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 int _compile_type;
51
52 public:
53 CompilerCounters();
54
55 // these methods should be called in a thread safe context
56
57 void set_current_method(const char* method) {
58 strncpy(_current_method, method, (size_t)cmname_buffer_length-1);
59 _current_method[cmname_buffer_length-1] = '\0';
60 }
61
62 char* current_method() { return _current_method; }
63
64 void set_compile_type(int compile_type) {
65 _compile_type = compile_type;
66 }
67
68 int compile_type() { return _compile_type; }
69
70 };
71
72 // CompileQueue
73 //
74 // A list of CompileTasks.
75 class CompileQueue : public CHeapObj<mtCompiler> {
76 private:
77 const char* _name;
78
79 CompileTask* _first;
80 CompileTask* _last;
81
82 CompileTask* _first_stale;
83
84 int _size;
85
86 void purge_stale_tasks();
87 public:
88 CompileQueue(const char* name) {
89 _name = name;
90 _first = NULL;
91 _last = NULL;
92 _size = 0;
93 _first_stale = NULL;
94 }
95
96 const char* name() const { return _name; }
97
98 void add(CompileTask* task);
99 void remove(CompileTask* task);
100 void remove_and_mark_stale(CompileTask* task);
101 CompileTask* first() { return _first; }
102 CompileTask* last() { return _last; }
103
104 CompileTask* get();
105
106 bool is_empty() const { return _first == NULL; }
107 int size() const { return _size; }
108
109
110 // Redefine Classes support
111 void mark_on_stack();
112 void free_all();
113 void print_tty();
114 void print(outputStream* st = tty);
115
116 ~CompileQueue() {
117 assert (is_empty(), " Compile Queue must be empty");
118 }
119 };
120
121 // CompileTaskWrapper
122 //
123 // Assign this task to the current thread. Deallocate the task
124 // when the compilation is complete.
125 class CompileTaskWrapper : StackObj {
126 public:
127 CompileTaskWrapper(CompileTask* task);
128 ~CompileTaskWrapper();
129 };
130
131
132 // Compilation
133 //
134 // The broker for all compilation requests.
135 class CompileBroker: AllStatic {
136 friend class Threads;
137 friend class CompileTaskWrapper;
138
139 public:
140 enum {
141 name_buffer_length = 100
142 };
143
144 // Compile type Information for print_last_compile() and CompilerCounters
145 enum { no_compile, normal_compile, osr_compile, native_compile };
146 static int assign_compile_id (methodHandle method, int osr_bci);
147
148
149 private:
150 static bool _initialized;
151 static volatile bool _should_block;
152
153 // This flag can be used to stop compilation or turn it back on
154 static volatile jint _should_compile_new_jobs;
155
156 // The installed compiler(s)
157 static AbstractCompiler* _compilers[2];
158
159 // These counters are used for assigning id's to each compilation
160 static volatile jint _compilation_id;
161 static volatile jint _osr_compilation_id;
162
163 static int _last_compile_type;
164 static int _last_compile_level;
165 static char _last_method_compiled[name_buffer_length];
166
167 static CompileQueue* _c2_compile_queue;
168 static CompileQueue* _c1_compile_queue;
169
170 // performance counters
171 static PerfCounter* _perf_total_compilation;
172 static PerfCounter* _perf_native_compilation;
173 static PerfCounter* _perf_osr_compilation;
174 static PerfCounter* _perf_standard_compilation;
175
176 static PerfCounter* _perf_total_bailout_count;
177 static PerfCounter* _perf_total_invalidated_count;
178 static PerfCounter* _perf_total_compile_count;
179 static PerfCounter* _perf_total_native_compile_count;
180 static PerfCounter* _perf_total_osr_compile_count;
181 static PerfCounter* _perf_total_standard_compile_count;
182
183 static PerfCounter* _perf_sum_osr_bytes_compiled;
184 static PerfCounter* _perf_sum_standard_bytes_compiled;
185 static PerfCounter* _perf_sum_nmethod_size;
186 static PerfCounter* _perf_sum_nmethod_code_size;
187
188 static PerfStringVariable* _perf_last_method;
189 static PerfStringVariable* _perf_last_failed_method;
190 static PerfStringVariable* _perf_last_invalidated_method;
191 static PerfVariable* _perf_last_compile_type;
192 static PerfVariable* _perf_last_compile_size;
193 static PerfVariable* _perf_last_failed_type;
194 static PerfVariable* _perf_last_invalidated_type;
195
196 // Timers and counters for generating statistics
197 static elapsedTimer _t_total_compilation;
198 static elapsedTimer _t_osr_compilation;
199 static elapsedTimer _t_standard_compilation;
200 static elapsedTimer _t_invalidated_compilation;
201 static elapsedTimer _t_bailedout_compilation;
202
203 static int _total_compile_count;
204 static int _total_bailout_count;
205 static int _total_invalidated_count;
206 static int _total_native_compile_count;
207 static int _total_osr_compile_count;
208 static int _total_standard_compile_count;
209 static int _sum_osr_bytes_compiled;
210 static int _sum_standard_bytes_compiled;
211 static int _sum_nmethod_size;
212 static int _sum_nmethod_code_size;
213 static long _peak_compilation_time;
214
215 static volatile jint _print_compilation_warning;
216
217 static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS);
218 static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count);
219 static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
220 static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
221 static bool is_compile_blocking();
222 static void preload_classes (methodHandle method, TRAPS);
223
224 static CompileTask* create_compile_task(CompileQueue* queue,
225 int compile_id,
226 methodHandle method,
227 int osr_bci,
228 int comp_level,
229 methodHandle hot_method,
230 int hot_count,
231 const char* comment,
232 bool blocking);
233 static void wait_for_completion(CompileTask* task);
234
235 static void invoke_compiler_on_method(CompileTask* task);
236 static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
237 static void push_jni_handle_block();
238 static void pop_jni_handle_block();
239 static bool check_break_at(methodHandle method, int compile_id, bool is_osr);
240 static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
241
242 static void compile_method_base(methodHandle method,
243 int osr_bci,
244 int comp_level,
245 methodHandle hot_method,
246 int hot_count,
247 const char* comment,
248 Thread* thread);
249
250 static CompileQueue* compile_queue(int comp_level);
251 static bool init_compiler_runtime();
252 static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread);
253
254 public:
255 enum {
256 // The entry bci used for non-OSR compilations.
257 standard_entry_bci = InvocationEntryBci
258 };
259
260 static AbstractCompiler* compiler(int comp_level) {
261 if (is_c2_compile(comp_level)) return _compilers[1]; // C2
262 if (is_c1_compile(comp_level)) return _compilers[0]; // C1
263 return NULL;
264 }
265
266 static bool compilation_is_in_queue(methodHandle method);
267 static void print_compile_queues(outputStream* st);
268 static int queue_size(int comp_level) {
269 CompileQueue *q = compile_queue(comp_level);
270 return q != NULL ? q->size() : 0;
271 }
272 static void compilation_init();
273 static void init_compiler_thread_log();
274 static nmethod* compile_method(methodHandle method,
275 int osr_bci,
276 int comp_level,
277 methodHandle hot_method,
278 int hot_count,
279 const char* comment, Thread* thread);
280
281 static void compiler_thread_loop();
282 static uint get_compilation_id() { return _compilation_id; }
283
284 // Set _should_block.
285 // Call this from the VM, with Threads_lock held and a safepoint requested.
286 static void set_should_block();
287
288 // Call this from the compiler at convenient points, to poll for _should_block.
289 static void maybe_block();
290
291 enum {
292 // Flags for toggling compiler activity
293 stop_compilation = 0,
294 run_compilation = 1,
295 shutdown_compilaton = 2
296 };
297
298 static jint get_compilation_activity_mode() { return _should_compile_new_jobs; }
299 static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
300 static bool set_should_compile_new_jobs(jint new_state) {
301 // Return success if the current caller set it
302 jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
303 return (old == (1-new_state));
304 }
305
306 static void disable_compilation_forever() {
307 UseCompiler = false;
308 AlwaysCompileLoopMethods = false;
309 Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs);
310 }
311
312 static bool is_compilation_disabled_forever() {
313 return _should_compile_new_jobs == shutdown_compilaton;
314 }
315 static void handle_full_code_cache(int code_blob_type);
316 // Ensures that warning is only printed once.
317 static bool should_print_compiler_warning() {
318 jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0);
319 return old == 0;
320 }
321 // Return total compilation ticks
322 static jlong total_compilation_ticks() {
323 return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
324 }
325
326 // Redefine Classes support
327 static void mark_on_stack();
328
329 // Print a detailed accounting of compilation time
330 static void print_times();
331
332 // Debugging output for failure
333 static void print_last_compile();
334
335 static void print_compiler_threads_on(outputStream* st);
336
337 // compiler name for debugging
338 static const char* compiler_name(int comp_level);
339
340 static int get_total_compile_count() { return _total_compile_count; }
341 static int get_total_bailout_count() { return _total_bailout_count; }
342 static int get_total_invalidated_count() { return _total_invalidated_count; }
343 static int get_total_native_compile_count() { return _total_native_compile_count; }
344 static int get_total_osr_compile_count() { return _total_osr_compile_count; }
345 static int get_total_standard_compile_count() { return _total_standard_compile_count; }
346 static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
347 static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
348 static int get_sum_nmethod_size() { return _sum_nmethod_size;}
349 static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
350 static long get_peak_compilation_time() { return _peak_compilation_time; }
351 static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
352
353 // Log that compilation profiling is skipped because metaspace is full.
354 static void log_metaspace_failure();
355 };
356
357 #endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP