1 /* 2 * Copyright (c) 2016, 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 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 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 void wipe() { 68 DependencyContext ctx(&_dependency_context); 69 nmethodBucket* b = ctx.dependencies(); 70 ctx.set_dependencies(NULL); 71 ctx.set_has_stale_entries(false); 72 while (b != NULL) { 73 nmethodBucket* next = b->next(); 74 delete b; 75 b = next; 76 } 77 } 78 }; 79 80 static void test_remove_dependent_nmethod(int id, bool delete_immediately) { 81 TestDependencyContext c; 82 DependencyContext depContext = c.dependencies(); 83 NOT_PRODUCT(ASSERT_FALSE(TestDependencyContext::find_stale_entries(depContext))); 84 ASSERT_FALSE(TestDependencyContext::has_stale_entries(depContext)); 85 86 nmethod* nm = c._nmethods[id]; 87 depContext.remove_dependent_nmethod(nm, delete_immediately); 88 89 if (!delete_immediately) { 90 NOT_PRODUCT(ASSERT_TRUE(TestDependencyContext::find_stale_entries(depContext))); 91 ASSERT_TRUE(TestDependencyContext::has_stale_entries(depContext)); 92 NOT_PRODUCT(ASSERT_TRUE(depContext.is_dependent_nmethod(nm))); 93 depContext.expunge_stale_entries(); 94 } 95 96 NOT_PRODUCT(ASSERT_FALSE(TestDependencyContext::find_stale_entries(depContext))); 97 ASSERT_FALSE(TestDependencyContext::has_stale_entries(depContext)); 98 NOT_PRODUCT(ASSERT_FALSE(depContext.is_dependent_nmethod(nm))); 99 } 100 101 TEST_VM(code, dependency_context) { 102 test_remove_dependent_nmethod(0, false); 103 test_remove_dependent_nmethod(1, false); 104 test_remove_dependent_nmethod(2, false); 105 106 test_remove_dependent_nmethod(0, true); 107 test_remove_dependent_nmethod(1, true); 108 test_remove_dependent_nmethod(2, true); 109 }