1 /*
2 * Copyright (c) 1999, 2023, 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
25 #ifndef SHARE_COMPILER_COMPILEBROKER_HPP
26 #define SHARE_COMPILER_COMPILEBROKER_HPP
27
28 #include "ci/compilerInterface.hpp"
29 #include "compiler/abstractCompiler.hpp"
30 #include "compiler/compileTask.hpp"
31 #include "compiler/compilerDirectives.hpp"
32 #include "compiler/compilerThread.hpp"
33 #include "runtime/atomic.hpp"
34 #include "runtime/perfDataTypes.hpp"
35 #include "utilities/stack.hpp"
36 #if INCLUDE_JVMCI
37 #include "jvmci/jvmciCompiler.hpp"
38 #endif
39
40 class nmethod;
41
42 // CompilerCounters
43 //
44 // Per Compiler Performance Counters.
45 //
46 class CompilerCounters : public CHeapObj<mtCompiler> {
47
48 public:
49 enum {
50 cmname_buffer_length = 160
51 };
52
53 private:
54
55 char _current_method[cmname_buffer_length];
56 int _compile_type;
57
58 public:
59 CompilerCounters();
60
61 // these methods should be called in a thread safe context
62
63 void set_current_method(const char* method) {
64 strncpy(_current_method, method, (size_t)cmname_buffer_length-1);
65 _current_method[cmname_buffer_length-1] = '\0';
66 }
67
68 char* current_method() { return _current_method; }
69
70 void set_compile_type(int compile_type) {
71 _compile_type = compile_type;
72 }
73
74 int compile_type() { return _compile_type; }
75
76 };
77
78 // CompileQueue
79 //
80 // A list of CompileTasks.
81 class CompileQueue : public CHeapObj<mtCompiler> {
82 private:
83 const char* _name;
84
85 CompileTask* _first;
86 CompileTask* _last;
87
88 CompileTask* _first_stale;
89
90 int _size;
91 int _peak_size;
92 uint _total_added;
93 uint _total_removed;
94
95 void purge_stale_tasks();
96 public:
97 CompileQueue(const char* name) {
98 _name = name;
99 _first = nullptr;
100 _last = nullptr;
101 _size = 0;
102 _total_added = 0;
103 _total_removed = 0;
104 _peak_size = 0;
105 _first_stale = nullptr;
106 }
107
108 const char* name() const { return _name; }
109
110 void add(CompileTask* task);
111 void remove(CompileTask* task);
112 void remove_and_mark_stale(CompileTask* task);
113 CompileTask* first() { return _first; }
114 CompileTask* last() { return _last; }
115
116 CompileTask* get(CompilerThread* thread);
117
118 bool is_empty() const { return _first == nullptr; }
119 int size() const { return _size; }
120
121 int get_peak_size() const { return _peak_size; }
122 uint get_total_added() const { return _total_added; }
123 uint get_total_removed() const { return _total_removed; }
124
125 // Redefine Classes support
126 void mark_on_stack();
127 void free_all();
128 void print_tty();
129 void print(outputStream* st = tty);
130
131 ~CompileQueue() {
132 assert (is_empty(), " Compile Queue must be empty");
133 }
134 };
135
136 // CompileTaskWrapper
137 //
138 // Assign this task to the current thread. Deallocate the task
139 // when the compilation is complete.
140 class CompileTaskWrapper : StackObj {
141 public:
142 CompileTaskWrapper(CompileTask* task);
143 ~CompileTaskWrapper();
144 };
145
146 // Compilation
147 //
148 // The broker for all compilation requests.
149 class CompileBroker: AllStatic {
150 friend class Threads;
151 friend class CompileTaskWrapper;
152
153 public:
154 enum {
155 name_buffer_length = 100
156 };
157
158 // Compile type Information for print_last_compile() and CompilerCounters
159 enum { no_compile, normal_compile, osr_compile, native_compile };
160 static int assign_compile_id (const methodHandle& method, int osr_bci);
161
162
163 private:
164 static bool _initialized;
165 static volatile bool _should_block;
166
167 // This flag can be used to stop compilation or turn it back on
168 static volatile jint _should_compile_new_jobs;
169
170 // The installed compiler(s)
171 static AbstractCompiler* _compilers[2];
172
173 // The maximum numbers of compiler threads to be determined during startup.
174 static int _c1_count, _c2_count;
175
176 // An array of compiler thread Java objects
177 static jobject *_compiler1_objects, *_compiler2_objects;
178
179 // An array of compiler logs
180 static CompileLog **_compiler1_logs, **_compiler2_logs;
181
182 // These counters are used for assigning id's to each compilation
183 static volatile jint _compilation_id;
184 static volatile jint _osr_compilation_id;
185 static volatile jint _native_compilation_id;
186
187 static CompileQueue* _c2_compile_queue;
188 static CompileQueue* _c1_compile_queue;
189
190 // performance counters
191 static PerfCounter* _perf_total_compilation;
192 static PerfCounter* _perf_osr_compilation;
193 static PerfCounter* _perf_standard_compilation;
194
195 static PerfCounter* _perf_total_bailout_count;
196 static PerfCounter* _perf_total_invalidated_count;
197 static PerfCounter* _perf_total_compile_count;
198 static PerfCounter* _perf_total_osr_compile_count;
199 static PerfCounter* _perf_total_standard_compile_count;
200
201 static PerfCounter* _perf_sum_osr_bytes_compiled;
202 static PerfCounter* _perf_sum_standard_bytes_compiled;
203 static PerfCounter* _perf_sum_nmethod_size;
204 static PerfCounter* _perf_sum_nmethod_code_size;
205
206 static PerfStringVariable* _perf_last_method;
207 static PerfStringVariable* _perf_last_failed_method;
208 static PerfStringVariable* _perf_last_invalidated_method;
209 static PerfVariable* _perf_last_compile_type;
210 static PerfVariable* _perf_last_compile_size;
211 static PerfVariable* _perf_last_failed_type;
212 static PerfVariable* _perf_last_invalidated_type;
213
214 // Timers and counters for generating statistics
215 static elapsedTimer _t_total_compilation;
216 static elapsedTimer _t_osr_compilation;
217 static elapsedTimer _t_standard_compilation;
218 static elapsedTimer _t_invalidated_compilation;
219 static elapsedTimer _t_bailedout_compilation;
220
221 static uint _total_compile_count;
222 static uint _total_bailout_count;
223 static uint _total_invalidated_count;
224 static uint _total_native_compile_count;
225 static uint _total_osr_compile_count;
226 static uint _total_standard_compile_count;
227 static uint _total_compiler_stopped_count;
228 static uint _total_compiler_restarted_count;
229 static uint _sum_osr_bytes_compiled;
230 static uint _sum_standard_bytes_compiled;
231 static uint _sum_nmethod_size;
232 static uint _sum_nmethod_code_size;
233 static jlong _peak_compilation_time;
234
235 static CompilerStatistics _stats_per_level[];
236
237 static volatile int _print_compilation_warning;
238
239 enum ThreadType {
240 compiler_t,
241 deoptimizer_t
242 };
243
244 static JavaThread* make_thread(ThreadType type, jobject thread_oop, CompileQueue* queue, AbstractCompiler* comp, JavaThread* THREAD);
245 static void init_compiler_threads();
246 static void possibly_add_compiler_threads(JavaThread* THREAD);
247 static bool compilation_is_prohibited(const methodHandle& method, int osr_bci, int comp_level, bool excluded);
248
249 static CompileTask* create_compile_task(CompileQueue* queue,
250 int compile_id,
251 const methodHandle& method,
252 int osr_bci,
253 int comp_level,
254 const methodHandle& hot_method,
255 int hot_count,
256 CompileTask::CompileReason compile_reason,
257 bool blocking);
258 static void wait_for_completion(CompileTask* task);
259 #if INCLUDE_JVMCI
260 static bool wait_for_jvmci_completion(JVMCICompiler* comp, CompileTask* task, JavaThread* thread);
261 #endif
262
263 static void free_buffer_blob_if_allocated(CompilerThread* thread);
264
265 static void invoke_compiler_on_method(CompileTask* task);
266 static void handle_compile_error(CompilerThread* thread, CompileTask* task, ciEnv* ci_env,
267 int compilable, const char* failure_reason);
268 static void update_compile_perf_data(CompilerThread *thread, const methodHandle& method, bool is_osr);
269
270 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
271
272 static void compile_method_base(const methodHandle& method,
273 int osr_bci,
274 int comp_level,
275 const methodHandle& hot_method,
276 int hot_count,
277 CompileTask::CompileReason compile_reason,
278 bool blocking,
279 Thread* thread);
280
281 static CompileQueue* compile_queue(int comp_level);
282 static bool init_compiler_runtime();
283 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread);
284
285 public:
286 enum {
287 // The entry bci used for non-OSR compilations.
288 standard_entry_bci = InvocationEntryBci
289 };
290
291 static AbstractCompiler* compiler(int comp_level) {
292 if (is_c2_compile(comp_level)) return _compilers[1]; // C2
293 if (is_c1_compile(comp_level)) return _compilers[0]; // C1
294 return nullptr;
295 }
296
297 static bool compilation_is_complete(const methodHandle& method, int osr_bci, int comp_level);
298 static bool compilation_is_in_queue(const methodHandle& method);
299 static void print_compile_queues(outputStream* st);
300 static int queue_size(int comp_level) {
301 CompileQueue *q = compile_queue(comp_level);
302 return q != nullptr ? q->size() : 0;
303 }
304 static void compilation_init(JavaThread* THREAD);
305 static void init_compiler_thread_log();
306 static nmethod* compile_method(const methodHandle& method,
307 int osr_bci,
308 int comp_level,
309 const methodHandle& hot_method,
310 int hot_count,
311 CompileTask::CompileReason compile_reason,
312 TRAPS);
313 static CompileQueue* c1_compile_queue();
314 static CompileQueue* c2_compile_queue();
315
316 private:
317 static nmethod* compile_method(const methodHandle& method,
318 int osr_bci,
319 int comp_level,
320 const methodHandle& hot_method,
321 int hot_count,
322 CompileTask::CompileReason compile_reason,
323 DirectiveSet* directive,
324 TRAPS);
325
326 public:
327 // Acquire any needed locks and assign a compile id
328 static int assign_compile_id_unlocked(Thread* thread, const methodHandle& method, int osr_bci);
329
330 static void compiler_thread_loop();
331 static int get_compilation_id() { return _compilation_id; }
332
333 // Set _should_block.
334 // Call this from the VM, with Threads_lock held and a safepoint requested.
335 static void set_should_block();
336
337 // Call this from the compiler at convenient points, to poll for _should_block.
338 static void maybe_block();
339
340 enum CompilerActivity {
341 // Flags for toggling compiler activity
342 stop_compilation = 0,
343 run_compilation = 1,
344 shutdown_compilation = 2
345 };
346
347 static inline jint get_compilation_activity_mode() { return _should_compile_new_jobs; }
348 static inline bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
349 static bool set_should_compile_new_jobs(jint new_state) {
350 // Return success if the current caller set it
351 jint old = Atomic::cmpxchg(&_should_compile_new_jobs, 1-new_state, new_state);
352 bool success = (old == (1-new_state));
353 if (success) {
354 if (new_state == run_compilation) {
355 _total_compiler_restarted_count++;
356 } else {
357 _total_compiler_stopped_count++;
358 }
359 }
360 return success;
361 }
362
363 static void disable_compilation_forever() {
364 UseCompiler = false;
365 AlwaysCompileLoopMethods = false;
366 Atomic::xchg(&_should_compile_new_jobs, jint(shutdown_compilation));
367 }
368
369 static bool is_compilation_disabled_forever() {
370 return _should_compile_new_jobs == shutdown_compilation;
371 }
372 static void handle_full_code_cache(CodeBlobType code_blob_type);
373 // Ensures that warning is only printed once.
374 static bool should_print_compiler_warning() {
375 jint old = Atomic::cmpxchg(&_print_compilation_warning, 0, 1);
376 return old == 0;
377 }
378 // Return total compilation ticks
379 static jlong total_compilation_ticks();
380
381 // Redefine Classes support
382 static void mark_on_stack();
383
384 // Print current compilation time stats for a given compiler
385 static void print_times(const char* name, CompilerStatistics* stats);
386
387 // Print a detailed accounting of compilation time
388 static void print_times(bool per_compiler = true, bool aggregate = true);
389
390 // compiler name for debugging
391 static const char* compiler_name(int comp_level);
392
393 // Provide access to compiler thread Java objects
394 static jobject compiler1_object(int idx) {
395 assert(_compiler1_objects != nullptr, "must be initialized");
396 assert(idx < _c1_count, "oob");
397 return _compiler1_objects[idx];
398 }
399
400 static jobject compiler2_object(int idx) {
401 assert(_compiler2_objects != nullptr, "must be initialized");
402 assert(idx < _c2_count, "oob");
403 return _compiler2_objects[idx];
404 }
405
406 static AbstractCompiler* compiler1() { return _compilers[0]; }
407 static AbstractCompiler* compiler2() { return _compilers[1]; }
408
409 static bool can_remove(CompilerThread *ct, bool do_it);
410
411 static CompileLog* get_log(CompilerThread* ct);
412
413 static int get_c1_thread_count() { return _compilers[0]->num_compiler_threads(); }
414 static int get_c2_thread_count() { return _compilers[1]->num_compiler_threads(); }
415 static int get_total_compile_count() { return _total_compile_count; }
416 static int get_total_bailout_count() { return _total_bailout_count; }
417 static int get_total_invalidated_count() { return _total_invalidated_count; }
418 static int get_total_native_compile_count() { return _total_native_compile_count; }
419 static int get_total_osr_compile_count() { return _total_osr_compile_count; }
420 static int get_total_standard_compile_count() { return _total_standard_compile_count; }
421 static int get_total_compiler_stopped_count() { return _total_compiler_stopped_count; }
422 static int get_total_compiler_restarted_count() { return _total_compiler_restarted_count; }
423 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
424 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
425 static int get_sum_nmethod_size() { return _sum_nmethod_size;}
426 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
427 static jlong get_peak_compilation_time() { return _peak_compilation_time; }
428 static jlong get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
429
430 // Log that compilation profiling is skipped because metaspace is full.
431 static void log_metaspace_failure();
432
433 // CodeHeap State Analytics.
434 static void print_info(outputStream *out);
435 static void print_heapinfo(outputStream *out, const char* function, size_t granularity);
436 };
437
438 #endif // SHARE_COMPILER_COMPILEBROKER_HPP