1 /* 2 * Copyright (c) 1997, 2008, 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 "incls/_precompiled.incl" 26 # include "incls/_gcLocker.cpp.incl" 27 28 volatile jint GC_locker::_jni_lock_count = 0; 29 volatile jint GC_locker::_lock_count = 0; 30 volatile bool GC_locker::_needs_gc = false; 31 volatile bool GC_locker::_doing_gc = false; 32 33 void GC_locker::stall_until_clear() { 34 assert(!JavaThread::current()->in_critical(), "Would deadlock"); 35 if (PrintJNIGCStalls && PrintGCDetails) { 36 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8 37 gclog_or_tty->print_cr( 38 "Allocation failed. Thread \"%s\" is stalled by JNI critical section.", 39 JavaThread::current()->name()); 40 } 41 MutexLocker ml(JNICritical_lock); 42 // Wait for _needs_gc to be cleared 43 while (GC_locker::needs_gc()) { 44 JNICritical_lock->wait(); 45 } 46 } | 1 /* 2 * Copyright (c) 1997, 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 "memory/gcLocker.inline.hpp" 27 #include "memory/resourceArea.hpp" 28 #include "memory/sharedHeap.hpp" 29 30 volatile jint GC_locker::_jni_lock_count = 0; 31 volatile jint GC_locker::_lock_count = 0; 32 volatile bool GC_locker::_needs_gc = false; 33 volatile bool GC_locker::_doing_gc = false; 34 35 void GC_locker::stall_until_clear() { 36 assert(!JavaThread::current()->in_critical(), "Would deadlock"); 37 if (PrintJNIGCStalls && PrintGCDetails) { 38 ResourceMark rm; // JavaThread::name() allocates to convert to UTF8 39 gclog_or_tty->print_cr( 40 "Allocation failed. Thread \"%s\" is stalled by JNI critical section.", 41 JavaThread::current()->name()); 42 } 43 MutexLocker ml(JNICritical_lock); 44 // Wait for _needs_gc to be cleared 45 while (GC_locker::needs_gc()) { 46 JNICritical_lock->wait(); 47 } 48 } |