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callcount

sync.RWMutex.Unlock

standard library

The 48th most-called standard-library method by production calls. Called 30,350 times across 734 modules; 22,718 of those run outside tests and generated code.

0% in production calls vs 2026-W39 (22,651 → 22,718)

All of sync → Docs on pkg.go.dev ↗

prod calls
22,718
non-test, non-generated
all calls
30,350
total callsites
modules
734
distinct callers
in loop
5%
of prod calls
in tests
10%
2,950 calls
resolved
100%
to a known target

resolution mix

How each call resolves

How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →

  • Concrete method83%A method on a value whose type is known exactly.
  • Embedded method17%Reached through an embedded type.
  • Method value<1%A method captured as a value, then called.

who calls this

Notable callers

Production calls into RWMutex.Unlock from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 30,350, prioritizing in-loop and non-test usage. We link to source, never display it.

top callers

The modules that reach for it

The modules that call RWMutex.Unlock most in this snapshot.

  • github.com/nats-io/nats-server/v22,6309%
  • github.com/livekit/livekit2,5869%
  • github.com/hyperledger/fabric2,1547%
  • github.com/kubernetes/kubernetes7422%
  • github.com/seaweedfs/seaweedfs6842%

siblings

More from sync

The other most-called members in this package. See all →