| commit | 96942f21f09b869fac5cb85ab362f473ba625f9e | |
| author | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 13 Sep 2018 22:25:58 +0000 (13 22:25 +0000) | ||
| committer | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 13 Sep 2018 22:25:58 +0000 (13 22:25 +0000) | ||
| tree | 38fe52c7aeba372693d83041bf5037d8fbb2c311 | treesnapshot (tar.gz zip) |
| parent | 25dd006e218e0249275f2e7149681dff2d47cebe | commitdiff |
compiler, runtime: call gcWriteBarrier instead of writebarrierptr
In 1.11 writebarrierptr is going away, so change the compiler to call
gcWriteBarrier instead. We weren't using gcWriteBarrier before;
adjust the implementation to use the putFast method.
This revealed a problem in the kickoff function. When using cgo,
kickoff can be called on the g0 of an m allocated by newExtraM. In
that case the m will generally have a p, but systemstack may be called
by wbBufFlush as part of flushing the write barrier buffer. At that
point the buffer is full, so we can not do a write barrier. So adjust
the existing code in kickoff so that in the case where we are g0,
don't do any write barrier at all.
Reviewed-on: https://go-review.googlesource.com/131395
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@264295 138bc75d-0d04-0410-961f-82ee72b054a4
In 1.11 writebarrierptr is going away, so change the compiler to call
gcWriteBarrier instead. We weren't using gcWriteBarrier before;
adjust the implementation to use the putFast method.
This revealed a problem in the kickoff function. When using cgo,
kickoff can be called on the g0 of an m allocated by newExtraM. In
that case the m will generally have a p, but systemstack may be called
by wbBufFlush as part of flushing the write barrier buffer. At that
point the buffer is full, so we can not do a write barrier. So adjust
the existing code in kickoff so that in the case where we are g0,
don't do any write barrier at all.
Reviewed-on: https://go-review.googlesource.com/131395
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@264295 138bc75d-0d04-0410-961f-82ee72b054a4