race.go

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build race && ((linux && (amd64 || arm64 || ppc64le || s390x)) || ((freebsd || netbsd || openbsd || windows) && amd64))
     6  
     7  package race
     8  
     9  // This file merely ensures that we link in runtime/cgo in race build,
    10  // this in turn ensures that runtime uses pthread_create to create threads.
    11  // The prebuilt race runtime lives in race_GOOS_GOARCH.syso.
    12  // Calls to the runtime are done directly from src/runtime/race.go.
    13  
    14  // On darwin we always use system DLLs to create threads,
    15  // so we use race_darwin_$GOARCH.go to provide the syso-derived
    16  // symbol information without needing to invoke cgo.
    17  // This allows -race to be used on Mac systems without a C toolchain.
    18  
    19  // void __race_unused_func(void);
    20  import "C"
    21
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