From 709e03f43dce8e6fde3398e01255c08d22cb1ee2 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Fri, 12 Apr 2013 05:23:38 -0700 Subject: [PATCH] runtime: add a hook to disable precise GC This will let us ask people to rebuild the Go system without precise GC, and then rebuild and retest their program, to see if precise GC is causing whatever problem they are having. R=golang-dev, r CC=golang-dev https://golang.org/cl/8700043 --- src/pkg/runtime/mgc0.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/pkg/runtime/mgc0.c b/src/pkg/runtime/mgc0.c index 64b5f0464a..f9dbdbb4a1 100644 --- a/src/pkg/runtime/mgc0.c +++ b/src/pkg/runtime/mgc0.c @@ -19,6 +19,7 @@ enum { DebugMark = 0, // run second pass to check mark CollectStats = 0, ScanStackByFrames = 0, + IgnorePreciseGC = 0, // Four bits per word (see #defines below). wordsPerBitmapWord = sizeof(void*)*8/4, @@ -771,6 +772,9 @@ scanblock(Workbuf *wbuf, Obj *wp, uintptr nobj, bool keepworking) pc = defaultProg; } + if(IgnorePreciseGC) + pc = defaultProg; + pc++; stack_top.b = (uintptr)b; -- 2.50.0