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 "compiler/compilerDirectives.hpp"
32 #include "runtime/perfData.hpp"
33 #include "utilities/stack.hpp"
34
35 class nmethod;
36 class nmethodLocker;
37
38 // CompilerCounters
39 //
40 // Per Compiler Performance Counters.
41 //
42 class CompilerCounters : public CHeapObj<mtCompiler> {
43
44 public:
45 enum {
46 cmname_buffer_length = 160
47 };
48
49 private:
50
51 char _current_method[cmname_buffer_length];
52 PerfStringVariable* _perf_current_method;
53
54 int _compile_type;
55 PerfVariable* _perf_compile_type;
56
57 PerfCounter* _perf_time;
58 PerfCounter* _perf_compiles;
59
60 public:
61 CompilerCounters(const char* name, int instance, TRAPS);
62
63 // these methods should be called in a thread safe context
64
65 void set_current_method(const char* method) {
66 strncpy(_current_method, method, (size_t)cmname_buffer_length-1);
67 _current_method[cmname_buffer_length-1] = '\0';
68 if (UsePerfData) _perf_current_method->set_value(method);
69 }
70
71 char* current_method() { return _current_method; }
72
73 void set_compile_type(int compile_type) {
74 _compile_type = compile_type;
75 if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type);
76 }
77
78 int compile_type() { return _compile_type; }
79
80 PerfCounter* time_counter() { return _perf_time; }
81 PerfCounter* compile_counter() { return _perf_compiles; }
82 };
83
84 // CompileQueue
85 //
86 // A list of CompileTasks.
87 class CompileQueue : public CHeapObj<mtCompiler> {
88 private:
89 const char* _name;
90
91 CompileTask* _first;
92 CompileTask* _last;
93
94 CompileTask* _first_stale;
95
96 int _size;
97
98 void purge_stale_tasks();
99 public:
100 CompileQueue(const char* name) {
101 _name = name;
102 _first = NULL;
103 _last = NULL;
104 _size = 0;
105 _first_stale = NULL;
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();
117
118 bool is_empty() const { return _first == NULL; }
119 int size() const { return _size; }
120
121
122 // Redefine Classes support
123 void mark_on_stack();
124 void free_all();
125 void print_tty();
126 void print(outputStream* st = tty);
127
128 ~CompileQueue() {
129 assert (is_empty(), " Compile Queue must be empty");
130 }
131 };
132
133 // CompileTaskWrapper
134 //
135 // Assign this task to the current thread. Deallocate the task
136 // when the compilation is complete.
137 class CompileTaskWrapper : StackObj {
138 public:
139 CompileTaskWrapper(CompileTask* task);
140 ~CompileTaskWrapper();
141 };
142
143 // Compilation
144 //
145 // The broker for all compilation requests.
146 class CompileBroker: AllStatic {
147 friend class Threads;
148 friend class CompileTaskWrapper;
149
150 public:
151 enum {
152 name_buffer_length = 100
153 };
154
155 // Compile type Information for print_last_compile() and CompilerCounters
156 enum { no_compile, normal_compile, osr_compile, native_compile };
157 static int assign_compile_id (methodHandle method, int osr_bci);
158
159
160 private:
161 static bool _initialized;
162 static volatile bool _should_block;
163
164 // This flag can be used to stop compilation or turn it back on
165 static volatile jint _should_compile_new_jobs;
166
167 // The installed compiler(s)
168 static AbstractCompiler* _compilers[2];
169
170 // These counters are used for assigning id's to each compilation
171 static volatile jint _compilation_id;
172 static volatile jint _osr_compilation_id;
173
174 static int _last_compile_type;
175 static int _last_compile_level;
176 static char _last_method_compiled[name_buffer_length];
177
178 static CompileQueue* _c2_compile_queue;
179 static CompileQueue* _c1_compile_queue;
180
181 // performance counters
182 static PerfCounter* _perf_total_compilation;
183 static PerfCounter* _perf_native_compilation;
184 static PerfCounter* _perf_osr_compilation;
185 static PerfCounter* _perf_standard_compilation;
186
187 static PerfCounter* _perf_total_bailout_count;
188 static PerfCounter* _perf_total_invalidated_count;
189 static PerfCounter* _perf_total_compile_count;
190 static PerfCounter* _perf_total_native_compile_count;
191 static PerfCounter* _perf_total_osr_compile_count;
192 static PerfCounter* _perf_total_standard_compile_count;
193
194 static PerfCounter* _perf_sum_osr_bytes_compiled;
195 static PerfCounter* _perf_sum_standard_bytes_compiled;
196 static PerfCounter* _perf_sum_nmethod_size;
197 static PerfCounter* _perf_sum_nmethod_code_size;
198
199 static PerfStringVariable* _perf_last_method;
200 static PerfStringVariable* _perf_last_failed_method;
201 static PerfStringVariable* _perf_last_invalidated_method;
202 static PerfVariable* _perf_last_compile_type;
203 static PerfVariable* _perf_last_compile_size;
204 static PerfVariable* _perf_last_failed_type;
205 static PerfVariable* _perf_last_invalidated_type;
206
207 // Timers and counters for generating statistics
208 static elapsedTimer _t_total_compilation;
209 static elapsedTimer _t_osr_compilation;
210 static elapsedTimer _t_standard_compilation;
211 static elapsedTimer _t_invalidated_compilation;
212 static elapsedTimer _t_bailedout_compilation;
213
214 static int _total_compile_count;
215 static int _total_bailout_count;
216 static int _total_invalidated_count;
217 static int _total_native_compile_count;
218 static int _total_osr_compile_count;
219 static int _total_standard_compile_count;
220 static int _sum_osr_bytes_compiled;
221 static int _sum_standard_bytes_compiled;
222 static int _sum_nmethod_size;
223 static int _sum_nmethod_code_size;
224 static long _peak_compilation_time;
225
226 static volatile jint _print_compilation_warning;
227
228 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS);
229 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count);
230 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
231 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
232 static bool is_compile_blocking();
233 static void preload_classes (methodHandle method, TRAPS);
234
235 static CompileTask* create_compile_task(CompileQueue* queue,
236 int compile_id,
237 methodHandle method,
238 int osr_bci,
239 int comp_level,
240 methodHandle hot_method,
241 int hot_count,
242 const char* comment,
243 bool blocking);
244 static void wait_for_completion(CompileTask* task);
245
246 static void invoke_compiler_on_method(CompileTask* task);
247 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
248 static void push_jni_handle_block();
249 static void pop_jni_handle_block();
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
266 static DirectivesStack* dirstack();
267 static void set_dirstack(DirectivesStack* stack);
268
269 enum {
270 // The entry bci used for non-OSR compilations.
271 standard_entry_bci = InvocationEntryBci
272 };
273
274 static AbstractCompiler* compiler(int comp_level) {
275 if (is_c2_compile(comp_level)) return _compilers[1]; // C2
276 if (is_c1_compile(comp_level)) return _compilers[0]; // C1
277 return NULL;
278 }
279
280 static bool compilation_is_in_queue(methodHandle method);
281 static void print_compile_queues(outputStream* st);
282 static void print_directives(outputStream* st);
283 static int queue_size(int comp_level) {
284 CompileQueue *q = compile_queue(comp_level);
285 return q != NULL ? q->size() : 0;
286 }
287 static void compilation_init();
288 static void init_compiler_thread_log();
289 static nmethod* compile_method(methodHandle method,
290 int osr_bci,
291 int comp_level,
292 methodHandle hot_method,
293 int hot_count,
294 const char* comment, Thread* thread);
295
296 static void compiler_thread_loop();
297 static uint get_compilation_id() { return _compilation_id; }
298
299 // Set _should_block.
300 // Call this from the VM, with Threads_lock held and a safepoint requested.
301 static void set_should_block();
302
303 // Call this from the compiler at convenient points, to poll for _should_block.
304 static void maybe_block();
305
306 enum {
307 // Flags for toggling compiler activity
308 stop_compilation = 0,
309 run_compilation = 1,
310 shutdown_compilaton = 2
311 };
312
313 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; }
314 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
315 static bool set_should_compile_new_jobs(jint new_state) {
316 // Return success if the current caller set it
317 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
318 return (old == (1-new_state));
319 }
320
321 static void disable_compilation_forever() {
322 UseCompiler = false;
323 AlwaysCompileLoopMethods = false;
324 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs);
325 }
326
327 static bool is_compilation_disabled_forever() {
328 return _should_compile_new_jobs == shutdown_compilaton;
329 }
330 static void handle_full_code_cache(int code_blob_type);
331 // Ensures that warning is only printed once.
332 static bool should_print_compiler_warning() {
333 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0);
334 return old == 0;
335 }
336 // Return total compilation ticks
337 static jlong total_compilation_ticks() {
338 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
339 }
340
341 // Redefine Classes support
342 static void mark_on_stack();
343
344 // Print a detailed accounting of compilation time
345 static void print_times();
346
347 // Debugging output for failure
348 static void print_last_compile();
349
350 static void print_compiler_threads_on(outputStream* st);
351
352 // compiler name for debugging
353 static const char* compiler_name(int comp_level);
354
355 static int get_total_compile_count() { return _total_compile_count; }
356 static int get_total_bailout_count() { return _total_bailout_count; }
357 static int get_total_invalidated_count() { return _total_invalidated_count; }
358 static int get_total_native_compile_count() { return _total_native_compile_count; }
359 static int get_total_osr_compile_count() { return _total_osr_compile_count; }
360 static int get_total_standard_compile_count() { return _total_standard_compile_count; }
361 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
362 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
363 static int get_sum_nmethod_size() { return _sum_nmethod_size;}
364 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
365 static long get_peak_compilation_time() { return _peak_compilation_time; }
366 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
367
368 // Log that compilation profiling is skipped because metaspace is full.
369 static void log_metaspace_failure();
370 };
371
372 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP