Fri, 31 Oct 2014 12:16:20 +0100
8062169: Multiple OSR compilations issued for same bci
Summary: Fixed 'SimpleThresholdPolicy::event' to always perform OSR if an OSR nmethod is available.
Reviewed-by: kvn, iveresov
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
25 #ifndef SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP
26 #define SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP
28 #include "gc_implementation/shared/gcUtil.hpp"
29 #include "runtime/os.hpp"
30 #include "utilities/top.hpp"
32 // Interface for thread local storage
34 // Fast variant of ThreadLocalStorage::get_thread_slow
35 extern "C" Thread* get_thread();
37 // Get raw thread id: e.g., %g7 on sparc, fs or gs on x86
38 extern "C" uintptr_t _raw_thread_id();
40 class ThreadLocalStorage : AllStatic {
41 public:
42 static void set_thread(Thread* thread);
43 static Thread* get_thread_slow();
44 static void invalidate_all() { pd_invalidate_all(); }
46 // Machine dependent stuff
47 #ifdef TARGET_OS_ARCH_linux_x86
48 # include "threadLS_linux_x86.hpp"
49 #endif
50 #ifdef TARGET_OS_ARCH_linux_sparc
51 # include "threadLS_linux_sparc.hpp"
52 #endif
53 #ifdef TARGET_OS_ARCH_linux_zero
54 # include "threadLS_linux_zero.hpp"
55 #endif
56 #ifdef TARGET_OS_ARCH_solaris_x86
57 # include "threadLS_solaris_x86.hpp"
58 #endif
59 #ifdef TARGET_OS_ARCH_solaris_sparc
60 # include "threadLS_solaris_sparc.hpp"
61 #endif
62 #ifdef TARGET_OS_ARCH_windows_x86
63 # include "threadLS_windows_x86.hpp"
64 #endif
65 #ifdef TARGET_OS_ARCH_linux_arm
66 # include "threadLS_linux_arm.hpp"
67 #endif
68 #ifdef TARGET_OS_ARCH_linux_ppc
69 # include "threadLS_linux_ppc.hpp"
70 #endif
71 #ifdef TARGET_OS_ARCH_aix_ppc
72 # include "threadLS_aix_ppc.hpp"
73 #endif
74 #ifdef TARGET_OS_ARCH_bsd_x86
75 # include "threadLS_bsd_x86.hpp"
76 #endif
77 #ifdef TARGET_OS_ARCH_bsd_zero
78 # include "threadLS_bsd_zero.hpp"
79 #endif
82 public:
83 // Accessor
84 static inline int thread_index() { return _thread_index; }
85 static inline void set_thread_index(int index) { _thread_index = index; }
87 // Initialization
88 // Called explicitly from VMThread::activate_system instead of init_globals.
89 static void init();
90 static bool is_initialized();
92 private:
93 static int _thread_index;
95 static void generate_code_for_get_thread();
97 // Processor dependent parts of set_thread and initialization
98 static void pd_set_thread(Thread* thread);
99 static void pd_init();
100 // Invalidate any thread cacheing or optimization schemes.
101 static void pd_invalidate_all();
103 };
105 #endif // SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP