NdbTick.h
上传用户:romrleung
上传日期:2022-05-23
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文件大小:2k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef NDB_TICK_H
- #define NDB_TICK_H
- #include <ndb_types.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- #if defined NDB_OSE || defined NDB_SOFTOSE
- typedef unsigned long NDB_TICKS;
- #else
- typedef Uint64 NDB_TICKS;
- #endif
- /**
- * Returns the current millisecond since 1970
- */
- NDB_TICKS NdbTick_CurrentMillisecond(void);
- /**
- * Get current micro second
- * Second method is simply abstraction on top of the first
- *
- * Returns 0 - Success
- */
- int NdbTick_CurrentMicrosecond(NDB_TICKS * secs, Uint32 * micros);
- /*#define TIME_MEASUREMENT*/
- #ifdef TIME_MEASUREMENT
- struct MicroSecondTimer {
- NDB_TICKS seconds;
- NDB_TICKS micro_seconds;
- };
- /**
- * Get time between start and stop time in microseconds
- * Abstraction to get time in struct
- *
- * 0 means stop happened at or before start time
- */
- NDB_TICKS NdbTick_getMicrosPassed(struct MicroSecondTimer start,
- struct MicroSecondTimer stop);
- int NdbTick_getMicroTimer(struct MicroSecondTimer* time_now);
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif