieux@users.sourceforge.net> for the patch.
Diffstat (limited to 'generic/tclIO.c')
| -rw-r--r-- | generic/tclIO.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c index eadd56b..783011f 100644 --- a/generic/tclIO.c +++ b/generic/tclIO.c @@ -10,7 +10,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclIO.c,v 1.137.2.2 2008/04/03 18:06:24 andreas_kupries Exp $ + * RCS: @(#) $Id: tclIO.c,v 1.137.2.3 2008/04/07 19:42:03 andreas_kupries Exp $ */ #include "tclInt.h" @@ -221,6 +221,10 @@ static Tcl_ObjType tclChannelType = { #define SET_CHANNELSTATE(objPtr, storePtr) \ ((objPtr)->internalRep.otherValuePtr = (void *) (storePtr)) +#define BUSY_STATE(st,fl) \ + ((st)->csPtr && \ + ( (((fl)&TCL_READABLE)&&((st)->csPtr->readPtr ==(st)->topChanPtr)) || \ + (((fl)&TCL_WRITABLE)&&((st)->csPtr->writePtr==(st)->topChanPtr)))) /* *--------------------------------------------------------------------------- @@ -6698,7 +6702,7 @@ CheckChannelErrors( * retrieving and transforming the data to copy. */ - if ((statePtr->csPtr != NULL) && ((flags & CHANNEL_RAW_MODE) == 0)) { + if (BUSY_STATE(statePtr,flags) && ((flags & CHANNEL_RAW_MODE) == 0)) { Tcl_SetErrno(EBUSY); return -1; } @@ -8429,14 +8433,14 @@ TclCopyChannel( inStatePtr = inPtr->state; outStatePtr = outPtr->state; - if (inStatePtr->csPtr) { + if (BUSY_STATE(inStatePtr,TCL_READABLE)) { if (interp) { Tcl_AppendResult(interp, "channel \"", Tcl_GetChannelName(inChan), "\" is busy", NULL); } return TCL_ERROR; } - if (outStatePtr->csPtr) { + if (BUSY_STATE(outStatePtr,TCL_WRITABLE)) { if (interp) { Tcl_AppendResult(interp, "channel \"", Tcl_GetChannelName(outChan), "\" is busy", NULL); |