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782cf5d3ad
In most situations, JSONWriter users already know string lengths (either directly, or through `nsCString` and friends), so we should keep this information through JSONWriter and not recompute it again. This also allows using JSONWriter with sub-strings (e.g., from a bigger buffer), without having to create null-terminated strings. Public JSONWriter functions have overloads that accept literal strings. Differential Revision: https://phabricator.services.mozilla.com/D86192
42 lines
1.8 KiB
C++
42 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=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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#include "PageInformation.h"
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#include "mozilla/ProfileJSONWriter.h"
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PageInformation::PageInformation(uint64_t aBrowsingContextID,
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uint64_t aInnerWindowID, const nsCString& aUrl,
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uint64_t aEmbedderInnerWindowID)
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: mBrowsingContextID(aBrowsingContextID),
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mInnerWindowID(aInnerWindowID),
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mUrl(aUrl),
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mEmbedderInnerWindowID(aEmbedderInnerWindowID) {}
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bool PageInformation::Equals(PageInformation* aOtherPageInfo) const {
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// It's enough to check inner window IDs because they are unique for each
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// page. Therefore, we don't have to check browsing context ID or url.
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return InnerWindowID() == aOtherPageInfo->InnerWindowID();
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}
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void PageInformation::StreamJSON(SpliceableJSONWriter& aWriter) const {
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// Here, we are converting uint64_t to double. Both Browsing Context and Inner
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// Window IDs are creating using `nsContentUtils::GenerateProcessSpecificId`,
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// which is specifically designed to only use 53 of the 64 bits to be lossless
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// when passed into and out of JS as a double.
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aWriter.StartObjectElement();
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aWriter.DoubleProperty("browsingContextID", BrowsingContextID());
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aWriter.DoubleProperty("innerWindowID", InnerWindowID());
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aWriter.StringProperty("url", Url());
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aWriter.DoubleProperty("embedderInnerWindowID", EmbedderInnerWindowID());
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aWriter.EndObject();
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}
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size_t PageInformation::SizeOfIncludingThis(
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mozilla::MallocSizeOf aMallocSizeOf) const {
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return aMallocSizeOf(this);
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}
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