1 /*
2 * Copyright (c) 1998, 2024, 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,
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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
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23 */
24
25 #ifndef SHARE_COMPILER_COMPILETASK_HPP
26 #define SHARE_COMPILER_COMPILETASK_HPP
27
28 #include "ci/ciMethod.hpp"
29 #include "code/nmethod.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "memory/allocation.hpp"
32 #include "utilities/xmlstream.hpp"
33
34 class CompileQueue;
35 class CompileTrainingData;
36 class DirectiveSet;
37 class SCCEntry;
38
39 JVMCI_ONLY(class JVMCICompileState;)
40
41 enum class InliningResult { SUCCESS, FAILURE };
42
43 inline InliningResult inlining_result_of(bool success) {
44 return success ? InliningResult::SUCCESS : InliningResult::FAILURE;
45 }
46
47 // CompileTask
48 //
49 // An entry in the compile queue. It represents a pending or current
50 // compilation.
51
52 class CompileTask : public CHeapObj<mtCompiler> {
53 friend class VMStructs;
54 friend class JVMCIVMStructs;
55
56 public:
57 // Different reasons for a compilation
58 // The order is important - mapped to reason_names[]
59 enum CompileReason {
60 Reason_None,
61 Reason_InvocationCount, // Simple/StackWalk-policy
62 Reason_BackedgeCount, // Simple/StackWalk-policy
63 Reason_Tiered, // Tiered-policy
64 Reason_Replay, // ciReplay
65 Reason_Whitebox, // Whitebox API
66 Reason_MustBeCompiled, // Used for -Xcomp or AlwaysCompileLoopMethods (see CompilationPolicy::must_be_compiled())
67 Reason_Bootstrap, // JVMCI bootstrap
68 Reason_Preload, // pre-load SC code
69 Reason_Precompile,
70 Reason_PrecompileForPreload,
71 Reason_Count
72 };
73
74 static const char* reason_name(CompileTask::CompileReason compile_reason) {
75 static const char* reason_names[] = {
76 "no_reason",
77 "count",
78 "backedge_count",
79 "tiered",
80 "replay",
81 "whitebox",
82 "must_be_compiled",
83 "bootstrap",
84 "preload",
85 "precompile",
86 "precompile_for_preload",
87 };
88 return reason_names[compile_reason];
89 }
90
91 static bool reason_is_precompiled(CompileTask::CompileReason compile_reason) {
92 return (compile_reason == CompileTask::Reason_Precompile) ||
93 (compile_reason == CompileTask::Reason_PrecompileForPreload);
94 }
95
96 private:
97 static CompileTask* _task_free_list;
98 Monitor* _lock;
99 int _compile_id;
100 Method* _method;
101 jobject _method_holder;
102 int _osr_bci;
103 bool _is_complete;
104 bool _is_success;
105 bool _requires_online_compilation;
106 bool _is_blocking;
107 CodeSection::csize_t _nm_content_size;
108 CodeSection::csize_t _nm_total_size;
109 CodeSection::csize_t _nm_insts_size;
110 DirectiveSet* _directive;
111 AbstractCompiler* _compiler;
112 SCCEntry* _scc_entry;
113 #if INCLUDE_JVMCI
114 bool _has_waiter;
115 // Compilation state for a blocking JVMCI compilation
116 JVMCICompileState* _blocking_jvmci_compile_state;
117 #endif
118 int _comp_level;
119 int _num_inlined_bytecodes;
120 CompileTask* _next;
121 CompileTask* _prev;
122 bool _is_free;
123 // Fields used for logging why the compilation was initiated:
124 jlong _time_created; // time when task was created
125 jlong _time_queued; // time when task was enqueued
126 jlong _time_started; // time when compilation started
127 jlong _time_finished; // time when compilation finished
128 Method* _hot_method; // which method actually triggered this task
129 jobject _hot_method_holder;
130 int _hot_count; // information about its invocation counter
131 CompileReason _compile_reason; // more info about the task
132 const char* _failure_reason;
133 // Specifies if _failure_reason is on the C heap.
134 bool _failure_reason_on_C_heap;
135 CompileTrainingData* _training_data;
136 CompileQueue* _compile_queue;
137 size_t _arena_bytes; // peak size of temporary memory during compilation (e.g. node arenas)
138
139 public:
140 CompileTask() : _failure_reason(nullptr), _failure_reason_on_C_heap(false) {
141 // May hold MethodCompileQueue_lock
142 _lock = new Monitor(Mutex::safepoint-1, "CompileTask_lock");
143 }
144
145 void initialize(int compile_id, const methodHandle& method, int osr_bci, int comp_level,
146 const methodHandle& hot_method, int hot_count, SCCEntry* scc_entry,
147 CompileTask::CompileReason compile_reason,
148 CompileQueue* compile_queue,
149 bool requires_online_compilation, bool is_blocking);
150
151 static CompileTask* allocate();
152 static void free(CompileTask* task);
153
154 int compile_id() const { return _compile_id; }
155 Method* method() const { return _method; }
156 Method* hot_method() const { return _hot_method; }
157 int osr_bci() const { return _osr_bci; }
158 bool is_complete() const { return _is_complete; }
159 bool is_blocking() const { return _is_blocking; }
160 bool is_success() const { return _is_success; }
161 bool is_scc() const { return _scc_entry != nullptr; }
162 void clear_scc() { _scc_entry = nullptr; }
163 SCCEntry* scc_entry() { return _scc_entry; }
164 bool requires_online_compilation() const { return _requires_online_compilation; }
165 DirectiveSet* directive() const { return _directive; }
166 CompileReason compile_reason() const { return _compile_reason; }
167 CodeSection::csize_t nm_content_size() { return _nm_content_size; }
168 void set_nm_content_size(CodeSection::csize_t size) { _nm_content_size = size; }
169 CodeSection::csize_t nm_insts_size() { return _nm_insts_size; }
170 void set_nm_insts_size(CodeSection::csize_t size) { _nm_insts_size = size; }
171 CodeSection::csize_t nm_total_size() { return _nm_total_size; }
172 void set_nm_total_size(CodeSection::csize_t size) { _nm_total_size = size; }
173 bool preload() const { return (_compile_reason == Reason_Preload); }
174 bool can_become_stale() const {
175 switch (_compile_reason) {
176 case Reason_BackedgeCount:
177 case Reason_InvocationCount:
178 case Reason_Tiered:
179 return !_is_blocking;
180 default:
181 return false;
182 }
183 }
184 #if INCLUDE_JVMCI
185 bool should_wait_for_compilation() const {
186 // Wait for blocking compilation to finish.
187 switch (_compile_reason) {
188 case Reason_Replay:
189 case Reason_Whitebox:
190 case Reason_Bootstrap:
191 return _is_blocking;
192 default:
193 return false;
194 }
195 }
196
197 bool has_waiter() const { return _has_waiter; }
198 void clear_waiter() { _has_waiter = false; }
199 JVMCICompileState* blocking_jvmci_compile_state() const { return _blocking_jvmci_compile_state; }
200 void set_blocking_jvmci_compile_state(JVMCICompileState* state) {
201 _blocking_jvmci_compile_state = state;
202 }
203 #endif
204
205 bool is_precompiled() {
206 return reason_is_precompiled(compile_reason());
207 }
208
209 Monitor* lock() const { return _lock; }
210
211 CompileQueue* compile_queue() const { return _compile_queue; }
212
213 void mark_complete() { _is_complete = true; }
214 void mark_success() { _is_success = true; }
215 void mark_queued(jlong time) { _time_queued = time; }
216 void mark_started(jlong time) { _time_started = time; }
217 void mark_finished(jlong time) { _time_finished = time; }
218
219 int comp_level() { return _comp_level;}
220 void set_comp_level(int comp_level) { _comp_level = comp_level;}
221
222 AbstractCompiler* compiler() const;
223 CompileTask* select_for_compilation();
224
225 int num_inlined_bytecodes() const { return _num_inlined_bytecodes; }
226 void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; }
227
228 static CompileTask* volatile* next_ptr(CompileTask& task) { return &task._next; }
229
230 CompileTask* next() const { return _next; }
231 void set_next(CompileTask* next) { _next = next; }
232 CompileTask* prev() const { return _prev; }
233 void set_prev(CompileTask* prev) { _prev = prev; }
234 bool is_free() const { return _is_free; }
235 void set_is_free(bool val) { _is_free = val; }
236 bool is_unloaded() const;
237
238 CompileTrainingData* training_data() const { return _training_data; }
239 void set_training_data(CompileTrainingData*td) { _training_data = td; }
240
241 CompileReason compile_reason() { return _compile_reason; }
242
243 // RedefineClasses support
244 void metadata_do(MetadataClosure* f);
245 void mark_on_stack();
246
247 void set_arena_bytes(size_t s) { _arena_bytes = s; }
248 size_t arena_bytes() const { return _arena_bytes; }
249
250 private:
251 static void print_impl(outputStream* st, Method* method, int compile_id, int comp_level,
252 bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false,
253 bool is_scc = false, bool is_preload = false,
254 const char* compiler_name = nullptr,
255 const char* msg = nullptr, bool short_form = false, bool cr = true,
256 jlong time_created = 0, jlong time_queued = 0, jlong time_started = 0, jlong time_finished = 0);
257
258 public:
259 void print(outputStream* st = tty, const char* msg = nullptr, bool short_form = false, bool cr = true);
260 void print_ul(const char* msg = nullptr);
261 static void print(outputStream* st, const nmethod* nm, const char* msg = nullptr, bool short_form = false, bool cr = true) {
262 print_impl(st, nm->method(), nm->compile_id(), nm->comp_level(),
263 nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false,
264 nm->scc_entry() != nullptr, nm->preloaded(),
265 nm->compiler_name(), msg, short_form, cr);
266 }
267 static void print_ul(const nmethod* nm, const char* msg = nullptr);
268
269 static void print_inline_indent(int inline_level, outputStream* st = tty);
270
271 void print_tty();
272 void print_line_on_error(outputStream* st, char* buf, int buflen);
273
274 void log_task(xmlStream* log);
275 void log_task_queued();
276 void log_task_start(CompileLog* log);
277 void log_task_done(CompileLog* log);
278
279 void set_failure_reason(const char* reason, bool on_C_heap = false) {
280 _failure_reason = reason;
281 _failure_reason_on_C_heap = on_C_heap;
282 }
283
284 bool check_break_at_flags();
285
286 static void print_inlining_inner(outputStream* st, ciMethod* method, int inline_level, int bci, InliningResult result, const char* msg = nullptr);
287 static void print_inlining_tty(ciMethod* method, int inline_level, int bci, InliningResult result, const char* msg = nullptr) {
288 print_inlining_inner(tty, method, inline_level, bci, result, msg);
289 }
290 static void print_inlining_ul(ciMethod* method, int inline_level, int bci, InliningResult result, const char* msg = nullptr);
291 };
292
293 #endif // SHARE_COMPILER_COMPILETASK_HPP