1 /* 2 * Copyright (c) 2006, 2017, 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 #ifndef SHARE_VM_PRIMS_JVMTITHREADSTATE_INLINE_HPP 26 #define SHARE_VM_PRIMS_JVMTITHREADSTATE_INLINE_HPP 27 28 #include "prims/jvmtiEnvThreadState.hpp" 29 #include "prims/jvmtiThreadState.hpp" 30 #include "runtime/thread.inline.hpp" 31 32 // JvmtiEnvThreadStateIterator implementation 33 34 inline JvmtiEnvThreadStateIterator::JvmtiEnvThreadStateIterator(JvmtiThreadState* thread_state) { 35 state = thread_state; 36 Thread::current()->entering_jvmti_env_iteration(); 37 } 38 39 inline JvmtiEnvThreadStateIterator::~JvmtiEnvThreadStateIterator() { 40 Thread::current()->leaving_jvmti_env_iteration(); 41 } 42 43 inline JvmtiEnvThreadState* JvmtiEnvThreadStateIterator::first() { 44 return state->head_env_thread_state(); 45 } 46 47 inline JvmtiEnvThreadState* JvmtiEnvThreadStateIterator::next(JvmtiEnvThreadState* ets) { 48 return ets->next(); 49 } 50 51 // JvmtiThreadState implementation 52 53 JvmtiEnvThreadState* JvmtiThreadState::env_thread_state(JvmtiEnvBase *env) { 54 JvmtiEnvThreadStateIterator it(this); 55 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { 56 if ((JvmtiEnvBase*)(ets->get_env()) == env) { 57 return ets; 58 } 59 } 60 return NULL; 61 } 62 63 JvmtiEnvThreadState* JvmtiThreadState::head_env_thread_state() { 64 return _head_env_thread_state; 65 } 66 67 void JvmtiThreadState::set_head_env_thread_state(JvmtiEnvThreadState* ets) { 68 _head_env_thread_state = ets; 69 } 70 71 inline JvmtiThreadState* JvmtiThreadState::state_for_while_locked(JavaThread *thread) { 72 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); 73 74 JvmtiThreadState *state = thread->jvmti_thread_state(); 75 if (state == NULL) { 76 if (thread->is_exiting()) { 77 // don't add a JvmtiThreadState to a thread that is exiting 78 return NULL; 79 } 80 81 state = new JvmtiThreadState(thread); 82 } 83 return state; 84 } 85 86 inline JvmtiThreadState* JvmtiThreadState::state_for(JavaThread *thread) { 87 JvmtiThreadState *state = thread->jvmti_thread_state(); 88 if (state == NULL) { 89 MutexLocker mu(JvmtiThreadState_lock); 90 // check again with the lock held 91 state = state_for_while_locked(thread); 92 } else { 93 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); 94 } 95 return state; 96 } 97 98 #endif // SHARE_VM_PRIMS_JVMTITHREADSTATE_INLINE_HPP