Mercurial > hg > nginx-quic
view src/os/unix/ngx_thread_cond.c @ 8512:bb5152ed045b quic
QUIC: added support for segmentation offloading.
To improve output performance, UDP segmentation offloading is used
if available. If there is a significant amount of data in an output
queue and path is verified, QUIC packets are not sent one-by-one,
but instead are collected in a buffer, which is then passed to kernel
in a single sendmsg call, using UDP GSO. Such method greatly decreases
number of system calls and thus system load.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 15 Jul 2021 14:22:00 +0300 |
parents | 022ea0d17177 |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> ngx_int_t ngx_thread_cond_create(ngx_thread_cond_t *cond, ngx_log_t *log) { ngx_err_t err; err = pthread_cond_init(cond, NULL); if (err == 0) { return NGX_OK; } ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_init() failed"); return NGX_ERROR; } ngx_int_t ngx_thread_cond_destroy(ngx_thread_cond_t *cond, ngx_log_t *log) { ngx_err_t err; err = pthread_cond_destroy(cond); if (err == 0) { return NGX_OK; } ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_destroy() failed"); return NGX_ERROR; } ngx_int_t ngx_thread_cond_signal(ngx_thread_cond_t *cond, ngx_log_t *log) { ngx_err_t err; err = pthread_cond_signal(cond); if (err == 0) { return NGX_OK; } ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_signal() failed"); return NGX_ERROR; } ngx_int_t ngx_thread_cond_wait(ngx_thread_cond_t *cond, ngx_thread_mutex_t *mtx, ngx_log_t *log) { ngx_err_t err; err = pthread_cond_wait(cond, mtx); #if 0 ngx_time_update(); #endif if (err == 0) { return NGX_OK; } ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_cond_wait() failed"); return NGX_ERROR; }