Tcl Source Code: View Ticket

Ticket UUID:	a12ad5c4bd7efcf22906c25feb9a7bebb0aadc5a
Title:	buffer allocation on every call to Write in tclIO.c
Type:	Bug	Version:
Submitter:	pooryorick	Created on:	2022-04-20 12:03:02
Subsystem:	25. Channel System	Assigned To:	pooryorick
Priority:	5 Medium	Severity:	Minor
Status:	Closed	Last Modified:	2023-02-13 15:58:52
Resolution:	Fixed	Closed By:	jan.nijtmans
		Closed on:	2023-02-13 15:58:52
Description:	In 2014, in order to resolve segmentation faults tested for by iocmd-21.[12], commit [13886141d8b3acc7] added a reference counting scheme for channel buffers. This scheme mostly negates the buffer recycling that `RecycleBuffer()` attempts. A better fix was not readily available, and the cost of allocating new buffers is probably usually insignificant compared to the cost of IO anyway. The result since then is that for every 4096 bytes written to a channel, a new buffer is allocated.
User Comments:	pooryorick added on 2022-04-20 12:10:48: Fixed in [a62764efd4fcdad3] and [d699b9b1453b6734].