Source file test/inline_sync.go
Documentation: test
1 // +build !nacl,!386,!wasm,!arm,!gcflags_noopt 2 // errorcheck -0 -m 3 4 // Copyright 2019 The Go Authors. All rights reserved. 5 // Use of this source code is governed by a BSD-style 6 // license that can be found in the LICENSE file. 7 8 // Test, using compiler diagnostic flags, that inlining of functions 9 // imported from the sync package is working. 10 // Compiles but does not run. 11 12 // FIXME: This test is disabled on architectures where atomic operations 13 // are function calls rather than intrinsics, since this prevents inlining 14 // of the sync fast paths. This test should be re-enabled once the problem 15 // is solved. 16 17 package foo 18 19 import ( 20 "sync" 21 ) 22 23 var mutex *sync.Mutex 24 25 func small5() { // ERROR "can inline small5" 26 // the Unlock fast path should be inlined 27 mutex.Unlock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Unlock" 28 } 29 30 func small6() { // ERROR "can inline small6" 31 // the Lock fast path should be inlined 32 mutex.Lock() // ERROR "inlining call to sync\.\(\*Mutex\)\.Lock" 33 } 34 35 var once *sync.Once 36 37 func small7() { // ERROR "can inline small7" 38 // the Do fast path should be inlined 39 once.Do(small5) // ERROR "inlining call to sync\.\(\*Once\)\.Do" 40 } 41 42 var rwmutex *sync.RWMutex 43 44 func small8() { // ERROR "can inline small8" 45 // the RUnlock fast path should be inlined 46 rwmutex.RUnlock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RUnlock" 47 } 48 49 func small9() { // ERROR "can inline small9" 50 // the RLock fast path should be inlined 51 rwmutex.RLock() // ERROR "inlining call to sync\.\(\*RWMutex\)\.RLock" 52 } 53 54