/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim: set ts=8 sts=4 et sw=4 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/. */

#include <string>

#include <sstream>

#include "nsExceptionHandler.h"

#include "GfxTexturesReporter.h"

#include "gfxPrefs.h"

using namespace mozilla;

using namespace mozilla::gl;

NS_IMPL_ISUPPORTS(GfxTexturesReporter, nsIMemoryReporter)

Atomic<size_t> GfxTexturesReporter::sAmount(0);

Atomic<size_t> GfxTexturesReporter::sPeakAmount(0);

Atomic<size_t> GfxTexturesReporter::sTileWasteAmount(0);

std::string

FormatBytes(size_t amount)

{

    std::stringstream stream;

    int depth = 0;

    double val = amount;

    while (val > 1024) {

        val /= 1024;

        depth++;

    }

    const char* unit;

    switch(depth) {

      case 0:

      unit = "bytes";

      break;

      case 1:

      unit = "KB";

      break;

      case 2:

      unit = "MB";

      break;

      case 3:

      unit = "GB";

      break;

      default:

      unit = "";

      break;

  }

  stream << val << " " << unit;

  return stream.str();

}

/* static */ void

GfxTexturesReporter::UpdateAmount(MemoryUse action, size_t amount)

{

    if (action == MemoryFreed) {

        MOZ_RELEASE_ASSERT(amount <= sAmount, "GFX: Current texture usage greater than update amount.");

        sAmount -= amount;

        if (gfxPrefs::GfxLoggingTextureUsageEnabled()) {

            printf_stderr("Current texture usage: %s\n", FormatBytes(sAmount).c_str());

        }

    } else {

        sAmount += amount;

        if (sAmount > sPeakAmount) {

            sPeakAmount.exchange(sAmount);

            if (gfxPrefs::GfxLoggingPeakTextureUsageEnabled()) {

                printf_stderr("Peak texture usage: %s\n", FormatBytes(sPeakAmount).c_str());

            }

        }

    }

    CrashReporter::AnnotateTexturesSize(sAmount);

}