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9d3416cc91
opentelemetry-go/internal/global
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Bogdan Drutu 9d3416cc91
Fix synchronization issues in global trace delegate implementation (#1686) 
* Fix synchronization issues in global trace delegate implementation

Running tests with `-race` and before the fix
```
➜  opentelemetry-go git:(fixconcurrency) go test -race go.opentelemetry.io/otel/internal/global
==================
WARNING: DATA RACE
Write at 0x00c00010ffc8 by goroutine 28:
  go.opentelemetry.io/otel/internal/global.(*tracer).setDelegate.func1()
      /Users/lazy/github/opentelemetry-go/internal/global/trace.go:118 +0xf4
  sync.(*Once).doSlow()
      /usr/local/opt/go/libexec/src/sync/once.go:68 +0x109
  sync.(*Once).Do()
      /usr/local/opt/go/libexec/src/sync/once.go:59 +0x68
  go.opentelemetry.io/otel/internal/global.(*tracer).setDelegate()
      /Users/lazy/github/opentelemetry-go/internal/global/trace.go:118 +0x76
  go.opentelemetry.io/otel/internal/global.(*tracerProvider).setDelegate()
      /Users/lazy/github/opentelemetry-go/internal/global/trace.go:75 +0x16f
  go.opentelemetry.io/otel/internal/global.SetTracerProvider.func1()
      /Users/lazy/github/opentelemetry-go/internal/global/state.go:65 +0xd0
  sync.(*Once).doSlow()
      /usr/local/opt/go/libexec/src/sync/once.go:68 +0x109
  sync.(*Once).Do()
      /usr/local/opt/go/libexec/src/sync/once.go:59 +0x68
  go.opentelemetry.io/otel/internal/global.SetTracerProvider()
      /Users/lazy/github/opentelemetry-go/internal/global/state.go:57 +0x79
  go.opentelemetry.io/otel.SetTracerProvider()
      /Users/lazy/github/opentelemetry-go/trace.go:43 +0x388
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:177 +0x373
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202

Previous read at 0x00c00010ffc8 by goroutine 29:
  go.opentelemetry.io/otel/internal/global.(*tracer).Start()
      /Users/lazy/github/opentelemetry-go/internal/global/trace.go:124 +0x64
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines.func1()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:165 +0xf1

Goroutine 28 (running) created at:
  testing.(*T).Run()
      /usr/local/opt/go/libexec/src/testing/testing.go:1239 +0x5d7
  testing.runTests.func1()
      /usr/local/opt/go/libexec/src/testing/testing.go:1512 +0xa6
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202
  testing.runTests()
      /usr/local/opt/go/libexec/src/testing/testing.go:1510 +0x612
  testing.(*M).Run()
      /usr/local/opt/go/libexec/src/testing/testing.go:1418 +0x3b3
  go.opentelemetry.io/otel/internal/global_test.TestMain()
      /Users/lazy/github/opentelemetry-go/internal/global/internal_test.go:39 +0x4dc
  main.main()
      _testmain.go:85 +0x271

Goroutine 29 (running) created at:
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:160 +0x259
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202
==================
==================
WARNING: DATA RACE
Write at 0x00c00037a000 by goroutine 29:
  sync/atomic.StoreInt32()
      /usr/local/opt/go/libexec/src/runtime/race_amd64.s:242 +0xb
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines.func2.1()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:183 +0x6d
  go.opentelemetry.io/otel/internal/global_test.fnTracer.Start()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:81 +0x98
  go.opentelemetry.io/otel/internal/global.(*tracer).Start()
      /Users/lazy/github/opentelemetry-go/internal/global/trace.go:125 +0xfd
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines.func1()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:165 +0xf1

Previous write at 0x00c00037a000 by goroutine 28:
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:176 +0x2c4
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202

Goroutine 29 (running) created at:
  go.opentelemetry.io/otel/internal/global_test.TestTracerDelegates_MultiGoRoutines()
      /Users/lazy/github/opentelemetry-go/internal/global/trace_test.go:160 +0x259
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202

Goroutine 28 (running) created at:
  testing.(*T).Run()
      /usr/local/opt/go/libexec/src/testing/testing.go:1239 +0x5d7
  testing.runTests.func1()
      /usr/local/opt/go/libexec/src/testing/testing.go:1512 +0xa6
  testing.tRunner()
      /usr/local/opt/go/libexec/src/testing/testing.go:1194 +0x202
  testing.runTests()
      /usr/local/opt/go/libexec/src/testing/testing.go:1510 +0x612
  testing.(*M).Run()
      /usr/local/opt/go/libexec/src/testing/testing.go:1418 +0x3b3
  go.opentelemetry.io/otel/internal/global_test.TestMain()
      /Users/lazy/github/opentelemetry-go/internal/global/internal_test.go:39 +0x4dc
  main.main()
      _testmain.go:85 +0x271
==================
--- FAIL: TestTracerDelegates_MultiGoRoutines (0.20s)
    testing.go:1093: race detected during execution of test
FAIL
FAIL    go.opentelemetry.io/otel/internal/global        0.920s
FAIL
```

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

* Update internal/global/trace_test.go

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

* Update internal/global/trace_test.go

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

* Make tests not flaky

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
2021-03-10 08:45:31 -08:00
..
benchmark_test.go Rename otel/label -> otel/attribute (#1541) 2021-02-18 12:59:37 -05:00
internal_test.go Rename internal/testing to internal/internaltest (#1449) 2021-01-12 08:56:16 -08:00
meter_test.go Rename otel/label -> otel/attribute (#1541) 2021-02-18 12:59:37 -05:00
meter.go Rename otel/label -> otel/attribute (#1541) 2021-02-18 12:59:37 -05:00
propagator_test.go Move Version function and code from global to toplevel (#1330) 2020-11-16 09:30:54 -08:00
propagator.go Move Version function and code from global to toplevel (#1330) 2020-11-16 09:30:54 -08:00
registry_test.go Move Version function and code from global to toplevel (#1330) 2020-11-16 09:30:54 -08:00
state_test.go Move Version function and code from global to toplevel (#1330) 2020-11-16 09:30:54 -08:00
state.go Move Version function and code from global to toplevel (#1330) 2020-11-16 09:30:54 -08:00
trace_test.go Fix synchronization issues in global trace delegate implementation (#1686) 2021-03-10 08:45:31 -08:00
trace.go Fix synchronization issues in global trace delegate implementation (#1686) 2021-03-10 08:45:31 -08:00