qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-18 06:04:53 -07:00
Code Releases Activity

runtime: don't reserve space for stack barriers if they're off

Browse Source 
Change-Id: I79ebccdaefc434c47b77bd545cc3c50723c18b61
Reviewed-on: https://go-review.googlesource.com/31135
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
This commit is contained in:
Austin Clements 2016-09-12 17:48:34 -04:00
parent 5b7497f327
commit 7bc42a145a
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/runtime/mstkbar.go
View File

@ -148,6 +148,10 @@ var firstStackBarrierOffset = 1024
// gcMaxStackBarriers returns the maximum number of stack barriers
// that can be installed in a stack of stackSize bytes.
func gcMaxStackBarriers(stackSize int) (n int) {
if debug.gcstackbarrieroff > 0 {
return 0
}
if firstStackBarrierOffset == 0 {
// Special debugging case for inserting stack barriers
// at every frame. Steal half of the stack for the