src/share/vm/services/diagnosticCommand.cpp

*** 24,33 ****
--- 24,34 ----
  
  #include "precompiled.hpp"
  #include "classfile/classLoaderStats.hpp"
  #include "classfile/compactHashtable.hpp"
  #include "gc_implementation/shared/vmGCOperations.hpp"
+ #include "oops/method.hpp"
  #include "oops/oop.inline.hpp"
  #include "runtime/javaCalls.hpp"
  #include "runtime/os.hpp"
  #include "services/diagnosticArgument.hpp"
  #include "services/diagnosticCommand.hpp"
*** 66,75 ****
--- 67,77 ----
    DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RotateGCLogDCmd>(full_export, true, false));
    DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
    DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
    DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
    DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
+   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<MethodUsageDCmd>(full_export, true, false));
  
    // Enhanced JMX Agent Support
    // These commands won't be exported via the DiagnosticCommandMBean until an
    // appropriate permission is created for them
    uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
*** 727,731 ****
--- 729,765 ----
      return 0;
    }
  }
  
  #endif
+ 
+ class VM_DumpMethodUsage : public VM_Operation {
+ private:
+   outputStream* _out;
+ public:
+   VM_DumpMethodUsage(outputStream* out) {
+     _out = out;
+   }
+ 
+   virtual VMOp_Type type() const { return VMOp_DumpMethodUsage; }
+ 
+   virtual void doit() {
+     Method::print_usage(_out);
+   }
+ };
+ 
+ MethodUsageDCmd::MethodUsageDCmd(outputStream* output, bool heap) :
+                                        DCmdWithParser(output, heap)
+ {}
+ 
+ void MethodUsageDCmd::execute(DCmdSource source, TRAPS) {
+   if (!UnlockDiagnosticVMOptions) {
+     output()->print_cr("VM.method_usage command requires -XX:+UnlockDiagnosticVMOptions");
+     return;
+   }
+   VM_DumpMethodUsage dumper(output());
+   VMThread::execute(&dumper);
+ }
+ 
+ int MethodUsageDCmd::num_arguments() {
+   return 0;
+ }