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diff src/share/vm/utilities/debug.hpp @ 2152:0fa27f37d4d4

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6977804: G1: remove the zero-filling thread Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification. Reviewed-by: jcoomes, johnc
author tonyp
date Wed, 19 Jan 2011 19:30:42 -0500
parents f95d63e2154a
children 3582bf76420e
line wrap: on
line diff
--- a/src/share/vm/utilities/debug.hpp	Wed Jan 19 13:04:37 2011 -0800
+++ b/src/share/vm/utilities/debug.hpp	Wed Jan 19 19:30:42 2011 -0500
@@ -34,6 +34,7 @@
 class FormatBuffer {
 public:
   inline FormatBuffer(const char * format, ...);
+  inline void append(const char* format, ...);
   operator const char *() const { return _buf; }
 
 private:
@@ -51,6 +52,19 @@
   va_end(argp);
 }
 
+template <size_t bufsz>
+void FormatBuffer<bufsz>::append(const char* format, ...) {
+  // Given that the constructor does a vsnprintf we can assume that
+  // _buf is already initialized.
+  size_t len = strlen(_buf);
+  char* buf_end = _buf + len;
+
+  va_list argp;
+  va_start(argp, format);
+  vsnprintf(buf_end, bufsz - len, format, argp);
+  va_end(argp);
+}
+
 // Used to format messages for assert(), guarantee(), fatal(), etc.
 typedef FormatBuffer<> err_msg;