1 /* 2 * Copyright (c) 2016, 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 "code/dependencyContext.hpp" 27 #include "unittest.hpp" 28 29 class TestDependencyContext { 30 public: 31 nmethod* _nmethods[3]; 32 33 intptr_t _dependency_context; 34 35 DependencyContext dependencies() { 36 DependencyContext depContext(&_dependency_context); 37 return depContext; 38 } 39 40 TestDependencyContext() : _dependency_context(DependencyContext::EMPTY) { 41 CodeCache_lock->lock_without_safepoint_check(); 42 43 _nmethods[0] = reinterpret_cast<nmethod*>(0x8 * 0); 44 _nmethods[1] = reinterpret_cast<nmethod*>(0x8 * 1); 45 _nmethods[2] = reinterpret_cast<nmethod*>(0x8 * 2); 46 47 dependencies().add_dependent_nmethod(_nmethods[2]); 48 dependencies().add_dependent_nmethod(_nmethods[1]); 49 dependencies().add_dependent_nmethod(_nmethods[0]); 50 } 51 52 ~TestDependencyContext() { 53 dependencies().wipe(); 54 CodeCache_lock->unlock(); 55 } 56 57 static bool has_stale_entries(DependencyContext ctx) { 58 return ctx.has_stale_entries(); 59 } 60 61 #ifndef PRODUCT 62 static bool find_stale_entries(DependencyContext ctx) { 63 return ctx.find_stale_entries(); 64 } 65 #endif 66 }; 67 68 static void test_remove_dependent_nmethod(int id, bool delete_immediately) { 69 TestDependencyContext c; 70 DependencyContext depContext = c.dependencies(); 71 NOT_PRODUCT(ASSERT_FALSE(TestDependencyContext::find_stale_entries(depContext))); 72 ASSERT_FALSE(TestDependencyContext::has_stale_entries(depContext)); 73 74 nmethod* nm = c._nmethods[id]; 75 depContext.remove_dependent_nmethod(nm, delete_immediately); 76 77 if (!delete_immediately) { 78 NOT_PRODUCT(ASSERT_TRUE(TestDependencyContext::find_stale_entries(depContext))); 79 ASSERT_TRUE(TestDependencyContext::has_stale_entries(depContext)); 80 NOT_PRODUCT(ASSERT_TRUE(depContext.is_dependent_nmethod(nm))); 81 depContext.expunge_stale_entries(); 82 } 83 84 NOT_PRODUCT(ASSERT_FALSE(TestDependencyContext::find_stale_entries(depContext))); 85 ASSERT_FALSE(TestDependencyContext::has_stale_entries(depContext)); 86 NOT_PRODUCT(ASSERT_FALSE(depContext.is_dependent_nmethod(nm))); 87 } 88 89 TEST_VM(code, dependency_context) { 90 test_remove_dependent_nmethod(0, false); 91 test_remove_dependent_nmethod(1, false); 92 test_remove_dependent_nmethod(2, false); 93 94 test_remove_dependent_nmethod(0, true); 95 test_remove_dependent_nmethod(1, true); 96 test_remove_dependent_nmethod(2, true); 97 }