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go / go / b8caed823b39b5a86b694f9ec60a8b43323248e8
commitb8caed823b39b5a86b694f9ec60a8b43323248e8[log] [tgz]
authorDavid Crawshaw <crawshaw@golang.org>Tue Mar 24 09:22:35 2015 -0400
committerDavid Crawshaw <crawshaw@golang.org>Tue Mar 24 19:39:46 2015 +0000
treeb70be88161fee5b49754545ae8848ba061a086a6
parent63f59b6322c78e4b1dd256d8a5fe7e9c468183a4 [diff]
runtime: initialize extra M for cgo during mstart

Previously the extra m needed for cgo callbacks was created on the
first callback. This works for cgo, however the cgocallback mechanism
is also borrowed by badsignal which can run before any cgo calls are
made.

Now we initialize the extra M at runtime startup before any signal
handlers are registered, so badsignal cannot be called until the
extra M is ready.

Updates #10207.

Change-Id: Iddda2c80db6dc52d8b60e2b269670fbaa704c7b3
Reviewed-on: https://go-review.googlesource.com/7978
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: David Crawshaw <crawshaw@golang.org>
3 files changed
tree: b70be88161fee5b49754545ae8848ba061a086a6
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
README.md

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