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callcount

os.OpenFile

standard library

The 338th most-called standard-library function by production calls. Called 3,374 times across 570 modules; 2,564 of those run outside tests and generated code.

All of os → Docs on pkg.go.dev ↗

prod calls
2,564
non-test, non-generated
all calls
3,374
total callsites
modules
570
distinct callers
in loop
8%
of prod calls
in tests
24%
810 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 →

  • Package function100%A direct call to an exported package function, resolved by type.

who calls this

Notable callers

Production calls into OpenFile 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 3,374, 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 OpenFile most in this snapshot.

  • github.com/seaweedfs/seaweedfs1073%
  • github.com/u-root/u-root702%
  • github.com/google/gvisor692%
  • github.com/siderolabs/talos552%
  • github.com/kubevirt/kubevirt491%

siblings

More from os

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