Mercurial > hg > graal-compiler

annotate src/share/vm/compiler/abstractCompiler.cpp @ 13364:5a4293f24642

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added -G:PrintCompRate option for periodically printing out the current compilation rate
author Doug Simon <doug.simon@oracle.com>
date Tue, 17 Dec 2013 16:45:02 +0100
parents 469216acdb28
children de6a9e811145
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1 //
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2 // Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 //
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5 // This code is free software; you can redistribute it and/or modify it
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6 // under the terms of the GNU General Public License version 2 only, as
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7 // published by the Free Software Foundation.
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8 //
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9 // This code is distributed in the hope that it will be useful, but WITHOUT
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10 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 // version 2 for more details (a copy is included in the LICENSE file that
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13 // accompanied this code).
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14 //
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15 // You should have received a copy of the GNU General Public License version
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16 // 2 along with this work; if not, write to the Free Software Foundation,
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17 // Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 //
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19 // Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 // or visit www.oracle.com if you need additional information or have any
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21 // questions.
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22 //
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23
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24
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25 #include "precompiled.hpp"
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26 #include "compiler/abstractCompiler.hpp"
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27 #include "compiler/compileBroker.hpp"
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28 #include "runtime/mutexLocker.hpp"
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29
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30 bool AbstractCompiler::should_perform_init() {
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31 if (_compiler_state != initialized) {
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32 MutexLocker only_one(CompileThread_lock);
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33
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34 if (_compiler_state == uninitialized) {
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35 _compiler_state = initializing;
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36 return true;
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37 } else {
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38 while (_compiler_state == initializing) {
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39 CompileThread_lock->wait();
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40 }
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41 }
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42 }
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43 return false;
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44 }
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45
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46 bool AbstractCompiler::should_perform_shutdown() {
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47 // Since this method can be called by multiple threads, the lock ensures atomicity of
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48 // decrementing '_num_compiler_threads' and the following operations.
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49 MutexLocker only_one(CompileThread_lock);
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50 _num_compiler_threads--;
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51 assert (CompileBroker::is_compilation_disabled_forever(), "Must be set, otherwise thread waits forever");
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52
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53 // Only the last thread will perform shutdown operations
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54 if (_num_compiler_threads == 0) {
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55 return true;
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56 }
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57 return false;
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58 }
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59
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60 void AbstractCompiler::set_state(int state) {
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61 // Ensure that ste is only set by one thread at a time
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62 MutexLocker only_one(CompileThread_lock);
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63 _compiler_state = state;
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64 CompileThread_lock->notify_all();
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65 }