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comparison src/share/vm/runtime/compilationPolicy.cpp @ 14524:10c4df6767c4

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removed GPU offload interaction with compilation policy
author Doug Simon <doug.simon@oracle.com>
date Thu, 13 Mar 2014 17:48:44 +0100
parents d8041d695d19
children 4ca6dc0799b6
comparison
equal deleted inserted replaced
14523:5e55de0379d9 14524:10c4df6767c4
103 // Don't allow Xcomp to cause compiles in replay mode 103 // Don't allow Xcomp to cause compiles in replay mode
104 if (ReplayCompiles) return false; 104 if (ReplayCompiles) return false;
105 105
106 if (m->has_compiled_code()) return false; // already compiled 106 if (m->has_compiled_code()) return false; // already compiled
107 107
108 if (CompilationPolicy::can_be_offloaded_to_gpu(m)) return true;
109
110 if (!can_be_compiled(m, comp_level)) return false; 108 if (!can_be_compiled(m, comp_level)) return false;
111 109
112 return !UseInterpreter || // must compile all methods 110 return !UseInterpreter || // must compile all methods
113 (UseCompiler && AlwaysCompileLoopMethods && m->has_loops() && CompileBroker::should_compile_new_jobs()); // eagerly compile loop methods 111 (UseCompiler && AlwaysCompileLoopMethods && m->has_loops() && CompileBroker::should_compile_new_jobs()); // eagerly compile loop methods
114 } 112 }
157 } 155 }
158 } else if (is_compile(comp_level)) { 156 } else if (is_compile(comp_level)) {
159 result = !m->is_not_osr_compilable(comp_level); 157 result = !m->is_not_osr_compilable(comp_level);
160 } 158 }
161 return (result && can_be_compiled(m, comp_level)); 159 return (result && can_be_compiled(m, comp_level));
162 }
163
164 bool CompilationPolicy::can_be_offloaded_to_gpu(methodHandle m) {
165 #ifdef GRAAL
166 if (GPUOffload && gpu::initialized_gpus() > 0) {
167 // Check if this method can be off-loaded to GPU.
168 if (m->is_synthetic()) {
169 // A lambda method is a synthetic method.
170 Symbol * klass_name = m->method_holder()->name();
171 Symbol * method_name = m->name();
172 {
173 ResourceMark rm;
174 if (klass_name != NULL) {
175 const char* javaClass = "java/";
176 // Exclude java library classes - for now
177 if (strncmp(klass_name->as_C_string(), javaClass, strlen(javaClass))) {
178 if (method_name != NULL) {
179 const char* lambdaPrefix = "lambda$";
180 char* methodPrefix = strstr(method_name->as_C_string(), lambdaPrefix);
181 if (methodPrefix != 0) {
182 if ((strncmp(lambdaPrefix, methodPrefix, strlen(lambdaPrefix)) == 0)) {
183 if (TraceGPUInteraction) {
184 char buf[O_BUFLEN];
185 tty->print_cr("Selected lambda method %s for GPU offload", m->name_and_sig_as_C_string(buf, O_BUFLEN));
186 }
187 return true;
188 }
189 }
190 }
191 }
192 }
193 }
194 }
195 }
196 #endif
197 return false;
198 } 160 }
199 161
200 bool CompilationPolicy::is_compilation_enabled() { 162 bool CompilationPolicy::is_compilation_enabled() {
201 // NOTE: CompileBroker::should_compile_new_jobs() checks for UseCompiler 163 // NOTE: CompileBroker::should_compile_new_jobs() checks for UseCompiler
202 return !delay_compilation_during_startup() && CompileBroker::should_compile_new_jobs(); 164 return !delay_compilation_during_startup() && CompileBroker::should_compile_new_jobs();