forked from mirrors/gecko-dev
dfe4262aaf
In particular this avoids unqualified name lookup ambiguity between ::Request and mozilla::dom::Request (imported into the global namespace by using namespace mozilla::dom). Differential Revision: https://phabricator.services.mozilla.com/D61212 --HG-- extra : moz-landing-system : lando
96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCodeCoverage.h"
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#include "mozilla/CodeCoverageHandler.h"
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#include "mozilla/Unused.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/dom/Promise.h"
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using mozilla::dom::ContentParent;
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using mozilla::dom::Promise;
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NS_IMPL_ISUPPORTS(nsCodeCoverage, nsICodeCoverage)
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nsCodeCoverage::nsCodeCoverage() {}
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nsCodeCoverage::~nsCodeCoverage() {}
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enum RequestType { Flush };
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class ProcessCount final {
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NS_INLINE_DECL_REFCOUNTING(ProcessCount);
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public:
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explicit ProcessCount(uint32_t c) : mCount(c) {}
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operator uint32_t() const { return mCount; }
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ProcessCount& operator--() {
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mCount--;
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return *this;
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}
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private:
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~ProcessCount() {}
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uint32_t mCount;
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};
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namespace {
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nsresult Request(JSContext* cx, Promise** aPromise, RequestType requestType) {
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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nsIGlobalObject* global = xpc::CurrentNativeGlobal(cx);
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if (NS_WARN_IF(!global)) {
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return NS_ERROR_FAILURE;
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}
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mozilla::ErrorResult result;
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RefPtr<Promise> promise = Promise::Create(global, result);
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if (NS_WARN_IF(result.Failed())) {
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return result.StealNSResult();
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}
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uint32_t processCount = 0;
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for (auto* cp : ContentParent::AllProcesses(ContentParent::eLive)) {
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mozilla::Unused << cp;
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++processCount;
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}
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if (requestType == RequestType::Flush) {
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mozilla::CodeCoverageHandler::FlushCounters();
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}
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if (processCount == 0) {
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promise->MaybeResolveWithUndefined();
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} else {
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RefPtr<ProcessCount> processCountHolder(new ProcessCount(processCount));
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auto resolve = [processCountHolder, promise](bool unused) {
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if (--(*processCountHolder) == 0) {
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promise->MaybeResolveWithUndefined();
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}
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};
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auto reject = [promise](mozilla::ipc::ResponseRejectReason&& aReason) {
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promise->MaybeReject(NS_ERROR_FAILURE);
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};
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for (auto* cp : ContentParent::AllProcesses(ContentParent::eLive)) {
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if (requestType == RequestType::Flush) {
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cp->SendFlushCodeCoverageCounters(resolve, reject);
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}
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}
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}
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promise.forget(aPromise);
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return NS_OK;
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}
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} // anonymous namespace
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NS_IMETHODIMP nsCodeCoverage::FlushCounters(JSContext* cx, Promise** aPromise) {
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return Request(cx, aPromise, RequestType::Flush);
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}
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