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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,43 @@ | ||
package utils | ||
|
||
import ( | ||
"runtime" | ||
"sync" | ||
) | ||
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type TraceData struct { | ||
data []byte | ||
size int | ||
} | ||
|
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func (data *TraceData) Len() int { | ||
return data.size | ||
} | ||
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func (data *TraceData) Data() []byte { | ||
return data.data[:data.size] | ||
} | ||
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func (data *TraceData) String() string { | ||
return string(data.Data()) | ||
} | ||
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// call this to reuse the memory | ||
func (data *TraceData) Recycle() { | ||
tracePool.Put(data) | ||
} | ||
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var tracePool = &sync.Pool{ | ||
New: func() interface{} { | ||
return &TraceData{ | ||
data: make([]byte, 1024*64), | ||
size: 0, | ||
} | ||
}, | ||
} | ||
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func StackTraceData() *TraceData { | ||
data := tracePool.Get().(*TraceData) | ||
data.size = runtime.Stack(data.data, false) | ||
return data | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,33 @@ | ||
package utils | ||
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import ( | ||
"fmt" | ||
"testing" | ||
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"github.com/stretchr/testify/assert" | ||
) | ||
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func TestTrace(t *testing.T) { | ||
data := StackTraceData() | ||
ptr := fmt.Sprintf("%p", data) | ||
assert.True(t, data.Len() > 0) | ||
data.Recycle() | ||
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data1 := StackTraceData() | ||
ptr1 := fmt.Sprintf("%p", data1) | ||
assert.True(t, data1.Len() > 0) | ||
data1.Recycle() | ||
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data2 := StackTraceData() | ||
ptr2 := fmt.Sprintf("%p", data2) | ||
assert.True(t, data2.Len() > 0) | ||
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data3 := StackTraceData() | ||
ptr3 := fmt.Sprintf("%p", data3) | ||
assert.True(t, data3.Len() > 0) | ||
data2.Recycle() | ||
data3.Recycle() | ||
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assert.Equal(t, ptr, ptr1) | ||
assert.NotEqual(t, ptr2, ptr3) | ||
} |