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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2018-01-17 14:20:29 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2018-01-17 14:20:29 +0000 |
| commit | c6d6367f848cfd8381aba41e035c5e7e873667c5 (patch) | |
| tree | a218e98243463fc27f5053b4444e2544c63cd57a /libgo/go/runtime/proc.go | |
| parent | 9bff0086915f544fa648ea81131f035cb9ce79a4 (diff) | |
| download | gcc-c6d6367f848cfd8381aba41e035c5e7e873667c5.zip gcc-c6d6367f848cfd8381aba41e035c5e7e873667c5.tar.gz gcc-c6d6367f848cfd8381aba41e035c5e7e873667c5.tar.bz2 | |
libgo: update to Go1.10beta2 release
Reviewed-on: https://go-review.googlesource.com/87897
From-SVN: r256794
Diffstat (limited to 'libgo/go/runtime/proc.go')
| -rw-r--r-- | libgo/go/runtime/proc.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libgo/go/runtime/proc.go b/libgo/go/runtime/proc.go index 515efaa..2972daa0 100644 --- a/libgo/go/runtime/proc.go +++ b/libgo/go/runtime/proc.go @@ -2220,6 +2220,12 @@ stop: return gp, false } + // Before we drop our P, make a snapshot of the allp slice, + // which can change underfoot once we no longer block + // safe-points. We don't need to snapshot the contents because + // everything up to cap(allp) is immutable. + allpSnapshot := allp + // return P and block lock(&sched.lock) if sched.gcwaiting != 0 || _p_.runSafePointFn != 0 { @@ -2259,7 +2265,7 @@ stop: } // check all runqueues once again - for _, _p_ := range allp { + for _, _p_ := range allpSnapshot { if !runqempty(_p_) { lock(&sched.lock) _p_ = pidleget() |