diff options
Diffstat (limited to 'libs/libcurl/src/timeval.c')
-rw-r--r-- | libs/libcurl/src/timeval.c | 420 |
1 files changed, 210 insertions, 210 deletions
diff --git a/libs/libcurl/src/timeval.c b/libs/libcurl/src/timeval.c index 647d7b0fc5..fdd90d2a2d 100644 --- a/libs/libcurl/src/timeval.c +++ b/libs/libcurl/src/timeval.c @@ -1,210 +1,210 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2022, 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 "timeval.h" - -#if defined(WIN32) && !defined(MSDOS) - -/* set in win32_init() */ -extern LARGE_INTEGER Curl_freq; -extern bool Curl_isVistaOrGreater; - -/* In case of bug fix this function has a counterpart in tool_util.c */ -struct curltime Curl_now(void) -{ - struct curltime now; - if(Curl_isVistaOrGreater) { /* QPC timer might have issues pre-Vista */ - LARGE_INTEGER count; - QueryPerformanceCounter(&count); - now.tv_sec = (time_t)(count.QuadPart / Curl_freq.QuadPart); - now.tv_usec = (int)((count.QuadPart % Curl_freq.QuadPart) * 1000000 / - Curl_freq.QuadPart); - } - else { - /* Disable /analyze warning that GetTickCount64 is preferred */ -#if defined(_MSC_VER) -#pragma warning(push) -#pragma warning(disable:28159) -#endif - DWORD milliseconds = GetTickCount(); -#if defined(_MSC_VER) -#pragma warning(pop) -#endif - - now.tv_sec = milliseconds / 1000; - now.tv_usec = (milliseconds % 1000) * 1000; - } - return now; -} - -#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC) - -struct curltime Curl_now(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. - */ -#ifdef HAVE_GETTIMEOFDAY - struct timeval now; -#endif - struct curltime cnow; - struct timespec tsnow; - - /* - ** clock_gettime() may be defined by Apple's SDK as weak symbol thus - ** code compiles but fails during run-time if clock_gettime() is - ** called on unsupported OS version. - */ -#if defined(__APPLE__) && defined(HAVE_BUILTIN_AVAILABLE) && \ - (HAVE_BUILTIN_AVAILABLE == 1) - bool have_clock_gettime = FALSE; - if(__builtin_available(macOS 10.12, iOS 10, tvOS 10, watchOS 3, *)) - have_clock_gettime = TRUE; -#endif - - if( -#if defined(__APPLE__) && defined(HAVE_BUILTIN_AVAILABLE) && \ - (HAVE_BUILTIN_AVAILABLE == 1) - have_clock_gettime && -#endif - (0 == clock_gettime(CLOCK_MONOTONIC, &tsnow))) { - cnow.tv_sec = tsnow.tv_sec; - cnow.tv_usec = (unsigned 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); - cnow.tv_sec = now.tv_sec; - cnow.tv_usec = (unsigned int)now.tv_usec; - } -#else - else { - cnow.tv_sec = time(NULL); - cnow.tv_usec = 0; - } -#endif - return cnow; -} - -#elif defined(HAVE_MACH_ABSOLUTE_TIME) - -#include <stdint.h> -#include <mach/mach_time.h> - -struct curltime Curl_now(void) -{ - /* - ** Monotonic timer on Mac OS is provided by mach_absolute_time(), which - ** returns time in Mach "absolute time units," which are platform-dependent. - ** To convert to nanoseconds, one must use conversion factors specified by - ** mach_timebase_info(). - */ - static mach_timebase_info_data_t timebase; - struct curltime cnow; - uint64_t usecs; - - if(0 == timebase.denom) - (void) mach_timebase_info(&timebase); - - usecs = mach_absolute_time(); - usecs *= timebase.numer; - usecs /= timebase.denom; - usecs /= 1000; - - cnow.tv_sec = usecs / 1000000; - cnow.tv_usec = (int)(usecs % 1000000); - - return cnow; -} - -#elif defined(HAVE_GETTIMEOFDAY) - -struct curltime Curl_now(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; - struct curltime ret; - (void)gettimeofday(&now, NULL); - ret.tv_sec = now.tv_sec; - ret.tv_usec = (int)now.tv_usec; - return ret; -} - -#else - -struct curltime Curl_now(void) -{ - /* - ** time() returns the value of time in seconds since the Epoch. - */ - struct curltime now; - now.tv_sec = time(NULL); - now.tv_usec = 0; - return now; -} - -#endif - -/* - * Returns: time difference in number of milliseconds. For too large diffs it - * returns max value. - * - * @unittest: 1323 - */ -timediff_t Curl_timediff(struct curltime newer, struct curltime older) -{ - timediff_t diff = (timediff_t)newer.tv_sec-older.tv_sec; - if(diff >= (TIMEDIFF_T_MAX/1000)) - return TIMEDIFF_T_MAX; - else if(diff <= (TIMEDIFF_T_MIN/1000)) - return TIMEDIFF_T_MIN; - return diff * 1000 + (newer.tv_usec-older.tv_usec)/1000; -} - -/* - * Returns: time difference in number of microseconds. For too large diffs it - * returns max value. - */ -timediff_t Curl_timediff_us(struct curltime newer, struct curltime older) -{ - timediff_t diff = (timediff_t)newer.tv_sec-older.tv_sec; - if(diff >= (TIMEDIFF_T_MAX/1000000)) - return TIMEDIFF_T_MAX; - else if(diff <= (TIMEDIFF_T_MIN/1000000)) - return TIMEDIFF_T_MIN; - return diff * 1000000 + newer.tv_usec-older.tv_usec; -} +/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, 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 "timeval.h"
+
+#if defined(WIN32) && !defined(MSDOS)
+
+/* set in win32_init() */
+extern LARGE_INTEGER Curl_freq;
+extern bool Curl_isVistaOrGreater;
+
+/* In case of bug fix this function has a counterpart in tool_util.c */
+struct curltime Curl_now(void)
+{
+ struct curltime now;
+ if(Curl_isVistaOrGreater) { /* QPC timer might have issues pre-Vista */
+ LARGE_INTEGER count;
+ QueryPerformanceCounter(&count);
+ now.tv_sec = (time_t)(count.QuadPart / Curl_freq.QuadPart);
+ now.tv_usec = (int)((count.QuadPart % Curl_freq.QuadPart) * 1000000 /
+ Curl_freq.QuadPart);
+ }
+ else {
+ /* Disable /analyze warning that GetTickCount64 is preferred */
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable:28159)
+#endif
+ DWORD milliseconds = GetTickCount();
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+ now.tv_sec = milliseconds / 1000;
+ now.tv_usec = (milliseconds % 1000) * 1000;
+ }
+ return now;
+}
+
+#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
+
+struct curltime Curl_now(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.
+ */
+#ifdef HAVE_GETTIMEOFDAY
+ struct timeval now;
+#endif
+ struct curltime cnow;
+ struct timespec tsnow;
+
+ /*
+ ** clock_gettime() may be defined by Apple's SDK as weak symbol thus
+ ** code compiles but fails during run-time if clock_gettime() is
+ ** called on unsupported OS version.
+ */
+#if defined(__APPLE__) && defined(HAVE_BUILTIN_AVAILABLE) && \
+ (HAVE_BUILTIN_AVAILABLE == 1)
+ bool have_clock_gettime = FALSE;
+ if(__builtin_available(macOS 10.12, iOS 10, tvOS 10, watchOS 3, *))
+ have_clock_gettime = TRUE;
+#endif
+
+ if(
+#if defined(__APPLE__) && defined(HAVE_BUILTIN_AVAILABLE) && \
+ (HAVE_BUILTIN_AVAILABLE == 1)
+ have_clock_gettime &&
+#endif
+ (0 == clock_gettime(CLOCK_MONOTONIC, &tsnow))) {
+ cnow.tv_sec = tsnow.tv_sec;
+ cnow.tv_usec = (unsigned 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);
+ cnow.tv_sec = now.tv_sec;
+ cnow.tv_usec = (unsigned int)now.tv_usec;
+ }
+#else
+ else {
+ cnow.tv_sec = time(NULL);
+ cnow.tv_usec = 0;
+ }
+#endif
+ return cnow;
+}
+
+#elif defined(HAVE_MACH_ABSOLUTE_TIME)
+
+#include <stdint.h>
+#include <mach/mach_time.h>
+
+struct curltime Curl_now(void)
+{
+ /*
+ ** Monotonic timer on Mac OS is provided by mach_absolute_time(), which
+ ** returns time in Mach "absolute time units," which are platform-dependent.
+ ** To convert to nanoseconds, one must use conversion factors specified by
+ ** mach_timebase_info().
+ */
+ static mach_timebase_info_data_t timebase;
+ struct curltime cnow;
+ uint64_t usecs;
+
+ if(0 == timebase.denom)
+ (void) mach_timebase_info(&timebase);
+
+ usecs = mach_absolute_time();
+ usecs *= timebase.numer;
+ usecs /= timebase.denom;
+ usecs /= 1000;
+
+ cnow.tv_sec = usecs / 1000000;
+ cnow.tv_usec = (int)(usecs % 1000000);
+
+ return cnow;
+}
+
+#elif defined(HAVE_GETTIMEOFDAY)
+
+struct curltime Curl_now(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;
+ struct curltime ret;
+ (void)gettimeofday(&now, NULL);
+ ret.tv_sec = now.tv_sec;
+ ret.tv_usec = (int)now.tv_usec;
+ return ret;
+}
+
+#else
+
+struct curltime Curl_now(void)
+{
+ /*
+ ** time() returns the value of time in seconds since the Epoch.
+ */
+ struct curltime now;
+ now.tv_sec = time(NULL);
+ now.tv_usec = 0;
+ return now;
+}
+
+#endif
+
+/*
+ * Returns: time difference in number of milliseconds. For too large diffs it
+ * returns max value.
+ *
+ * @unittest: 1323
+ */
+timediff_t Curl_timediff(struct curltime newer, struct curltime older)
+{
+ timediff_t diff = (timediff_t)newer.tv_sec-older.tv_sec;
+ if(diff >= (TIMEDIFF_T_MAX/1000))
+ return TIMEDIFF_T_MAX;
+ else if(diff <= (TIMEDIFF_T_MIN/1000))
+ return TIMEDIFF_T_MIN;
+ return diff * 1000 + (newer.tv_usec-older.tv_usec)/1000;
+}
+
+/*
+ * Returns: time difference in number of microseconds. For too large diffs it
+ * returns max value.
+ */
+timediff_t Curl_timediff_us(struct curltime newer, struct curltime older)
+{
+ timediff_t diff = (timediff_t)newer.tv_sec-older.tv_sec;
+ if(diff >= (TIMEDIFF_T_MAX/1000000))
+ return TIMEDIFF_T_MAX;
+ else if(diff <= (TIMEDIFF_T_MIN/1000000))
+ return TIMEDIFF_T_MIN;
+ return diff * 1000000 + newer.tv_usec-older.tv_usec;
+}
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