[dev.garbage] all: merge dev.cc into dev.garbage

The garbage collector is now written in Go.
There is plenty to clean up (just like on dev.cc).

all.bash passes on darwin/amd64, darwin/386, linux/amd64, linux/386.

TBR=rlh
R=austin, rlh, bradfitz
CC=golang-codereviews
https://golang.org/cl/173250043

1 files changed, 3 insertions, 18 deletions

diff --git a/src/runtime/sigqueue.go b/src/runtime/sigqueue.go
index 2d9c24d2d2..82ead228fa 100644
--- a/src/runtime/sigqueue.go
+++ b/src/runtime/sigqueue.go
@@ -45,7 +45,7 @@ const (
 
 // Called from sighandler to send a signal back out of the signal handling thread.
 // Reports whether the signal was sent. If not, the caller typically crashes the program.
-func sigsend(s int32) bool {
+func sigsend(s uint32) bool {
 	bit := uint32(1) << uint(s&31)
 	if !sig.inuse || s < 0 || int(s) >= 32*len(sig.wanted) || sig.wanted[s/32]&bit == 0 {
 		return false
@@ -139,7 +139,7 @@ func signal_enable(s uint32) {
 		return
 	}
 	sig.wanted[s/32] |= 1 << (s & 31)
-	sigenable_go(s)
+	sigenable(s)
 }
 
 // Must only be called from a single goroutine at a time.
@@ -148,7 +148,7 @@ func signal_disable(s uint32) {
 		return
 	}
 	sig.wanted[s/32] &^= 1 << (s & 31)
-	sigdisable_go(s)
+	sigdisable(s)
 }
 
 // This runs on a foreign stack, without an m or a g.  No stack split.
@@ -156,18 +156,3 @@ func signal_disable(s uint32) {
 func badsignal(sig uintptr) {
 	cgocallback(unsafe.Pointer(funcPC(sigsend)), noescape(unsafe.Pointer(&sig)), unsafe.Sizeof(sig))
 }
-
-func sigenable_m()
-func sigdisable_m()
-
-func sigenable_go(s uint32) {
-	g := getg()
-	g.m.scalararg[0] = uintptr(s)
-	onM(sigenable_m)
-}
-
-func sigdisable_go(s uint32) {
-	g := getg()
-	g.m.scalararg[0] = uintptr(s)
-	onM(sigdisable_m)
-}