1 // Copyright 2015 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_THREADING_PLATFORM_THREAD_INTERNAL_POSIX_H_ 6 #define BASE_THREADING_PLATFORM_THREAD_INTERNAL_POSIX_H_ 7 8 #include "base/threading/platform_thread.h" 9 10 namespace base { 11 12 namespace internal { 13 14 struct ThreadPriorityToNiceValuePair { 15 ThreadPriority priority; 16 int nice_value; 17 }; 18 extern const ThreadPriorityToNiceValuePair kThreadPriorityToNiceValueMap[4]; 19 20 // Returns the nice value matching |priority| based on the platform-specific 21 // implementation of kThreadPriorityToNiceValueMap. 22 int ThreadPriorityToNiceValue(ThreadPriority priority); 23 24 // Returns the ThreadPrioirty matching |nice_value| based on the platform- 25 // specific implementation of kThreadPriorityToNiceValueMap. 26 ThreadPriority NiceValueToThreadPriority(int nice_value); 27 28 // Allows platform specific tweaks to the generic POSIX solution for 29 // SetCurrentThreadPriority. Returns true if the platform-specific 30 // implementation handled this |priority| change, false if the generic 31 // implementation should instead proceed. 32 bool SetCurrentThreadPriorityForPlatform(ThreadPriority priority); 33 34 // Returns true if there is a platform-specific ThreadPriority set on the 35 // current thread (and returns the actual ThreadPriority via |priority|). 36 // Returns false otherwise, leaving |priority| untouched. 37 bool GetCurrentThreadPriorityForPlatform(ThreadPriority* priority); 38 39 } // namespace internal 40 41 } // namespace base 42 43 #endif // BASE_THREADING_PLATFORM_THREAD_INTERNAL_POSIX_H_ 44
