diff options
Diffstat (limited to 'src/runtime/proc.go')
| -rw-r--r-- | src/runtime/proc.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/runtime/proc.go b/src/runtime/proc.go index 93d329d15e..3723f84a05 100644 --- a/src/runtime/proc.go +++ b/src/runtime/proc.go @@ -1862,10 +1862,16 @@ func startTemplateThread() { if GOARCH == "wasm" { // no threads on wasm yet return } + + // Disable preemption to guarantee that the template thread will be + // created before a park once haveTemplateThread is set. + mp := acquirem() if !atomic.Cas(&newmHandoff.haveTemplateThread, 0, 1) { + releasem(mp) return } newm(templateThread, nil) + releasem(mp) } // templateThread is a thread in a known-good state that exists solely |