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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 */
#include "PageInformation.h"
#include "BaseProfiler.h"
#include "mozilla/BaseProfileJSONWriter.h"
namespace mozilla {
namespace baseprofiler {
PageInformation::PageInformation(uint64_t aTabID, uint64_t aInnerWindowID,
const std::string& aUrl,
uint64_t aEmbedderInnerWindowID)
: mTabID(aTabID),
mRefCnt(0) {}
bool PageInformation::Equals(PageInformation* aOtherPageInfo) const {
// It's enough to check inner window IDs because they are unique for each
// page. Therefore, we don't have to check the tab ID or url.
return InnerWindowID() == aOtherPageInfo->InnerWindowID();
void PageInformation::StreamJSON(SpliceableJSONWriter& aWriter) const {
// Here, we are converting uint64_t to double. Both tab and Inner
// Window IDs are created using `nsContentUtils::GenerateProcessSpecificId`,
// which is specifically designed to only use 53 of the 64 bits to be lossless
// when passed into and out of JS as a double.
aWriter.DoubleProperty("tabID", TabID());
aWriter.DoubleProperty("innerWindowID", InnerWindowID());
aWriter.StringProperty("url", Url());
aWriter.DoubleProperty("embedderInnerWindowID", EmbedderInnerWindowID());
size_t PageInformation::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
return aMallocSizeOf(this);
} // namespace baseprofiler
} // namespace mozilla