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test/inline_sync.go
53 строки
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Prabhav Dogra
sync: use atomic.Bool for Once.done
22 апр 2025, 18:28
22 апр 2025, 18:28
95611c0
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// errorcheck -0 -m //go:build !nacl && !386 && !wasm && !arm && !gcflags_noopt // Copyright 2019 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Test, using compiler diagnostic flags, that inlining of functions // imported from the sync package is working. // Compiles but does not run. // FIXME: This test is disabled on architectures where atomic operations // are function calls rather than intrinsics, since this prevents inlining // of the sync fast paths. This test should be re-enabled once the problem // is solved. package foo import ( "sync" ) var mutex *sync.Mutex func small5() { // ERROR "can inline small5" // the Unlock fast path should be inlined mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock" } func small6() { // ERROR "can inline small6" // the Lock fast path should be inlined mutex.Lock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Lock" } var once *sync.Once func small7() { // ERROR "can inline small7" // the Do fast path should be inlined once.Do(small5) // ERROR "inlining call to sync\.\(\*Once\)\.Do" "inlining call to atomic\.\(\*Bool\)\.Load" } var rwmutex *sync.RWMutex func small8() { // ERROR "can inline small8" // the RUnlock fast path should be inlined rwmutex.RUnlock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RUnlock" "inlining call to atomic\.\(\*Int32\)\.Add" } func small9() { // ERROR "can inline small9" // the RLock fast path should be inlined rwmutex.RLock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RLock" "inlining call to atomic\.\(\*Int32\)\.Add" }