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| func main() { | |
| ctx, task := trace.NewTask(context.Background(), "main start") | |
| var wg sync.WaitGroup | |
| wg.Add(2) | |
| go func() { | |
| defer wg.Done() | |
| r := trace.StartRegion(ctx, "reading file") | |
| defer r.End() |
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| type struct1 struct { | |
| a, b int64 | |
| c, d float64 | |
| e *struct2 | |
| } | |
| type struct2 struct { | |
| f, g int64 | |
| h, i float64 | |
| } |
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| func BenchmarkAllocationEveryMs(b *testing.B) { | |
| // need permanent allocation to clear see when the heap double its size | |
| var s *[]int | |
| tmp := make([]int, 1100000, 1100000) | |
| s = &tmp | |
| var a *[]int | |
| for i := 0; i < b.N; i++ { | |
| tmp := make([]int, 10000, 10000) | |
| a = &tmp |
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| type File struct { d int } | |
| func main() { | |
| p := openFile("t.txt") | |
| content := readFile(p.d) | |
| println("Here is the content: "+content) | |
| } | |
| func openFile(path string) *File { |
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| package main | |
| import ( | |
| "fmt" | |
| "go/scanner" | |
| "go/token" | |
| "io/ioutil" | |
| ) | |
| func main() { |
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| package main | |
| import "math/rand" | |
| func main() { | |
| println(run()) | |
| } | |
| //go:noinline | |
| func run() int { |
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| package main | |
| func main() { | |
| a := 1 | |
| b := 2 | |
| if true { | |
| add(a, b) | |
| } | |
| } |
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| func main() { | |
| done := make(chan bool, 1) | |
| var mu sync.Mutex | |
| // goroutine 1 | |
| go func() { | |
| for { | |
| select { | |
| case <-done: | |
| return |
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| type Item = int | |
| type waiter struct { | |
| n int | |
| c chan []Item | |
| } | |
| type state struct { | |
| items []Item | |
| wait []waiter |
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| func emptyInterface(i interface {}) { | |
| s := i.(*MultipleFieldStructure) | |
| y = s | |
| } |
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