avoid using vsnprintf when possible for SStream_concat() to improve p…

…erformance. based on the idea of Dang Hoang Vu.
muse117 · Jun 4, 2014 · b76233c · b76233c
1 parent 59caae0
commit b76233c
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Showing 4 changed files with 188 additions and 177 deletions.
diff --git a/SStream.c b/SStream.c
@@ -4,6 +4,7 @@
 #include <stdint.h>
 #include <stdarg.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "SStream.h"
 #include "cs_priv.h"
@@ -14,6 +15,14 @@ void SStream_Init(SStream *ss)
 	ss->buffer[0] = '\0';
 }
 
+void SStream_concat0(SStream *ss, char *s)
+{
+#ifndef CAPSTONE_DIET
+	strcpy(ss->buffer + ss->index, s);
+	ss->index += strlen(s);
+#endif
+}
+
 void SStream_concat(SStream *ss, const char *fmt, ...)
 {
 #ifndef CAPSTONE_DIET

diff --git a/SStream.h b/SStream.h
@@ -13,4 +13,6 @@ void SStream_Init(SStream *ss);
 
 void SStream_concat(SStream *ss, const char *fmt, ...);
 
+void SStream_concat0(SStream *ss, char *s);
+
 #endif
Original file line number	Diff line number	Diff line change
Expand Up		@@ -13,4 +13,6 @@ void SStream_Init(SStream *ss);

		void SStream_concat(SStream ss, const char fmt, ...);

		void SStream_concat0(SStream ss, char s);

		#endif