src/share/vm/utilities/ostream.cpp

rev 3510 : 7116786: RFE: Detailed information on VerifyErrors
Summary: Provide additional detail in VerifyError messages
Reviewed-by:

*** 235,246 ****
    }
    print_raw(suffix);
    return;
  }
  
! void outputStream::indent() {
    while (_position < _indentation) sp();
  }
  
  void outputStream::print_jlong(jlong value) {
    // N.B. Same as INT64_FORMAT
    print(os::jlong_format_specifier(), value);
--- 235,247 ----
    }
    print_raw(suffix);
    return;
  }
  
! outputStream& outputStream::indent() {
    while (_position < _indentation) sp();
+   return *this;
  }
  
  void outputStream::print_jlong(jlong value) {
    // N.B. Same as INT64_FORMAT
    print(os::jlong_format_specifier(), value);
*** 249,258 ****
--- 250,300 ----
  void outputStream::print_julong(julong value) {
    // N.B. Same as UINT64_FORMAT
    print(os::julong_format_specifier(), value);
  }
  
+ /**
+  * This prints out hex data in a 'windbg' or 'xxd' form, where each line is:
+  *   <hex-address>: 8 * <hex-halfword> <ascii translation (optional)>
+  * example:
+  * 0000000: 7f44 4f46 0102 0102 0000 0000 0000 0000  .DOF............
+  * 0000010: 0000 0000 0000 0040 0000 0020 0000 0005  .......@... ....
+  * 0000020: 0000 0000 0000 0040 0000 0000 0000 015d  .......@.......]
+  * ...
+  *
+  * indent is applied to each line.  Ends with a CR.
+  */
+ void outputStream::print_data(void* data, size_t len, bool with_ascii) {
+   size_t limit = (len + 16) / 16 * 16;
+   for (size_t i = 0; i < limit; ++i) {
+     if (i % 16 == 0) {
+       indent().print("%07x:", i);
+     }
+     if (i % 2 == 0) {
+       print(" ");
+     }
+     if (i < len) {
+       print("%02x", ((unsigned char*)data)[i]);
+     } else {
+       print("  ");
+     }
+     if ((i + 1) % 16 == 0) {
+       if (with_ascii) {
+         print("  ");
+         for (size_t j = 0; j < 16; ++j) {
+           size_t idx = i + j - 15;
+           if (idx < len) {
+             char c = ((char*)data)[idx];
+             print("%c", c >= 32 && c <= 126 ? c : '.');
+           }
+         }
+       }
+       print_cr("");
+     }
+   }
+ }
+ 
  stringStream::stringStream(size_t initial_size) : outputStream() {
    buffer_length = initial_size;
    buffer        = NEW_RESOURCE_ARRAY(char, buffer_length);
    buffer_pos    = 0;
    buffer_fixed  = false;