| // Copyright (c) 2016 Uber Technologies, Inc. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| // THE SOFTWARE. |
| |
| package atomic |
| |
| import ( |
| "runtime" |
| "sync" |
| "testing" |
| ) |
| |
| const ( |
| _parallelism = 4 |
| _iterations = 1000 |
| ) |
| |
| func runStress(f func()) { |
| defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(_parallelism)) |
| |
| var wg sync.WaitGroup |
| wg.Add(_parallelism) |
| for i := 0; i < _parallelism; i++ { |
| go func() { |
| defer wg.Done() |
| for j := 0; j < _iterations; j++ { |
| f() |
| } |
| }() |
| } |
| |
| wg.Wait() |
| } |
| |
| func TestStressInt32(t *testing.T) { |
| var atom Int32 |
| runStress(func() { |
| atom.Load() |
| atom.Add(1) |
| atom.Sub(2) |
| atom.Inc() |
| atom.Dec() |
| atom.CAS(1, 0) |
| atom.Swap(5) |
| atom.Store(1) |
| }) |
| } |
| |
| func TestStressInt64(t *testing.T) { |
| var atom Int64 |
| runStress(func() { |
| atom.Load() |
| atom.Add(1) |
| atom.Sub(2) |
| atom.Inc() |
| atom.Dec() |
| atom.CAS(1, 0) |
| atom.Swap(5) |
| atom.Store(1) |
| |
| }) |
| } |
| |
| func TestStressUint32(t *testing.T) { |
| var atom Uint32 |
| runStress(func() { |
| atom.Load() |
| atom.Add(1) |
| atom.Sub(2) |
| atom.Inc() |
| atom.Dec() |
| atom.CAS(1, 0) |
| atom.Swap(5) |
| atom.Store(1) |
| }) |
| } |
| |
| func TestStressUint64(t *testing.T) { |
| var atom Uint64 |
| runStress(func() { |
| atom.Load() |
| atom.Add(1) |
| atom.Sub(2) |
| atom.Inc() |
| atom.Dec() |
| atom.CAS(1, 0) |
| atom.Swap(5) |
| atom.Store(1) |
| }) |
| } |
| |
| func TestStressFloat64(t *testing.T) { |
| var atom Float64 |
| runStress(func() { |
| atom.Load() |
| atom.CAS(1.0, 0.1) |
| atom.Add(1.1) |
| atom.Sub(0.2) |
| atom.Store(1.0) |
| }) |
| } |
| |
| func TestStressBool(t *testing.T) { |
| var atom Bool |
| runStress(func() { |
| atom.Load() |
| atom.Store(false) |
| atom.Swap(true) |
| atom.Load() |
| atom.Toggle() |
| atom.Toggle() |
| }) |
| } |
| |
| func TestStressString(t *testing.T) { |
| var atom String |
| runStress(func() { |
| atom.Load() |
| atom.Store("abc") |
| atom.Load() |
| atom.Store("def") |
| |
| }) |
| } |