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src/share/vm/compiler/compileBroker.hpp@7301840ea20e (annotated)

src/share/vm/compiler/compileBroker.hpp

Tue, 11 Mar 2014 15:06:34 +0400

author

vlivanov

date

Tue, 11 Mar 2014 15:06:34 +0400

changeset 7179

7301840ea20e

parent 6220

7b9127b17b7a

child 7183

dd89808e49ba

permissions

-rw-r--r--

8023461: Thread holding lock at safepoint that vm can block on: MethodCompileQueue_lock
Reviewed-by: kvn, iveresov

duke@435	1	/*
sla@5237	2	* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_COMPILER_COMPILEBROKER_HPP
stefank@2314	26	#define SHARE_VM_COMPILER_COMPILEBROKER_HPP
stefank@2314	27
stefank@2314	28	#include "ci/compilerInterface.hpp"
stefank@2314	29	#include "compiler/abstractCompiler.hpp"
stefank@2314	30	#include "runtime/perfData.hpp"
stefank@2314	31
duke@435	32	class nmethod;
duke@435	33	class nmethodLocker;
duke@435	34
duke@435	35	// CompileTask
duke@435	36	//
duke@435	37	// An entry in the compile queue. It represents a pending or current
duke@435	38	// compilation.
zgu@3900	39	class CompileTask : public CHeapObj<mtCompiler> {
never@3138	40	friend class VMStructs;
never@3138	41
duke@435	42	private:
duke@435	43	Monitor* _lock;
duke@435	44	uint _compile_id;
coleenp@4037	45	Method* _method;
coleenp@4304	46	jobject _method_holder;
duke@435	47	int _osr_bci;
duke@435	48	bool _is_complete;
duke@435	49	bool _is_success;
duke@435	50	bool _is_blocking;
duke@435	51	int _comp_level;
duke@435	52	int _num_inlined_bytecodes;
duke@435	53	nmethodLocker* _code_handle; // holder of eventual result
iveresov@2138	54	CompileTask* _next, *_prev;
duke@435	55
duke@435	56	// Fields used for logging why the compilation was initiated:
duke@435	57	jlong _time_queued; // in units of os::elapsed_counter()
coleenp@4037	58	Method* _hot_method; // which method actually triggered this task
coleenp@4304	59	jobject _hot_method_holder;
duke@435	60	int _hot_count; // information about its invocation counter
duke@435	61	const char* _comment; // more info about the task
duke@435	62
duke@435	63	public:
duke@435	64	CompileTask() {
duke@435	65	_lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock");
duke@435	66	}
duke@435	67
duke@435	68	void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level,
duke@435	69	methodHandle hot_method, int hot_count, const char* comment,
duke@435	70	bool is_blocking);
duke@435	71
duke@435	72	void free();
duke@435	73
duke@435	74	int compile_id() const { return _compile_id; }
coleenp@4037	75	Method* method() const { return _method; }
duke@435	76	int osr_bci() const { return _osr_bci; }
duke@435	77	bool is_complete() const { return _is_complete; }
duke@435	78	bool is_blocking() const { return _is_blocking; }
duke@435	79	bool is_success() const { return _is_success; }
duke@435	80
duke@435	81	nmethodLocker* code_handle() const { return _code_handle; }
duke@435	82	void set_code_handle(nmethodLocker* l) { _code_handle = l; }
duke@435	83	nmethod* code() const; // _code_handle->code()
duke@435	84	void set_code(nmethod* nm); // _code_handle->set_code(nm)
duke@435	85
duke@435	86	Monitor* lock() const { return _lock; }
duke@435	87
duke@435	88	void mark_complete() { _is_complete = true; }
duke@435	89	void mark_success() { _is_success = true; }
duke@435	90
duke@435	91	int comp_level() { return _comp_level;}
duke@435	92	void set_comp_level(int comp_level) { _comp_level = comp_level;}
duke@435	93
duke@435	94	int num_inlined_bytecodes() const { return _num_inlined_bytecodes; }
duke@435	95	void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; }
duke@435	96
duke@435	97	CompileTask* next() const { return _next; }
duke@435	98	void set_next(CompileTask* next) { _next = next; }
iveresov@2138	99	CompileTask* prev() const { return _prev; }
iveresov@2138	100	void set_prev(CompileTask* prev) { _prev = prev; }
duke@435	101
twisti@2687	102	private:
coleenp@4037	103	static void print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
never@3499	104	bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false,
never@3499	105	const char* msg = NULL, bool short_form = false);
twisti@2687	106
twisti@2687	107	public:
twisti@4111	108	void print_compilation(outputStream* st = tty, const char* msg = NULL, bool short_form = false);
twisti@3969	109	static void print_compilation(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false) {
never@3499	110	print_compilation_impl(st, nm->method(), nm->compile_id(), nm->comp_level(),
never@3499	111	nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false,
twisti@3969	112	msg, short_form);
twisti@2687	113	}
twisti@2687	114
twisti@2687	115	static void print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL);
twisti@2687	116	static void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
twisti@2687	117	print_inlining(tty, method, inline_level, bci, msg);
twisti@2687	118	}
twisti@2687	119
coleenp@4037	120	// Redefine Classes support
coleenp@4037	121	void mark_on_stack();
coleenp@4037	122
twisti@2687	123	static void print_inline_indent(int inline_level, outputStream* st = tty);
twisti@2687	124
duke@435	125	void print();
duke@435	126	void print_line();
twisti@2687	127	void print_line_on_error(outputStream* st, char* buf, int buflen);
iveresov@2138	128
duke@435	129	void log_task(xmlStream* log);
duke@435	130	void log_task_queued();
duke@435	131	void log_task_start(CompileLog* log);
duke@435	132	void log_task_done(CompileLog* log);
duke@435	133	};
duke@435	134
duke@435	135	// CompilerCounters
duke@435	136	//
duke@435	137	// Per Compiler Performance Counters.
duke@435	138	//
zgu@3900	139	class CompilerCounters : public CHeapObj<mtCompiler> {
duke@435	140
duke@435	141	public:
duke@435	142	enum {
duke@435	143	cmname_buffer_length = 160
duke@435	144	};
duke@435	145
duke@435	146	private:
duke@435	147
duke@435	148	char _current_method[cmname_buffer_length];
duke@435	149	PerfStringVariable* _perf_current_method;
duke@435	150
duke@435	151	int _compile_type;
duke@435	152	PerfVariable* _perf_compile_type;
duke@435	153
duke@435	154	PerfCounter* _perf_time;
duke@435	155	PerfCounter* _perf_compiles;
duke@435	156
duke@435	157	public:
duke@435	158	CompilerCounters(const char* name, int instance, TRAPS);
duke@435	159
duke@435	160	// these methods should be called in a thread safe context
duke@435	161
duke@435	162	void set_current_method(const char* method) {
duke@435	163	strncpy(_current_method, method, (size_t)cmname_buffer_length);
duke@435	164	if (UsePerfData) _perf_current_method->set_value(method);
duke@435	165	}
duke@435	166
duke@435	167	char* current_method() { return _current_method; }
duke@435	168
duke@435	169	void set_compile_type(int compile_type) {
duke@435	170	_compile_type = compile_type;
duke@435	171	if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type);
duke@435	172	}
duke@435	173
duke@435	174	int compile_type() { return _compile_type; }
duke@435	175
duke@435	176	PerfCounter* time_counter() { return _perf_time; }
duke@435	177	PerfCounter* compile_counter() { return _perf_compiles; }
duke@435	178	};
duke@435	179
duke@435	180	// CompileQueue
duke@435	181	//
duke@435	182	// A list of CompileTasks.
zgu@3900	183	class CompileQueue : public CHeapObj<mtCompiler> {
duke@435	184	private:
duke@435	185	const char* _name;
duke@435	186	Monitor* _lock;
duke@435	187
duke@435	188	CompileTask* _first;
duke@435	189	CompileTask* _last;
duke@435	190
vlivanov@7179	191	CompileTask* _first_stale;
vlivanov@7179	192
iveresov@2138	193	int _size;
vlivanov@7179	194
vlivanov@7179	195	void purge_stale_tasks();
duke@435	196	public:
duke@435	197	CompileQueue(const char* name, Monitor* lock) {
duke@435	198	_name = name;
duke@435	199	_lock = lock;
duke@435	200	_first = NULL;
duke@435	201	_last = NULL;
iveresov@2138	202	_size = 0;
vlivanov@7179	203	_first_stale = NULL;
duke@435	204	}
duke@435	205
duke@435	206	const char* name() const { return _name; }
duke@435	207	Monitor* lock() const { return _lock; }
duke@435	208
duke@435	209	void add(CompileTask* task);
iveresov@2138	210	void remove(CompileTask* task);
vlivanov@7179	211	void remove_and_mark_stale(CompileTask* task);
iveresov@2138	212	CompileTask* first() { return _first; }
iveresov@2138	213	CompileTask* last() { return _last; }
duke@435	214
duke@435	215	CompileTask* get();
duke@435	216
duke@435	217	bool is_empty() const { return _first == NULL; }
iveresov@2138	218	int size() const { return _size; }
duke@435	219
vlivanov@7179	220
coleenp@4037	221	// Redefine Classes support
coleenp@4037	222	void mark_on_stack();
anoll@5919	223	void delete_all();
anoll@5919	224	void print();
coleenp@4037	225
anoll@5919	226	~CompileQueue() {
anoll@5919	227	assert (is_empty(), " Compile Queue must be empty");
anoll@5919	228	}
duke@435	229	};
duke@435	230
iveresov@2138	231	// CompileTaskWrapper
iveresov@2138	232	//
iveresov@2138	233	// Assign this task to the current thread. Deallocate the task
iveresov@2138	234	// when the compilation is complete.
iveresov@2138	235	class CompileTaskWrapper : StackObj {
iveresov@2138	236	public:
iveresov@2138	237	CompileTaskWrapper(CompileTask* task);
iveresov@2138	238	~CompileTaskWrapper();
iveresov@2138	239	};
iveresov@2138	240
duke@435	241
duke@435	242	// Compilation
duke@435	243	//
duke@435	244	// The broker for all compilation requests.
duke@435	245	class CompileBroker: AllStatic {
duke@435	246	friend class Threads;
duke@435	247	friend class CompileTaskWrapper;
duke@435	248
duke@435	249	public:
duke@435	250	enum {
duke@435	251	name_buffer_length = 100
duke@435	252	};
duke@435	253
duke@435	254	// Compile type Information for print_last_compile() and CompilerCounters
duke@435	255	enum { no_compile, normal_compile, osr_compile, native_compile };
anoll@6220	256	static int assign_compile_id (methodHandle method, int osr_bci);
anoll@6220	257
duke@435	258
duke@435	259	private:
duke@435	260	static bool _initialized;
duke@435	261	static volatile bool _should_block;
duke@435	262
kvn@1637	263	// This flag can be used to stop compilation or turn it back on
kvn@1637	264	static volatile jint _should_compile_new_jobs;
kvn@1637	265
duke@435	266	// The installed compiler(s)
duke@435	267	static AbstractCompiler* _compilers[2];
duke@435	268
duke@435	269	// These counters are used for assigning id's to each compilation
anoll@6220	270	static volatile jint _compilation_id;
anoll@6220	271	static volatile jint _osr_compilation_id;
duke@435	272
duke@435	273	static int _last_compile_type;
duke@435	274	static int _last_compile_level;
duke@435	275	static char _last_method_compiled[name_buffer_length];
duke@435	276
iveresov@2138	277	static CompileQueue* _c2_method_queue;
iveresov@2138	278	static CompileQueue* _c1_method_queue;
duke@435	279	static CompileTask* _task_free_list;
duke@435	280
anoll@5919	281	static GrowableArray<CompilerThread*>* _compiler_threads;
duke@435	282
duke@435	283	// performance counters
duke@435	284	static PerfCounter* _perf_total_compilation;
duke@435	285	static PerfCounter* _perf_native_compilation;
duke@435	286	static PerfCounter* _perf_osr_compilation;
duke@435	287	static PerfCounter* _perf_standard_compilation;
duke@435	288
duke@435	289	static PerfCounter* _perf_total_bailout_count;
duke@435	290	static PerfCounter* _perf_total_invalidated_count;
duke@435	291	static PerfCounter* _perf_total_compile_count;
duke@435	292	static PerfCounter* _perf_total_native_compile_count;
duke@435	293	static PerfCounter* _perf_total_osr_compile_count;
duke@435	294	static PerfCounter* _perf_total_standard_compile_count;
duke@435	295
duke@435	296	static PerfCounter* _perf_sum_osr_bytes_compiled;
duke@435	297	static PerfCounter* _perf_sum_standard_bytes_compiled;
duke@435	298	static PerfCounter* _perf_sum_nmethod_size;
duke@435	299	static PerfCounter* _perf_sum_nmethod_code_size;
duke@435	300
duke@435	301	static PerfStringVariable* _perf_last_method;
duke@435	302	static PerfStringVariable* _perf_last_failed_method;
duke@435	303	static PerfStringVariable* _perf_last_invalidated_method;
duke@435	304	static PerfVariable* _perf_last_compile_type;
duke@435	305	static PerfVariable* _perf_last_compile_size;
duke@435	306	static PerfVariable* _perf_last_failed_type;
duke@435	307	static PerfVariable* _perf_last_invalidated_type;
duke@435	308
duke@435	309	// Timers and counters for generating statistics
duke@435	310	static elapsedTimer _t_total_compilation;
duke@435	311	static elapsedTimer _t_osr_compilation;
duke@435	312	static elapsedTimer _t_standard_compilation;
duke@435	313
sla@5237	314	static int _total_compile_count;
duke@435	315	static int _total_bailout_count;
duke@435	316	static int _total_invalidated_count;
duke@435	317	static int _total_native_compile_count;
duke@435	318	static int _total_osr_compile_count;
duke@435	319	static int _total_standard_compile_count;
duke@435	320	static int _sum_osr_bytes_compiled;
duke@435	321	static int _sum_standard_bytes_compiled;
duke@435	322	static int _sum_nmethod_size;
duke@435	323	static int _sum_nmethod_code_size;
sla@5237	324	static long _peak_compilation_time;
duke@435	325
anoll@6099	326	static volatile jint _print_compilation_warning;
anoll@6099	327
anoll@5919	328	static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, TRAPS);
iveresov@2138	329	static void init_compiler_threads(int c1_compiler_count, int c2_compiler_count);
duke@435	330	static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
duke@435	331	static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
duke@435	332	static bool is_compile_blocking (methodHandle method, int osr_bci);
duke@435	333	static void preload_classes (methodHandle method, TRAPS);
duke@435	334
duke@435	335	static CompileTask* create_compile_task(CompileQueue* queue,
duke@435	336	int compile_id,
duke@435	337	methodHandle method,
duke@435	338	int osr_bci,
duke@435	339	int comp_level,
duke@435	340	methodHandle hot_method,
duke@435	341	int hot_count,
duke@435	342	const char* comment,
duke@435	343	bool blocking);
duke@435	344	static CompileTask* allocate_task();
duke@435	345	static void free_task(CompileTask* task);
duke@435	346	static void wait_for_completion(CompileTask* task);
duke@435	347
duke@435	348	static void invoke_compiler_on_method(CompileTask* task);
duke@435	349	static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
duke@435	350	static void push_jni_handle_block();
duke@435	351	static void pop_jni_handle_block();
duke@435	352	static bool check_break_at(methodHandle method, int compile_id, bool is_osr);
duke@435	353	static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
duke@435	354
duke@435	355	static void compile_method_base(methodHandle method,
duke@435	356	int osr_bci,
duke@435	357	int comp_level,
duke@435	358	methodHandle hot_method,
duke@435	359	int hot_count,
duke@435	360	const char* comment,
iveresov@3452	361	Thread* thread);
iveresov@2138	362	static CompileQueue* compile_queue(int comp_level) {
iveresov@2138	363	if (is_c2_compile(comp_level)) return _c2_method_queue;
iveresov@2138	364	if (is_c1_compile(comp_level)) return _c1_method_queue;
iveresov@2138	365	return NULL;
iveresov@2138	366	}
anoll@5919	367	static bool init_compiler_runtime();
anoll@5919	368	static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread);
anoll@5919	369
duke@435	370	public:
duke@435	371	enum {
duke@435	372	// The entry bci used for non-OSR compilations.
duke@435	373	standard_entry_bci = InvocationEntryBci
duke@435	374	};
duke@435	375
iveresov@2138	376	static AbstractCompiler* compiler(int comp_level) {
iveresov@2138	377	if (is_c2_compile(comp_level)) return _compilers[1]; // C2
iveresov@2138	378	if (is_c1_compile(comp_level)) return _compilers[0]; // C1
iveresov@2138	379	return NULL;
duke@435	380	}
duke@435	381
iveresov@2138	382	static bool compilation_is_in_queue(methodHandle method, int osr_bci);
iveresov@2138	383	static int queue_size(int comp_level) {
iveresov@2138	384	CompileQueue *q = compile_queue(comp_level);
iveresov@2138	385	return q != NULL ? q->size() : 0;
iveresov@2138	386	}
duke@435	387	static void compilation_init();
duke@435	388	static void init_compiler_thread_log();
iveresov@2138	389	static nmethod* compile_method(methodHandle method,
iveresov@2138	390	int osr_bci,
iveresov@2138	391	int comp_level,
iveresov@2138	392	methodHandle hot_method,
iveresov@2138	393	int hot_count,
iveresov@3452	394	const char* comment, Thread* thread);
duke@435	395
duke@435	396	static void compiler_thread_loop();
kvn@1637	397	static uint get_compilation_id() { return _compilation_id; }
duke@435	398
duke@435	399	// Set _should_block.
duke@435	400	// Call this from the VM, with Threads_lock held and a safepoint requested.
duke@435	401	static void set_should_block();
duke@435	402
duke@435	403	// Call this from the compiler at convenient points, to poll for _should_block.
duke@435	404	static void maybe_block();
duke@435	405
kvn@1637	406	enum {
kvn@1637	407	// Flags for toggling compiler activity
anoll@5919	408	stop_compilation = 0,
anoll@5919	409	run_compilation = 1,
anoll@5919	410	shutdown_compilaton = 2
kvn@1637	411	};
kvn@1637	412
kvn@1637	413	static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
kvn@1637	414	static bool set_should_compile_new_jobs(jint new_state) {
kvn@1637	415	// Return success if the current caller set it
kvn@1637	416	jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
kvn@1637	417	return (old == (1-new_state));
kvn@1637	418	}
anoll@5919	419
anoll@5919	420	static void disable_compilation_forever() {
anoll@5919	421	UseCompiler = false;
anoll@5919	422	AlwaysCompileLoopMethods = false;
anoll@5919	423	Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs);
anoll@5919	424	}
anoll@5919	425
anoll@5919	426	static bool is_compilation_disabled_forever() {
anoll@5919	427	return _should_compile_new_jobs == shutdown_compilaton;
anoll@5919	428	}
kvn@1637	429	static void handle_full_code_cache();
anoll@6099	430	// Ensures that warning is only printed once.
anoll@6099	431	static bool should_print_compiler_warning() {
anoll@6099	432	jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0);
anoll@6099	433	return old == 0;
anoll@6099	434	}
duke@435	435	// Return total compilation ticks
duke@435	436	static jlong total_compilation_ticks() {
duke@435	437	return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
duke@435	438	}
duke@435	439
coleenp@4037	440	// Redefine Classes support
coleenp@4037	441	static void mark_on_stack();
coleenp@4037	442
duke@435	443	// Print a detailed accounting of compilation time
duke@435	444	static void print_times();
duke@435	445
duke@435	446	// Debugging output for failure
duke@435	447	static void print_last_compile();
duke@435	448
duke@435	449	static void print_compiler_threads_on(outputStream* st);
morris@4771	450
morris@4771	451	// compiler name for debugging
morris@4771	452	static const char* compiler_name(int comp_level);
sla@5237	453
sla@5237	454	static int get_total_compile_count() { return _total_compile_count; }
sla@5237	455	static int get_total_bailout_count() { return _total_bailout_count; }
sla@5237	456	static int get_total_invalidated_count() { return _total_invalidated_count; }
sla@5237	457	static int get_total_native_compile_count() { return _total_native_compile_count; }
sla@5237	458	static int get_total_osr_compile_count() { return _total_osr_compile_count; }
sla@5237	459	static int get_total_standard_compile_count() { return _total_standard_compile_count; }
sla@5237	460	static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
sla@5237	461	static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
sla@5237	462	static int get_sum_nmethod_size() { return _sum_nmethod_size;}
sla@5237	463	static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
sla@5237	464	static long get_peak_compilation_time() { return _peak_compilation_time; }
sla@5237	465	static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
duke@435	466	};
stefank@2314	467
stefank@2314	468	#endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP