SlamCommand.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef SLAMCOMMAND_H
#define SLAMCOMMAND_H

#include "pedigree/kernel/debugger/DebuggerCommand.h"
#include "pedigree/kernel/debugger/DebuggerIO.h"
#include "pedigree/kernel/debugger/Scrollable.h"
#include "pedigree/kernel/processor/state_forward.h"
#include "pedigree/kernel/processor/types.h"
#include "pedigree/kernel/utilities/StaticString.h"
#include "pedigree/kernel/utilities/Tree.h"
#include "pedigree/kernel/utilities/new"

#define NUM_SLAM_BT_FRAMES 10

class SlamCommand : public DebuggerCommand, public Scrollable
{
  public:
    SlamCommand();

    ~SlamCommand();

    void autocomplete(const HugeStaticString &input, HugeStaticString &output);

    bool execute(
        const HugeStaticString &input, HugeStaticString &output,
        InterruptState &state, DebuggerIO *screen);

    const NormalStaticString getString()
    {
        return NormalStaticString("slam-allocations");
    }

    void addAllocation(uintptr_t *backtrace, size_t requested);

    void removeAllocation(uintptr_t *backtrace, size_t requested);

    void clean()
    {
        m_Tree.clear();
    }

    //
    // Scrollable interface
    //
    virtual const char *getLine1(
        size_t index, DebuggerIO::Colour &colour, DebuggerIO::Colour &bgColour);
    virtual const char *getLine2(
        size_t index, size_t &colOffset, DebuggerIO::Colour &colour,
        DebuggerIO::Colour &bgColour);
    virtual size_t getLineCount();

  private:
    struct SlamAllocation
    {
        uintptr_t bt[NUM_SLAM_BT_FRAMES];
        size_t n;
        size_t size;
    };
    Tree<size_t, SlamAllocation *> m_Tree;
    Tree<size_t, SlamAllocation *>::Iterator m_It;
    size_t m_nLines;
    size_t m_nIdx;
    bool m_Lock;
};

extern SlamCommand g_SlamCommand;

#endif