1 // 2 // Copyright (c) 2007, 2010, 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. 22 // 23 24 25 #include "precompiled.hpp" 26 #include "compiler/abstractCompiler.hpp" 27 #include "runtime/mutexLocker.hpp" 28 void AbstractCompiler::initialize_runtimes(initializer f, volatile int* state) { 29 if (*state != initialized) { 30 31 // We are thread in native here... 32 CompilerThread* thread = CompilerThread::current(); 33 bool do_initialization = false; 34 { 35 ThreadInVMfromNative tv(thread); 36 MutexLocker only_one(CompileThread_lock, thread); 37 if ( *state == uninitialized) { 38 do_initialization = true; 39 *state = initializing; 40 } else { 41 while (*state == initializing ) { 42 CompileThread_lock->wait(); 43 } 44 } 45 } 46 if (do_initialization) { 47 // We can not hold any locks here since JVMTI events may call agents 48 49 // Compiler(s) run as native 50 51 (*f)(); 52 53 // To in_vm so we can use the lock 54 55 ThreadInVMfromNative tv(thread); 56 MutexLocker only_one(CompileThread_lock, thread); 57 assert(*state == initializing, "wrong state"); 58 *state = initialized; 59 CompileThread_lock->notify_all(); 60 } 61 } 62 }