[Nptltracetool-cvs] trace/nptl-trace nptl-trace.c,1.41,1.42

[Matthieu C. <ma...@us...>]

Update of /cvsroot/nptltracetool/trace/nptl-trace
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv2519

Modified Files:
	nptl-trace.c 
Log Message:
more understandable way to compute size_buff

Index: nptl-trace.c
===================================================================
RCS file: /cvsroot/nptltracetool/trace/nptl-trace/nptl-trace.c,v
retrieving revision 1.41
retrieving revision 1.42
diff -u -d -r1.41 -r1.42
--- nptl-trace.c	27 Jun 2005 08:19:48 -0000	1.41
+++ nptl-trace.c	27 Jun 2005 09:45:14 -0000	1.42
@@ -195,7 +195,7 @@
 	static char binary[BIN_FILE_LEN + 1];
 	int fd;
 	long long size_buff;
-	long long size_buff1 = ((UINT_MAX-1)/2) + 1;
+	int size_log2 = 0;
 	int trace_level = LEVEL_ALL;
 	signed char c;
 	int status;
@@ -261,12 +261,14 @@
 		exit (1);
 	}
 	
-	/* UINT_MAX is a multiple of size_buff */
-	while (size_buff1 > size_buff) {
-		TRACE_TRACE(TRACE_DBG_INIT, "Computing buffer size : size=%llu approx=%llu\n", size_buff, size_buff1);
-		size_buff1/=2;
+	if (size_buff < 4)
+		size_buff = 4;
+	/* XXX compute a better value in order to avoid that 16 -> 32, ... */
+	while (size_buff!=0) {
+		++size_log2;
+		size_buff>>=1;
 	}
-	size_buff = size_buff1*2;
+	size_buff=1<<size_log2;
 
 #if 0
 	if ((cmd=fork())!=0) {