1 /*
2 * Copyright (c) 1999, 2015, 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_VM_COMPILER_COMPILEBROKER_HPP
26 #define SHARE_VM_COMPILER_COMPILEBROKER_HPP
27
28 #include "ci/compilerInterface.hpp"
29 #include "compiler/abstractCompiler.hpp"
30 #include "compiler/compileTask.hpp"
31 #include "runtime/perfData.hpp"
32
33 class nmethod;
34 class nmethodLocker;
35
36 // CompilerCounters
37 //
38 // Per Compiler Performance Counters.
39 //
40 class CompilerCounters : public CHeapObj<mtCompiler> {
41
42 public:
43 enum {
44 cmname_buffer_length = 160
45 };
46
47 private:
48
49 char _current_method[cmname_buffer_length];
50 PerfStringVariable* _perf_current_method;
51
52 int _compile_type;
53 PerfVariable* _perf_compile_type;
54
55 PerfCounter* _perf_time;
56 PerfCounter* _perf_compiles;
57
58 public:
59 CompilerCounters(const char* name, int instance, TRAPS);
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 if (UsePerfData) _perf_current_method->set_value(method);
67 }
68
69 char* current_method() { return _current_method; }
70
71 void set_compile_type(int compile_type) {
72 _compile_type = compile_type;
73 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type);
74 }
75
76 int compile_type() { return _compile_type; }
77
78 PerfCounter* time_counter() { return _perf_time; }
79 PerfCounter* compile_counter() { return _perf_compiles; }
80 };
81
82 // CompileQueue
83 //
84 // A list of CompileTasks.
85 class CompileQueue : public CHeapObj<mtCompiler> {
86 private:
87 const char* _name;
88
89 CompileTask* _first;
90 CompileTask* _last;
91
92 CompileTask* _first_stale;
93
94 int _size;
95
96 void purge_stale_tasks();
97 public:
98 CompileQueue(const char* name) {
99 _name = name;
100 _first = NULL;
101 _last = NULL;
102 _size = 0;
103 _first_stale = NULL;
104 }
105
106 const char* name() const { return _name; }
107
108 void add(CompileTask* task);
109 void remove(CompileTask* task);
110 void remove_and_mark_stale(CompileTask* task);
111 CompileTask* first() { return _first; }
112 CompileTask* last() { return _last; }
113
114 CompileTask* get();
115
116 bool is_empty() const { return _first == NULL; }
117 int size() const { return _size; }
118
119
120 // Redefine Classes support
121 void mark_on_stack();
122 void free_all();
123 void print_tty();
124 void print(outputStream* st = tty);
125
126 ~CompileQueue() {
127 assert (is_empty(), " Compile Queue must be empty");
128 }
129 };
130
131 // CompileTaskWrapper
132 //
133 // Assign this task to the current thread. Deallocate the task
134 // when the compilation is complete.
135 class CompileTaskWrapper : StackObj {
136 public:
137 CompileTaskWrapper(CompileTask* task);
138 ~CompileTaskWrapper();
139 };
140
141
142 // Compilation
143 //
144 // The broker for all compilation requests.
145 class CompileBroker: AllStatic {
146 friend class Threads;
147 friend class CompileTaskWrapper;
148
149 public:
150 enum {
151 name_buffer_length = 100
152 };
153
154 // Compile type Information for print_last_compile() and CompilerCounters
155 enum { no_compile, normal_compile, osr_compile, native_compile };
156 static int assign_compile_id (methodHandle method, int osr_bci);
157
158
159 private:
160 static bool _initialized;
161 static volatile bool _should_block;
162
163 // This flag can be used to stop compilation or turn it back on
164 static volatile jint _should_compile_new_jobs;
165
166 // The installed compiler(s)
167 static AbstractCompiler* _compilers[2];
168
169 // These counters are used for assigning id's to each compilation
170 static volatile jint _compilation_id;
171 static volatile jint _osr_compilation_id;
172
173 static int _last_compile_type;
174 static int _last_compile_level;
175 static char _last_method_compiled[name_buffer_length];
176
177 static CompileQueue* _c2_compile_queue;
178 static CompileQueue* _c1_compile_queue;
179
180 // performance counters
181 static PerfCounter* _perf_total_compilation;
182 static PerfCounter* _perf_native_compilation;
183 static PerfCounter* _perf_osr_compilation;
184 static PerfCounter* _perf_standard_compilation;
185
186 static PerfCounter* _perf_total_bailout_count;
187 static PerfCounter* _perf_total_invalidated_count;
188 static PerfCounter* _perf_total_compile_count;
189 static PerfCounter* _perf_total_native_compile_count;
190 static PerfCounter* _perf_total_osr_compile_count;
191 static PerfCounter* _perf_total_standard_compile_count;
192
193 static PerfCounter* _perf_sum_osr_bytes_compiled;
194 static PerfCounter* _perf_sum_standard_bytes_compiled;
195 static PerfCounter* _perf_sum_nmethod_size;
196 static PerfCounter* _perf_sum_nmethod_code_size;
197
198 static PerfStringVariable* _perf_last_method;
199 static PerfStringVariable* _perf_last_failed_method;
200 static PerfStringVariable* _perf_last_invalidated_method;
201 static PerfVariable* _perf_last_compile_type;
202 static PerfVariable* _perf_last_compile_size;
203 static PerfVariable* _perf_last_failed_type;
204 static PerfVariable* _perf_last_invalidated_type;
205
206 // Timers and counters for generating statistics
207 static elapsedTimer _t_total_compilation;
208 static elapsedTimer _t_osr_compilation;
209 static elapsedTimer _t_standard_compilation;
210 static elapsedTimer _t_invalidated_compilation;
211 static elapsedTimer _t_bailedout_compilation;
212
213 static int _total_compile_count;
214 static int _total_bailout_count;
215 static int _total_invalidated_count;
216 static int _total_native_compile_count;
217 static int _total_osr_compile_count;
218 static int _total_standard_compile_count;
219 static int _sum_osr_bytes_compiled;
220 static int _sum_standard_bytes_compiled;
221 static int _sum_nmethod_size;
222 static int _sum_nmethod_code_size;
223 static long _peak_compilation_time;
224
225 static volatile jint _print_compilation_warning;
226
227 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS);
228 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count);
229 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
230 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
231 static bool is_compile_blocking();
232 static void preload_classes (methodHandle method, TRAPS);
233
234 static CompileTask* create_compile_task(CompileQueue* queue,
235 int compile_id,
236 methodHandle method,
237 int osr_bci,
238 int comp_level,
239 methodHandle hot_method,
240 int hot_count,
241 const char* comment,
242 bool blocking);
243 static void wait_for_completion(CompileTask* task);
244
245 static void invoke_compiler_on_method(CompileTask* task);
246 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
247 static void push_jni_handle_block();
248 static void pop_jni_handle_block();
249 static bool check_break_at(methodHandle method, int compile_id, bool is_osr);
250 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
251
252 static void compile_method_base(methodHandle method,
253 int osr_bci,
254 int comp_level,
255 methodHandle hot_method,
256 int hot_count,
257 const char* comment,
258 Thread* thread);
259
260 static CompileQueue* compile_queue(int comp_level);
261 static bool init_compiler_runtime();
262 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread);
263
264 public:
265 enum {
266 // The entry bci used for non-OSR compilations.
267 standard_entry_bci = InvocationEntryBci
268 };
269
270 static AbstractCompiler* compiler(int comp_level) {
271 if (is_c2_compile(comp_level)) return _compilers[1]; // C2
272 if (is_c1_compile(comp_level)) return _compilers[0]; // C1
273 return NULL;
274 }
275
276 static bool compilation_is_in_queue(methodHandle method);
277 static void print_compile_queues(outputStream* st);
278 static int queue_size(int comp_level) {
279 CompileQueue *q = compile_queue(comp_level);
280 return q != NULL ? q->size() : 0;
281 }
282 static void compilation_init();
283 static void init_compiler_thread_log();
284 static nmethod* compile_method(methodHandle method,
285 int osr_bci,
286 int comp_level,
287 methodHandle hot_method,
288 int hot_count,
289 const char* comment, Thread* thread);
290
291 static void compiler_thread_loop();
292 static uint get_compilation_id() { return _compilation_id; }
293
294 // Set _should_block.
295 // Call this from the VM, with Threads_lock held and a safepoint requested.
296 static void set_should_block();
297
298 // Call this from the compiler at convenient points, to poll for _should_block.
299 static void maybe_block();
300
301 enum {
302 // Flags for toggling compiler activity
303 stop_compilation = 0,
304 run_compilation = 1,
305 shutdown_compilaton = 2
306 };
307
308 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; }
309 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
310 static bool set_should_compile_new_jobs(jint new_state) {
311 // Return success if the current caller set it
312 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
313 return (old == (1-new_state));
314 }
315
316 static void disable_compilation_forever() {
317 UseCompiler = false;
318 AlwaysCompileLoopMethods = false;
319 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs);
320 }
321
322 static bool is_compilation_disabled_forever() {
323 return _should_compile_new_jobs == shutdown_compilaton;
324 }
325 static void handle_full_code_cache(int code_blob_type);
326 // Ensures that warning is only printed once.
327 static bool should_print_compiler_warning() {
328 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0);
329 return old == 0;
330 }
331 // Return total compilation ticks
332 static jlong total_compilation_ticks() {
333 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
334 }
335
336 // Redefine Classes support
337 static void mark_on_stack();
338
339 // Print a detailed accounting of compilation time
340 static void print_times();
341
342 // Debugging output for failure
343 static void print_last_compile();
344
345 static void print_compiler_threads_on(outputStream* st);
346
347 // compiler name for debugging
348 static const char* compiler_name(int comp_level);
349
350 static int get_total_compile_count() { return _total_compile_count; }
351 static int get_total_bailout_count() { return _total_bailout_count; }
352 static int get_total_invalidated_count() { return _total_invalidated_count; }
353 static int get_total_native_compile_count() { return _total_native_compile_count; }
354 static int get_total_osr_compile_count() { return _total_osr_compile_count; }
355 static int get_total_standard_compile_count() { return _total_standard_compile_count; }
356 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
357 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
358 static int get_sum_nmethod_size() { return _sum_nmethod_size;}
359 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
360 static long get_peak_compilation_time() { return _peak_compilation_time; }
361 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
362
363 // Log that compilation profiling is skipped because metaspace is full.
364 static void log_metaspace_failure();
365 };
366
367 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP