126 lines
2.4 KiB
Go
126 lines
2.4 KiB
Go
//go:build llgo
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package tls_test
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import (
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"fmt"
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"sync"
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"testing"
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"github.com/goplus/llgo/runtime/internal/clite/tls"
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)
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func TestAllocReadWrite(t *testing.T) {
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h := tls.Alloc[int](nil)
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if got := h.Get(); got != 0 {
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t.Fatalf("zero slot = %d, want 0", got)
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}
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h.Set(42)
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if got := h.Get(); got != 42 {
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t.Fatalf("Set/Get mismatch: got %d", got)
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}
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h.Clear()
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if got := h.Get(); got != 0 {
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t.Fatalf("Clear() did not reset slot, got %d", got)
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}
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}
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func TestAllocThreadLocalIsolation(t *testing.T) {
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h := tls.Alloc[int](nil)
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h.Set(7)
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const want = 99
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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if got := h.Get(); got != 0 {
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t.Errorf("new goroutine initial value = %d, want 0", got)
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}
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h.Set(want)
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if got := h.Get(); got != want {
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t.Errorf("goroutine value = %d, want %d", got, want)
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}
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}()
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wg.Wait()
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if got := h.Get(); got != 7 {
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t.Fatalf("main goroutine value changed to %d", got)
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}
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}
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func TestDestructorRuns(t *testing.T) {
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var mu sync.Mutex
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var calls int
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values := make([]int, 0, 1)
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h := tls.Alloc[*int](func(p **int) {
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mu.Lock()
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defer mu.Unlock()
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if p != nil && *p != nil {
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calls++
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values = append(values, **p)
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}
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})
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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val := new(int)
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*val = 123
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h.Set(val)
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}()
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wg.Wait()
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mu.Lock()
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defer mu.Unlock()
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if calls == 0 {
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t.Fatalf("expected destructor to be invoked")
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}
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if len(values) != 1 || values[0] != 123 {
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t.Fatalf("destructor saw unexpected values: %v", values)
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}
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}
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func TestAllocStress(t *testing.T) {
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const sequentialIterations = 200_000
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h := tls.Alloc[int](nil)
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for i := 0; i < sequentialIterations; i++ {
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h.Set(i)
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if got := h.Get(); got != i {
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t.Fatalf("stress iteration %d: got %d want %d", i, got, i)
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}
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}
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var wg sync.WaitGroup
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const (
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goroutines = 32
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iterationsPerGoroutine = 1_000
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)
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errs := make(chan error, goroutines)
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wg.Add(goroutines)
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for g := 0; g < goroutines; g++ {
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go func(offset int) {
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defer wg.Done()
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local := tls.Alloc[int](nil)
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for i := 0; i < iterationsPerGoroutine; i++ {
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v := offset*iterationsPerGoroutine + i
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local.Set(v)
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if got := local.Get(); got != v {
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errs <- fmt.Errorf("goroutine %d iteration %d: got %d want %d", offset, i, got, v)
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return
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}
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}
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}(g)
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}
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wg.Wait()
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close(errs)
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for err := range errs {
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if err != nil {
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t.Fatal(err)
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}
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}
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}
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