1 /*
2 * Copyright (c) 2011, 2020, 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 "compiler/compileBroker.hpp"
26 #include "classfile/moduleEntry.hpp"
27 #include "jvmci/jvmciEnv.hpp"
28 #include "jvmci/jvmciRuntime.hpp"
29 #include "oops/objArrayOop.inline.hpp"
30 #include "runtime/handles.inline.hpp"
31
32 JVMCICompiler* JVMCICompiler::_instance = NULL;
33 elapsedTimer JVMCICompiler::_codeInstallTimer;
34
35 JVMCICompiler::JVMCICompiler() : AbstractCompiler(compiler_jvmci) {
36 _bootstrapping = false;
37 _bootstrap_compilation_request_handled = false;
38 _methods_compiled = 0;
39 assert(_instance == NULL, "only one instance allowed");
40 _instance = this;
41 }
42
43 // Initialization
44 void JVMCICompiler::initialize() {
45 assert(!is_c1_or_interpreter_only(), "JVMCI is launched, it's not c1/interpreter only mode");
46 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
47 return;
48 }
49
50 set_state(initialized);
51 }
52
53 void JVMCICompiler::bootstrap(TRAPS) {
54 assert(THREAD->is_Java_thread(), "must be");
55 if (Arguments::mode() == Arguments::_int) {
56 // Nothing to do in -Xint mode
57 return;
58 }
59 _bootstrapping = true;
60 ResourceMark rm;
61 HandleMark hm;
62 if (PrintBootstrap) {
63 tty->print("Bootstrapping JVMCI");
64 }
65 jlong start = os::javaTimeNanos();
66
67 Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
68 // Initialize compile queue with a selected set of methods.
69 int len = objectMethods->length();
70 for (int i = 0; i < len; i++) {
71 methodHandle mh(THREAD, objectMethods->at(i));
72 if (!mh->is_native() &&
73 !mh->is_static() &&
74 !mh->is_object_constructor() &&
75 !mh->is_class_initializer()) {
76 ResourceMark rm;
77 int hot_count = 10; // TODO: what's the appropriate value?
78 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
79 }
80 }
81
82 int qsize;
83 bool first_round = true;
84 int z = 0;
85 do {
86 // Loop until there is something in the queue.
87 do {
88 ((JavaThread*)THREAD)->sleep(100);
89 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
90 } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
91 first_round = false;
92 if (PrintBootstrap) {
93 while (z < (_methods_compiled / 100)) {
94 ++z;
95 tty->print_raw(".");
96 }
97 }
98 } while (qsize != 0);
99
100 if (PrintBootstrap) {
101 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)",
102 (jlong)nanos_to_millis(os::javaTimeNanos() - start), _methods_compiled);
103 }
104 _bootstrapping = false;
105 JVMCI::java_runtime()->bootstrap_finished(CHECK);
106 }
107
108 bool JVMCICompiler::force_comp_at_level_simple(const methodHandle& method) {
109 if (_bootstrapping) {
110 // When bootstrapping, the JVMCI compiler can compile its own methods.
111 return false;
112 }
113 if (UseJVMCINativeLibrary) {
114 // This mechanism exists to force compilation of a JVMCI compiler by C1
115 // to reduce the compilation time spent on the JVMCI compiler itself. In
116 // +UseJVMCINativeLibrary mode, the JVMCI compiler is AOT compiled.
117 return false;
118 } else {
119 JVMCIRuntime* runtime = JVMCI::java_runtime();
120 if (runtime != NULL) {
121 JVMCIObject receiver = runtime->probe_HotSpotJVMCIRuntime();
122 if (receiver.is_null()) {
123 return false;
124 }
125 JVMCIEnv* ignored_env = NULL;
126 objArrayHandle excludeModules(JavaThread::current(), HotSpotJVMCI::HotSpotJVMCIRuntime::excludeFromJVMCICompilation(ignored_env, HotSpotJVMCI::resolve(receiver)));
127 if (excludeModules.not_null()) {
128 ModuleEntry* moduleEntry = method->method_holder()->module();
129 for (int i = 0; i < excludeModules->length(); i++) {
130 if (excludeModules->obj_at(i) == moduleEntry->module()) {
131 return true;
132 }
133 }
134 }
135 }
136 return false;
137 }
138 }
139
140 // Compilation entry point for methods
141 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive) {
142 ShouldNotReachHere();
143 }
144
145 // Print compilation timers and statistics
146 void JVMCICompiler::print_timers() {
147 print_compilation_timers();
148 }
149
150 // Print compilation timers and statistics
151 void JVMCICompiler::print_compilation_timers() {
152 JVMCI_event_1("JVMCICompiler::print_timers");
153 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
154 }