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view src/os/unix/ngx_setaffinity.c @ 8826:3436b441239b quic

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HTTP/3: proper uni stream closure detection. Previously, closure detection for server-initiated uni streams was not properly implemented. Instead, HTTP/3 code relied on QUIC code posting the read event and setting rev->error when it needed to close the stream. Then, regular uni stream read handler called c->recv() and received error, which closed the stream. This was an ad-hoc solution. If, for whatever reason, the read handler was called earlier, c->recv() would return 0, which would also close the stream. Now server-initiated uni streams have a separate read event handler for tracking stream closure. The handler calls c->recv(), which normally returns 0, but may return error in case of closure.
author Roman Arutyunyan <arut@nginx.com>
date Mon, 31 Jan 2022 09:46:30 +0300
parents 7296b38f6416
children
line wrap: on
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/*
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>


#if (NGX_HAVE_CPUSET_SETAFFINITY)

void
ngx_setaffinity(ngx_cpuset_t *cpu_affinity, ngx_log_t *log)
{
    ngx_uint_t  i;

    for (i = 0; i < CPU_SETSIZE; i++) {
        if (CPU_ISSET(i, cpu_affinity)) {
            ngx_log_error(NGX_LOG_NOTICE, log, 0,
                          "cpuset_setaffinity(): using cpu #%ui", i);
        }
    }

    if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
                           sizeof(cpuset_t), cpu_affinity) == -1)
    {
        ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
                      "cpuset_setaffinity() failed");
    }
}

#elif (NGX_HAVE_SCHED_SETAFFINITY)

void
ngx_setaffinity(ngx_cpuset_t *cpu_affinity, ngx_log_t *log)
{
    ngx_uint_t  i;

    for (i = 0; i < CPU_SETSIZE; i++) {
        if (CPU_ISSET(i, cpu_affinity)) {
            ngx_log_error(NGX_LOG_NOTICE, log, 0,
                          "sched_setaffinity(): using cpu #%ui", i);
        }
    }

    if (sched_setaffinity(0, sizeof(cpu_set_t), cpu_affinity) == -1) {
        ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
                      "sched_setaffinity() failed");
    }
}

#endif