1 /*
2 * Copyright (c) 2011, 2021, 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 "classfile/vmClasses.hpp"
26 #include "compiler/compileBroker.hpp"
27 #include "classfile/moduleEntry.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "jvmci/jvmciEnv.hpp"
30 #include "jvmci/jvmciRuntime.hpp"
31 #include "oops/objArrayOop.inline.hpp"
32 #include "runtime/arguments.hpp"
33 #include "runtime/handles.inline.hpp"
34
35 JVMCICompiler* JVMCICompiler::_instance = NULL;
36 elapsedTimer JVMCICompiler::_codeInstallTimer;
37 elapsedTimer JVMCICompiler::_hostedCodeInstallTimer;
38
39 JVMCICompiler::JVMCICompiler() : AbstractCompiler(compiler_jvmci) {
40 _bootstrapping = false;
41 _bootstrap_compilation_request_handled = false;
42 _methods_compiled = 0;
43 _global_compilation_ticks = 0;
44 assert(_instance == NULL, "only one instance allowed");
45 _instance = this;
46 }
47
48 JVMCICompiler* JVMCICompiler::instance(bool require_non_null, TRAPS) {
49 if (!EnableJVMCI) {
50 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
51 }
52 if (_instance == NULL && require_non_null) {
53 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "The JVMCI compiler instance has not been created");
54 }
55 return _instance;
56 }
57
58 // Initialization
59 void JVMCICompiler::initialize() {
60 assert(!CompilerConfig::is_c1_or_interpreter_only_no_jvmci(), "JVMCI is launched, it's not c1/interpreter only mode");
61 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
62 return;
63 }
64
65 set_state(initialized);
66 }
67
68 void JVMCICompiler::bootstrap(TRAPS) {
69 if (Arguments::mode() == Arguments::_int) {
70 // Nothing to do in -Xint mode
71 return;
72 }
73 _bootstrapping = true;
74 ResourceMark rm(THREAD);
75 HandleMark hm(THREAD);
76 if (PrintBootstrap) {
77 tty->print("Bootstrapping JVMCI");
78 }
79 jlong start = os::javaTimeNanos();
80
81 Array<Method*>* objectMethods = vmClasses::Object_klass()->methods();
82 // Initialize compile queue with a selected set of methods.
83 int len = objectMethods->length();
84 for (int i = 0; i < len; i++) {
85 methodHandle mh(THREAD, objectMethods->at(i));
86 if (!mh->is_native() &&
87 !mh->is_static() &&
88 !mh->is_object_constructor() &&
89 !mh->is_class_initializer()) {
90 ResourceMark rm;
91 int hot_count = 10; // TODO: what's the appropriate value?
92 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, CHECK);
93 }
94 }
95
96 int qsize;
97 bool first_round = true;
98 int z = 0;
99 do {
100 // Loop until there is something in the queue.
101 do {
102 THREAD->sleep(100);
103 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
104 } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
105 first_round = false;
106 if (PrintBootstrap) {
107 while (z < (_methods_compiled / 100)) {
108 ++z;
109 tty->print_raw(".");
110 }
111 }
112 } while (qsize != 0);
113
114 if (PrintBootstrap) {
115 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)",
116 (jlong)nanos_to_millis(os::javaTimeNanos() - start), _methods_compiled);
117 }
118 _bootstrapping = false;
119 JVMCI::java_runtime()->bootstrap_finished(CHECK);
120 }
121
122 bool JVMCICompiler::force_comp_at_level_simple(const methodHandle& method) {
123 if (_bootstrapping) {
124 // When bootstrapping, the JVMCI compiler can compile its own methods.
125 return false;
126 }
127 if (UseJVMCINativeLibrary) {
128 // This mechanism exists to force compilation of a JVMCI compiler by C1
129 // to reduce the compilation time spent on the JVMCI compiler itself. In
130 // +UseJVMCINativeLibrary mode, the JVMCI compiler is AOT compiled.
131 return false;
132 } else {
133 JVMCIRuntime* runtime = JVMCI::java_runtime();
134 if (runtime != NULL) {
135 JVMCIObject receiver = runtime->probe_HotSpotJVMCIRuntime();
136 if (receiver.is_null()) {
137 return false;
138 }
139 JVMCIEnv* ignored_env = NULL;
140 objArrayHandle excludeModules(JavaThread::current(), HotSpotJVMCI::HotSpotJVMCIRuntime::excludeFromJVMCICompilation(ignored_env, HotSpotJVMCI::resolve(receiver)));
141 if (excludeModules.not_null()) {
142 ModuleEntry* moduleEntry = method->method_holder()->module();
143 for (int i = 0; i < excludeModules->length(); i++) {
144 if (excludeModules->obj_at(i) == moduleEntry->module()) {
145 return true;
146 }
147 }
148 }
149 }
150 return false;
151 }
152 }
153
154 // Compilation entry point for methods
155 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive) {
156 ShouldNotReachHere();
157 }
158
159 // Print CompileBroker compilation timers
160 void JVMCICompiler::print_timers() {
161 double code_install_time = _codeInstallTimer.seconds();
162 tty->print_cr(" JVMCI CompileBroker Time:");
163 tty->print_cr(" Compile: %7.3f s", stats()->total_time());
164 tty->print_cr(" Install Code: %7.3f s", code_install_time);
165 }
166
167 // Print non-CompileBroker compilation timers
168 void JVMCICompiler::print_hosted_timers() {
169 double code_install_time = _hostedCodeInstallTimer.seconds();
170 tty->print_cr(" JVMCI Hosted Time:");
171 tty->print_cr(" Install Code: %7.3f s", code_install_time);
172 }
173
174 void JVMCICompiler::inc_methods_compiled() {
175 Atomic::inc(&_methods_compiled);
176 Atomic::inc(&_global_compilation_ticks);
177 }
178
179 void JVMCICompiler::inc_global_compilation_ticks() {
180 Atomic::inc(&_global_compilation_ticks);
181 }