1.1 --- a/src/share/vm/utilities/debug.hpp Wed Jan 19 13:04:37 2011 -0800
1.2 +++ b/src/share/vm/utilities/debug.hpp Wed Jan 19 19:30:42 2011 -0500
1.3 @@ -34,6 +34,7 @@
1.4 class FormatBuffer {
1.5 public:
1.6 inline FormatBuffer(const char * format, ...);
1.7 + inline void append(const char* format, ...);
1.8 operator const char *() const { return _buf; }
1.9
1.10 private:
1.11 @@ -51,6 +52,19 @@
1.12 va_end(argp);
1.13 }
1.14
1.15 +template <size_t bufsz>
1.16 +void FormatBuffer<bufsz>::append(const char* format, ...) {
1.17 + // Given that the constructor does a vsnprintf we can assume that
1.18 + // _buf is already initialized.
1.19 + size_t len = strlen(_buf);
1.20 + char* buf_end = _buf + len;
1.21 +
1.22 + va_list argp;
1.23 + va_start(argp, format);
1.24 + vsnprintf(buf_end, bufsz - len, format, argp);
1.25 + va_end(argp);
1.26 +}
1.27 +
1.28 // Used to format messages for assert(), guarantee(), fatal(), etc.
1.29 typedef FormatBuffer<> err_msg;
1.30
