Mercurial > hg > nginx
view auto/lib/google-perftools/conf @ 9007:2dc4203d812c quic
QUIC: fixed in-flight bytes accounting.
Initially, frames are genereated and stored in ctx->frames.
Next, ngx_quic_output() collects frames to be sent in in ctx->sending.
On failure, ngx_quic_revert_sned() returns frames into ctx->frames.
On success, the ngx_quic_commit_send() moves ack-eliciting frames into
ctx->sent and frees non-ack-eliciting frames.
This function also updates in-flight bytes counter, so only actually sent
frames are accounted.
The counter is decremented in the following cases:
- acknowledgment is received
- packet was declared lost
- we are discarding context completely
In each of this cases frame is removed from ctx->sent queue and in-flight
counter is accordingly decremented.
The patch fixes the case of discarding context - only removing frames
from ctx->sent must be followed by in-flight bytes counter decrement,
otherwise cg->in_flight could experience type underflow.
The issue appeared in b1676cd64dc9.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Wed, 09 Feb 2022 15:51:42 +0300 |
parents | f7e79596baf2 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. ngx_feature="Google perftools" ngx_feature_name= ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs="-lprofiler" ngx_feature_test="void ProfilerStop(void); ProfilerStop()" . auto/feature if [ $ngx_found = no ]; then # FreeBSD port ngx_feature="Google perftools in /usr/local/" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lprofiler" else ngx_feature_libs="-L/usr/local/lib -lprofiler" fi . auto/feature fi if [ $ngx_found = no ]; then # MacPorts ngx_feature="Google perftools in /opt/local/" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lprofiler" else ngx_feature_libs="-L/opt/local/lib -lprofiler" fi . auto/feature fi if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" else cat << END $0: error: the Google perftools module requires the Google perftools library. You can either do not enable the module or install the library. END exit 1 fi