forked from osmocom/wireshark
179 lines
4.2 KiB
C
179 lines
4.2 KiB
C
/* time_util.c
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <glib.h>
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#include "time_util.h"
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#ifndef _WIN32
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#include <sys/time.h>
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#include <sys/resource.h>
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#else
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#include <windows.h>
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#endif
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/* converts a broken down date representation, relative to UTC,
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* to a timestamp; it uses timegm() if it's available.
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* Copied from Glib source gtimer.c
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*/
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time_t
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mktime_utc(struct tm *tm)
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{
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#ifndef HAVE_TIMEGM
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time_t retval;
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static const int days_before[] =
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{
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0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
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};
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int yr;
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if (tm->tm_mon < 0 || tm->tm_mon > 11)
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return (time_t) -1;
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retval = (tm->tm_year - 70) * 365;
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/* count number of leap years */
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yr = tm->tm_year + 1900;
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if (tm->tm_mon + 1 < 3 && (yr % 4) == 0 && ((yr % 100) != 0 || (yr % 400) == 0))
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yr--;
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retval += (((yr / 4) - (yr / 100) + (yr / 400)) - 477); /* 477 = ((1970 / 4) - (1970 / 100) + (1970 / 400)) */
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retval += days_before[tm->tm_mon] + tm->tm_mday - 1;
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retval = ((((retval * 24) + tm->tm_hour) * 60) + tm->tm_min) * 60 + tm->tm_sec;
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return retval;
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#else
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return timegm(tm);
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#endif /* !HAVE_TIMEGM */
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}
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void get_resource_usage(double *user_time, double *sys_time) {
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#ifndef _WIN32
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struct rusage ru;
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getrusage(RUSAGE_SELF, &ru);
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*user_time = ru.ru_utime.tv_sec + (ru.ru_utime.tv_usec / 1000000.0);
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*sys_time = ru.ru_stime.tv_sec + (ru.ru_stime.tv_usec / 1000000.0);
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#else /* _WIN32 */
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HANDLE h_proc = GetCurrentProcess();
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FILETIME cft, eft, kft, uft;
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ULARGE_INTEGER uli_time;
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GetProcessTimes(h_proc, &cft, &eft, &kft, &uft);
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uli_time.LowPart = uft.dwLowDateTime;
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uli_time.HighPart = uft.dwHighDateTime;
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*user_time = uli_time.QuadPart / 10000000.0;
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uli_time.LowPart = kft.dwLowDateTime;
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uli_time.HighPart = kft.dwHighDateTime;
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*sys_time = uli_time.QuadPart / 1000000000.0;
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#endif /* _WIN32 */
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}
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static double last_user_time = 0.0;
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static double last_sys_time = 0.0;
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void log_resource_usage(gboolean reset_delta, const char *format, ...) {
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va_list ap;
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GString *log_str = g_string_new("");
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double user_time;
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double sys_time;
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get_resource_usage(&user_time, &sys_time);
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if (reset_delta || last_user_time == 0.0) {
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last_user_time = user_time;
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last_sys_time = sys_time;
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}
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g_string_append_printf(log_str, "user %.3f +%.3f sys %.3f +%.3f ",
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user_time, user_time - last_user_time,
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sys_time, sys_time - last_sys_time);
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va_start(ap, format);
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g_string_append_vprintf(log_str, format, ap);
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va_end(ap);
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g_warning("%s", log_str->str);
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g_string_free(log_str, TRUE);
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}
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/* Copied from pcapio.c pcapng_write_interface_statistics_block()*/
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guint64
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create_timestamp(void) {
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guint64 timestamp;
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#ifdef _WIN32
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FILETIME now;
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#else
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struct timeval now;
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#endif
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#ifdef _WIN32
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/*
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* Current time, represented as 100-nanosecond intervals since
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* January 1, 1601, 00:00:00 UTC.
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*
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* I think DWORD might be signed, so cast both parts of "now"
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* to guint32 so that the sign bit doesn't get treated specially.
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*
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* Windows 8 provides GetSystemTimePreciseAsFileTime which we
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* might want to use instead.
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*/
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GetSystemTimeAsFileTime(&now);
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timestamp = (((guint64)(guint32)now.dwHighDateTime) << 32) +
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(guint32)now.dwLowDateTime;
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/*
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* Convert to same thing but as 1-microsecond, i.e. 1000-nanosecond,
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* intervals.
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*/
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timestamp /= 10;
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/*
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* Subtract difference, in microseconds, between January 1, 1601
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* 00:00:00 UTC and January 1, 1970, 00:00:00 UTC.
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*/
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timestamp -= G_GUINT64_CONSTANT(11644473600000000);
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#else
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/*
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* Current time, represented as seconds and microseconds since
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* January 1, 1970, 00:00:00 UTC.
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*/
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gettimeofday(&now, NULL);
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/*
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* Convert to delta in microseconds.
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*/
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timestamp = (guint64)(now.tv_sec) * 1000000 +
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(guint64)(now.tv_usec);
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#endif
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return timestamp;
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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