1 /* 2 * Copyright (c) 2018, 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 #ifndef GTEST_UTILITIES_HELPER_INLINE_HPP 25 #define GTEST_UTILITIES_HELPER_INLINE_HPP 26 27 #include "runtime/mutex.hpp" 28 #include "runtime/semaphore.hpp" 29 #include "runtime/thread.hpp" 30 #include "runtime/vmThread.hpp" 31 #include "runtime/vm_operations.hpp" 32 #include "unittest.hpp" 33 34 class VM_StopSafepoint : public VM_Operation { 35 public: 36 Semaphore* _test_complete; 37 VM_StopSafepoint(Semaphore* wait_for) : _test_complete(wait_for) {} 38 VMOp_Type type() const { return VMOp_Dummy; } 39 Mode evaluation_mode() const { return _no_safepoint; } 40 bool is_cheap_allocated() const { return false; } 41 void doit() { _test_complete->wait(); } 42 }; 43 44 // This class and thread keep the non-safepoint op running while we do our testing. 45 class VMThreadBlocker : public JavaThread { 46 public: 47 Semaphore* _unblock; 48 Semaphore* _done; 49 VMThreadBlocker(Semaphore* ub, Semaphore* done) : _unblock(ub), _done(done) { 50 } 51 virtual ~VMThreadBlocker() {} 52 void run() { 53 this->set_thread_state(_thread_in_vm); 54 { 55 MutexLocker ml(Threads_lock); 56 Threads::add(this); 57 } 58 VM_StopSafepoint ss(_unblock); 59 VMThread::execute(&ss); 60 _done->signal(); 61 Threads::remove(this); 62 this->smr_delete(); 63 } 64 void doit() { 65 if (os::create_thread(this, os::os_thread)) { 66 os::start_thread(this); 67 } else { 68 ASSERT_TRUE(false); 69 } 70 } 71 }; 72 73 // For testing in a real JavaThread. 74 class JavaTestThread : public JavaThread { 75 public: 76 Semaphore* _post; 77 JavaTestThread(Semaphore* post) 78 : _post(post) { 79 } 80 virtual ~JavaTestThread() {} 81 82 void prerun() { 83 this->set_thread_state(_thread_in_vm); 84 { 85 MutexLocker ml(Threads_lock); 86 Threads::add(this); 87 } 88 { 89 MutexLockerEx ml(SR_lock(), Mutex::_no_safepoint_check_flag); 90 } 91 } 92 93 virtual void main_run() = 0; 94 95 void run() { 96 prerun(); 97 main_run(); 98 postrun(); 99 } 100 101 void postrun() { 102 Threads::remove(this); 103 _post->signal(); 104 this->smr_delete(); 105 } 106 107 void doit() { 108 if (os::create_thread(this, os::os_thread)) { 109 os::start_thread(this); 110 } else { 111 ASSERT_TRUE(false); 112 } 113 } 114 }; 115 116 template <typename FUNC> 117 class SingleTestThread : public JavaTestThread { 118 public: 119 FUNC& _f; 120 SingleTestThread(Semaphore* post, FUNC& f) 121 : JavaTestThread(post), _f(f) { 122 } 123 124 virtual ~SingleTestThread(){} 125 126 virtual void main_run() { 127 _f(this); 128 } 129 }; 130 131 template <typename TESTFUNC> 132 static void nomt_test_doer(TESTFUNC &f) { 133 Semaphore post, block_done, vmt_done; 134 VMThreadBlocker* blocker = new VMThreadBlocker(&block_done, &vmt_done); 135 blocker->doit(); 136 SingleTestThread<TESTFUNC>* stt = new SingleTestThread<TESTFUNC>(&post, f); 137 stt->doit(); 138 post.wait(); 139 block_done.signal(); 140 vmt_done.wait(); 141 } 142 143 template <typename RUNNER> 144 static void mt_test_doer() { 145 Semaphore post, block_done, vmt_done; 146 VMThreadBlocker* blocker = new VMThreadBlocker(&block_done, &vmt_done); 147 blocker->doit(); 148 RUNNER* runner = new RUNNER(&post); 149 runner->doit(); 150 post.wait(); 151 block_done.signal(); 152 vmt_done.wait(); 153 } 154 155 #endif // include guard