1 /* 2 * Copyright (c) 1998, 2017, 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_COMPILETASK_HPP 26 #define SHARE_VM_COMPILER_COMPILETASK_HPP 27 28 #include "ci/ciMethod.hpp" 29 #include "code/nmethod.hpp" 30 #include "compiler/compileLog.hpp" 31 #include "memory/allocation.hpp" 32 #include "utilities/xmlstream.hpp" 33 34 // CompileTask 35 // 36 // An entry in the compile queue. It represents a pending or current 37 // compilation. 38 39 class CompileTask : public CHeapObj<mtCompiler> { 40 friend class VMStructs; 41 friend class JVMCIVMStructs; 42 43 public: 44 // Different reasons for a compilation 45 // The order is important - Reason_Whitebox and higher can not become 46 // stale, see CompileTask::can_become_stale() 47 // Also mapped to reason_names[] 48 enum CompileReason { 49 Reason_None, 50 Reason_InvocationCount, // Simple/StackWalk-policy 51 Reason_BackedgeCount, // Simple/StackWalk-policy 52 Reason_Tiered, // Tiered-policy 53 Reason_CTW, // Compile the world 54 Reason_Replay, // ciReplay 55 Reason_Whitebox, // Whitebox API 56 Reason_MustBeCompiled, // Java callHelper, LinkResolver 57 Reason_Bootstrap, // JVMCI bootstrap 58 Reason_Count 59 }; 60 61 static const char* reason_name(CompileTask::CompileReason compile_reason) { 62 static const char* reason_names[] = { 63 "no_reason", 64 "count", 65 "backedge_count", 66 "tiered", 67 "CTW", 68 "replay", 69 "whitebox", 70 "must_be_compiled", 71 "bootstrap" 72 }; 73 return reason_names[compile_reason]; 74 } 75 76 private: 77 static CompileTask* _task_free_list; 78 #ifdef ASSERT 79 static int _num_allocated_tasks; 80 #endif 81 82 Monitor* _lock; 83 uint _compile_id; 84 Method* _method; 85 jobject _method_holder; 86 int _osr_bci; 87 bool _is_complete; 88 bool _is_success; 89 bool _is_blocking; 90 #if INCLUDE_JVMCI 91 bool _has_waiter; 92 // Compiler thread for a blocking JVMCI compilation 93 CompilerThread* _jvmci_compiler_thread; 94 #endif 95 int _comp_level; 96 int _num_inlined_bytecodes; 97 nmethodLocker* _code_handle; // holder of eventual result 98 CompileTask* _next, *_prev; 99 bool _is_free; 100 // Fields used for logging why the compilation was initiated: 101 jlong _time_queued; // time when task was enqueued 102 jlong _time_started; // time when compilation started 103 Method* _hot_method; // which method actually triggered this task 104 jobject _hot_method_holder; 105 int _hot_count; // information about its invocation counter 106 CompileReason _compile_reason; // more info about the task 107 const char* _failure_reason; 108 109 public: 110 CompileTask() { 111 _lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock"); 112 } 113 114 void initialize(int compile_id, const methodHandle& method, int osr_bci, int comp_level, 115 const methodHandle& hot_method, int hot_count, 116 CompileTask::CompileReason compile_reason, bool is_blocking); 117 118 static CompileTask* allocate(); 119 static void free(CompileTask* task); 120 121 int compile_id() const { return _compile_id; } 122 Method* method() const { return _method; } 123 Method* hot_method() const { return _hot_method; } 124 int osr_bci() const { return _osr_bci; } 125 bool is_complete() const { return _is_complete; } 126 bool is_blocking() const { return _is_blocking; } 127 bool is_success() const { return _is_success; } 128 bool can_become_stale() const { 129 switch (_compile_reason) { 130 case Reason_BackedgeCount: 131 case Reason_InvocationCount: 132 case Reason_Tiered: 133 return !_is_blocking; 134 default: 135 return false; 136 } 137 } 138 #if INCLUDE_JVMCI 139 bool has_waiter() const { return _has_waiter; } 140 void clear_waiter() { _has_waiter = false; } 141 CompilerThread* jvmci_compiler_thread() const { return _jvmci_compiler_thread; } 142 void set_jvmci_compiler_thread(CompilerThread* t) { 143 assert(is_blocking(), "must be"); 144 assert((t == NULL) != (_jvmci_compiler_thread == NULL), "must be"); 145 _jvmci_compiler_thread = t; 146 } 147 #endif 148 149 nmethodLocker* code_handle() const { return _code_handle; } 150 void set_code_handle(nmethodLocker* l) { _code_handle = l; } 151 nmethod* code() const; // _code_handle->code() 152 void set_code(nmethod* nm); // _code_handle->set_code(nm) 153 154 Monitor* lock() const { return _lock; } 155 156 void mark_complete() { _is_complete = true; } 157 void mark_success() { _is_success = true; } 158 void mark_started(jlong time) { _time_started = time; } 159 160 int comp_level() { return _comp_level;} 161 void set_comp_level(int comp_level) { _comp_level = comp_level;} 162 163 AbstractCompiler* compiler(); 164 CompileTask* select_for_compilation(); 165 166 int num_inlined_bytecodes() const { return _num_inlined_bytecodes; } 167 void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; } 168 169 CompileTask* next() const { return _next; } 170 void set_next(CompileTask* next) { _next = next; } 171 CompileTask* prev() const { return _prev; } 172 void set_prev(CompileTask* prev) { _prev = prev; } 173 bool is_free() const { return _is_free; } 174 void set_is_free(bool val) { _is_free = val; } 175 bool is_unloaded() const; 176 177 // RedefineClasses support 178 void metadata_do(void f(Metadata*)); 179 void mark_on_stack(); 180 181 private: 182 static void print_impl(outputStream* st, Method* method, int compile_id, int comp_level, 183 bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false, 184 const char* msg = NULL, bool short_form = false, bool cr = true, 185 jlong time_queued = 0, jlong time_started = 0); 186 187 public: 188 void print(outputStream* st = tty, const char* msg = NULL, bool short_form = false, bool cr = true); 189 void print_ul(const char* msg = NULL); 190 static void print(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false, bool cr = true) { 191 print_impl(st, nm->method(), nm->compile_id(), nm->comp_level(), 192 nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false, 193 msg, short_form, cr); 194 } 195 static void print_ul(const nmethod* nm, const char* msg = NULL); 196 197 static void print_inline_indent(int inline_level, outputStream* st = tty); 198 199 void print_tty(); 200 void print_line_on_error(outputStream* st, char* buf, int buflen); 201 202 void log_task(xmlStream* log); 203 void log_task_queued(); 204 void log_task_start(CompileLog* log); 205 void log_task_done(CompileLog* log); 206 207 void set_failure_reason(const char* reason) { 208 _failure_reason = reason; 209 } 210 211 bool check_break_at_flags(); 212 213 static void print_inlining_inner(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL); 214 static void print_inlining_tty(ciMethod* method, int inline_level, int bci, const char* msg = NULL) { 215 print_inlining_inner(tty, method, inline_level, bci, msg); 216 } 217 static void print_inlining_ul(ciMethod* method, int inline_level, int bci, const char* msg = NULL); 218 }; 219 220 #endif // SHARE_VM_COMPILER_COMPILETASK_HPP