From e017e0cb24f9c5ea4c0e2b7479e4b411e4882dcf Mon Sep 17 00:00:00 2001
From: Jan Ziak <0xe2.0x9a.0x9b@gmail.com>
Date: Mon, 27 May 2013 08:11:59 +0200
Subject: runtime: flag static variables as no-pointers

Variables in data sections of 32-bit executables interfere with
garbage collector's ability to free objects and/or unnecessarily
slow down the garbage collector.

This changeset moves some static variables to .noptr sections.
'files' in symtab.c is now allocated dynamically.

R=golang-dev, dvyukov, minux.ma
CC=golang-dev
https://golang.org/cl/9786044
---
 src/pkg/runtime/os_linux.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/pkg/runtime/os_linux.c')

diff --git a/src/pkg/runtime/os_linux.c b/src/pkg/runtime/os_linux.c
index 6b86d2b177..6bb376a7e9 100644
--- a/src/pkg/runtime/os_linux.c
+++ b/src/pkg/runtime/os_linux.c
@@ -172,6 +172,7 @@ runtime·get_random_data(byte **rnd, int32 *rnd_len)
 		*rnd = runtime·startup_random_data;
 		*rnd_len = runtime·startup_random_data_len;
 	} else {
+		#pragma dataflag 16 // no pointers
 		static byte urandom_data[HashRandomBytes];
 		int32 fd;
 		fd = runtime·open("/dev/urandom", 0 /* O_RDONLY */, 0);
@@ -283,6 +284,7 @@ runtime·setprof(bool on)
 	USED(on);
 }
 
+#pragma dataflag 16 // no pointers
 static int8 badcallback[] = "runtime: cgo callback on thread not created by Go.\n";
 
 // This runs on a foreign stack, without an m or a g.  No stack split.
@@ -293,6 +295,7 @@ runtime·badcallback(void)
 	runtime·write(2, badcallback, sizeof badcallback - 1);
 }
 
+#pragma dataflag 16  // no pointers
 static int8 badsignal[] = "runtime: signal received on thread not created by Go: ";
 
 // This runs on a foreign stack, without an m or a g.  No stack split.
-- 
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