forked from enlightenment/efl
359 lines
8.6 KiB
C
359 lines
8.6 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2008 Cedric Bail, Vincent Torri
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#ifndef _WIN32
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# include <time.h>
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# include <sys/time.h>
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#else
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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# undef WIN32_LEAN_AND_MEAN
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#endif /* _WIN2 */
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#include "eina_config.h"
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#include "eina_private.h"
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#include "eina_inlist.h"
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#include "eina_error.h"
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/* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
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#include "eina_safety_checks.h"
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#include "eina_counter.h"
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/*============================================================================*
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* Local *
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*============================================================================*/
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/**
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* @cond LOCAL
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*/
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#ifndef _WIN32
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typedef struct timespec Eina_Nano_Time;
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#else
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typedef LARGE_INTEGER Eina_Nano_Time;
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#endif
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typedef struct _Eina_Clock Eina_Clock;
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struct _Eina_Counter
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{
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EINA_INLIST;
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Eina_Inlist *clocks;
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const char *name;
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};
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struct _Eina_Clock
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{
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EINA_INLIST;
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Eina_Nano_Time start;
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Eina_Nano_Time end;
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int specimen;
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Eina_Bool valid;
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};
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#ifndef _WIN32
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static inline int
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_eina_counter_time_get(Eina_Nano_Time *tp)
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{
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# if defined(CLOCK_PROCESS_CPUTIME_ID)
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return clock_gettime(CLOCK_PROCESS_CPUTIME_ID, tp);
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# elif defined(CLOCK_PROF)
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return clock_gettime(CLOCK_PROF, tp);
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# elif defined(CLOCK_REALTIME)
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return clock_gettime(CLOCK_REALTIME, tp);
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# else
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struct timeval tv;
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if (gettimeofday(&tv, NULL))
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return -1;
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tp->tv_sec = tv.tv_sec;
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tp->tv_nsec = tv.tv_usec * 1000L;
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return 0;
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# endif
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}
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#else
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static const char EINA_ERROR_COUNTER_WINDOWS_STR[] =
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"Change your OS, you moron !";
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static int EINA_ERROR_COUNTER_WINDOWS = 0;
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static LARGE_INTEGER _eina_counter_frequency;
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static inline int
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_eina_counter_time_get(Eina_Nano_Time *tp)
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{
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return QueryPerformanceCounter(tp);
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}
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#endif /* _WIN2 */
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static char *
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_eina_counter_asiprintf(char *base, int *position, const char *format, ...)
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{
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char *tmp, *result;
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int size = 32;
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int n;
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va_list ap;
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tmp = realloc(base, sizeof (char) * (*position + size));
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if (!tmp)
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return base;
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result = tmp;
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while (1)
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{
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va_start(ap, format);
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n = vsnprintf(result + *position, size, format, ap);
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va_end(ap);
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if (n > -1 && n < size)
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{
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/* If we always have glibc > 2.2, we could just return *position += n. */
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*position += strlen(result + *position);
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return result;
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}
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if (n > -1)
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size = n + 1;
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else
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size <<= 1;
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tmp = realloc(result, sizeof (char) * (*position + size));
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if (!tmp)
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return result;
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result = tmp;
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}
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}
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/**
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* @endcond
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*/
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/*============================================================================*
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* Global *
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*============================================================================*/
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/**
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* @internal
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* @brief Initialize the eina counter internal structure.
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*
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function shuts down the counter module set up by
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* eina_counter_init(). It is called by eina_init().
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*
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* This function sets up the error module of Eina and only on Windows,
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* it initializes the high precision timer. It also registers, only on
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* Windows, the error #EINA_ERROR_COUNTER_WINDOWS. It is also called
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* by eina_init(). It returns 0 on failure, otherwise it returns the
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* number of times it has already been called.
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*
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* @see eina_init()
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*/
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Eina_Bool
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eina_counter_init(void)
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{
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#ifdef _WIN32
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EINA_ERROR_COUNTER_WINDOWS = eina_error_msg_static_register(
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EINA_ERROR_COUNTER_WINDOWS_STR);
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if (!QueryPerformanceFrequency(&_eina_counter_frequency))
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{
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eina_error_set(EINA_ERROR_COUNTER_WINDOWS);
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return EINA_FALSE;
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}
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#endif /* _WIN2 */
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return EINA_TRUE;
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}
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/**
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* @internal
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* @brief Shut down the counter module.
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*
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* @return #EINA_TRUE on success, #EINA_FALSE on failure.
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*
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* This function shuts down the counter module set up by
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* eina_counter_init(). It is called by eina_shutdown().
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*
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* @see eina_shutdown()
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*/
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Eina_Bool
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eina_counter_shutdown(void)
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{
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return EINA_TRUE;
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}
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/*============================================================================*
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* API *
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*============================================================================*/
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EAPI Eina_Counter *
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eina_counter_new(const char *name)
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{
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Eina_Counter *counter;
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size_t length;
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EINA_SAFETY_ON_NULL_RETURN_VAL(name, NULL);
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length = strlen(name) + 1;
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eina_error_set(0);
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counter = calloc(1, sizeof (Eina_Counter) + length);
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if (!counter)
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{
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eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
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return NULL;
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}
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counter->name = (char *)(counter + 1);
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memcpy((char *)counter->name, name, length);
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return counter;
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}
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EAPI void
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eina_counter_free(Eina_Counter *counter)
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{
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EINA_SAFETY_ON_NULL_RETURN(counter);
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while (counter->clocks)
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{
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Eina_Clock *clk = (Eina_Clock *)counter->clocks;
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counter->clocks = eina_inlist_remove(counter->clocks, counter->clocks);
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free(clk);
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}
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free(counter);
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}
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EAPI void
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eina_counter_start(Eina_Counter *counter)
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{
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Eina_Clock *clk;
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Eina_Nano_Time tp;
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EINA_SAFETY_ON_NULL_RETURN(counter);
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if (_eina_counter_time_get(&tp) != 0)
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return;
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eina_error_set(0);
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clk = calloc(1, sizeof (Eina_Clock));
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if (!clk)
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{
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eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
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return;
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}
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counter->clocks = eina_inlist_prepend(counter->clocks, EINA_INLIST_GET(clk));
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clk->valid = EINA_FALSE;
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clk->start = tp;
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}
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EAPI void
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eina_counter_stop(Eina_Counter *counter, int specimen)
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{
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Eina_Clock *clk;
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Eina_Nano_Time tp;
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EINA_SAFETY_ON_NULL_RETURN(counter);
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if (_eina_counter_time_get(&tp) != 0)
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return;
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clk = (Eina_Clock *)counter->clocks;
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if (!clk || clk->valid == EINA_TRUE)
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return;
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clk->end = tp;
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clk->specimen = specimen;
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clk->valid = EINA_TRUE;
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}
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EAPI char *
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eina_counter_dump(Eina_Counter *counter)
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{
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Eina_Clock *clk;
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char *result = NULL;
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int position = 0;
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EINA_SAFETY_ON_NULL_RETURN_VAL(counter, NULL);
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result = _eina_counter_asiprintf(
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result,
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&position,
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"# specimen\texperiment time\tstarting time\tending time\n");
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if (!result)
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return NULL;
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EINA_INLIST_REVERSE_FOREACH(counter->clocks, clk)
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{
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long int start;
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long int end;
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long int diff;
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if (clk->valid == EINA_FALSE)
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continue;
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#ifndef _WIN32
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start = clk->start.tv_sec * 1000000000 + clk->start.tv_nsec;
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end = clk->end.tv_sec * 1000000000 + clk->end.tv_nsec;
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diff =
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(clk->end.tv_sec -
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clk->start.tv_sec) * 1000000000 + clk->end.tv_nsec -
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clk->start.tv_nsec;
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#else
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start =
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(long int)(((long long int)clk->start.QuadPart *
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1000000000ll) /
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(long long int)_eina_counter_frequency.QuadPart);
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end =
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(long int)(((long long int)clk->end.QuadPart *
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1000000000LL) /
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(long long int)_eina_counter_frequency.QuadPart);
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diff =
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(long int)(((long long int)(clk->end.QuadPart -
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clk->start.QuadPart) *
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1000000000LL) /
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(long long int)_eina_counter_frequency.QuadPart);
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#endif /* _WIN2 */
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result = _eina_counter_asiprintf(result, &position,
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"%i\t%li\t%li\t%li\n",
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clk->specimen,
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diff,
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start,
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end);
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}
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return result;
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}
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