1 /*
2 * Copyright (c) 2011, 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 #ifndef PRODUCT
61 // We turn off CompileTheWorld so that compilation requests are not
62 // ignored during bootstrap or that JVMCI can be compiled by C1/C2.
63 FlagSetting ctwOff(CompileTheWorld, false);
64 #endif
65
66 JavaThread* THREAD = JavaThread::current();
67 _bootstrapping = true;
68 ResourceMark rm;
69 HandleMark hm;
70 if (PrintBootstrap) {
71 tty->print("Bootstrapping JVMCI");
72 }
73 jlong start = os::javaTimeMillis();
74
75 Array<Method*>* objectMethods = InstanceKlass::cast(SystemDictionary::Object_klass())->methods();
76 // Initialize compile queue with a selected set of methods.
77 int len = objectMethods->length();
78 for (int i = 0; i < len; i++) {
79 methodHandle mh = objectMethods->at(i);
80 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
81 ResourceMark rm;
82 int hot_count = 10; // TODO: what's the appropriate value?
83 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, "bootstrap", THREAD);
84 }
85 }
86
87 int qsize;
88 bool first_round = true;
89 int z = 0;
90 do {
91 // Loop until there is something in the queue.
92 do {
93 os::sleep(THREAD, 100, true);
94 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
95 } while (first_round && qsize == 0);
96 first_round = false;
97 if (PrintBootstrap) {
98 while (z < (_methodsCompiled / 100)) {
99 ++z;
100 tty->print_raw(".");
101 }
102 }
103 } while (qsize != 0);
104
105 if (PrintBootstrap) {
106 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methodsCompiled);
107 }
108 _bootstrapping = false;
109 }
110
111 void JVMCICompiler::compile_method(methodHandle method, int entry_bci, JVMCIEnv* env) {
112 JVMCI_EXCEPTION_CONTEXT
113
114 bool is_osr = entry_bci != InvocationEntryBci;
115 if (_bootstrapping && is_osr) {
116 // no OSR compilations during bootstrap - the compiler is just too slow at this point,
117 // and we know that there are no endless loops
118 return;
119 }
120
121 JVMCIRuntime::initialize_well_known_classes(CHECK_ABORT);
122
123 HandleMark hm;
124 ResourceMark rm;
125 Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_ABORT);
126
127 JavaValue method_result(T_OBJECT);
128 {
129 JavaCallArguments args;
130 args.push_long((jlong) (address) method());
131 JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(), vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, CHECK_ABORT);
132 }
133
134 JavaValue result(T_VOID);
135 JavaCallArguments args;
136 args.push_oop(receiver);
137 args.push_oop((oop)method_result.get_jobject());
138 args.push_int(entry_bci);
139 args.push_long((jlong) (address) env);
140 args.push_int(env->task()->compile_id());
141 JavaCalls::call_special(&result, receiver->klass(), vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, CHECK_ABORT);
142
143 _methodsCompiled++;
144 }
145
146
147 // Compilation entry point for methods
148 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
149 ShouldNotReachHere();
150 }
151
152 // Print compilation timers and statistics
153 void JVMCICompiler::print_timers() {
154 print_compilation_timers();
155 }
156
157 // Print compilation timers and statistics
158 void JVMCICompiler::print_compilation_timers() {
159 TRACE_jvmci_1("JVMCICompiler::print_timers");
160 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
161 }