From c81b2cb24dde2a81cc455a0874158811b98d17ef Mon Sep 17 00:00:00 2001
From: Couriersud <couriersud@users.noreply.github.com>
Date: Wed, 6 Aug 2008 19:31:39 +0000
Subject: [PATCH] Added module profiling to discrete sound core * added
 DISCRETE_PROFILING macro to discrete.h * Upon discrete_stop, the worst
 performing modules will be listed

---
 src/emu/sound/discrete.c | 35 ++++++++++++++++++++++++++++++++++-
 src/emu/sound/discrete.h | 11 +++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/src/emu/sound/discrete.c b/src/emu/sound/discrete.c
index 07dfb18dfd4..94c70c1387d 100644
--- a/src/emu/sound/discrete.c
+++ b/src/emu/sound/discrete.c
@@ -51,7 +51,6 @@
 #define DISCRETE_DEBUGLOG			(0)
 
 
-
 /*************************************
  *
  *  Global variables
@@ -374,6 +373,34 @@ static void discrete_stop(void *chip)
 	discrete_info *info = chip;
 	int log_num;
 
+#if (DISCRETE_PROFILING)
+	{
+		int nodenum;
+		osd_ticks_t total = 0;
+		osd_ticks_t tresh;
+		
+		/* calculate total time */
+		for (nodenum = 0; nodenum < info->node_count; nodenum++)
+		{
+			node_description *node = info->running_order[nodenum];
+
+			/* Now step the node */
+			total += node->run_time;
+		}
+		/* print statistics */
+		tresh = total / info->node_count;
+		for (nodenum = 0; nodenum < info->node_count; nodenum++)
+		{
+			node_description *node = info->running_order[nodenum];
+
+			if (node->run_time > tresh)
+				printf("%3d: %20s %8.2f\n", NODE_INDEX(node->node), node->module.name, (float) node->run_time / (float) total * 100.0);
+			/* Now step the node */
+			total += node->run_time;
+		}
+	}
+#endif
+		
 	/* close any csv files */
 	for (log_num = 0; log_num < info->num_csvlogs; log_num++)
 		if (info->disc_csv_file[log_num])
@@ -459,8 +486,14 @@ static void discrete_stream_update(void *param, stream_sample_t **inputs, stream
 			node_description *node = info->running_order[nodenum];
 
 			/* Now step the node */
+#if (DISCRETE_PROFILING)
+			node->run_time -= osd_profiling_ticks();
+#endif
 			if (node->module.step)
 				(*node->module.step)(node);
+#if (DISCRETE_PROFILING)
+			node->run_time += osd_profiling_ticks();
+#endif
 		}
 
 		/* Add gain to the output and put into the buffers */
diff --git a/src/emu/sound/discrete.h b/src/emu/sound/discrete.h
index cb58c95e570..625b3cab51d 100644
--- a/src/emu/sound/discrete.h
+++ b/src/emu/sound/discrete.h
@@ -3150,6 +3150,14 @@
  ************************************************************************/
 
 
+/*************************************
+ *
+ *  Profiling Nodes
+ *
+ *************************************/
+
+#define DISCRETE_PROFILING			(0)
+
 /*************************************
  *
  *  Core constants
@@ -3421,6 +3429,9 @@ struct _node_description
 	void *			context;							/* Contextual information specific to this node type */
 	const char *	name;								/* Text name string for identification/debug */
 	const void *	custom;								/* Custom function specific initialisation data */
+#if (DISCRETE_PROFILING)
+	osd_ticks_t		run_time;
+#endif
 };