t7x/deps/curl/tests/libtest/testutil.c

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2023-12-06 17:43:39 -05:00
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#include <curl/curl.h>
#include "testutil.h"
#include "memdebug.h"
#if defined(_WIN32)
struct timeval tutil_tvnow(void)
{
/*
** GetTickCount() is available on _all_ Windows versions from W95 up
** to nowadays. Returns milliseconds elapsed since last system boot,
** increases monotonically and wraps once 49.7 days have elapsed.
*/
struct timeval now;
DWORD milliseconds = GetTickCount();
now.tv_sec = milliseconds / 1000;
now.tv_usec = (milliseconds % 1000) * 1000;
return now;
}
#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
struct timeval tutil_tvnow(void)
{
/*
** clock_gettime() is granted to be increased monotonically when the
** monotonic clock is queried. Time starting point is unspecified, it
** could be the system start-up time, the Epoch, or something else,
** in any case the time starting point does not change once that the
** system has started up.
*/
struct timeval now;
struct timespec tsnow;
if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) {
now.tv_sec = tsnow.tv_sec;
now.tv_usec = (int)(tsnow.tv_nsec / 1000);
}
/*
** Even when the configure process has truly detected monotonic clock
** availability, it might happen that it is not actually available at
** run-time. When this occurs simply fallback to other time source.
*/
#ifdef HAVE_GETTIMEOFDAY
else
(void)gettimeofday(&now, NULL);
#else
else {
now.tv_sec = time(NULL);
now.tv_usec = 0;
}
#endif
return now;
}
#elif defined(HAVE_GETTIMEOFDAY)
struct timeval tutil_tvnow(void)
{
/*
** gettimeofday() is not granted to be increased monotonically, due to
** clock drifting and external source time synchronization it can jump
** forward or backward in time.
*/
struct timeval now;
(void)gettimeofday(&now, NULL);
return now;
}
#else
struct timeval tutil_tvnow(void)
{
/*
** time() returns the value of time in seconds since the Epoch.
*/
struct timeval now;
now.tv_sec = time(NULL);
now.tv_usec = 0;
return now;
}
#endif
/*
* Make sure that the first argument is the more recent time, as otherwise
* we'll get a weird negative time-diff back...
*
* Returns: the time difference in number of milliseconds.
*/
long tutil_tvdiff(struct timeval newer, struct timeval older)
{
return (long)(newer.tv_sec-older.tv_sec)*1000+
(long)(newer.tv_usec-older.tv_usec)/1000;
}
/*
* Same as tutil_tvdiff but with full usec resolution.
*
* Returns: the time difference in seconds with subsecond resolution.
*/
double tutil_tvdiff_secs(struct timeval newer, struct timeval older)
{
if(newer.tv_sec != older.tv_sec)
return (double)(newer.tv_sec-older.tv_sec)+
(double)(newer.tv_usec-older.tv_usec)/1000000.0;
return (double)(newer.tv_usec-older.tv_usec)/1000000.0;
}
#ifdef _WIN32
HMODULE win32_load_system_library(const TCHAR *filename)
{
size_t filenamelen = _tcslen(filename);
size_t systemdirlen = GetSystemDirectory(NULL, 0);
size_t written;
TCHAR *path;
if(!filenamelen || filenamelen > 32768 ||
!systemdirlen || systemdirlen > 32768)
return NULL;
/* systemdirlen includes null character */
path = malloc(sizeof(TCHAR) * (systemdirlen + 1 + filenamelen));
if(!path)
return NULL;
/* if written >= systemdirlen then nothing was written */
written = GetSystemDirectory(path, (unsigned int)systemdirlen);
if(!written || written >= systemdirlen)
return NULL;
if(path[written - 1] != _T('\\'))
path[written++] = _T('\\');
_tcscpy(path + written, filename);
return LoadLibrary(path);
}
#endif