1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/runtime/fprofiler.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,319 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_RUNTIME_FPROFILER_HPP
1.29 +#define SHARE_VM_RUNTIME_FPROFILER_HPP
1.30 +
1.31 +#include "utilities/macros.hpp"
1.32 +#include "runtime/timer.hpp"
1.33 +
1.34 +// a simple flat profiler for Java
1.35 +
1.36 +
1.37 +// Forward declaration of classes defined in this header file
1.38 +class ThreadProfiler;
1.39 +class ThreadProfilerMark;
1.40 +class FlatProfiler;
1.41 +class IntervalData;
1.42 +
1.43 +// Declarations of classes defined only in the implementation.
1.44 +class ProfilerNode;
1.45 +class FlatProfilerTask;
1.46 +
1.47 +enum TickPosition {
1.48 + tp_code,
1.49 + tp_native
1.50 +};
1.51 +
1.52 +// One of these guys is constructed as we enter interesting regions
1.53 +// and destructed as we exit the region. While we are in the region
1.54 +// ticks are allotted to the region.
1.55 +class ThreadProfilerMark: public StackObj {
1.56 +public:
1.57 + // For now, the only thread-specific region is the class loader.
1.58 + enum Region { noRegion, classLoaderRegion, extraRegion, maxRegion };
1.59 +
1.60 + ThreadProfilerMark(Region) NOT_FPROF_RETURN;
1.61 + ~ThreadProfilerMark() NOT_FPROF_RETURN;
1.62 +
1.63 +private:
1.64 + ThreadProfiler* _pp;
1.65 + Region _r;
1.66 +};
1.67 +
1.68 +#if INCLUDE_FPROF
1.69 +
1.70 +class IntervalData VALUE_OBJ_CLASS_SPEC {
1.71 + // Just to keep these things all together
1.72 +private:
1.73 + int _interpreted;
1.74 + int _compiled;
1.75 + int _native;
1.76 + int _compiling;
1.77 +public:
1.78 + int interpreted() {
1.79 + return _interpreted;
1.80 + }
1.81 + int compiled() {
1.82 + return _compiled;
1.83 + }
1.84 + int native() {
1.85 + return _native;
1.86 + }
1.87 + int compiling() {
1.88 + return _compiling;
1.89 + }
1.90 + int total() {
1.91 + return (interpreted() + compiled() + native() + compiling());
1.92 + }
1.93 + void inc_interpreted() {
1.94 + _interpreted += 1;
1.95 + }
1.96 + void inc_compiled() {
1.97 + _compiled += 1;
1.98 + }
1.99 + void inc_native() {
1.100 + _native += 1;
1.101 + }
1.102 + void inc_compiling() {
1.103 + _compiling += 1;
1.104 + }
1.105 + void reset() {
1.106 + _interpreted = 0;
1.107 + _compiled = 0;
1.108 + _native = 0;
1.109 + _compiling = 0;
1.110 + }
1.111 + static void print_header(outputStream* st);
1.112 + void print_data(outputStream* st);
1.113 +};
1.114 +#endif // INCLUDE_FPROF
1.115 +
1.116 +class ThreadProfiler: public CHeapObj<mtInternal> {
1.117 +public:
1.118 + ThreadProfiler() NOT_FPROF_RETURN;
1.119 + ~ThreadProfiler() NOT_FPROF_RETURN;
1.120 +
1.121 + // Resets the profiler
1.122 + void reset() NOT_FPROF_RETURN;
1.123 +
1.124 + // Activates the profiler for a certain thread
1.125 + void engage() NOT_FPROF_RETURN;
1.126 +
1.127 + // Deactivates the profiler
1.128 + void disengage() NOT_FPROF_RETURN;
1.129 +
1.130 + // Prints the collected profiling information
1.131 + void print(const char* thread_name) NOT_FPROF_RETURN;
1.132 +
1.133 + // Garbage Collection Support
1.134 + void oops_do(OopClosure* f) NOT_FPROF_RETURN;
1.135 +
1.136 +#if INCLUDE_FPROF
1.137 +private:
1.138 + // for recording ticks.
1.139 + friend class ProfilerNode;
1.140 + char* area_bottom; // preallocated area for pnodes
1.141 + char* area_top;
1.142 + char* area_limit;
1.143 + static int table_size;
1.144 + ProfilerNode** table;
1.145 +
1.146 +private:
1.147 + void record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks);
1.148 + void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where);
1.149 + void interpreted_update(Method* method, TickPosition where);
1.150 + void compiled_update (Method* method, TickPosition where);
1.151 + void stub_update (Method* method, const char* name, TickPosition where);
1.152 + void adapter_update (TickPosition where);
1.153 +
1.154 + void runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where);
1.155 + void unknown_compiled_update (const CodeBlob* cb, TickPosition where);
1.156 +
1.157 + void vm_update (TickPosition where);
1.158 + void vm_update (const char* name, TickPosition where);
1.159 +
1.160 + void record_tick_for_running_frame(JavaThread* thread, frame fr);
1.161 + void record_tick_for_calling_frame(JavaThread* thread, frame fr);
1.162 +
1.163 + void initialize();
1.164 +
1.165 + static int entry(int value);
1.166 +
1.167 +
1.168 +private:
1.169 + friend class FlatProfiler;
1.170 + void record_tick(JavaThread* thread);
1.171 + bool engaged;
1.172 + // so we can do percentages for this thread, and quick checks for activity
1.173 + int thread_ticks;
1.174 + int compiler_ticks;
1.175 + int interpreter_ticks;
1.176 +
1.177 +public:
1.178 + void inc_thread_ticks() { thread_ticks += 1; }
1.179 +
1.180 +private:
1.181 + friend class ThreadProfilerMark;
1.182 + // counters for thread-specific regions
1.183 + bool region_flag[ThreadProfilerMark::maxRegion];
1.184 + int class_loader_ticks;
1.185 + int extra_ticks;
1.186 +
1.187 +private:
1.188 + // other thread-specific regions
1.189 + int blocked_ticks;
1.190 + enum UnknownTickSites {
1.191 + ut_null_method,
1.192 + ut_vtable_stubs,
1.193 + ut_running_frame,
1.194 + ut_calling_frame,
1.195 + ut_no_pc,
1.196 + ut_no_last_Java_frame,
1.197 + ut_unknown_thread_state,
1.198 + ut_end
1.199 + };
1.200 + int unknown_ticks_array[ut_end];
1.201 + int unknown_ticks() {
1.202 + int result = 0;
1.203 + for (int ut = 0; ut < ut_end; ut += 1) {
1.204 + result += unknown_ticks_array[ut];
1.205 + }
1.206 + return result;
1.207 + }
1.208 +
1.209 + elapsedTimer timer;
1.210 +
1.211 + // For interval timing
1.212 +private:
1.213 + IntervalData _interval_data;
1.214 + IntervalData interval_data() {
1.215 + return _interval_data;
1.216 + }
1.217 + IntervalData* interval_data_ref() {
1.218 + return &_interval_data;
1.219 + }
1.220 +#endif // INCLUDE_FPROF
1.221 +};
1.222 +
1.223 +class FlatProfiler: AllStatic {
1.224 +public:
1.225 + static void reset() NOT_FPROF_RETURN ;
1.226 + static void engage(JavaThread* mainThread, bool fullProfile) NOT_FPROF_RETURN ;
1.227 + static void disengage() NOT_FPROF_RETURN ;
1.228 + static void print(int unused) NOT_FPROF_RETURN ;
1.229 + static bool is_active() NOT_FPROF_RETURN_(false) ;
1.230 +
1.231 + // This is NULL if each thread has its own thread profiler,
1.232 + // else this is the single thread profiler used by all threads.
1.233 + // In particular it makes a difference during garbage collection,
1.234 + // where you only want to traverse each thread profiler once.
1.235 + static ThreadProfiler* get_thread_profiler() NOT_FPROF_RETURN_(NULL);
1.236 +
1.237 + // Garbage Collection Support
1.238 + static void oops_do(OopClosure* f) NOT_FPROF_RETURN ;
1.239 +
1.240 + // Support for disassembler to inspect the PCRecorder
1.241 +
1.242 + // Returns the start address for a given pc
1.243 + // NULL is returned if the PCRecorder is inactive
1.244 + static address bucket_start_for(address pc) NOT_FPROF_RETURN_(NULL);
1.245 +
1.246 + enum { MillisecsPerTick = 10 }; // ms per profiling ticks
1.247 +
1.248 + // Returns the number of ticks recorded for the bucket
1.249 + // pc belongs to.
1.250 + static int bucket_count_for(address pc) NOT_FPROF_RETURN_(0);
1.251 +
1.252 +#if INCLUDE_FPROF
1.253 +
1.254 + private:
1.255 + static bool full_profile() {
1.256 + return full_profile_flag;
1.257 + }
1.258 +
1.259 + friend class ThreadProfiler;
1.260 + // the following group of ticks cover everything that's not attributed to individual Java methods
1.261 + static int received_gc_ticks; // ticks during which gc was active
1.262 + static int vm_operation_ticks; // total ticks in vm_operations other than GC
1.263 + static int threads_lock_ticks; // the number of times we couldn't get the Threads_lock without blocking
1.264 + static int blocked_ticks; // ticks when the thread was blocked.
1.265 + static int class_loader_ticks; // total ticks in class loader
1.266 + static int extra_ticks; // total ticks an extra temporary measuring
1.267 + static int compiler_ticks; // total ticks in compilation
1.268 + static int interpreter_ticks; // ticks in unknown interpreted method
1.269 + static int deopt_ticks; // ticks in deoptimization
1.270 + static int unknown_ticks; // ticks that cannot be categorized
1.271 + static int received_ticks; // ticks that were received by task
1.272 + static int delivered_ticks; // ticks that were delivered by task
1.273 + static int non_method_ticks() {
1.274 + return
1.275 + ( received_gc_ticks
1.276 + + vm_operation_ticks
1.277 + + deopt_ticks
1.278 + + threads_lock_ticks
1.279 + + blocked_ticks
1.280 + + compiler_ticks
1.281 + + interpreter_ticks
1.282 + + unknown_ticks );
1.283 + }
1.284 + static elapsedTimer timer;
1.285 +
1.286 + // Counts of each of the byte codes
1.287 + static int* bytecode_ticks;
1.288 + static int* bytecode_ticks_stub;
1.289 + static void print_byte_code_statistics();
1.290 +
1.291 + // the ticks below are for continuous profiling (to adjust recompilation, etc.)
1.292 + static int all_ticks; // total count of ticks received so far
1.293 + static int all_int_ticks; // ticks in interpreter
1.294 + static int all_comp_ticks; // ticks in compiled code (+ native)
1.295 + static bool full_profile_flag; // collecting full profile?
1.296 +
1.297 + // to accumulate thread-specific data
1.298 + // if we aren't profiling individual threads.
1.299 + static ThreadProfiler* thread_profiler;
1.300 + static ThreadProfiler* vm_thread_profiler;
1.301 +
1.302 + static void allocate_table();
1.303 +
1.304 + // The task that periodically interrupts things.
1.305 + friend class FlatProfilerTask;
1.306 + static FlatProfilerTask* task;
1.307 + static void record_vm_operation();
1.308 + static void record_vm_tick();
1.309 + static void record_thread_ticks();
1.310 +
1.311 + // For interval analysis
1.312 + private:
1.313 + static int interval_ticks_previous; // delivered_ticks from the last interval
1.314 + static void interval_record_thread(ThreadProfiler* tp); // extract ticks from ThreadProfiler.
1.315 + static void interval_print(); // print interval data.
1.316 + static void interval_reset(); // reset interval data.
1.317 + enum {interval_print_size = 10};
1.318 + static IntervalData* interval_data;
1.319 +#endif // INCLUDE_FPROF
1.320 +};
1.321 +
1.322 +#endif // SHARE_VM_RUNTIME_FPROFILER_HPP
