117 lines
4.2 KiB
C++
117 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; 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 "mozilla/glean/bindings/GleanMetric.h"
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#include "nsThreadUtils.h"
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#include "nsWrapperCache.h"
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#include "mozilla/AppShutdown.h"
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#include "mozilla/ClearOnShutdown.h"
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namespace mozilla::glean {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(GleanMetric, mParent)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(GleanMetric)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(GleanMetric)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GleanMetric)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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Maybe<SubmetricToMirrorMutex::AutoLock> GetLabeledMirrorLock() {
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static SubmetricToMirrorMutex sLabeledMirrors("sLabeledMirrors");
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auto lock = sLabeledMirrors.Lock();
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// GIFFT will work up to the end of AppShutdownTelemetry.
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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return Nothing();
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}
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if (!*lock) {
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*lock = MakeUnique<SubmetricToLabeledMirrorMapType>();
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RefPtr<nsIRunnable> cleanupFn = NS_NewRunnableFunction(__func__, [&] {
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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auto lock = sLabeledMirrors.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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return;
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}
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RunOnShutdown(
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[&] {
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auto lock = sLabeledMirrors.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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},
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ShutdownPhase::XPCOMWillShutdown);
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});
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// Both getting the main thread and dispatching to it can fail.
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// In that event we leak. Grab a pointer so we have something to NS_RELEASE
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// in that case.
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nsIRunnable* temp = cleanupFn.get();
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nsCOMPtr<nsIThread> mainThread;
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if (NS_FAILED(NS_GetMainThread(getter_AddRefs(mainThread))) ||
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NS_FAILED(mainThread->Dispatch(cleanupFn.forget(),
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nsIThread::DISPATCH_NORMAL))) {
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// Failed to dispatch cleanup routine.
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// First, un-leak the runnable (but only if we actually attempted
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// dispatch)
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if (!cleanupFn) {
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NS_RELEASE(temp);
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}
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// Next, cleanup immediately, and allow metrics to try again later.
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*lock = nullptr;
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return Nothing();
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}
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}
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return Some(std::move(lock));
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}
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Maybe<SubmetricToDistributionMirrorMutex::AutoLock>
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GetLabeledDistributionMirrorLock() {
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static SubmetricToDistributionMirrorMutex sLabeledDistributionMirrors(
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"sLabeledDistributionMirrors");
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auto lock = sLabeledDistributionMirrors.Lock();
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// GIFFT will work up to the end of AppShutdownTelemetry.
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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return Nothing();
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}
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if (!*lock) {
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*lock = MakeUnique<SubmetricToLabeledDistributionMirrorMapType>();
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RefPtr<nsIRunnable> cleanupFn = NS_NewRunnableFunction(__func__, [&] {
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if (AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
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auto lock = sLabeledDistributionMirrors.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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return;
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}
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RunOnShutdown(
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[&] {
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auto lock = sLabeledDistributionMirrors.Lock();
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*lock = nullptr; // deletes, see UniquePtr.h
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},
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ShutdownPhase::XPCOMWillShutdown);
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});
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// Both getting the main thread and dispatching to it can fail.
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// In that event we leak. Grab a pointer so we have something to NS_RELEASE
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// in that case.
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nsIRunnable* temp = cleanupFn.get();
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nsCOMPtr<nsIThread> mainThread;
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if (NS_FAILED(NS_GetMainThread(getter_AddRefs(mainThread))) ||
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NS_FAILED(mainThread->Dispatch(cleanupFn.forget(),
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nsIThread::DISPATCH_NORMAL))) {
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// Failed to dispatch cleanup routine.
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// First, un-leak the runnable (but only if we actually attempted
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// dispatch)
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if (!cleanupFn) {
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NS_RELEASE(temp);
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}
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// Next, cleanup immediately, and allow metrics to try again later.
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*lock = nullptr;
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return Nothing();
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}
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}
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return Some(std::move(lock));
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}
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} // namespace mozilla::glean
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