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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <inttypes.h>
#include <curl/curl.h>
#include <nbdkit-plugin.h>
#include "array-size.h"
#include "curldefs.h"
/* Use '-D curl.times=1' to set. */
NBDKIT_DLL_PUBLIC int curl_debug_times = 0;
/* The cumulative times. */
static struct {
bool cumulative;
const char *name;
CURLINFO info;
_Atomic curl_off_t t;
} times[] = {
#ifdef HAVE_CURLINFO_NAMELOOKUP_TIME_T
{ true, "name resolution", CURLINFO_NAMELOOKUP_TIME_T },
#endif
#ifdef HAVE_CURLINFO_CONNECT_TIME_T
{ true, "connection", CURLINFO_CONNECT_TIME_T },
#endif
#ifdef HAVE_CURLINFO_APPCONNECT_TIME_T
{ true, "SSL negotiation", CURLINFO_APPCONNECT_TIME_T },
#endif
#ifdef HAVE_CURLINFO_PRETRANSFER_TIME_T
{ true, "pretransfer", CURLINFO_PRETRANSFER_TIME_T },
#endif
#ifdef HAVE_CURLINFO_STARTTRANSFER_TIME_T
{ true, "first byte received", CURLINFO_STARTTRANSFER_TIME_T },
#endif
#ifdef HAVE_CURLINFO_TOTAL_TIME_T
{ true, "data transfer", CURLINFO_TOTAL_TIME_T },
#endif
#ifdef HAVE_CURLINFO_REDIRECT_TIME_T
{ false, "redirection time", CURLINFO_REDIRECT_TIME_T },
#endif
};
/* This is called after every curl_easy_perform. If -D curl.times=1
* then we update the time counters. Refer to curl_easy_getinfo(3)
* section "TIMES".
*/
void
update_times (CURL *c)
{
size_t i;
CURLcode r;
curl_off_t t;
if (!curl_debug_times) return;
for (i = 0; i < ARRAY_SIZE (times); ++i) {
r = curl_easy_getinfo (c, times[i].info, &t);
if (r != CURLE_OK) {
nbdkit_debug ("curl_easy_getinfo: error getting time '%s': %s",
times[i].name, curl_easy_strerror (r));
continue;
}
if (curl_debug_verbose)
nbdkit_debug ("time '%s': %" PRIi64, times[i].name, (int64_t) t);
times[i].t += t;
}
}
/* Called when the plugin is unloaded. */
void
display_times (void)
{
size_t i;
int64_t prev_t = 0, t, v;
if (!curl_debug_times) return;
nbdkit_debug ("times (-D curl.times=1):");
for (i = 0; i < ARRAY_SIZE (times); ++i) {
t = times[i].t; /* in microseconds */
if (times[i].cumulative)
v = t - prev_t;
else
v = t;
prev_t = t;
nbdkit_debug ("%-30s: %4" PRIi64 ".%06" PRIi64 " s",
times[i].name,
v / 1000000, v % 1000000);
}
}
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