summaryrefslogtreecommitdiff
path: root/mysql/mysys/my_getsystime.c
diff options
context:
space:
mode:
Diffstat (limited to 'mysql/mysys/my_getsystime.c')
-rw-r--r--mysql/mysys/my_getsystime.c122
1 files changed, 0 insertions, 122 deletions
diff --git a/mysql/mysys/my_getsystime.c b/mysql/mysys/my_getsystime.c
deleted file mode 100644
index 3007c4e..0000000
--- a/mysql/mysys/my_getsystime.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Copyright (c) 2004, 2014, Oracle and/or its affiliates. All rights reserved.
-
- 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; version 2 of the License.
-
- 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
-
-/* get time since epoc in 100 nanosec units */
-/* thus to get the current time we should use the system function
- with the highest possible resolution */
-
-#include "mysys_priv.h"
-#include "my_static.h"
-
-#if HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-
-/**
- Get high-resolution time.
-
- @remark For windows platforms we need the frequency value of
- the CPU. This is initialized in my_init.c through
- QueryPerformanceFrequency(). If the Windows platform
- doesn't support QueryPerformanceFrequency(), zero is
- returned.
-
- @retval current high-resolution time.
-*/
-
-ulonglong my_getsystime()
-{
-#ifdef HAVE_CLOCK_GETTIME
- struct timespec tp;
- clock_gettime(CLOCK_REALTIME, &tp);
- return (ulonglong)tp.tv_sec*10000000+(ulonglong)tp.tv_nsec/100;
-#elif defined(_WIN32)
- LARGE_INTEGER t_cnt;
- if (query_performance_frequency)
- {
- QueryPerformanceCounter(&t_cnt);
- return ((t_cnt.QuadPart / query_performance_frequency * 10000000) +
- ((t_cnt.QuadPart % query_performance_frequency) * 10000000 /
- query_performance_frequency) + query_performance_offset);
- }
- return 0;
-#else
- /* TODO: check for other possibilities for hi-res timestamping */
- struct timeval tv;
- gettimeofday(&tv,NULL);
- return (ulonglong)tv.tv_sec*10000000+(ulonglong)tv.tv_usec*10;
-#endif
-}
-
-
-/**
- Return current time.
-
- @param flags If MY_WME is set, write error if time call fails.
-
- @retval current time.
-*/
-
-time_t my_time(myf flags)
-{
- time_t t;
- /*
- The following loop is here beacuse time() may fail on some systems.
- We're using a hardcoded my_message_stderr() here rather than going
- through the hook in my_message_local() because it's far too easy to
- come full circle with any logging function that writes timestamps ...
- */
- while ((t= time(0)) == (time_t) -1)
- {
- if (flags & MY_WME)
- my_message_stderr(0, "time() call failed", MYF(0));
- }
- return t;
-}
-
-
-#define OFFSET_TO_EPOCH 116444736000000000ULL
-
-/**
- Return time in microseconds.
-
- @remark This function is to be used to measure performance in
- micro seconds. As it's not defined whats the start time
- for the clock, this function us only useful to measure
- time between two moments.
-
- @retval Value in microseconds from some undefined point in time.
-*/
-
-ulonglong my_micro_time()
-{
-#ifdef _WIN32
- ulonglong newtime;
- GetSystemTimeAsFileTime((FILETIME*)&newtime);
- newtime-= OFFSET_TO_EPOCH;
- return (newtime/10);
-#else
- ulonglong newtime;
- struct timeval t;
- /*
- The following loop is here because gettimeofday may fail on some systems
- */
- while (gettimeofday(&t, NULL) != 0)
- {}
- newtime= (ulonglong)t.tv_sec * 1000000 + t.tv_usec;
- return newtime;
-#endif
-}
-