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