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 if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
46 return;
47 }
48
49 set_state(initialized);
50 }
51
52 void JVMCICompiler::bootstrap(TRAPS) {
53 assert(THREAD->is_Java_thread(), "must be");
54 if (Arguments::mode() == Arguments::_int) {
55 // Nothing to do in -Xint mode
56 return;
57 }
58 _bootstrapping = true;
59 ResourceMark rm;
60 HandleMark hm;
61 if (PrintBootstrap) {
62 tty->print("Bootstrapping JVMCI");
63 }
64 jlong start = os::javaTimeNanos();
65
66 Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
67 // Initialize compile queue with a selected set of methods.
68 int len = objectMethods->length();
69 for (int i = 0; i < len; i++) {
70 methodHandle mh(THREAD, objectMethods->at(i));
71 if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
72 ResourceMark rm;
73 int hot_count = 10; // TODO: what's the appropriate value?
74 CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
75 }
76 }
77
78 int qsize;
79 bool first_round = true;
80 int z = 0;
81 do {
82 // Loop until there is something in the queue.
83 do {
84 ((JavaThread*)THREAD)->sleep(100);
85 qsize = CompileBroker::queue_size(CompLevel_full_optimization);
86 } while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
87 first_round = false;
88 if (PrintBootstrap) {
89 while (z < (_methods_compiled / 100)) {
90 ++z;
91 tty->print_raw(".");
92 }
93 }
94 } while (qsize != 0);
95
96 if (PrintBootstrap) {
97 tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)",
98 nanos_to_millis(os::javaTimeNanos() - start), _methods_compiled);
99 }
100 _bootstrapping = false;
101 JVMCI::compiler_runtime()->bootstrap_finished(CHECK);
102 }
103
104 bool JVMCICompiler::force_comp_at_level_simple(const methodHandle& method) {
105 if (UseJVMCINativeLibrary) {
106 // This mechanism exists to force compilation of a JVMCI compiler by C1
107 // to reduces the compilation time spent on the JVMCI compiler itself. In
108 // +UseJVMCINativeLibrary mode, the JVMCI compiler is AOT compiled.
109 return false;
110 }
111
112 if (_bootstrapping) {
113 // When bootstrapping, the JVMCI compiler can compile its own methods.
114 return false;
115 }
116
117 JVMCIRuntime* runtime = JVMCI::compiler_runtime();
118 if (runtime != NULL && runtime->is_HotSpotJVMCIRuntime_initialized()) {
119 JavaThread* thread = JavaThread::current();
120 HandleMark hm(thread);
121 THREAD_JVMCIENV(thread);
122 JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(JVMCIENV);
123 objArrayHandle excludeModules(thread, HotSpotJVMCI::HotSpotJVMCIRuntime::excludeFromJVMCICompilation(JVMCIENV, HotSpotJVMCI::resolve(receiver)));
124 if (excludeModules.not_null()) {
125 ModuleEntry* moduleEntry = method->method_holder()->module();
126 for (int i = 0; i < excludeModules->length(); i++) {
127 if (excludeModules->obj_at(i) == moduleEntry->module()) {
128 return true;
129 }
130 }
131 }
132 }
133 return false;
134 }
135
136 // Compilation entry point for methods
137 void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
138 ShouldNotReachHere();
139 }
140
141 // Print compilation timers and statistics
142 void JVMCICompiler::print_timers() {
143 print_compilation_timers();
144 }
145
146 // Print compilation timers and statistics
147 void JVMCICompiler::print_compilation_timers() {
148 TRACE_jvmci_1("JVMCICompiler::print_timers");
149 tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
150 }