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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /netwerk/protocol/http/EarlyHintRegistrar.cpp
parentInitial commit. (diff)
downloadthunderbird-upstream.tar.xz
thunderbird-upstream.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'netwerk/protocol/http/EarlyHintRegistrar.cpp')
-rw-r--r--netwerk/protocol/http/EarlyHintRegistrar.cpp130
1 files changed, 130 insertions, 0 deletions
diff --git a/netwerk/protocol/http/EarlyHintRegistrar.cpp b/netwerk/protocol/http/EarlyHintRegistrar.cpp
new file mode 100644
index 0000000000..d77c430819
--- /dev/null
+++ b/netwerk/protocol/http/EarlyHintRegistrar.cpp
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 8; 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 http://mozilla.org/MPL/2.0/. */
+
+#include "EarlyHintRegistrar.h"
+
+#include "EarlyHintPreloader.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/StaticPtr.h"
+#include "nsIObserver.h"
+#include "nsIObserverService.h"
+#include "nsXULAppAPI.h"
+
+namespace {
+mozilla::StaticRefPtr<mozilla::net::EarlyHintRegistrar> gSingleton;
+} // namespace
+
+namespace mozilla::net {
+
+namespace {
+
+class EHShutdownObserver final : public nsIObserver {
+ public:
+ EHShutdownObserver() = default;
+
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIOBSERVER
+
+ private:
+ ~EHShutdownObserver() = default;
+};
+
+NS_IMPL_ISUPPORTS(EHShutdownObserver, nsIObserver)
+
+NS_IMETHODIMP
+EHShutdownObserver::Observe(nsISupports* aSubject, const char* aTopic,
+ const char16_t* aData) {
+ EarlyHintRegistrar::CleanUp();
+ return NS_OK;
+}
+
+} // namespace
+
+EarlyHintRegistrar::EarlyHintRegistrar() {
+ // EarlyHintRegistrar is a main-thread-only object.
+ // All the operations should be run on main thread.
+ // It should be used on chrome process only.
+ MOZ_ASSERT(XRE_IsParentProcess());
+ MOZ_ASSERT(NS_IsMainThread());
+}
+
+EarlyHintRegistrar::~EarlyHintRegistrar() { MOZ_ASSERT(NS_IsMainThread()); }
+
+// static
+void EarlyHintRegistrar::CleanUp() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!gSingleton) {
+ return;
+ }
+
+ for (auto& preloader : gSingleton->mEarlyHint) {
+ if (auto p = preloader.GetData()) {
+ // Don't delete entry from EarlyHintPreloader, because that would
+ // invalidate the iterator.
+
+ p->CancelChannel(NS_ERROR_ABORT, "EarlyHintRegistrar::CleanUp"_ns,
+ /* aDeleteEntry */ false);
+ }
+ }
+ gSingleton->mEarlyHint.Clear();
+}
+
+// static
+already_AddRefed<EarlyHintRegistrar> EarlyHintRegistrar::GetOrCreate() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!gSingleton) {
+ gSingleton = new EarlyHintRegistrar();
+ nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+ if (NS_WARN_IF(!obs)) {
+ return nullptr;
+ }
+ nsCOMPtr<nsIObserver> observer = new EHShutdownObserver();
+ nsresult rv =
+ obs->AddObserver(observer, "profile-change-net-teardown", false);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return nullptr;
+ }
+ mozilla::ClearOnShutdown(&gSingleton);
+ }
+ return do_AddRef(gSingleton);
+}
+
+void EarlyHintRegistrar::DeleteEntry(dom::ContentParentId aCpId,
+ uint64_t aEarlyHintPreloaderId) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ RefPtr<EarlyHintPreloader> ehp = mEarlyHint.Get(aEarlyHintPreloaderId);
+ if (ehp && ehp->IsFromContentParent(aCpId)) {
+ mEarlyHint.Remove(aEarlyHintPreloaderId);
+ }
+}
+
+void EarlyHintRegistrar::RegisterEarlyHint(uint64_t aEarlyHintPreloaderId,
+ EarlyHintPreloader* aEhp) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aEhp);
+
+ mEarlyHint.InsertOrUpdate(aEarlyHintPreloaderId, RefPtr{aEhp});
+}
+
+bool EarlyHintRegistrar::LinkParentChannel(dom::ContentParentId aCpId,
+ uint64_t aEarlyHintPreloaderId,
+ nsIParentChannel* aParent) {
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(aParent);
+
+ RefPtr<EarlyHintPreloader> ehp;
+ bool found = mEarlyHint.Get(aEarlyHintPreloaderId, getter_AddRefs(ehp));
+ if (ehp && ehp->IsFromContentParent(aCpId)) {
+ ehp->OnParentReady(aParent);
+ }
+ MOZ_ASSERT(ehp || !found);
+ return found;
+}
+
+} // namespace mozilla::net