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| author | Josh Bleecher Snyder <josh@tailscale.com> | 2020-12-15 17:44:21 -0800 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2021-01-07 14:49:44 +0100 |
| commit | f7bbdc31a0065e3d5a68a3e6c7a7449954fdd339 (patch) | |
| tree | b2605ff0dd0a12be4055d8b936abdb666a88ae9a /device/peer.go | |
| parent | 70861686d3005de91b45d38e5b16fd3132a4a872 (diff) | |
device: fix data race in peer.timersActive
Found by the race detector and existing tests.
To avoid introducing a lock into this hot path,
calculate and cache whether any peers exist.
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
Diffstat (limited to 'device/peer.go')
| -rw-r--r-- | device/peer.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/device/peer.go b/device/peer.go index fe6de33..73e6083 100644 --- a/device/peer.go +++ b/device/peer.go @@ -125,6 +125,7 @@ func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) { // add device.peers.keyMap[pk] = peer + device.peers.empty.Set(false) // start peer |