From: Ian Lance Taylor <iant@golang.org>
Date: Sun, 19 Apr 2015 01:19:06 +0000 (-0700)
Subject: runtime: no deadlock error if buildmode=c-archive or c-shared
X-Git-Tag: go1.5beta1~1013
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=725aa3451a73498ed43cf2279f1609a4dffbe04a;p=gostls13.git

runtime: no deadlock error if buildmode=c-archive or c-shared

Change-Id: I4ee6dac32bd3759aabdfdc92b235282785fbcca9
Reviewed-on: https://go-review.googlesource.com/9083
Reviewed-by: David Crawshaw <crawshaw@golang.org>
---

diff --git a/src/runtime/proc1.go b/src/runtime/proc1.go
index 2786e7e441..a46ebc8cec 100644
--- a/src/runtime/proc1.go
+++ b/src/runtime/proc1.go
@@ -2711,6 +2711,13 @@ func incidlelocked(v int32) {
 // Check for deadlock situation.
 // The check is based on number of running M's, if 0 -> deadlock.
 func checkdead() {
+	// For -buildmode=c-shared or -buildmode=c-archive it's OK if
+	// there are no running goroutines.  The calling program is
+	// assumed to be running.
+	if islibrary || isarchive {
+		return
+	}
+
 	// If we are dying because of a signal caught on an already idle thread,
 	// freezetheworld will cause all running threads to block.
 	// And runtime will essentially enter into deadlock state,