From dbeec76cb8305b7f94203da2eb56a760c46ec835 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 12 Jun 2013 17:56:02 +0300
Subject: [PATCH] smatch: add --time option for debugging what takes so long

Put the following code:

	struct timeval start;

	gettimeofday(&start, NULL);
	...
	ms = ms_since(&start);
	sm_msg("used %d ms", ms);

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 smatch.c        |  2 ++
 smatch.h        |  3 +++
 smatch_helper.c | 11 +++++++++++
 3 files changed, 16 insertions(+)

diff --git a/smatch.c b/smatch.c
index 6befae15..fe1114cb 100644
--- a/smatch.c
+++ b/smatch.c
@@ -26,6 +26,7 @@ int option_call_tree = 0;
 int option_no_db = 0;
 int option_debug_related;
 int option_file_output;
+int option_time;
 char *option_datadir_str;
 FILE *sm_outfd;
 
@@ -145,6 +146,7 @@ void parse_args(int *argcp, char ***argvp)
 		OPTION(param_mapper);
 		OPTION(call_tree);
 		OPTION(file_output);
+		OPTION(time);
 		if (!found)
 			break;
 		(*argcp)--;
diff --git a/smatch.h b/smatch.h
index 64e6d663..c58b53a3 100644
--- a/smatch.h
+++ b/smatch.h
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <limits.h>
+#include <sys/time.h>
 #include "lib.h"
 #include "allocate.h"
 #include "parse.h"
@@ -274,6 +275,7 @@ char *get_fnptr_name(struct expression *expr);
 int positions_eq(struct position pos1, struct position pos2);
 struct statement *get_current_statement(void);
 int get_param_num_from_sym(struct symbol *sym);
+int ms_since(struct timeval *start);
 
 /* smatch_type.c */
 struct symbol *get_real_base_type(struct symbol *sym);
@@ -333,6 +335,7 @@ extern int option_known_conditions;
 extern int option_two_passes;
 extern int option_no_db;
 extern int option_file_output;
+extern int option_time;
 extern struct expression_list *big_expression_stack;
 extern struct statement_list *big_statement_stack;
 int inlinable(struct expression *expr);
diff --git a/smatch_helper.c b/smatch_helper.c
index 0ec43d55..732ccaae 100644
--- a/smatch_helper.c
+++ b/smatch_helper.c
@@ -535,3 +535,14 @@ int get_param_num_from_sym(struct symbol *sym)
 	return -1;
 }
 
+int ms_since(struct timeval *start)
+{
+	struct timeval end;
+	double diff;
+
+	gettimeofday(&end, NULL);
+	diff = (end.tv_sec - start->tv_sec) * 1000.0;
+	diff += (end.tv_usec - start->tv_usec) / 1000.0;
+	return (int)diff;
+}
+
-- 
2.11.4.GIT