| commit | 7ef718f16fa05cd07bb0f7d22aa4bc57067de1f2 | [log] [tgz] |
|---|---|---|
| author | Michael Anthony Knyszek <mknyszek@google.com> | Tue Dec 11 22:03:04 2018 +0000 |
| committer | Michael Knyszek <mknyszek@google.com> | Tue Dec 18 21:05:05 2018 +0000 |
| tree | a55ee712559dc024eba3cf95d6ccdab9ff3d40e6 | |
| parent | d6899463029d8ab0d73c992ccf6639f095435b84 [diff] |
runtime: call mmap with MAP_FIXED on BSDs in race mode This change makes it so that reserving more of the address space for the heap calls mmap with MAP_FIXED in race mode. Race mode requires certain guarantees on where the heap is located in the address space, and on Darwin 10.10 it appears that the kernel may end up ignoring the hint quite often (#26475). Using MAP_FIXED is relatively OK in race mode because nothing else should be mapped in the memory region provided by the initial hints. Fixes #26475. Change-Id: Id7ac1534ee74f6de491bc04441f27dbda09f0285 Reviewed-on: https://go-review.googlesource.com/c/153897 Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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