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https://github.com/openvswitch/ovs
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8661af7986
The new command is of the form 'time/warp LARGE_MSECS MSECS'. It advances the current monotonic time by LARGE_MSECS. This is done MSECS at a time in each run of the main thread. This gives other threads time to run after the clock has been advanced by MSECS. The old command would continue to work. Rationale: On Windows, process creation is slower. When we have tests that run 'ovs-appctl time/warp MSECS' hundreds of times in a for loop, the time it takes to complete the test increases. This is specially true for bfd tests. For e.g, the 11 bfd tests would take 3.5 minutes to complete before this change and now takes a little less than 2 minutes. Signed-off-by: Gurucharan Shetty <gshetty@nicira.com> Acked-by: Ben Pfaff <blp@nicira.com>
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TIMEVAL_H
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#define TIMEVAL_H 1
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#include <time.h>
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#include "type-props.h"
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#include "util.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ds;
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struct pollfd;
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struct timespec;
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struct timeval;
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/* POSIX allows floating-point time_t, but we don't support it. */
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BUILD_ASSERT_DECL(TYPE_IS_INTEGER(time_t));
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/* We do try to cater to unsigned time_t, but I want to know about it if we
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* ever encounter such a platform. */
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BUILD_ASSERT_DECL(TYPE_IS_SIGNED(time_t));
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#define TIME_MAX TYPE_MAXIMUM(time_t)
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#define TIME_MIN TYPE_MINIMUM(time_t)
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#ifdef _WIN32
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#define localtime_r(timep, result) localtime_s(result, timep)
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#define gmtime_r(timep, result) gmtime_s(result, timep)
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#endif /* _WIN32 */
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struct tm_msec {
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struct tm tm;
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int msec;
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};
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time_t time_now(void);
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time_t time_wall(void);
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long long int time_msec(void);
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long long int time_wall_msec(void);
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void time_timespec(struct timespec *);
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void time_wall_timespec(struct timespec *);
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void time_alarm(unsigned int secs);
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int time_poll(struct pollfd *, int n_pollfds, HANDLE *handles,
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long long int timeout_when, int *elapsed);
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long long int timespec_to_msec(const struct timespec *);
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long long int timeval_to_msec(const struct timeval *);
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struct tm_msec *localtime_msec(long long int now, struct tm_msec *result);
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struct tm_msec *gmtime_msec(long long int now, struct tm_msec *result);
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size_t strftime_msec(char *s, size_t max, const char *format,
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const struct tm_msec *);
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void xgettimeofday(struct timeval *);
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void xclock_gettime(clock_t, struct timespec *);
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int get_cpu_usage(void);
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long long int time_boot_msec(void);
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void timewarp_run(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* timeval.h */
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