From 4b2812b7e0a60fcee1e492647233d6291302ba0e Mon Sep 17 00:00:00 2001
From: Cedric BAIL <cedric.bail@free.fr>
Date: Wed, 6 Aug 2008 15:35:56 +0000
Subject: [PATCH] Add a counter API, usefull for benchmarking.

SVN revision: 35344
---
 legacy/eina/src/include/eina_counter.h |  20 +++
 legacy/eina/src/lib/eina_counter.c     | 161 +++++++++++++++++++++++++
 2 files changed, 181 insertions(+)
 create mode 100644 legacy/eina/src/include/eina_counter.h
 create mode 100644 legacy/eina/src/lib/eina_counter.c

diff --git a/legacy/eina/src/include/eina_counter.h b/legacy/eina/src/include/eina_counter.h
new file mode 100644
index 0000000000..15e8ab249c
--- /dev/null
+++ b/legacy/eina/src/include/eina_counter.h
@@ -0,0 +1,20 @@
+#ifndef EINA_PERFORMANCE_H_
+#define EINA_PERFORMANCE_H_
+
+#include <stdio.h>
+
+#include "eina_types.h"
+
+typedef struct _Eina_Counter Eina_Counter;
+
+EAPI int eina_counter_init(void);
+EAPI int eina_counter_shutdown(void);
+
+EAPI Eina_Counter *eina_counter_add(const char *name);
+EAPI void eina_counter_delete(Eina_Counter *counter);
+EAPI void eina_counter_dump(Eina_Counter *counter, FILE *out);
+
+EAPI void eina_counter_start(Eina_Counter *counter);
+EAPI void eina_counter_stop(Eina_Counter *counter, int specimen);
+
+#endif
diff --git a/legacy/eina/src/lib/eina_counter.c b/legacy/eina/src/lib/eina_counter.c
new file mode 100644
index 0000000000..8fc17f48c0
--- /dev/null
+++ b/legacy/eina/src/lib/eina_counter.c
@@ -0,0 +1,161 @@
+#include <time.h>
+
+#include "eina_counter.h"
+#include "eina_inlist.h"
+#include "eina_error.h"
+#include "eina_private.h"
+/*============================================================================*
+ *                                  Local                                     * 
+ *============================================================================*/
+typedef struct _Eina_Clock Eina_Clock;
+
+struct _Eina_Counter
+{
+   Eina_Inlist __list;
+
+   Eina_Inlist *clocks;
+   const char *name;
+};
+
+struct _Eina_Clock
+{
+   Eina_Inlist __list;
+
+   struct timespec start;
+   struct timespec end;
+   int specimen;
+
+   Eina_Bool valid;
+};
+
+static int _eina_counter_init_count = 0;
+static int EINA_COUNTER_ERROR_OUT_OF_MEMORY = 0;
+
+/*============================================================================*
+ *                                 Global                                     *
+ *============================================================================*/
+/*============================================================================*
+ *                                   API                                      *
+ *============================================================================*/
+
+EAPI int
+eina_counter_init(void)
+{
+   _eina_counter_init_count++;
+
+   if (_eina_counter_init_count == 1)
+     {
+	eina_error_init();
+	EINA_COUNTER_ERROR_OUT_OF_MEMORY  = eina_error_register("Eina_Counter out of memory");
+     }
+
+   return _eina_counter_init_count;
+}
+
+EAPI int
+eina_counter_shutdown(void)
+{
+   _eina_counter_init_count--;
+
+   if (_eina_counter_init_count == 0) eina_error_shutdown();
+
+   return _eina_counter_init_count;
+}
+
+EAPI Eina_Counter *
+eina_counter_add(const char *name)
+{
+   Eina_Counter *counter;
+   int length;
+
+   if (!name) return NULL;
+
+   length = strlen(name) + 1;
+
+   counter = calloc(1, sizeof (Eina_Counter) + length);
+   if (!counter)
+     {
+	eina_error_set(EINA_COUNTER_ERROR_OUT_OF_MEMORY);
+	return NULL;
+     }
+
+   counter->name = (char*) (counter + 1);
+   memcpy((char*) counter->name, name, length);
+
+   return counter;
+}
+
+EAPI void
+eina_counter_delete(Eina_Counter *counter)
+{
+   if (!counter) return ;
+
+   while (counter->clocks)
+     {
+	Eina_Clock *clock = (Eina_Clock *) counter->clocks;
+
+	counter->clocks = eina_inlist_remove(counter->clocks, counter->clocks);
+	free(clock);
+     }
+
+   free(counter);
+}
+
+EAPI void
+eina_counter_start(Eina_Counter *counter)
+{
+   Eina_Clock *clk;
+   struct timespec tp;
+
+   if (!counter) return ;
+   if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp) != 0) return ;
+
+   clk = calloc(1, sizeof (Eina_Clock));
+   if (!clk)
+     {
+	eina_error_set(EINA_COUNTER_ERROR_OUT_OF_MEMORY);
+	return ;
+     }
+
+   counter->clocks = eina_inlist_prepend(counter->clocks, clk);
+
+   clk->valid = EINA_FALSE;
+   clk->start = tp;
+}
+
+EAPI void
+eina_counter_stop(Eina_Counter *counter, int specimen)
+{
+   Eina_Clock *clk;
+   struct timespec tp;
+
+   if (!counter) return ;
+   if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &tp) != 0) return ;
+
+   clk = (Eina_Clock *) counter->clocks;
+
+   if (clk->valid == EINA_TRUE) return ;
+
+   clk->end = tp;
+   clk->specimen = specimen;
+   clk->valid = EINA_TRUE;
+}
+
+EAPI void
+eina_counter_dump(Eina_Counter *counter, FILE *out)
+{
+   Eina_Clock *clk;
+
+   fprintf(out, "# specimen\texperiment time\tstarting time\tending time\n");
+
+   EINA_INLIST_ITER_LAST(counter->clocks, clk)
+     {
+	if (clk->valid == EINA_TRUE)
+	  fprintf(out, "%i\t%li\t%li\t%li\n",
+		  clk->specimen,
+		  (clk->end.tv_sec * 1000000000 + clk->end.tv_nsec) - (clk->start.tv_sec * 1000000000 + clk->start.tv_nsec),
+		  clk->start.tv_sec * 1000000000 + clk->start.tv_nsec,
+		  clk->end.tv_sec * 1000000000 + clk->end.tv_nsec);
+     }
+}
+