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author | Michael Hudson-Doyle <michael.hudson@canonical.com> | 2015-10-16 09:56:07 +1300 |
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committer | Michael Hudson-Doyle <michael.hudson@canonical.com> | 2015-10-16 07:11:04 +0000 |
commit | 0b8d583320b2f6247669ef0bb1ba011054ca1c88 (patch) | |
tree | 4365cd408a3b041be5a5c5ce6e5d43c88651b3b1 /src/runtime/sigqueue_plan9.go | |
parent | 4c2465d47d8c706832bbc57668680a3ffc4d800f (diff) | |
download | go-0b8d583320b2f6247669ef0bb1ba011054ca1c88.tar.gz go-0b8d583320b2f6247669ef0bb1ba011054ca1c88.zip |
runtime, os/signal: use //go:linkname instead of assembly stubs to get access to runtime functions
os/signal depends on a few unexported runtime functions. This removes the
assembly stubs it used to get access to these in favour of using
//go:linkname in runtime to make the functions accessible to os/signal.
This is motivated by ppc64le shared libraries, where you cannot BR to a symbol
defined in a shared library (only BL), but it seems like an improvment anyway.
Change-Id: I09361203ce38070bd3f132f6dc5ac212f2dc6f58
Reviewed-on: https://go-review.googlesource.com/15871
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>
Diffstat (limited to 'src/runtime/sigqueue_plan9.go')
-rw-r--r-- | src/runtime/sigqueue_plan9.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/runtime/sigqueue_plan9.go b/src/runtime/sigqueue_plan9.go index f000fabd1a..89f96be2e9 100644 --- a/src/runtime/sigqueue_plan9.go +++ b/src/runtime/sigqueue_plan9.go @@ -6,6 +6,8 @@ package runtime +import _ "unsafe" + const qsize = 64 var sig struct { @@ -92,6 +94,7 @@ func sendNote(s *byte) bool { // Called to receive the next queued signal. // Must only be called from a single goroutine at a time. +//go:linkname signal_recv os/signal.signal_recv func signal_recv() string { for { note := sig.q.pop() @@ -108,6 +111,7 @@ func signal_recv() string { } // Must only be called from a single goroutine at a time. +//go:linkname signal_enable os/signal.signal_enable func signal_enable(s uint32) { if !sig.inuse { // The first call to signal_enable is for us @@ -120,9 +124,11 @@ func signal_enable(s uint32) { } // Must only be called from a single goroutine at a time. +//go:linkname signal_disable os/signal.signal_disable func signal_disable(s uint32) { } // Must only be called from a single goroutine at a time. +//go:linkname signal_ignore os/signal.signal_ignore func signal_ignore(s uint32) { } |