Test dynamic priorities

base/threading/platform_thread_posix.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/platform_thread.h"
 
 #include <errno.h>
 #include <pthread.h>
 #include <sched.h>
 #include <stddef.h>
@@ skipping 215 matching lines @@
   // equivalent but makes sandboxing easier (https://crbug.com/399473).
   const int nice_setting = internal::ThreadPriorityToNiceValue(priority);
   if (setpriority(PRIO_PROCESS, 0, nice_setting)) {
     DVPLOG(1) << "Failed to set nice value of thread ("
               << PlatformThread::CurrentId() << ") to " << nice_setting;
   }
 #endif  // defined(OS_NACL)
 }
 
 // static
+bool PlatformThread::SetThreadPriority(PlatformThreadId tid,
+                                       ThreadPriority priority) {
+  return internal::SetThreadPriority(tid, priority);
+}
+
+// static
 ThreadPriority PlatformThread::GetCurrentThreadPriority() {
 #if defined(OS_NACL)
   NOTIMPLEMENTED();
   return ThreadPriority::NORMAL;
 #else
   // Mirrors SetCurrentThreadPriority()'s implementation.
   ThreadPriority platform_specific_priority;
   if (internal::GetCurrentThreadPriorityForPlatform(
           &platform_specific_priority)) {
     return platform_specific_priority;
   }
 
   // Need to clear errno before calling getpriority():
   // http://man7.org/linux/man-pages/man2/getpriority.2.html
   errno = 0;
   int nice_value = getpriority(PRIO_PROCESS, 0);
   if (errno != 0) {
     DVPLOG(1) << "Failed to get nice value of thread ("
               << PlatformThread::CurrentId() << ")";
     return ThreadPriority::NORMAL;
   }
 
   return internal::NiceValueToThreadPriority(nice_value);
 #endif  // !defined(OS_NACL)
 }
 
 #endif  // !defined(OS_MACOSX)
 
 }  // namespace base