diff options
| author | Austin Clements <austin@google.com> | 2017-02-09 14:03:49 -0500 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2017-02-14 15:52:54 +0000 |
| commit | d089a6c7187f1ff85277515405ec6c641588a7ff (patch) | |
| tree | 2eb4d16038ec3ade478a83249cc879898efd5b8b /src/runtime/runtime2.go | |
| parent | c5ebcd2c8ac6c5bdf85ec0a346974efd4b0cbe49 (diff) | |
| download | go-d089a6c7187f1ff85277515405ec6c641588a7ff.tar.xz | |
runtime: remove stack barriers
Now that we don't rescan stacks, stack barriers are unnecessary. This
removes all of the code and structures supporting them as well as
tests that were specifically for stack barriers.
Updates #17503.
Change-Id: Ia29221730e0f2bbe7beab4fa757f31a032d9690c
Reviewed-on: https://go-review.googlesource.com/36620
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Diffstat (limited to 'src/runtime/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index 80395193da..4812268a19 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -326,12 +326,6 @@ type stack struct { hi uintptr } -// stkbar records the state of a G's stack barrier. -type stkbar struct { - savedLRPtr uintptr // location overwritten by stack barrier PC - savedLRVal uintptr // value overwritten at savedLRPtr -} - type g struct { // Stack parameters. // stack describes the actual stack memory: [stack.lo, stack.hi). @@ -351,8 +345,6 @@ type g struct { sched gobuf syscallsp uintptr // if status==Gsyscall, syscallsp = sched.sp to use during gc syscallpc uintptr // if status==Gsyscall, syscallpc = sched.pc to use during gc - stkbar []stkbar // stack barriers, from low to high (see top of mstkbar.go) - stkbarPos uintptr // index of lowest stack barrier not hit stktopsp uintptr // expected sp at top of stack, to check in traceback param unsafe.Pointer // passed parameter on wakeup atomicstatus uint32 |