1 /*
2 * Copyright (c) 2011, 2015, 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 #include "precompiled.hpp"
25 #include "memory/oopFactory.hpp"
26 #include "oops/oop.inline.hpp"
27 #include "runtime/javaCalls.hpp"
28 #include "runtime/handles.hpp"
29 #include "jvmci/jvmciJavaClasses.hpp"
30 #include "jvmci/jvmciCompiler.hpp"
31 #include "jvmci/jvmciEnv.hpp"
32 #include "jvmci/jvmciRuntime.hpp"
33 #include "runtime/compilationPolicy.hpp"
34 #include "runtime/globals_extension.hpp"
35
36 JVMCICompiler* JVMCICompiler::_instance = NULL;
37 elapsedTimer JVMCICompiler::_codeInstallTimer;
38
39 JVMCICompiler::JVMCICompiler() : AbstractCompiler(jvmci) {
40 _bootstrapping = false;
41 _methodsCompiled = 0;
42 assert(_instance == NULL, "only one instance allowed");
43 _instance = this;
44 }
45
46 // Initialization
47 void JVMCICompiler::initialize() {
48 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
49 return;
50 }
51
52 set_state(initialized);
53
54 // JVMCI is considered as application code so we need to
55 // stop the VM deferring compilation now.
56 CompilationPolicy::completed_vm_startup();
57 }
58
59 void JVMCICompiler::bootstrap() {
60 if (Arguments::mode() == Arguments::_int) {
61 // Nothing to do in -Xint mode
62 return;
63 }
64 #ifndef PRODUCT
65 // We turn off CompileTheWorld so that compilation requests are not
66 // ignored during bootstrap or that JVMCI can be compiled by C1/C2.
67 FlagSetting ctwOff(CompileTheWorld, false);
68 #endif
69
70 JavaThread* THREAD = JavaThread::current();
71 _bootstrapping = true;
72 ResourceMark rm;
73 HandleMark hm;
74 if (PrintBootstrap) {
75 tty->print("Bootstrapping JVMCI");
76 }
77 jlong start = os::javaTimeMillis();
78
79 Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
80 // Initialize compile queue with a selected set of methods.
81 int len = objectMethods->length();
82 for (int i = 0; i < len; i++) {
83 methodHandle mh = objectMethods->at(i);
84 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
85 ResourceMark rm;
86 int hot_count = 10; // TODO: what's the appropriate value?
87 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, "bootstrap", THREAD);
88 }
89 }
90
91 int qsize;
92 bool first_round = true;
93 int z = 0;
94 do {
95 // Loop until there is something in the queue.
96 do {
97 os::sleep(THREAD, 100, true);
98 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
99 } while (first_round && qsize == 0);
100 first_round = false;
101 if (PrintBootstrap) {
102 while (z < (_methodsCompiled / 100)) {
103 ++z;
104 tty->print_raw(".");
105 }
106 }
107 } while (qsize != 0);
108
109 if (PrintBootstrap) {
110 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methodsCompiled);
111 }
112 _bootstrapping = false;
113 }
114
115 void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) {
116 JVMCI_EXCEPTION_CONTEXT
117
118 bool is_osr = entry_bci != InvocationEntryBci;
119 if (_bootstrapping && is_osr) {
120 // no OSR compilations during bootstrap - the compiler is just too slow at this point,
121 // and we know that there are no endless loops
122 return;
123 }
124
125 JVMCIRuntime::initialize_well_known_classes(CHECK_ABORT);
126
127 HandleMark hm;
128 ResourceMark rm;
129 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_ABORT);
130
131 JavaValue method_result(T_OBJECT);
132 JavaCallArguments args;
133 args.push_long((jlong) (address) method());
134 JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(),
135 vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD);
136
137 if (!HAS_PENDING_EXCEPTION) {
138 JavaValue result(T_VOID);
139 JavaCallArguments args;
140 args.push_oop(receiver);
141 args.push_oop((oop)method_result.get_jobject());
142 args.push_int(entry_bci);
143 args.push_long((jlong) (address) env);
144 args.push_int(env->task()->compile_id());
145 JavaCalls::call_special(&result, receiver->klass(),
146 vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD);
147 }
148
149 // An uncaught exception was thrown during compilation. Generally these
150 // should be handled by the Java code in some useful way but if they leak
151 // through to here report them instead of dying or silently ignoring them.
152 if (HAS_PENDING_EXCEPTION) {
153 Handle throwable = PENDING_EXCEPTION;
154 CLEAR_PENDING_EXCEPTION;
155
156 JVMCIRuntime::call_printStackTrace(throwable, THREAD);
157 if (HAS_PENDING_EXCEPTION) {
158 CLEAR_PENDING_EXCEPTION;
159 }
160
161 // Something went wrong so disable compilation at this level
162 method->set_not_compilable(CompLevel_full_optimization);
163 } else {
164 _methodsCompiled++;
165 }
166 }
167
168
169 // Compilation entry point for methods
170 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
171 ShouldNotReachHere();
172 }
173
174 bool JVMCICompiler::is_trivial(Method* method) {
175 if (_bootstrapping) {
176 return false;
177 }
178 return JVMCIRuntime::treat_as_trivial(method);
179 }
180
181 // Print compilation timers and statistics
182 void JVMCICompiler::print_timers() {
183 print_compilation_timers();
184 }
185
186 // Print compilation timers and statistics
187 void JVMCICompiler::print_compilation_timers() {
188 TRACE_jvmci_1("JVMCICompiler::print_timers");
189 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
190 }