diff options
Diffstat (limited to 'generic/tclIO.c')
-rw-r--r-- | generic/tclIO.c | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c index 4452ae9..93ac937 100644 --- a/generic/tclIO.c +++ b/generic/tclIO.c @@ -8853,34 +8853,22 @@ DoRead( break; } - /* If there is no full buffer, attempt to create and/or fill one. */ - - while (!IsBufferFull(bufPtr)) { - int code; + /* + * If there is not enough data in the buffers to possibly + * complete the read, then go get more. + */ + if (bufPtr == NULL || BytesLeft(bufPtr) < bytesToRead) { moreData: - code = GetInput(chanPtr); - bufPtr = statePtr->inQueueHead; - - assert (bufPtr != NULL); - - if (GotFlag(statePtr, CHANNEL_EOF|CHANNEL_BLOCKED)) { - /* Further reads cannot do any more */ - break; - } - - if (code) { + if (GetInput(chanPtr)) { /* Read error */ UpdateInterest(chanPtr); TclChannelRelease((Tcl_Channel)chanPtr); return -1; } - - assert (IsBufferFull(bufPtr)); + bufPtr = statePtr->inQueueHead; } - assert (bufPtr != NULL); - bytesRead = BytesLeft(bufPtr); bytesWritten = bytesToRead; |