/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#pragma once
+#include <thread>
#include <pthread.h>
-#include "Range.h"
+#include <folly/Range.h>
namespace folly {
+// This looks a bit weird, but it's necessary to avoid
+// having an undefined compiler function called.
+#if defined(__GLIBC__) && !defined(__APPLE__) && !defined(__ANDROID__)
+#if __GLIBC_PREREQ(2, 12)
+// has pthread_setname_np(pthread_t, const char*) (2 params)
+#define FOLLY_HAS_PTHREAD_SETNAME_NP_THREAD_NAME 1
+#endif
+#endif
+#if defined(__APPLE__) && defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
+// has pthread_setname_np(const char*) (1 param)
+#define FOLLY_HAS_PTHREAD_SETNAME_NP_NAME 1
+#endif
+#endif
+
+template <typename T>
+inline bool setThreadName(T /* id */, StringPiece /* name */) {
+ static_assert(
+ std::is_same<T, pthread_t>::value ||
+ std::is_same<T, std::thread::native_handle_type>::value,
+ "type must be pthread_t or std::thread::native_handle_type");
+ return false;
+}
+
+#ifdef FOLLY_HAS_PTHREAD_SETNAME_NP_THREAD_NAME
+template <>
inline bool setThreadName(pthread_t id, StringPiece name) {
-#if (defined(__GLIBC__) && __GLIBC_PREREQ(2, 12))
return 0 == pthread_setname_np(id, name.fbstr().substr(0, 15).c_str());
-#else
- return false;
+}
#endif
+
+#ifdef FOLLY_HAS_PTHREAD_SETNAME_NP_NAME
+template <>
+inline bool setThreadName(pthread_t id, StringPiece name) {
+ // Since OS X 10.6 it is possible for a thread to set its own name,
+ // but not that of some other thread.
+ if (pthread_equal(pthread_self(), id)) {
+ return 0 == pthread_setname_np(name.fbstr().c_str());
+ }
+ return false;
}
+#endif
inline bool setThreadName(StringPiece name) {
return setThreadName(pthread_self(), name);