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80 lines
2.6 KiB
80 lines
2.6 KiB
4 months ago
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/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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int
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lws_det_lat_active(struct lws_context *context)
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{
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return !!context->detailed_latency_cb;
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}
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int
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lws_det_lat_cb(struct lws_context *context, lws_detlat_t *d)
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{
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int n;
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if (!context->detailed_latency_cb)
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return 0;
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n = context->detailed_latency_cb(context, d);
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memset(&d->latencies, 0, sizeof(d->latencies));
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return n;
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}
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static const char types[] = "rwNCTt????";
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int
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lws_det_lat_plot_cb(struct lws_context *context, const lws_detlat_t *d)
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{
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char buf[80], *p = buf, *end = &p[sizeof(buf) - 1];
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if (!context->detailed_latency_filepath)
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return 1;
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if (context->latencies_fd == -1) {
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context->latencies_fd = open(context->detailed_latency_filepath,
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LWS_O_CREAT | LWS_O_TRUNC | LWS_O_WRONLY, 0600);
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if (context->latencies_fd == -1)
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return 1;
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}
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p += lws_snprintf(p, lws_ptr_diff(end, p),
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"%llu %c %u %u %u %u %u %zu %zu\n",
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(unsigned long long)lws_now_usecs(), types[d->type],
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d->latencies[LAT_DUR_PROXY_CLIENT_REQ_TO_WRITE],
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d->latencies[LAT_DUR_PROXY_CLIENT_WRITE_TO_PROXY_RX],
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d->latencies[LAT_DUR_PROXY_PROXY_REQ_TO_WRITE],
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d->latencies[LAT_DUR_PROXY_CLIENT_REQ_TO_WRITE] +
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d->latencies[LAT_DUR_PROXY_CLIENT_WRITE_TO_PROXY_RX] +
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d->latencies[LAT_DUR_PROXY_PROXY_REQ_TO_WRITE],
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d->latencies[LAT_DUR_PROXY_RX_TO_ONWARD_TX],
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d->acc_size, d->req_size);
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write(context->latencies_fd, buf, lws_ptr_diff(p, buf));
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return 0;
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}
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