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7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11

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Add CriticalPriority == MaxPriority+1 and enable scheduling class as well as thread priority to change on Solaris.

Reviewed-by: dholmes, dcubed
This commit is contained in:
Paul Hohensee 2012-01-26 20:06:06 -05:00
parent 7ece654913
commit 09e21afaaa
9 changed files with 289 additions and 140 deletions
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7
hotspot/src/share/vm/runtime/os.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -73,8 +73,9 @@ enum ThreadPriority { // JLS 20.20.1-3
MinPriority = 1, // Minimum priority
NormPriority = 5, // Normal (non-daemon) priority
NearMaxPriority = 9, // High priority, used for VMThread
MaxPriority = 10 // Highest priority, used for WatcherThread
MaxPriority = 10, // Highest priority, used for WatcherThread
// ensures that VMThread doesn't starve profiler
CriticalPriority = 11 // Critical thread priority
};
// Typedef for structured exception handling support
@ -733,7 +734,7 @@ class os: AllStatic {
// Thread priority helpers (implemented in OS-specific part)
static OSReturn set_native_priority(Thread* thread, int native_prio);
static OSReturn get_native_priority(const Thread* const thread, int* priority_ptr);
static int java_to_os_priority[MaxPriority + 1];
static int java_to_os_priority[CriticalPriority + 1];
// Hint to the underlying OS that a task switch would not be good.
// Void return because it's a hint and can fail.
static void hint_no_preempt();