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nci/suif/suif2b/j2s/j2s_runtime/rt_RT.h

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/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// rt_RT.h

#ifndef RT_RT_H
#define RT_RT_H

#include <stdlib.h>


typedef void      (*ITERCLASSproc)(ClassMetadata *);
typedef boolean_t (*COND_ITERCLASSproc)(ClassMetadata *);

/*
  RT holds global methods and fields, as well as is heavily
  used during initialization of the language implementation.

  */
class RT {
public:

  // Initialize the Runtime
  static void init(int *argc, char **argv);
  // Execute main() method w/ specified arguments
  static void run(ClassMetadata *c, int argc, char **argv);

  static void      showUsage();
  static boolean_t isVerbose();
  
  /*
    Accessors that return location of java.lang.Class
    metadata that is built by Compiler.
  */
  static int             classMetadataNum();   // number
  static ClassMetadata **classMetadataAddr();  // starting addr
  
  // return a UBFSearch instance of the correct size
  static class UBFSearch  *newUBF();

  static void            dumpAllClasses();

  // entry point that handles a process exit
  static void exit(int);


  // Data
  //

  // total number of java.lang.Class's mananged by RTS
  static int classNum;

  
  // Class that manages the allocation of heap memory
  class Heap {
  public:
    static void *alloc(size_t byteNum);
    static void *alloc_atomic(size_t byteNum);
    static void  free(void *);
  private:
    //HIDE_NICE_CLASS(Heap)
      };

  enum {
    // used in Assertions
    RTS_FIRST_TIME = 0,
    RTS_NOT_IMPLEMENTED,

    // well-known offsets into j2s_AllClasses[]
    iArray = 0    //  Array metadata
  };
  
private:
  //HIDE_NICE_CLASS(RT)
  
  static void init2();
  static void init1();
  static void initSignalHandlers();
  static void initSEGV();
  static void initClassIDs();
  static void initRelativeNumbering();
  static void init3();
        
  static void makeAllClasses();
  static void adjustAllClasses();
  static void hashAllClasses();
  
  static void internMetadataStrings();
  static void registerAtExitHandlers();
  static int  filterCargs(int argc, char **argv);
  static struct JArray *CargsToJavaArgs(int argc, int argStart,
                                        char **argv);
        
  static void assertPreInit();
  static void assertPostInit();
  static void assertGlobals();

  static void traverseAllClasses(ITERCLASSproc proc);
  static void traverseSomeClasses (COND_ITERCLASSproc proc);

  // 'true' if rt_Init() completed successfully
  static int  isSuccessfulInit;
  // argv[] index of target executable's args
  static int  argStart;
  // how wordy should we be ?? :)
  static boolean_t _isVerbose;
};

// value written by a successful RT::init() method
#define RT_INIT_FLAG   0xcafe

// ITERCLASSproc's
void icClassID(ClassMetadata *);
void icBuildClass(ClassMetadata *);
void icInternMetadata(ClassMetadata *);
void icDumpMetadata(ClassMetadata *);
void icHashClass(ClassMetadata *md);
void icAdjustMetaClass(ClassMetadata *md);
void icRelativeNumbering(ClassMetadata *md);

// COND_ITERCLASSproc's
boolean_t cicFindJLClass(ClassMetadata *);
boolean_t cicFindJLString(ClassMetadata *);

#endif  // RT_RT_H

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