71 #include "globalDefinitions.hpp"
  72 #include "memory/allocation.hpp"
  73 #include "utilities/decoder.hpp"
  74 
  75 
  76 class ElfStringTable;
  77 class ElfSymbolTable;
  78 class ElfFuncDescTable;
  79 
  80 
  81 // On Solaris/Linux platforms, libjvm.so does contain all private symbols.
  82 // ElfFile is basically an elf file parser, which can lookup the symbol
  83 // that is the nearest to the given address.
  84 // Beware, this code is called from vm error reporting code, when vm is already
  85 // in "error" state, so there are scenarios, lookup will fail. We want this
  86 // part of code to be very defensive, and bait out if anything went wrong.
  87 
  88 class ElfFile: public CHeapObj<mtInternal> {
  89   friend class ElfDecoder;
  90  public:
  91   ElfFile(const char* filepath);
  92   ~ElfFile();
  93 
  94   bool decode(address addr, char* buf, int buflen, int* offset);
  95   const char* filepath() {
  96     return m_filepath;
  97   }
  98 
  99   bool same_elf_file(const char* filepath) {
 100     assert(filepath, "null file path");
 101     assert(m_filepath, "already out of memory");
 102     return (m_filepath && !strcmp(filepath, m_filepath));
 103   }
 104 
 105   NullDecoder::decoder_status get_status() {
 106     return m_status;
 107   }
 108 
 109  private:
 110   // sanity check, if the file is a real elf file
 111   bool is_elf_file(Elf_Ehdr&);

  71 #include "globalDefinitions.hpp"
  72 #include "memory/allocation.hpp"
  73 #include "utilities/decoder.hpp"
  74 
  75 
  76 class ElfStringTable;
  77 class ElfSymbolTable;
  78 class ElfFuncDescTable;
  79 
  80 
  81 // On Solaris/Linux platforms, libjvm.so does contain all private symbols.
  82 // ElfFile is basically an elf file parser, which can lookup the symbol
  83 // that is the nearest to the given address.
  84 // Beware, this code is called from vm error reporting code, when vm is already
  85 // in "error" state, so there are scenarios, lookup will fail. We want this
  86 // part of code to be very defensive, and bait out if anything went wrong.
  87 
  88 class ElfFile: public CHeapObj<mtInternal> {
  89   friend class ElfDecoder;
  90  public:
  91   ElfFile(const char* filepath, bool load_tables);
  92   ~ElfFile();
  93 
  94   bool decode(address addr, char* buf, int buflen, int* offset);
  95   const char* filepath() {
  96     return m_filepath;
  97   }
  98 
  99   bool same_elf_file(const char* filepath) {
 100     assert(filepath, "null file path");
 101     assert(m_filepath, "already out of memory");
 102     return (m_filepath && !strcmp(filepath, m_filepath));
 103   }
 104 
 105   NullDecoder::decoder_status get_status() {
 106     return m_status;
 107   }
 108 
 109  private:
 110   // sanity check, if the file is a real elf file
 111   bool is_elf_file(Elf_Ehdr&);