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0
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1 /*
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2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_compileBroker.cpp.incl"
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27
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28 #ifdef DTRACE_ENABLED
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29
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30 // Only bother with this argument setup if dtrace is available
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31
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32 HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
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33 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
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34 HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
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35 char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
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36
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37 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method) \
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38 { \
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39 char* comp_name = (char*)(compiler)->name(); \
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40 symbolOop klass_name = (method)->klass_name(); \
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41 symbolOop name = (method)->name(); \
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42 symbolOop signature = (method)->signature(); \
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43 HS_DTRACE_PROBE8(hotspot, method__compile__begin, \
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44 comp_name, strlen(comp_name), \
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45 klass_name->bytes(), klass_name->utf8_length(), \
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46 name->bytes(), name->utf8_length(), \
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47 signature->bytes(), signature->utf8_length()); \
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48 }
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49
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50 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success) \
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51 { \
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52 char* comp_name = (char*)(compiler)->name(); \
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53 symbolOop klass_name = (method)->klass_name(); \
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54 symbolOop name = (method)->name(); \
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55 symbolOop signature = (method)->signature(); \
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56 HS_DTRACE_PROBE9(hotspot, method__compile__end, \
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57 comp_name, strlen(comp_name), \
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58 klass_name->bytes(), klass_name->utf8_length(), \
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59 name->bytes(), name->utf8_length(), \
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60 signature->bytes(), signature->utf8_length(), (success)); \
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61 }
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62
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63 #else // ndef DTRACE_ENABLED
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64
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65 #define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
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66 #define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
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67
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68 #endif // ndef DTRACE_ENABLED
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69
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70 bool CompileBroker::_initialized = false;
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71 volatile bool CompileBroker::_should_block = false;
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72
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73 // The installed compiler(s)
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74 AbstractCompiler* CompileBroker::_compilers[2];
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75
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76 // These counters are used for assigning id's to each compilation
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77 uint CompileBroker::_compilation_id = 0;
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78 uint CompileBroker::_osr_compilation_id = 0;
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79
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80 // Debugging information
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81 int CompileBroker::_last_compile_type = no_compile;
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82 int CompileBroker::_last_compile_level = CompLevel_none;
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83 char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
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84
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85 // Performance counters
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86 PerfCounter* CompileBroker::_perf_total_compilation = NULL;
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87 PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
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88 PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
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89
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90 PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
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91 PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
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92 PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
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93 PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
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94 PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
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95
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96 PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
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97 PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
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98 PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
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99 PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
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100
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101 PerfStringVariable* CompileBroker::_perf_last_method = NULL;
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102 PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
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103 PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
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104 PerfVariable* CompileBroker::_perf_last_compile_type = NULL;
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105 PerfVariable* CompileBroker::_perf_last_compile_size = NULL;
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106 PerfVariable* CompileBroker::_perf_last_failed_type = NULL;
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107 PerfVariable* CompileBroker::_perf_last_invalidated_type = NULL;
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108
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109 // Timers and counters for generating statistics
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110 elapsedTimer CompileBroker::_t_total_compilation;
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111 elapsedTimer CompileBroker::_t_osr_compilation;
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112 elapsedTimer CompileBroker::_t_standard_compilation;
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113
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114 int CompileBroker::_total_bailout_count = 0;
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115 int CompileBroker::_total_invalidated_count = 0;
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116 int CompileBroker::_total_compile_count = 0;
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117 int CompileBroker::_total_osr_compile_count = 0;
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118 int CompileBroker::_total_standard_compile_count = 0;
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119
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120 int CompileBroker::_sum_osr_bytes_compiled = 0;
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121 int CompileBroker::_sum_standard_bytes_compiled = 0;
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122 int CompileBroker::_sum_nmethod_size = 0;
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123 int CompileBroker::_sum_nmethod_code_size = 0;
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124
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125 CompileQueue* CompileBroker::_method_queue = NULL;
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126 CompileTask* CompileBroker::_task_free_list = NULL;
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127
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128 GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
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129
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130 // CompileTaskWrapper
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131 //
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132 // Assign this task to the current thread. Deallocate the task
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133 // when the compilation is complete.
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134 class CompileTaskWrapper : StackObj {
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135 public:
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136 CompileTaskWrapper(CompileTask* task);
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137 ~CompileTaskWrapper();
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138 };
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139
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140 CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
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141 CompilerThread* thread = CompilerThread::current();
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142 thread->set_task(task);
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143 CompileLog* log = thread->log();
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144 if (log != NULL) task->log_task_start(log);
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145 }
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146
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147 CompileTaskWrapper::~CompileTaskWrapper() {
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148 CompilerThread* thread = CompilerThread::current();
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149 CompileTask* task = thread->task();
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150 CompileLog* log = thread->log();
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151 if (log != NULL) task->log_task_done(log);
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152 thread->set_task(NULL);
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153 task->set_code_handle(NULL);
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154 DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
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155 if (task->is_blocking()) {
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156 MutexLocker notifier(task->lock(), thread);
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157 task->mark_complete();
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158 // Notify the waiting thread that the compilation has completed.
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159 task->lock()->notify_all();
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160 } else {
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161 task->mark_complete();
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162
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163 // By convention, the compiling thread is responsible for
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164 // recycling a non-blocking CompileTask.
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165 CompileBroker::free_task(task);
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166 }
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167 }
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168
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169
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170 // ------------------------------------------------------------------
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171 // CompileTask::initialize
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172 void CompileTask::initialize(int compile_id,
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173 methodHandle method,
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174 int osr_bci,
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175 int comp_level,
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176 methodHandle hot_method,
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177 int hot_count,
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178 const char* comment,
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179 bool is_blocking) {
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180 assert(!_lock->is_locked(), "bad locking");
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181
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182 _compile_id = compile_id;
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183 _method = JNIHandles::make_global(method);
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184 _osr_bci = osr_bci;
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185 _is_blocking = is_blocking;
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186 _comp_level = comp_level;
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187 _num_inlined_bytecodes = 0;
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188
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189 _is_complete = false;
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190 _is_success = false;
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191 _code_handle = NULL;
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192
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193 _hot_method = NULL;
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194 _hot_count = hot_count;
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195 _time_queued = 0; // tidy
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196 _comment = comment;
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197
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198 if (LogCompilation) {
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199 _time_queued = os::elapsed_counter();
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200 if (hot_method.not_null()) {
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201 if (hot_method == method) {
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202 _hot_method = _method;
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203 } else {
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204 _hot_method = JNIHandles::make_global(hot_method);
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205 }
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206 }
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207 }
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208
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209 _next = NULL;
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210 }
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211
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212 // ------------------------------------------------------------------
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213 // CompileTask::code/set_code
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214 nmethod* CompileTask::code() const {
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215 if (_code_handle == NULL) return NULL;
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216 return _code_handle->code();
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217 }
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218 void CompileTask::set_code(nmethod* nm) {
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219 if (_code_handle == NULL && nm == NULL) return;
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220 guarantee(_code_handle != NULL, "");
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221 _code_handle->set_code(nm);
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222 if (nm == NULL) _code_handle = NULL; // drop the handle also
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223 }
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224
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225 // ------------------------------------------------------------------
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226 // CompileTask::free
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227 void CompileTask::free() {
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228 set_code(NULL);
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229 assert(!_lock->is_locked(), "Should not be locked when freed");
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230 if (_hot_method != NULL && _hot_method != _method) {
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231 JNIHandles::destroy_global(_hot_method);
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232 }
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233 JNIHandles::destroy_global(_method);
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234 }
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235
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236
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237 // ------------------------------------------------------------------
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238 // CompileTask::print
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239 void CompileTask::print() {
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240 tty->print("<CompileTask compile_id=%d ", _compile_id);
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241 tty->print("method=");
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242 ((methodOop)JNIHandles::resolve(_method))->print_name(tty);
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243 tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
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244 _osr_bci, bool_to_str(_is_blocking),
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245 bool_to_str(_is_complete), bool_to_str(_is_success));
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246 }
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247
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248 // ------------------------------------------------------------------
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249 // CompileTask::print_line_on_error
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250 //
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251 // This function is called by fatal error handler when the thread
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252 // causing troubles is a compiler thread.
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253 //
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254 // Do not grab any lock, do not allocate memory.
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255 //
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256 // Otherwise it's the same as CompileTask::print_line()
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257 //
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258 void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
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259 methodOop method = (methodOop)JNIHandles::resolve(_method);
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260
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261 // print compiler name
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262 st->print("%s:", CompileBroker::compiler(comp_level())->name());
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263
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264 // print compilation number
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265 st->print("%3d", compile_id());
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266
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267 // print method attributes
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268 const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
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269 { const char blocking_char = is_blocking() ? 'b' : ' ';
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270 const char compile_type = is_osr ? '%' : ' ';
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271 const char sync_char = method->is_synchronized() ? 's' : ' ';
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272 const char exception_char = method->has_exception_handler() ? '!' : ' ';
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273 const char tier_char =
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274 is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level());
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275 st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
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276 }
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277
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278 // Use buf to get method name and signature
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279 if (method != NULL) st->print("%s", method->name_and_sig_as_C_string(buf, buflen));
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280
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281 // print osr_bci if any
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282 if (is_osr) st->print(" @ %d", osr_bci());
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283
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284 // print method size
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285 st->print_cr(" (%d bytes)", method->code_size());
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286 }
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287
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288 // ------------------------------------------------------------------
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289 // CompileTask::print_line
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290 void CompileTask::print_line() {
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291 Thread *thread = Thread::current();
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292 methodHandle method(thread,
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293 (methodOop)JNIHandles::resolve(method_handle()));
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294 ResourceMark rm(thread);
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295
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296 ttyLocker ttyl; // keep the following output all in one block
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297
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298 // print compiler name if requested
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299 if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
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300
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301 // print compilation number
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302 tty->print("%3d", compile_id());
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303
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304 // print method attributes
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305 const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
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306 { const char blocking_char = is_blocking() ? 'b' : ' ';
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307 const char compile_type = is_osr ? '%' : ' ';
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308 const char sync_char = method->is_synchronized() ? 's' : ' ';
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309 const char exception_char = method->has_exception_handler() ? '!' : ' ';
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310 const char tier_char =
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311 is_highest_tier_compile(comp_level()) ? ' ' : ('0' + comp_level());
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312 tty->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
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313 }
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314
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315 // print method name
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316 method->print_short_name(tty);
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317
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318 // print osr_bci if any
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319 if (is_osr) tty->print(" @ %d", osr_bci());
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320
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321 // print method size
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322 tty->print_cr(" (%d bytes)", method->code_size());
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323 }
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324
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325
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326 // ------------------------------------------------------------------
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327 // CompileTask::log_task
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328 void CompileTask::log_task(xmlStream* log) {
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329 Thread* thread = Thread::current();
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330 methodHandle method(thread,
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331 (methodOop)JNIHandles::resolve(method_handle()));
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332 ResourceMark rm(thread);
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333
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334 // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
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335 if (_compile_id != 0) log->print(" compile_id='%d'", _compile_id);
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336 if (_osr_bci != CompileBroker::standard_entry_bci) {
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337 log->print(" compile_kind='osr'"); // same as nmethod::compile_kind
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338 } // else compile_kind='c2c'
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339 if (!method.is_null()) log->method(method);
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340 if (_osr_bci != CompileBroker::standard_entry_bci) {
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341 log->print(" osr_bci='%d'", _osr_bci);
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342 }
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343 if (_comp_level != CompLevel_highest_tier) {
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344 log->print(" level='%d'", _comp_level);
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345 }
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346 if (_is_blocking) {
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347 log->print(" blocking='1'");
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348 }
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349 log->stamp();
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350 }
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351
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352
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353 // ------------------------------------------------------------------
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354 // CompileTask::log_task_queued
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355 void CompileTask::log_task_queued() {
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356 Thread* thread = Thread::current();
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357 ttyLocker ttyl;
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358 ResourceMark rm(thread);
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359
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360 xtty->begin_elem("task_queued");
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361 log_task(xtty);
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362 if (_comment != NULL) {
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363 xtty->print(" comment='%s'", _comment);
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364 }
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365 if (_hot_method != NULL) {
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366 methodHandle hot(thread,
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367 (methodOop)JNIHandles::resolve(_hot_method));
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368 methodHandle method(thread,
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369 (methodOop)JNIHandles::resolve(_method));
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370 if (hot() != method()) {
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371 xtty->method(hot);
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372 }
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373 }
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374 if (_hot_count != 0) {
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375 xtty->print(" hot_count='%d'", _hot_count);
|
|
|
376 }
|
|
|
377 xtty->end_elem();
|
|
|
378 }
|
|
|
379
|
|
|
380
|
|
|
381 // ------------------------------------------------------------------
|
|
|
382 // CompileTask::log_task_start
|
|
|
383 void CompileTask::log_task_start(CompileLog* log) {
|
|
|
384 log->begin_head("task");
|
|
|
385 log_task(log);
|
|
|
386 log->end_head();
|
|
|
387 }
|
|
|
388
|
|
|
389
|
|
|
390 // ------------------------------------------------------------------
|
|
|
391 // CompileTask::log_task_done
|
|
|
392 void CompileTask::log_task_done(CompileLog* log) {
|
|
|
393 Thread* thread = Thread::current();
|
|
|
394 methodHandle method(thread,
|
|
|
395 (methodOop)JNIHandles::resolve(method_handle()));
|
|
|
396 ResourceMark rm(thread);
|
|
|
397
|
|
|
398 // <task_done ... stamp='1.234'> </task>
|
|
|
399 nmethod* nm = code();
|
|
|
400 log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
|
|
|
401 _is_success, nm == NULL ? 0 : nm->instructions_size(),
|
|
|
402 method->invocation_count());
|
|
|
403 int bec = method->backedge_count();
|
|
|
404 if (bec != 0) log->print(" backedge_count='%d'", bec);
|
|
|
405 // Note: "_is_complete" is about to be set, but is not.
|
|
|
406 if (_num_inlined_bytecodes != 0) {
|
|
|
407 log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
|
|
|
408 }
|
|
|
409 log->stamp();
|
|
|
410 log->end_elem();
|
|
|
411 log->tail("task");
|
|
|
412 log->clear_identities(); // next task will have different CI
|
|
|
413 if (log->unflushed_count() > 2000) {
|
|
|
414 log->flush();
|
|
|
415 }
|
|
|
416 log->mark_file_end();
|
|
|
417 }
|
|
|
418
|
|
|
419
|
|
|
420
|
|
|
421 // ------------------------------------------------------------------
|
|
|
422 // CompileQueue::add
|
|
|
423 //
|
|
|
424 // Add a CompileTask to a CompileQueue
|
|
|
425 void CompileQueue::add(CompileTask* task) {
|
|
|
426 assert(lock()->owned_by_self(), "must own lock");
|
|
|
427
|
|
|
428 task->set_next(NULL);
|
|
|
429
|
|
|
430 if (_last == NULL) {
|
|
|
431 // The compile queue is empty.
|
|
|
432 assert(_first == NULL, "queue is empty");
|
|
|
433 _first = task;
|
|
|
434 _last = task;
|
|
|
435 } else {
|
|
|
436 // Append the task to the queue.
|
|
|
437 assert(_last->next() == NULL, "not last");
|
|
|
438 _last->set_next(task);
|
|
|
439 _last = task;
|
|
|
440 }
|
|
|
441
|
|
|
442 // Mark the method as being in the compile queue.
|
|
|
443 ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
|
|
|
444
|
|
|
445 if (CIPrintCompileQueue) {
|
|
|
446 print();
|
|
|
447 }
|
|
|
448
|
|
|
449 if (LogCompilation && xtty != NULL) {
|
|
|
450 task->log_task_queued();
|
|
|
451 }
|
|
|
452
|
|
|
453 // Notify CompilerThreads that a task is available.
|
|
|
454 lock()->notify();
|
|
|
455 }
|
|
|
456
|
|
|
457
|
|
|
458 // ------------------------------------------------------------------
|
|
|
459 // CompileQueue::get
|
|
|
460 //
|
|
|
461 // Get the next CompileTask from a CompileQueue
|
|
|
462 CompileTask* CompileQueue::get() {
|
|
|
463 MutexLocker locker(lock());
|
|
|
464
|
|
|
465 // Wait for an available CompileTask.
|
|
|
466 while (_first == NULL) {
|
|
|
467 // There is no work to be done right now. Wait.
|
|
|
468 lock()->wait();
|
|
|
469 }
|
|
|
470
|
|
|
471 CompileTask* task = _first;
|
|
|
472
|
|
|
473 // Update queue first and last
|
|
|
474 _first =_first->next();
|
|
|
475 if (_first == NULL) {
|
|
|
476 _last = NULL;
|
|
|
477 }
|
|
|
478
|
|
|
479 return task;
|
|
|
480
|
|
|
481 }
|
|
|
482
|
|
|
483
|
|
|
484 // ------------------------------------------------------------------
|
|
|
485 // CompileQueue::print
|
|
|
486 void CompileQueue::print() {
|
|
|
487 tty->print_cr("Contents of %s", name());
|
|
|
488 tty->print_cr("----------------------");
|
|
|
489 CompileTask* task = _first;
|
|
|
490 while (task != NULL) {
|
|
|
491 task->print_line();
|
|
|
492 task = task->next();
|
|
|
493 }
|
|
|
494 tty->print_cr("----------------------");
|
|
|
495 }
|
|
|
496
|
|
|
497 CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
|
|
|
498
|
|
|
499 _current_method[0] = '\0';
|
|
|
500 _compile_type = CompileBroker::no_compile;
|
|
|
501
|
|
|
502 if (UsePerfData) {
|
|
|
503 ResourceMark rm;
|
|
|
504
|
|
|
505 // create the thread instance name space string - don't create an
|
|
|
506 // instance subspace if instance is -1 - keeps the adapterThread
|
|
|
507 // counters from having a ".0" namespace.
|
|
|
508 const char* thread_i = (instance == -1) ? thread_name :
|
|
|
509 PerfDataManager::name_space(thread_name, instance);
|
|
|
510
|
|
|
511
|
|
|
512 char* name = PerfDataManager::counter_name(thread_i, "method");
|
|
|
513 _perf_current_method =
|
|
|
514 PerfDataManager::create_string_variable(SUN_CI, name,
|
|
|
515 cmname_buffer_length,
|
|
|
516 _current_method, CHECK);
|
|
|
517
|
|
|
518 name = PerfDataManager::counter_name(thread_i, "type");
|
|
|
519 _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
|
|
|
520 PerfData::U_None,
|
|
|
521 (jlong)_compile_type,
|
|
|
522 CHECK);
|
|
|
523
|
|
|
524 name = PerfDataManager::counter_name(thread_i, "time");
|
|
|
525 _perf_time = PerfDataManager::create_counter(SUN_CI, name,
|
|
|
526 PerfData::U_Ticks, CHECK);
|
|
|
527
|
|
|
528 name = PerfDataManager::counter_name(thread_i, "compiles");
|
|
|
529 _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
|
|
|
530 PerfData::U_Events, CHECK);
|
|
|
531 }
|
|
|
532 }
|
|
|
533
|
|
|
534
|
|
|
535 // ------------------------------------------------------------------
|
|
|
536 // CompileBroker::compilation_init
|
|
|
537 //
|
|
|
538 // Initialize the Compilation object
|
|
|
539 void CompileBroker::compilation_init() {
|
|
|
540 _last_method_compiled[0] = '\0';
|
|
|
541
|
|
|
542 // Set the interface to the current compiler(s).
|
|
|
543 #ifdef COMPILER1
|
|
|
544 _compilers[0] = new Compiler();
|
|
|
545 #ifndef COMPILER2
|
|
|
546 _compilers[1] = _compilers[0];
|
|
|
547 #endif
|
|
|
548 #endif // COMPILER1
|
|
|
549
|
|
|
550 #ifdef COMPILER2
|
|
|
551 _compilers[1] = new C2Compiler();
|
|
|
552 #ifndef COMPILER1
|
|
|
553 _compilers[0] = _compilers[1];
|
|
|
554 #endif
|
|
|
555 #endif // COMPILER2
|
|
|
556
|
|
|
557 // Initialize the CompileTask free list
|
|
|
558 _task_free_list = NULL;
|
|
|
559
|
|
|
560 // Start the CompilerThreads
|
|
|
561 init_compiler_threads(compiler_count());
|
|
|
562
|
|
|
563
|
|
|
564 // totalTime performance counter is always created as it is required
|
|
|
565 // by the implementation of java.lang.management.CompilationMBean.
|
|
|
566 {
|
|
|
567 EXCEPTION_MARK;
|
|
|
568 _perf_total_compilation =
|
|
|
569 PerfDataManager::create_counter(JAVA_CI, "totalTime",
|
|
|
570 PerfData::U_Ticks, CHECK);
|
|
|
571 }
|
|
|
572
|
|
|
573
|
|
|
574 if (UsePerfData) {
|
|
|
575
|
|
|
576 EXCEPTION_MARK;
|
|
|
577
|
|
|
578 // create the jvmstat performance counters
|
|
|
579 _perf_osr_compilation =
|
|
|
580 PerfDataManager::create_counter(SUN_CI, "osrTime",
|
|
|
581 PerfData::U_Ticks, CHECK);
|
|
|
582
|
|
|
583 _perf_standard_compilation =
|
|
|
584 PerfDataManager::create_counter(SUN_CI, "standardTime",
|
|
|
585 PerfData::U_Ticks, CHECK);
|
|
|
586
|
|
|
587 _perf_total_bailout_count =
|
|
|
588 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
|
|
|
589 PerfData::U_Events, CHECK);
|
|
|
590
|
|
|
591 _perf_total_invalidated_count =
|
|
|
592 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
|
|
|
593 PerfData::U_Events, CHECK);
|
|
|
594
|
|
|
595 _perf_total_compile_count =
|
|
|
596 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
|
|
|
597 PerfData::U_Events, CHECK);
|
|
|
598 _perf_total_osr_compile_count =
|
|
|
599 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
|
|
|
600 PerfData::U_Events, CHECK);
|
|
|
601
|
|
|
602 _perf_total_standard_compile_count =
|
|
|
603 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
|
|
|
604 PerfData::U_Events, CHECK);
|
|
|
605
|
|
|
606 _perf_sum_osr_bytes_compiled =
|
|
|
607 PerfDataManager::create_counter(SUN_CI, "osrBytes",
|
|
|
608 PerfData::U_Bytes, CHECK);
|
|
|
609
|
|
|
610 _perf_sum_standard_bytes_compiled =
|
|
|
611 PerfDataManager::create_counter(SUN_CI, "standardBytes",
|
|
|
612 PerfData::U_Bytes, CHECK);
|
|
|
613
|
|
|
614 _perf_sum_nmethod_size =
|
|
|
615 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
|
|
|
616 PerfData::U_Bytes, CHECK);
|
|
|
617
|
|
|
618 _perf_sum_nmethod_code_size =
|
|
|
619 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
|
|
|
620 PerfData::U_Bytes, CHECK);
|
|
|
621
|
|
|
622 _perf_last_method =
|
|
|
623 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
|
|
|
624 CompilerCounters::cmname_buffer_length,
|
|
|
625 "", CHECK);
|
|
|
626
|
|
|
627 _perf_last_failed_method =
|
|
|
628 PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
|
|
|
629 CompilerCounters::cmname_buffer_length,
|
|
|
630 "", CHECK);
|
|
|
631
|
|
|
632 _perf_last_invalidated_method =
|
|
|
633 PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
|
|
|
634 CompilerCounters::cmname_buffer_length,
|
|
|
635 "", CHECK);
|
|
|
636
|
|
|
637 _perf_last_compile_type =
|
|
|
638 PerfDataManager::create_variable(SUN_CI, "lastType",
|
|
|
639 PerfData::U_None,
|
|
|
640 (jlong)CompileBroker::no_compile,
|
|
|
641 CHECK);
|
|
|
642
|
|
|
643 _perf_last_compile_size =
|
|
|
644 PerfDataManager::create_variable(SUN_CI, "lastSize",
|
|
|
645 PerfData::U_Bytes,
|
|
|
646 (jlong)CompileBroker::no_compile,
|
|
|
647 CHECK);
|
|
|
648
|
|
|
649
|
|
|
650 _perf_last_failed_type =
|
|
|
651 PerfDataManager::create_variable(SUN_CI, "lastFailedType",
|
|
|
652 PerfData::U_None,
|
|
|
653 (jlong)CompileBroker::no_compile,
|
|
|
654 CHECK);
|
|
|
655
|
|
|
656 _perf_last_invalidated_type =
|
|
|
657 PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
|
|
|
658 PerfData::U_None,
|
|
|
659 (jlong)CompileBroker::no_compile,
|
|
|
660 CHECK);
|
|
|
661 }
|
|
|
662
|
|
|
663 _initialized = true;
|
|
|
664 }
|
|
|
665
|
|
|
666
|
|
|
667
|
|
|
668 // ------------------------------------------------------------------
|
|
|
669 // CompileBroker::make_compiler_thread
|
|
|
670 CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
|
|
|
671 CompilerThread* compiler_thread = NULL;
|
|
|
672
|
|
|
673 klassOop k =
|
|
|
674 SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(),
|
|
|
675 true, CHECK_0);
|
|
|
676 instanceKlassHandle klass (THREAD, k);
|
|
|
677 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
|
|
|
678 Handle string = java_lang_String::create_from_str(name, CHECK_0);
|
|
|
679
|
|
|
680 // Initialize thread_oop to put it into the system threadGroup
|
|
|
681 Handle thread_group (THREAD, Universe::system_thread_group());
|
|
|
682 JavaValue result(T_VOID);
|
|
|
683 JavaCalls::call_special(&result, thread_oop,
|
|
|
684 klass,
|
|
|
685 vmSymbolHandles::object_initializer_name(),
|
|
|
686 vmSymbolHandles::threadgroup_string_void_signature(),
|
|
|
687 thread_group,
|
|
|
688 string,
|
|
|
689 CHECK_0);
|
|
|
690
|
|
|
691 {
|
|
|
692 MutexLocker mu(Threads_lock, THREAD);
|
|
|
693 compiler_thread = new CompilerThread(queue, counters);
|
|
|
694 // At this point the new CompilerThread data-races with this startup
|
|
|
695 // thread (which I believe is the primoridal thread and NOT the VM
|
|
|
696 // thread). This means Java bytecodes being executed at startup can
|
|
|
697 // queue compile jobs which will run at whatever default priority the
|
|
|
698 // newly created CompilerThread runs at.
|
|
|
699
|
|
|
700
|
|
|
701 // At this point it may be possible that no osthread was created for the
|
|
|
702 // JavaThread due to lack of memory. We would have to throw an exception
|
|
|
703 // in that case. However, since this must work and we do not allow
|
|
|
704 // exceptions anyway, check and abort if this fails.
|
|
|
705
|
|
|
706 if (compiler_thread == NULL || compiler_thread->osthread() == NULL){
|
|
|
707 vm_exit_during_initialization("java.lang.OutOfMemoryError",
|
|
|
708 "unable to create new native thread");
|
|
|
709 }
|
|
|
710
|
|
|
711 java_lang_Thread::set_thread(thread_oop(), compiler_thread);
|
|
|
712
|
|
|
713 // Note that this only sets the JavaThread _priority field, which by
|
|
|
714 // definition is limited to Java priorities and not OS priorities.
|
|
|
715 // The os-priority is set in the CompilerThread startup code itself
|
|
|
716 java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
|
|
|
717 // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
|
|
|
718 // threads never have their OS priority set. The assumption here is to
|
|
|
719 // enable the Performance group to do flag tuning, figure out a suitable
|
|
|
720 // CompilerThreadPriority, and then remove this 'if' statement (and
|
|
|
721 // comment) and unconditionally set the priority.
|
|
|
722
|
|
|
723 // Compiler Threads should be at the highest Priority
|
|
|
724 if ( CompilerThreadPriority != -1 )
|
|
|
725 os::set_native_priority( compiler_thread, CompilerThreadPriority );
|
|
|
726 else
|
|
|
727 os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
|
|
|
728
|
|
|
729 // Note that I cannot call os::set_priority because it expects Java
|
|
|
730 // priorities and I am *explicitly* using OS priorities so that it's
|
|
|
731 // possible to set the compiler thread priority higher than any Java
|
|
|
732 // thread.
|
|
|
733
|
|
|
734 java_lang_Thread::set_daemon(thread_oop());
|
|
|
735
|
|
|
736 compiler_thread->set_threadObj(thread_oop());
|
|
|
737 Threads::add(compiler_thread);
|
|
|
738 Thread::start(compiler_thread);
|
|
|
739 }
|
|
|
740 // Let go of Threads_lock before yielding
|
|
|
741 os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
|
|
|
742
|
|
|
743 return compiler_thread;
|
|
|
744 }
|
|
|
745
|
|
|
746
|
|
|
747 // ------------------------------------------------------------------
|
|
|
748 // CompileBroker::init_compiler_threads
|
|
|
749 //
|
|
|
750 // Initialize the compilation queue
|
|
|
751 void CompileBroker::init_compiler_threads(int compiler_count) {
|
|
|
752 EXCEPTION_MARK;
|
|
|
753
|
|
|
754 _method_queue = new CompileQueue("MethodQueue", MethodCompileQueue_lock);
|
|
|
755 _method_threads =
|
|
|
756 new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
|
|
|
757
|
|
|
758 char name_buffer[256];
|
|
|
759 int i;
|
|
|
760 for (i = 0; i < compiler_count; i++) {
|
|
|
761 // Create a name for our thread.
|
|
|
762 sprintf(name_buffer, "CompilerThread%d", i);
|
|
|
763 CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
|
|
|
764
|
|
|
765 CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK);
|
|
|
766 _method_threads->append(new_thread);
|
|
|
767 }
|
|
|
768 if (UsePerfData) {
|
|
|
769 PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
|
|
|
770 compiler_count, CHECK);
|
|
|
771 }
|
|
|
772 }
|
|
|
773
|
|
|
774 // ------------------------------------------------------------------
|
|
|
775 // CompileBroker::is_idle
|
|
|
776 bool CompileBroker::is_idle() {
|
|
|
777 if (!_method_queue->is_empty()) {
|
|
|
778 return false;
|
|
|
779 } else {
|
|
|
780 int num_threads = _method_threads->length();
|
|
|
781 for (int i=0; i<num_threads; i++) {
|
|
|
782 if (_method_threads->at(i)->task() != NULL) {
|
|
|
783 return false;
|
|
|
784 }
|
|
|
785 }
|
|
|
786
|
|
|
787 // No pending or active compilations.
|
|
|
788 return true;
|
|
|
789 }
|
|
|
790 }
|
|
|
791
|
|
|
792
|
|
|
793 // ------------------------------------------------------------------
|
|
|
794 // CompileBroker::compile_method
|
|
|
795 //
|
|
|
796 // Request compilation of a method.
|
|
|
797 void CompileBroker::compile_method_base(methodHandle method,
|
|
|
798 int osr_bci,
|
|
|
799 int comp_level,
|
|
|
800 methodHandle hot_method,
|
|
|
801 int hot_count,
|
|
|
802 const char* comment,
|
|
|
803 TRAPS) {
|
|
|
804 // do nothing if compiler thread(s) is not available
|
|
|
805 if (!_initialized ) {
|
|
|
806 return;
|
|
|
807 }
|
|
|
808
|
|
|
809 guarantee(!method->is_abstract(), "cannot compile abstract methods");
|
|
|
810 assert(method->method_holder()->klass_part()->oop_is_instance(),
|
|
|
811 "sanity check");
|
|
|
812 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
|
|
|
813 "method holder must be initialized");
|
|
|
814
|
|
|
815 if (CIPrintRequests) {
|
|
|
816 tty->print("request: ");
|
|
|
817 method->print_short_name(tty);
|
|
|
818 if (osr_bci != InvocationEntryBci) {
|
|
|
819 tty->print(" osr_bci: %d", osr_bci);
|
|
|
820 }
|
|
|
821 tty->print(" comment: %s count: %d", comment, hot_count);
|
|
|
822 if (!hot_method.is_null()) {
|
|
|
823 tty->print(" hot: ");
|
|
|
824 if (hot_method() != method()) {
|
|
|
825 hot_method->print_short_name(tty);
|
|
|
826 } else {
|
|
|
827 tty->print("yes");
|
|
|
828 }
|
|
|
829 }
|
|
|
830 tty->cr();
|
|
|
831 }
|
|
|
832
|
|
|
833 // A request has been made for compilation. Before we do any
|
|
|
834 // real work, check to see if the method has been compiled
|
|
|
835 // in the meantime with a definitive result.
|
|
|
836 if (compilation_is_complete(method, osr_bci, comp_level)) {
|
|
|
837 return;
|
|
|
838 }
|
|
|
839
|
|
|
840 // If this method is already in the compile queue, then
|
|
|
841 // we do not block the current thread.
|
|
|
842 if (compilation_is_in_queue(method, osr_bci)) {
|
|
|
843 // We may want to decay our counter a bit here to prevent
|
|
|
844 // multiple denied requests for compilation. This is an
|
|
|
845 // open compilation policy issue. Note: The other possibility,
|
|
|
846 // in the case that this is a blocking compile request, is to have
|
|
|
847 // all subsequent blocking requesters wait for completion of
|
|
|
848 // ongoing compiles. Note that in this case we'll need a protocol
|
|
|
849 // for freeing the associated compile tasks. [Or we could have
|
|
|
850 // a single static monitor on which all these waiters sleep.]
|
|
|
851 return;
|
|
|
852 }
|
|
|
853
|
|
|
854 // Outputs from the following MutexLocker block:
|
|
|
855 CompileTask* task = NULL;
|
|
|
856 bool blocking = false;
|
|
|
857
|
|
|
858 // Acquire our lock.
|
|
|
859 {
|
|
|
860 MutexLocker locker(_method_queue->lock(), THREAD);
|
|
|
861
|
|
|
862 // Make sure the method has not slipped into the queues since
|
|
|
863 // last we checked; note that those checks were "fast bail-outs".
|
|
|
864 // Here we need to be more careful, see 14012000 below.
|
|
|
865 if (compilation_is_in_queue(method, osr_bci)) {
|
|
|
866 return;
|
|
|
867 }
|
|
|
868
|
|
|
869 // We need to check again to see if the compilation has
|
|
|
870 // completed. A previous compilation may have registered
|
|
|
871 // some result.
|
|
|
872 if (compilation_is_complete(method, osr_bci, comp_level)) {
|
|
|
873 return;
|
|
|
874 }
|
|
|
875
|
|
|
876 // We now know that this compilation is not pending, complete,
|
|
|
877 // or prohibited. Assign a compile_id to this compilation
|
|
|
878 // and check to see if it is in our [Start..Stop) range.
|
|
|
879 uint compile_id = assign_compile_id(method, osr_bci);
|
|
|
880 if (compile_id == 0) {
|
|
|
881 // The compilation falls outside the allowed range.
|
|
|
882 return;
|
|
|
883 }
|
|
|
884
|
|
|
885 // Should this thread wait for completion of the compile?
|
|
|
886 blocking = is_compile_blocking(method, osr_bci);
|
|
|
887
|
|
|
888 // We will enter the compilation in the queue.
|
|
|
889 // 14012000: Note that this sets the queued_for_compile bits in
|
|
|
890 // the target method. We can now reason that a method cannot be
|
|
|
891 // queued for compilation more than once, as follows:
|
|
|
892 // Before a thread queues a task for compilation, it first acquires
|
|
|
893 // the compile queue lock, then checks if the method's queued bits
|
|
|
894 // are set or it has already been compiled. Thus there can not be two
|
|
|
895 // instances of a compilation task for the same method on the
|
|
|
896 // compilation queue. Consider now the case where the compilation
|
|
|
897 // thread has already removed a task for that method from the queue
|
|
|
898 // and is in the midst of compiling it. In this case, the
|
|
|
899 // queued_for_compile bits must be set in the method (and these
|
|
|
900 // will be visible to the current thread, since the bits were set
|
|
|
901 // under protection of the compile queue lock, which we hold now.
|
|
|
902 // When the compilation completes, the compiler thread first sets
|
|
|
903 // the compilation result and then clears the queued_for_compile
|
|
|
904 // bits. Neither of these actions are protected by a barrier (or done
|
|
|
905 // under the protection of a lock), so the only guarantee we have
|
|
|
906 // (on machines with TSO (Total Store Order)) is that these values
|
|
|
907 // will update in that order. As a result, the only combinations of
|
|
|
908 // these bits that the current thread will see are, in temporal order:
|
|
|
909 // <RESULT, QUEUE> :
|
|
|
910 // <0, 1> : in compile queue, but not yet compiled
|
|
|
911 // <1, 1> : compiled but queue bit not cleared
|
|
|
912 // <1, 0> : compiled and queue bit cleared
|
|
|
913 // Because we first check the queue bits then check the result bits,
|
|
|
914 // we are assured that we cannot introduce a duplicate task.
|
|
|
915 // Note that if we did the tests in the reverse order (i.e. check
|
|
|
916 // result then check queued bit), we could get the result bit before
|
|
|
917 // the compilation completed, and the queue bit after the compilation
|
|
|
918 // completed, and end up introducing a "duplicate" (redundant) task.
|
|
|
919 // In that case, the compiler thread should first check if a method
|
|
|
920 // has already been compiled before trying to compile it.
|
|
|
921 // NOTE: in the event that there are multiple compiler threads and
|
|
|
922 // there is de-optimization/recompilation, things will get hairy,
|
|
|
923 // and in that case it's best to protect both the testing (here) of
|
|
|
924 // these bits, and their updating (here and elsewhere) under a
|
|
|
925 // common lock.
|
|
|
926 task = create_compile_task(_method_queue,
|
|
|
927 compile_id, method,
|
|
|
928 osr_bci, comp_level,
|
|
|
929 hot_method, hot_count, comment,
|
|
|
930 blocking);
|
|
|
931 }
|
|
|
932
|
|
|
933 if (blocking) {
|
|
|
934 wait_for_completion(task);
|
|
|
935 }
|
|
|
936 }
|
|
|
937
|
|
|
938
|
|
|
939 nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
|
|
|
940 methodHandle hot_method, int hot_count,
|
|
|
941 const char* comment, TRAPS) {
|
|
|
942 // make sure arguments make sense
|
|
|
943 assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
|
|
|
944 assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
|
|
|
945 assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
|
|
|
946 assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
|
|
|
947
|
|
|
948 int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci);
|
|
|
949
|
|
|
950 #ifdef TIERED
|
|
|
951 if (TieredCompilation && StressTieredRuntime) {
|
|
|
952 static int flipper = 0;
|
|
|
953 if (is_even(flipper++)) {
|
|
|
954 comp_level = CompLevel_fast_compile;
|
|
|
955 } else {
|
|
|
956 comp_level = CompLevel_full_optimization;
|
|
|
957 }
|
|
|
958 }
|
|
|
959 #ifdef SPARC
|
|
|
960 // QQQ FIX ME
|
|
|
961 // C2 only returns long results in G1 and c1 doesn't understand so disallow c2
|
|
|
962 // compiles of long results
|
|
|
963 if (TieredCompilation && method()->result_type() == T_LONG) {
|
|
|
964 comp_level = CompLevel_fast_compile;
|
|
|
965 }
|
|
|
966 #endif // SPARC
|
|
|
967 #endif // TIERED
|
|
|
968
|
|
|
969 // return quickly if possible
|
|
|
970
|
|
|
971 // lock, make sure that the compilation
|
|
|
972 // isn't prohibited in a straightforward way.
|
|
|
973
|
|
|
974 if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
|
|
|
975 return NULL;
|
|
|
976 }
|
|
|
977
|
|
|
978 if (osr_bci == InvocationEntryBci) {
|
|
|
979 // standard compilation
|
|
|
980 nmethod* method_code = method->code();
|
|
|
981 if (method_code != NULL
|
|
|
982 #ifdef TIERED
|
|
|
983 && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile )
|
|
|
984 #endif // TIERED
|
|
|
985 ) {
|
|
|
986 return method_code;
|
|
|
987 }
|
|
|
988 if (method->is_not_compilable(comp_level)) return NULL;
|
|
|
989 } else {
|
|
|
990 // osr compilation
|
|
|
991 #ifndef TIERED
|
|
|
992 // seems like an assert of dubious value
|
|
|
993 assert(comp_level == CompLevel_full_optimization,
|
|
|
994 "all OSR compiles are assumed to be at a single compilation lavel");
|
|
|
995 #endif // TIERED
|
|
|
996 nmethod* nm = method->lookup_osr_nmethod_for(osr_bci);
|
|
|
997 if (nm != NULL) return nm;
|
|
|
998 if (method->is_not_osr_compilable()) return NULL;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
|
|
|
1002 // some prerequisites that are compiler specific
|
|
|
1003 if (compiler(comp_level)->is_c2()) {
|
|
|
1004 method->constants()->resolve_string_constants(CHECK_0);
|
|
|
1005 // Resolve all classes seen in the signature of the method
|
|
|
1006 // we are compiling.
|
|
|
1007 methodOopDesc::load_signature_classes(method, CHECK_0);
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 // If the method is native, do the lookup in the thread requesting
|
|
|
1011 // the compilation. Native lookups can load code, which is not
|
|
|
1012 // permitted during compilation.
|
|
|
1013 //
|
|
|
1014 // Note: A native method implies non-osr compilation which is
|
|
|
1015 // checked with an assertion at the entry of this method.
|
|
|
1016 if (method->is_native()) {
|
|
|
1017 bool in_base_library;
|
|
|
1018 address adr = NativeLookup::lookup(method, in_base_library, THREAD);
|
|
|
1019 if (HAS_PENDING_EXCEPTION) {
|
|
|
1020 // In case of an exception looking up the method, we just forget
|
|
|
1021 // about it. The interpreter will kick-in and throw the exception.
|
|
|
1022 method->set_not_compilable(); // implies is_not_osr_compilable()
|
|
|
1023 CLEAR_PENDING_EXCEPTION;
|
|
|
1024 return NULL;
|
|
|
1025 }
|
|
|
1026 assert(method->has_native_function(), "must have native code by now");
|
|
|
1027 }
|
|
|
1028
|
|
|
1029 // RedefineClasses() has replaced this method; just return
|
|
|
1030 if (method->is_old()) {
|
|
|
1031 return NULL;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 // JVMTI -- post_compile_event requires jmethod_id() that may require
|
|
|
1035 // a lock the compiling thread can not acquire. Prefetch it here.
|
|
|
1036 if (JvmtiExport::should_post_compiled_method_load()) {
|
|
|
1037 method->jmethod_id();
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 // do the compilation
|
|
|
1041 if (method->is_native()) {
|
|
|
1042 if (!PreferInterpreterNativeStubs) {
|
|
|
1043 (void) AdapterHandlerLibrary::create_native_wrapper(method);
|
|
|
1044 } else {
|
|
|
1045 return NULL;
|
|
|
1046 }
|
|
|
1047 } else {
|
|
|
1048 compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 // return requested nmethod
|
|
|
1052 return osr_bci == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci);
|
|
|
1053 }
|
|
|
1054
|
|
|
1055
|
|
|
1056 // ------------------------------------------------------------------
|
|
|
1057 // CompileBroker::compilation_is_complete
|
|
|
1058 //
|
|
|
1059 // See if compilation of this method is already complete.
|
|
|
1060 bool CompileBroker::compilation_is_complete(methodHandle method,
|
|
|
1061 int osr_bci,
|
|
|
1062 int comp_level) {
|
|
|
1063 bool is_osr = (osr_bci != standard_entry_bci);
|
|
|
1064 if (is_osr) {
|
|
|
1065 if (method->is_not_osr_compilable()) {
|
|
|
1066 return true;
|
|
|
1067 } else {
|
|
|
1068 nmethod* result = method->lookup_osr_nmethod_for(osr_bci);
|
|
|
1069 return (result != NULL);
|
|
|
1070 }
|
|
|
1071 } else {
|
|
|
1072 if (method->is_not_compilable(comp_level)) {
|
|
|
1073 return true;
|
|
|
1074 } else {
|
|
|
1075 nmethod* result = method->code();
|
|
|
1076 if (result == NULL) return false;
|
|
|
1077 #ifdef TIERED
|
|
|
1078 if (comp_level == CompLevel_fast_compile) {
|
|
|
1079 // At worst the code is from c1
|
|
|
1080 return true;
|
|
|
1081 }
|
|
|
1082 // comp level must be full opt
|
|
|
1083 return result->is_compiled_by_c2();
|
|
|
1084 #endif // TIERED
|
|
|
1085 return true;
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088 }
|
|
|
1089
|
|
|
1090
|
|
|
1091 // ------------------------------------------------------------------
|
|
|
1092 // CompileBroker::compilation_is_in_queue
|
|
|
1093 //
|
|
|
1094 // See if this compilation is already requested.
|
|
|
1095 //
|
|
|
1096 // Implementation note: there is only a single "is in queue" bit
|
|
|
1097 // for each method. This means that the check below is overly
|
|
|
1098 // conservative in the sense that an osr compilation in the queue
|
|
|
1099 // will block a normal compilation from entering the queue (and vice
|
|
|
1100 // versa). This can be remedied by a full queue search to disambiguate
|
|
|
1101 // cases. If it is deemed profitible, this may be done.
|
|
|
1102 bool CompileBroker::compilation_is_in_queue(methodHandle method,
|
|
|
1103 int osr_bci) {
|
|
|
1104 return method->queued_for_compilation();
|
|
|
1105 }
|
|
|
1106
|
|
|
1107
|
|
|
1108 // ------------------------------------------------------------------
|
|
|
1109 // CompileBroker::compilation_is_prohibited
|
|
|
1110 //
|
|
|
1111 // See if this compilation is not allowed.
|
|
|
1112 bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
|
|
|
1113 bool is_native = method->is_native();
|
|
|
1114 // Some compilers may not support the compilation of natives.
|
|
|
1115 // QQQ this needs some work ought to only record not compilable at
|
|
|
1116 // the specified level
|
|
|
1117 if (is_native &&
|
|
|
1118 (!CICompileNatives || !compiler(comp_level)->supports_native())) {
|
|
|
1119 method->set_not_compilable();
|
|
|
1120 return true;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 bool is_osr = (osr_bci != standard_entry_bci);
|
|
|
1124 // Some compilers may not support on stack replacement.
|
|
|
1125 if (is_osr &&
|
|
|
1126 (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
|
|
|
1127 method->set_not_osr_compilable();
|
|
|
1128 return true;
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 // The method may be explicitly excluded by the user.
|
|
|
1132 bool quietly;
|
|
|
1133 if (CompilerOracle::should_exclude(method, quietly)) {
|
|
|
1134 if (!quietly) {
|
|
|
1135 // This does not happen quietly...
|
|
|
1136 ResourceMark rm;
|
|
|
1137 tty->print("### Excluding %s:%s",
|
|
|
1138 method->is_native() ? "generation of native wrapper" : "compile",
|
|
|
1139 (method->is_static() ? " static" : ""));
|
|
|
1140 method->print_short_name(tty);
|
|
|
1141 tty->cr();
|
|
|
1142 }
|
|
|
1143 method->set_not_compilable();
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 return false;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149
|
|
|
1150 // ------------------------------------------------------------------
|
|
|
1151 // CompileBroker::assign_compile_id
|
|
|
1152 //
|
|
|
1153 // Assign a serialized id number to this compilation request. If the
|
|
|
1154 // number falls out of the allowed range, return a 0. OSR
|
|
|
1155 // compilations may be numbered separately from regular compilations
|
|
|
1156 // if certain debugging flags are used.
|
|
|
1157 uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
|
|
|
1158 assert(_method_queue->lock()->owner() == JavaThread::current(),
|
|
|
1159 "must hold the compilation queue lock");
|
|
|
1160 bool is_osr = (osr_bci != standard_entry_bci);
|
|
|
1161 assert(!method->is_native(), "no longer compile natives");
|
|
|
1162 uint id;
|
|
|
1163 if (CICountOSR && is_osr) {
|
|
|
1164 id = ++_osr_compilation_id;
|
|
|
1165 if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
|
|
|
1166 return id;
|
|
|
1167 }
|
|
|
1168 } else {
|
|
|
1169 id = ++_compilation_id;
|
|
|
1170 if ((uint)CIStart <= id && id < (uint)CIStop) {
|
|
|
1171 return id;
|
|
|
1172 }
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 // Method was not in the appropriate compilation range.
|
|
|
1176 method->set_not_compilable();
|
|
|
1177 return 0;
|
|
|
1178 }
|
|
|
1179
|
|
|
1180
|
|
|
1181 // ------------------------------------------------------------------
|
|
|
1182 // CompileBroker::is_compile_blocking
|
|
|
1183 //
|
|
|
1184 // Should the current thread be blocked until this compilation request
|
|
|
1185 // has been fulfilled?
|
|
|
1186 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
|
|
|
1187 return !BackgroundCompilation;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190
|
|
|
1191 // ------------------------------------------------------------------
|
|
|
1192 // CompileBroker::preload_classes
|
|
|
1193 void CompileBroker::preload_classes(methodHandle method, TRAPS) {
|
|
|
1194 // Move this code over from c1_Compiler.cpp
|
|
|
1195 ShouldNotReachHere();
|
|
|
1196 }
|
|
|
1197
|
|
|
1198
|
|
|
1199 // ------------------------------------------------------------------
|
|
|
1200 // CompileBroker::create_compile_task
|
|
|
1201 //
|
|
|
1202 // Create a CompileTask object representing the current request for
|
|
|
1203 // compilation. Add this task to the queue.
|
|
|
1204 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
|
|
|
1205 int compile_id,
|
|
|
1206 methodHandle method,
|
|
|
1207 int osr_bci,
|
|
|
1208 int comp_level,
|
|
|
1209 methodHandle hot_method,
|
|
|
1210 int hot_count,
|
|
|
1211 const char* comment,
|
|
|
1212 bool blocking) {
|
|
|
1213 CompileTask* new_task = allocate_task();
|
|
|
1214 new_task->initialize(compile_id, method, osr_bci, comp_level,
|
|
|
1215 hot_method, hot_count, comment,
|
|
|
1216 blocking);
|
|
|
1217 queue->add(new_task);
|
|
|
1218 return new_task;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221
|
|
|
1222 // ------------------------------------------------------------------
|
|
|
1223 // CompileBroker::allocate_task
|
|
|
1224 //
|
|
|
1225 // Allocate a CompileTask, from the free list if possible.
|
|
|
1226 CompileTask* CompileBroker::allocate_task() {
|
|
|
1227 MutexLocker locker(CompileTaskAlloc_lock);
|
|
|
1228 CompileTask* task = NULL;
|
|
|
1229 if (_task_free_list != NULL) {
|
|
|
1230 task = _task_free_list;
|
|
|
1231 _task_free_list = task->next();
|
|
|
1232 task->set_next(NULL);
|
|
|
1233 } else {
|
|
|
1234 task = new CompileTask();
|
|
|
1235 task->set_next(NULL);
|
|
|
1236 }
|
|
|
1237 return task;
|
|
|
1238 }
|
|
|
1239
|
|
|
1240
|
|
|
1241 // ------------------------------------------------------------------
|
|
|
1242 // CompileBroker::free_task
|
|
|
1243 //
|
|
|
1244 // Add a task to the free list.
|
|
|
1245 void CompileBroker::free_task(CompileTask* task) {
|
|
|
1246 MutexLocker locker(CompileTaskAlloc_lock);
|
|
|
1247 task->free();
|
|
|
1248 task->set_next(_task_free_list);
|
|
|
1249 _task_free_list = task;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252
|
|
|
1253 // ------------------------------------------------------------------
|
|
|
1254 // CompileBroker::wait_for_completion
|
|
|
1255 //
|
|
|
1256 // Wait for the given method CompileTask to complete.
|
|
|
1257 void CompileBroker::wait_for_completion(CompileTask* task) {
|
|
|
1258 if (CIPrintCompileQueue) {
|
|
|
1259 tty->print_cr("BLOCKING FOR COMPILE");
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 assert(task->is_blocking(), "can only wait on blocking task");
|
|
|
1263
|
|
|
1264 JavaThread *thread = JavaThread::current();
|
|
|
1265 thread->set_blocked_on_compilation(true);
|
|
|
1266
|
|
|
1267 methodHandle method(thread,
|
|
|
1268 (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
1269 {
|
|
|
1270 MutexLocker waiter(task->lock(), thread);
|
|
|
1271
|
|
|
1272 while (!task->is_complete())
|
|
|
1273 task->lock()->wait();
|
|
|
1274 }
|
|
|
1275 // It is harmless to check this status without the lock, because
|
|
|
1276 // completion is a stable property (until the task object is recycled).
|
|
|
1277 assert(task->is_complete(), "Compilation should have completed");
|
|
|
1278 assert(task->code_handle() == NULL, "must be reset");
|
|
|
1279
|
|
|
1280 thread->set_blocked_on_compilation(false);
|
|
|
1281
|
|
|
1282 // By convention, the waiter is responsible for recycling a
|
|
|
1283 // blocking CompileTask. Since there is only one waiter ever
|
|
|
1284 // waiting on a CompileTask, we know that no one else will
|
|
|
1285 // be using this CompileTask; we can free it.
|
|
|
1286 free_task(task);
|
|
|
1287 }
|
|
|
1288
|
|
|
1289 // ------------------------------------------------------------------
|
|
|
1290 // CompileBroker::compiler_thread_loop
|
|
|
1291 //
|
|
|
1292 // The main loop run by a CompilerThread.
|
|
|
1293 void CompileBroker::compiler_thread_loop() {
|
|
|
1294 CompilerThread* thread = CompilerThread::current();
|
|
|
1295 CompileQueue* queue = thread->queue();
|
|
|
1296
|
|
|
1297 // For the thread that initializes the ciObjectFactory
|
|
|
1298 // this resource mark holds all the shared objects
|
|
|
1299 ResourceMark rm;
|
|
|
1300
|
|
|
1301 // First thread to get here will initialize the compiler interface
|
|
|
1302
|
|
|
1303 if (!ciObjectFactory::is_initialized()) {
|
|
|
1304 ASSERT_IN_VM;
|
|
|
1305 MutexLocker only_one (CompileThread_lock, thread);
|
|
|
1306 if (!ciObjectFactory::is_initialized()) {
|
|
|
1307 ciObjectFactory::initialize();
|
|
|
1308 }
|
|
|
1309 }
|
|
|
1310
|
|
|
1311 // Open a log.
|
|
|
1312 if (LogCompilation) {
|
|
|
1313 init_compiler_thread_log();
|
|
|
1314 }
|
|
|
1315 CompileLog* log = thread->log();
|
|
|
1316 if (log != NULL) {
|
|
|
1317 log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
|
|
|
1318 os::current_thread_id(),
|
|
|
1319 os::current_process_id());
|
|
|
1320 log->stamp();
|
|
|
1321 log->end_elem();
|
|
|
1322 }
|
|
|
1323
|
|
|
1324 while (true) {
|
|
|
1325 {
|
|
|
1326 // We need this HandleMark to avoid leaking VM handles.
|
|
|
1327 HandleMark hm(thread);
|
|
|
1328 if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
|
|
|
1329 // The CodeCache is full. Print out warning and disable compilation.
|
|
|
1330 UseInterpreter = true;
|
|
|
1331 if (UseCompiler || AlwaysCompileLoopMethods ) {
|
|
|
1332 if (log != NULL) {
|
|
|
1333 log->begin_elem("code_cache_full");
|
|
|
1334 log->stamp();
|
|
|
1335 log->end_elem();
|
|
|
1336 }
|
|
|
1337 #ifndef PRODUCT
|
|
|
1338 warning("CodeCache is full. Compiler has been disabled");
|
|
|
1339 if (CompileTheWorld || ExitOnFullCodeCache) {
|
|
|
1340 before_exit(thread);
|
|
|
1341 exit_globals(); // will delete tty
|
|
|
1342 vm_direct_exit(CompileTheWorld ? 0 : 1);
|
|
|
1343 }
|
|
|
1344 #endif
|
|
|
1345 UseCompiler = false;
|
|
|
1346 AlwaysCompileLoopMethods = false;
|
|
|
1347 }
|
|
|
1348 }
|
|
|
1349
|
|
|
1350 CompileTask* task = queue->get();
|
|
|
1351
|
|
|
1352 // Give compiler threads an extra quanta. They tend to be bursty and
|
|
|
1353 // this helps the compiler to finish up the job.
|
|
|
1354 if( CompilerThreadHintNoPreempt )
|
|
|
1355 os::hint_no_preempt();
|
|
|
1356
|
|
|
1357 // trace per thread time and compile statistics
|
|
|
1358 CompilerCounters* counters = ((CompilerThread*)thread)->counters();
|
|
|
1359 PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
|
|
|
1360
|
|
|
1361 // Assign the task to the current thread. Mark this compilation
|
|
|
1362 // thread as active for the profiler.
|
|
|
1363 CompileTaskWrapper ctw(task);
|
|
|
1364 nmethodLocker result_handle; // (handle for the nmethod produced by this task)
|
|
|
1365 task->set_code_handle(&result_handle);
|
|
|
1366 methodHandle method(thread,
|
|
|
1367 (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
1368
|
|
|
1369 // Never compile a method if breakpoints are present in it
|
|
|
1370 if (method()->number_of_breakpoints() == 0) {
|
|
|
1371 // Compile the method.
|
|
|
1372 if (UseCompiler || AlwaysCompileLoopMethods) {
|
|
|
1373 #ifdef COMPILER1
|
|
|
1374 // Allow repeating compilations for the purpose of benchmarking
|
|
|
1375 // compile speed. This is not useful for customers.
|
|
|
1376 if (CompilationRepeat != 0) {
|
|
|
1377 int compile_count = CompilationRepeat;
|
|
|
1378 while (compile_count > 0) {
|
|
|
1379 invoke_compiler_on_method(task);
|
|
|
1380 nmethod* nm = method->code();
|
|
|
1381 if (nm != NULL) {
|
|
|
1382 nm->make_zombie();
|
|
|
1383 method->clear_code();
|
|
|
1384 }
|
|
|
1385 compile_count--;
|
|
|
1386 }
|
|
|
1387 }
|
|
|
1388 #endif /* COMPILER1 */
|
|
|
1389 invoke_compiler_on_method(task);
|
|
|
1390 } else {
|
|
|
1391 // After compilation is disabled, remove remaining methods from queue
|
|
|
1392 method->clear_queued_for_compilation();
|
|
|
1393 }
|
|
|
1394 }
|
|
|
1395 }
|
|
|
1396 }
|
|
|
1397 }
|
|
|
1398
|
|
|
1399
|
|
|
1400 // ------------------------------------------------------------------
|
|
|
1401 // CompileBroker::init_compiler_thread_log
|
|
|
1402 //
|
|
|
1403 // Set up state required by +LogCompilation.
|
|
|
1404 void CompileBroker::init_compiler_thread_log() {
|
|
|
1405 CompilerThread* thread = CompilerThread::current();
|
|
|
1406 char fileBuf[4*K];
|
|
|
1407 FILE* fp = NULL;
|
|
|
1408 char* file = NULL;
|
|
|
1409 intx thread_id = os::current_thread_id();
|
|
|
1410 for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
|
|
|
1411 const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
|
|
|
1412 if (dir == NULL) dir = "";
|
|
|
1413 sprintf(fileBuf, "%shs_c" UINTX_FORMAT "_pid%u.log",
|
|
|
1414 dir, thread_id, os::current_process_id());
|
|
|
1415 fp = fopen(fileBuf, "at");
|
|
|
1416 if (fp != NULL) {
|
|
|
1417 file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
|
|
|
1418 strcpy(file, fileBuf);
|
|
|
1419 break;
|
|
|
1420 }
|
|
|
1421 }
|
|
|
1422 if (fp == NULL) {
|
|
|
1423 warning("Cannot open log file: %s", fileBuf);
|
|
|
1424 } else {
|
|
|
1425 if (LogCompilation && Verbose)
|
|
|
1426 tty->print_cr("Opening compilation log %s", file);
|
|
|
1427 CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
|
|
|
1428 thread->init_log(log);
|
|
|
1429
|
|
|
1430 if (xtty != NULL) {
|
|
|
1431 ttyLocker ttyl;
|
|
|
1432
|
|
|
1433 // Record any per thread log files
|
|
|
1434 xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
|
|
|
1435 }
|
|
|
1436 }
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 // ------------------------------------------------------------------
|
|
|
1440 // CompileBroker::set_should_block
|
|
|
1441 //
|
|
|
1442 // Set _should_block.
|
|
|
1443 // Call this from the VM, with Threads_lock held and a safepoint requested.
|
|
|
1444 void CompileBroker::set_should_block() {
|
|
|
1445 assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
|
|
|
1446 assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
|
|
|
1447 #ifndef PRODUCT
|
|
|
1448 if (PrintCompilation && (Verbose || WizardMode))
|
|
|
1449 tty->print_cr("notifying compiler thread pool to block");
|
|
|
1450 #endif
|
|
|
1451 _should_block = true;
|
|
|
1452 }
|
|
|
1453
|
|
|
1454 // ------------------------------------------------------------------
|
|
|
1455 // CompileBroker::maybe_block
|
|
|
1456 //
|
|
|
1457 // Call this from the compiler at convenient points, to poll for _should_block.
|
|
|
1458 void CompileBroker::maybe_block() {
|
|
|
1459 if (_should_block) {
|
|
|
1460 #ifndef PRODUCT
|
|
|
1461 if (PrintCompilation && (Verbose || WizardMode))
|
|
|
1462 tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
|
|
|
1463 #endif
|
|
|
1464 ThreadInVMfromNative tivfn(JavaThread::current());
|
|
|
1465 }
|
|
|
1466 }
|
|
|
1467
|
|
|
1468
|
|
|
1469 // ------------------------------------------------------------------
|
|
|
1470 // CompileBroker::invoke_compiler_on_method
|
|
|
1471 //
|
|
|
1472 // Compile a method.
|
|
|
1473 //
|
|
|
1474 void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
|
|
|
1475 if (PrintCompilation) {
|
|
|
1476 ResourceMark rm;
|
|
|
1477 task->print_line();
|
|
|
1478 }
|
|
|
1479 elapsedTimer time;
|
|
|
1480
|
|
|
1481 CompilerThread* thread = CompilerThread::current();
|
|
|
1482 ResourceMark rm(thread);
|
|
|
1483
|
|
|
1484 // Common flags.
|
|
|
1485 uint compile_id = task->compile_id();
|
|
|
1486 int osr_bci = task->osr_bci();
|
|
|
1487 bool is_osr = (osr_bci != standard_entry_bci);
|
|
|
1488 bool should_log = (thread->log() != NULL);
|
|
|
1489 bool should_break = false;
|
|
|
1490 {
|
|
|
1491 // create the handle inside it's own block so it can't
|
|
|
1492 // accidentally be referenced once the thread transitions to
|
|
|
1493 // native. The NoHandleMark before the transition should catch
|
|
|
1494 // any cases where this occurs in the future.
|
|
|
1495 methodHandle method(thread,
|
|
|
1496 (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
1497 should_break = check_break_at(method, compile_id, is_osr);
|
|
|
1498 if (should_log && !CompilerOracle::should_log(method)) {
|
|
|
1499 should_log = false;
|
|
|
1500 }
|
|
|
1501 assert(!method->is_native(), "no longer compile natives");
|
|
|
1502
|
|
|
1503 // Save information about this method in case of failure.
|
|
|
1504 set_last_compile(thread, method, is_osr, task->comp_level());
|
|
|
1505
|
|
|
1506 DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 // Allocate a new set of JNI handles.
|
|
|
1510 push_jni_handle_block();
|
|
|
1511 jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
|
|
|
1512 int compilable = ciEnv::MethodCompilable;
|
|
|
1513 {
|
|
|
1514 int system_dictionary_modification_counter;
|
|
|
1515 {
|
|
|
1516 MutexLocker locker(Compile_lock, thread);
|
|
|
1517 system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
|
|
|
1518 }
|
|
|
1519
|
|
|
1520 NoHandleMark nhm;
|
|
|
1521 ThreadToNativeFromVM ttn(thread);
|
|
|
1522
|
|
|
1523 ciEnv ci_env(task, system_dictionary_modification_counter);
|
|
|
1524 if (should_break) {
|
|
|
1525 ci_env.set_break_at_compile(true);
|
|
|
1526 }
|
|
|
1527 if (should_log) {
|
|
|
1528 ci_env.set_log(thread->log());
|
|
|
1529 }
|
|
|
1530 assert(thread->env() == &ci_env, "set by ci_env");
|
|
|
1531 // The thread-env() field is cleared in ~CompileTaskWrapper.
|
|
|
1532
|
|
|
1533 ciMethod* target = ci_env.get_method_from_handle(target_handle);
|
|
|
1534
|
|
|
1535 TraceTime t1("compilation", &time);
|
|
|
1536
|
|
|
1537 compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
|
|
|
1538
|
|
|
1539 if (!ci_env.failing() && task->code() == NULL) {
|
|
|
1540 //assert(false, "compiler should always document failure");
|
|
|
1541 // The compiler elected, without comment, not to register a result.
|
|
|
1542 // Do not attempt further compilations of this method.
|
|
|
1543 ci_env.record_method_not_compilable("compile failed");
|
|
|
1544 }
|
|
|
1545
|
|
|
1546 if (ci_env.failing()) {
|
|
|
1547 // Copy this bit to the enclosing block:
|
|
|
1548 compilable = ci_env.compilable();
|
|
|
1549 if (PrintCompilation) {
|
|
|
1550 const char* reason = ci_env.failure_reason();
|
|
|
1551 if (compilable == ciEnv::MethodCompilable_not_at_tier) {
|
|
|
1552 if (is_highest_tier_compile(ci_env.comp_level())) {
|
|
|
1553 // Already at highest tier, promote to not compilable.
|
|
|
1554 compilable = ciEnv::MethodCompilable_never;
|
|
|
1555 } else {
|
|
|
1556 tty->print_cr("%3d COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
|
|
|
1557 }
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 if (compilable == ciEnv::MethodCompilable_never) {
|
|
|
1561 tty->print_cr("%3d COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
|
|
|
1562 } else if (compilable == ciEnv::MethodCompilable) {
|
|
|
1563 tty->print_cr("%3d COMPILE SKIPPED: %s", compile_id, reason);
|
|
|
1564 }
|
|
|
1565 }
|
|
|
1566 } else {
|
|
|
1567 task->mark_success();
|
|
|
1568 task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
|
|
|
1569 }
|
|
|
1570 }
|
|
|
1571 pop_jni_handle_block();
|
|
|
1572
|
|
|
1573 methodHandle method(thread,
|
|
|
1574 (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
1575
|
|
|
1576 DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
|
|
|
1577
|
|
|
1578 collect_statistics(thread, time, task);
|
|
|
1579
|
|
|
1580 if (compilable == ciEnv::MethodCompilable_never) {
|
|
|
1581 if (is_osr) {
|
|
|
1582 method->set_not_osr_compilable();
|
|
|
1583 } else {
|
|
|
1584 method->set_not_compilable();
|
|
|
1585 }
|
|
|
1586 } else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
|
|
|
1587 method->set_not_compilable(task->comp_level());
|
|
|
1588 }
|
|
|
1589
|
|
|
1590 // Note that the queued_for_compilation bits are cleared without
|
|
|
1591 // protection of a mutex. [They were set by the requester thread,
|
|
|
1592 // when adding the task to the complie queue -- at which time the
|
|
|
1593 // compile queue lock was held. Subsequently, we acquired the compile
|
|
|
1594 // queue lock to get this task off the compile queue; thus (to belabour
|
|
|
1595 // the point somewhat) our clearing of the bits must be occurring
|
|
|
1596 // only after the setting of the bits. See also 14012000 above.
|
|
|
1597 method->clear_queued_for_compilation();
|
|
|
1598
|
|
|
1599 #ifdef ASSERT
|
|
|
1600 if (CollectedHeap::fired_fake_oom()) {
|
|
|
1601 // The current compile received a fake OOM during compilation so
|
|
|
1602 // go ahead and exit the VM since the test apparently succeeded
|
|
|
1603 tty->print_cr("*** Shutting down VM after successful fake OOM");
|
|
|
1604 vm_exit(0);
|
|
|
1605 }
|
|
|
1606 #endif
|
|
|
1607 }
|
|
|
1608
|
|
|
1609
|
|
|
1610 // ------------------------------------------------------------------
|
|
|
1611 // CompileBroker::set_last_compile
|
|
|
1612 //
|
|
|
1613 // Record this compilation for debugging purposes.
|
|
|
1614 void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
|
|
|
1615 ResourceMark rm;
|
|
|
1616 char* method_name = method->name()->as_C_string();
|
|
|
1617 strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
|
|
|
1618 char current_method[CompilerCounters::cmname_buffer_length];
|
|
|
1619 size_t maxLen = CompilerCounters::cmname_buffer_length;
|
|
|
1620
|
|
|
1621 if (UsePerfData) {
|
|
|
1622 const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
|
|
|
1623
|
|
|
1624 size_t s1len = strlen(class_name);
|
|
|
1625 size_t s2len = strlen(method_name);
|
|
|
1626
|
|
|
1627 // check if we need to truncate the string
|
|
|
1628 if (s1len + s2len + 2 > maxLen) {
|
|
|
1629
|
|
|
1630 // the strategy is to lop off the leading characters of the
|
|
|
1631 // class name and the trailing characters of the method name.
|
|
|
1632
|
|
|
1633 if (s2len + 2 > maxLen) {
|
|
|
1634 // lop of the entire class name string, let snprintf handle
|
|
|
1635 // truncation of the method name.
|
|
|
1636 class_name += s1len; // null string
|
|
|
1637 }
|
|
|
1638 else {
|
|
|
1639 // lop off the extra characters from the front of the class name
|
|
|
1640 class_name += ((s1len + s2len + 2) - maxLen);
|
|
|
1641 }
|
|
|
1642 }
|
|
|
1643
|
|
|
1644 jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 if (CICountOSR && is_osr) {
|
|
|
1648 _last_compile_type = osr_compile;
|
|
|
1649 } else {
|
|
|
1650 _last_compile_type = normal_compile;
|
|
|
1651 }
|
|
|
1652 _last_compile_level = comp_level;
|
|
|
1653
|
|
|
1654 if (UsePerfData) {
|
|
|
1655 CompilerCounters* counters = thread->counters();
|
|
|
1656 counters->set_current_method(current_method);
|
|
|
1657 counters->set_compile_type((jlong)_last_compile_type);
|
|
|
1658 }
|
|
|
1659 }
|
|
|
1660
|
|
|
1661
|
|
|
1662 // ------------------------------------------------------------------
|
|
|
1663 // CompileBroker::push_jni_handle_block
|
|
|
1664 //
|
|
|
1665 // Push on a new block of JNI handles.
|
|
|
1666 void CompileBroker::push_jni_handle_block() {
|
|
|
1667 JavaThread* thread = JavaThread::current();
|
|
|
1668
|
|
|
1669 // Allocate a new block for JNI handles.
|
|
|
1670 // Inlined code from jni_PushLocalFrame()
|
|
|
1671 JNIHandleBlock* java_handles = thread->active_handles();
|
|
|
1672 JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
|
|
|
1673 assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
|
|
|
1674 compile_handles->set_pop_frame_link(java_handles); // make sure java handles get gc'd.
|
|
|
1675 thread->set_active_handles(compile_handles);
|
|
|
1676 }
|
|
|
1677
|
|
|
1678
|
|
|
1679 // ------------------------------------------------------------------
|
|
|
1680 // CompileBroker::pop_jni_handle_block
|
|
|
1681 //
|
|
|
1682 // Pop off the current block of JNI handles.
|
|
|
1683 void CompileBroker::pop_jni_handle_block() {
|
|
|
1684 JavaThread* thread = JavaThread::current();
|
|
|
1685
|
|
|
1686 // Release our JNI handle block
|
|
|
1687 JNIHandleBlock* compile_handles = thread->active_handles();
|
|
|
1688 JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
|
|
|
1689 thread->set_active_handles(java_handles);
|
|
|
1690 compile_handles->set_pop_frame_link(NULL);
|
|
|
1691 JNIHandleBlock::release_block(compile_handles, thread); // may block
|
|
|
1692 }
|
|
|
1693
|
|
|
1694
|
|
|
1695 // ------------------------------------------------------------------
|
|
|
1696 // CompileBroker::check_break_at
|
|
|
1697 //
|
|
|
1698 // Should the compilation break at the current compilation.
|
|
|
1699 bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
|
|
|
1700 if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
|
|
|
1701 return true;
|
|
|
1702 } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
|
|
|
1703 return true;
|
|
|
1704 } else {
|
|
|
1705 return (compile_id == CIBreakAt);
|
|
|
1706 }
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 // ------------------------------------------------------------------
|
|
|
1710 // CompileBroker::collect_statistics
|
|
|
1711 //
|
|
|
1712 // Collect statistics about the compilation.
|
|
|
1713
|
|
|
1714 void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
|
|
|
1715 bool success = task->is_success();
|
|
|
1716 methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
|
|
|
1717 uint compile_id = task->compile_id();
|
|
|
1718 bool is_osr = (task->osr_bci() != standard_entry_bci);
|
|
|
1719 nmethod* code = task->code();
|
|
|
1720 CompilerCounters* counters = thread->counters();
|
|
|
1721
|
|
|
1722 assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
|
|
|
1723 MutexLocker locker(CompileStatistics_lock);
|
|
|
1724
|
|
|
1725 // _perf variables are production performance counters which are
|
|
|
1726 // updated regardless of the setting of the CITime and CITimeEach flags
|
|
|
1727 //
|
|
|
1728 if (!success) {
|
|
|
1729 _total_bailout_count++;
|
|
|
1730 if (UsePerfData) {
|
|
|
1731 _perf_last_failed_method->set_value(counters->current_method());
|
|
|
1732 _perf_last_failed_type->set_value(counters->compile_type());
|
|
|
1733 _perf_total_bailout_count->inc();
|
|
|
1734 }
|
|
|
1735 } else if (code == NULL) {
|
|
|
1736 if (UsePerfData) {
|
|
|
1737 _perf_last_invalidated_method->set_value(counters->current_method());
|
|
|
1738 _perf_last_invalidated_type->set_value(counters->compile_type());
|
|
|
1739 _perf_total_invalidated_count->inc();
|
|
|
1740 }
|
|
|
1741 _total_invalidated_count++;
|
|
|
1742 } else {
|
|
|
1743 // Compilation succeeded
|
|
|
1744
|
|
|
1745 // update compilation ticks - used by the implementation of
|
|
|
1746 // java.lang.management.CompilationMBean
|
|
|
1747 _perf_total_compilation->inc(time.ticks());
|
|
|
1748
|
|
|
1749 if (CITime) {
|
|
|
1750 _t_total_compilation.add(time);
|
|
|
1751 if (is_osr) {
|
|
|
1752 _t_osr_compilation.add(time);
|
|
|
1753 _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
|
|
|
1754 } else {
|
|
|
1755 _t_standard_compilation.add(time);
|
|
|
1756 _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
|
|
|
1757 }
|
|
|
1758 }
|
|
|
1759
|
|
|
1760 if (UsePerfData) {
|
|
|
1761 // save the name of the last method compiled
|
|
|
1762 _perf_last_method->set_value(counters->current_method());
|
|
|
1763 _perf_last_compile_type->set_value(counters->compile_type());
|
|
|
1764 _perf_last_compile_size->set_value(method->code_size() +
|
|
|
1765 task->num_inlined_bytecodes());
|
|
|
1766 if (is_osr) {
|
|
|
1767 _perf_osr_compilation->inc(time.ticks());
|
|
|
1768 _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
|
|
|
1769 } else {
|
|
|
1770 _perf_standard_compilation->inc(time.ticks());
|
|
|
1771 _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
|
|
|
1772 }
|
|
|
1773 }
|
|
|
1774
|
|
|
1775 if (CITimeEach) {
|
|
|
1776 float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
|
|
|
1777 tty->print_cr("%3d seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
|
|
|
1778 compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
|
|
|
1779 }
|
|
|
1780
|
|
|
1781 // Collect counts of successful compilations
|
|
|
1782 _sum_nmethod_size += code->total_size();
|
|
|
1783 _sum_nmethod_code_size += code->code_size();
|
|
|
1784 _total_compile_count++;
|
|
|
1785
|
|
|
1786 if (UsePerfData) {
|
|
|
1787 _perf_sum_nmethod_size->inc(code->total_size());
|
|
|
1788 _perf_sum_nmethod_code_size->inc(code->code_size());
|
|
|
1789 _perf_total_compile_count->inc();
|
|
|
1790 }
|
|
|
1791
|
|
|
1792 if (is_osr) {
|
|
|
1793 if (UsePerfData) _perf_total_osr_compile_count->inc();
|
|
|
1794 _total_osr_compile_count++;
|
|
|
1795 } else {
|
|
|
1796 if (UsePerfData) _perf_total_standard_compile_count->inc();
|
|
|
1797 _total_standard_compile_count++;
|
|
|
1798 }
|
|
|
1799 }
|
|
|
1800 // set the current method for the thread to null
|
|
|
1801 if (UsePerfData) counters->set_current_method("");
|
|
|
1802 }
|
|
|
1803
|
|
|
1804
|
|
|
1805
|
|
|
1806 void CompileBroker::print_times() {
|
|
|
1807 tty->cr();
|
|
|
1808 tty->print_cr("Accumulated compiler times (for compiled methods only)");
|
|
|
1809 tty->print_cr("------------------------------------------------");
|
|
|
1810 //0000000000111111111122222222223333333333444444444455555555556666666666
|
|
|
1811 //0123456789012345678901234567890123456789012345678901234567890123456789
|
|
|
1812 tty->print_cr(" Total compilation time : %6.3f s", CompileBroker::_t_total_compilation.seconds());
|
|
|
1813 tty->print_cr(" Standard compilation : %6.3f s, Average : %2.3f",
|
|
|
1814 CompileBroker::_t_standard_compilation.seconds(),
|
|
|
1815 CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
|
|
|
1816 tty->print_cr(" On stack replacement : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count);
|
|
|
1817 compiler(CompLevel_fast_compile)->print_timers();
|
|
|
1818 if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) {
|
|
|
1819 compiler(CompLevel_highest_tier)->print_timers();
|
|
|
1820 }
|
|
|
1821
|
|
|
1822 tty->cr();
|
|
|
1823 int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
|
|
|
1824 tty->print_cr(" Total compiled bytecodes : %6d bytes", tcb);
|
|
|
1825 tty->print_cr(" Standard compilation : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
|
|
|
1826 tty->print_cr(" On stack replacement : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
|
|
|
1827 int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
|
|
|
1828 tty->print_cr(" Average compilation speed: %6d bytes/s", bps);
|
|
|
1829 tty->cr();
|
|
|
1830 tty->print_cr(" nmethod code size : %6d bytes", CompileBroker::_sum_nmethod_code_size);
|
|
|
1831 tty->print_cr(" nmethod total size : %6d bytes", CompileBroker::_sum_nmethod_size);
|
|
|
1832 }
|
|
|
1833
|
|
|
1834
|
|
|
1835 // Debugging output for failure
|
|
|
1836 void CompileBroker::print_last_compile() {
|
|
|
1837 if ( _last_compile_level != CompLevel_none &&
|
|
|
1838 compiler(_last_compile_level) != NULL &&
|
|
|
1839 _last_method_compiled != NULL &&
|
|
|
1840 _last_compile_type != no_compile) {
|
|
|
1841 if (_last_compile_type == osr_compile) {
|
|
|
1842 tty->print_cr("Last parse: [osr]%d+++(%d) %s",
|
|
|
1843 _osr_compilation_id, _last_compile_level, _last_method_compiled);
|
|
|
1844 } else {
|
|
|
1845 tty->print_cr("Last parse: %d+++(%d) %s",
|
|
|
1846 _compilation_id, _last_compile_level, _last_method_compiled);
|
|
|
1847 }
|
|
|
1848 }
|
|
|
1849 }
|
|
|
1850
|
|
|
1851
|
|
|
1852 void CompileBroker::print_compiler_threads_on(outputStream* st) {
|
|
|
1853 #ifndef PRODUCT
|
|
|
1854 st->print_cr("Compiler thread printing unimplemented.");
|
|
|
1855 st->cr();
|
|
|
1856 #endif
|
|
|
1857 }
|
