diff -r 000000000000 -r 6474c204b198 memory/replace/dmd/DMD.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memory/replace/dmd/DMD.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DMD_h___
+#define DMD_h___
+
+#include <stdarg.h>
+#include <string.h>
+
+#include "mozilla/Types.h"
+
+namespace mozilla {
+namespace dmd {
+
+// Mark a heap block as reported by a memory reporter.
+MOZ_EXPORT void
+Report(const void* aPtr);
+
+// Mark a heap block as reported immediately on allocation.
+MOZ_EXPORT void
+ReportOnAlloc(const void* aPtr);
+
+class Writer
+{
+public:
+  typedef void (*WriterFun)(void* aWriteState, const char* aFmt, va_list aAp);
+
+  Writer(WriterFun aWriterFun, void* aWriteState)
+    : mWriterFun(aWriterFun), mWriteState(aWriteState)
+  {}
+
+  void Write(const char* aFmt, ...) const;
+
+private:
+  WriterFun mWriterFun;
+  void*     mWriteState;
+};
+
+// Clears existing reportedness data from any prior runs of the memory
+// reporters.  The following sequence should be used.
+// - ClearReports()
+// - run the memory reporters
+// - Dump()
+// This sequence avoids spurious twice-reported warnings.
+MOZ_EXPORT void
+ClearReports();
+
+// Checks which heap blocks have been reported, and dumps a human-readable
+// summary (via |aWrite|).  If |aWrite| is nullptr it will dump to stderr.
+// Beware:  this output may have very long lines.
+MOZ_EXPORT void
+Dump(Writer aWriter);
+
+// A useful |WriterFun|.  If |fp| is a FILE* you want |Dump|'s output to be
+// written to, call:
+//
+//   dmd::Writer writer(FpWrite, fp);
+//   dmd::Dump(writer);
+MOZ_EXPORT void
+FpWrite(void* aFp, const char* aFmt, va_list aAp);
+
+struct Sizes
+{
+  size_t mStackTracesUsed;
+  size_t mStackTracesUnused;
+  size_t mStackTraceTable;
+  size_t mBlockTable;
+
+  Sizes() { Clear(); }
+  void Clear() { memset(this, 0, sizeof(Sizes)); }
+};
+
+// Gets the size of various data structures.  Used to implement a memory
+// reporter for DMD.
+MOZ_EXPORT void
+SizeOf(Sizes* aSizes);
+
+// Indicates whether or not DMD is enabled.
+MOZ_EXPORT bool
+IsEnabled();
+
+} // namespace mozilla
+} // namespace dmd
+
+#endif /* DMD_h___ */