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/* -*- 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 "ContentProcessManager.h"
#include "ContentParent.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/ClearOnShutdown.h"
#include "nsPrintfCString.h"
// XXX need another bug to move this to a common header.
#ifdef DISABLE_ASSERTS_FOR_FUZZING
# define ASSERT_UNLESS_FUZZING(...) \
do { \
} while (0)
#else
# define ASSERT_UNLESS_FUZZING(...) MOZ_ASSERT(false, __VA_ARGS__)
#endif
namespace mozilla {
namespace dom {
/* static */
StaticAutoPtr<ContentProcessManager> ContentProcessManager::sSingleton;
/* static */
ContentProcessManager* ContentProcessManager::GetSingleton() {
MOZ_ASSERT(XRE_IsParentProcess());
if (!sSingleton) {
sSingleton = new ContentProcessManager();
ClearOnShutdown(&sSingleton);
}
return sSingleton;
}
void ContentProcessManager::AddContentProcess(ContentParent* aChildCp) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aChildCp);
auto entry = mContentParentMap.LookupForAdd(aChildCp->ChildID());
MOZ_ASSERT_IF(entry, entry.Data() == aChildCp);
entry.OrInsert([&] { return aChildCp; });
}
void ContentProcessManager::RemoveContentProcess(
const ContentParentId& aChildCpId) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ALWAYS_TRUE(mContentParentMap.Remove(aChildCpId));
}
ContentParent* ContentProcessManager::GetContentProcessById(
const ContentParentId& aChildCpId) {
MOZ_ASSERT(NS_IsMainThread());
ContentParent* contentParent = mContentParentMap.Get(aChildCpId);
if (NS_WARN_IF(!contentParent)) {
ASSERT_UNLESS_FUZZING();
return nullptr;
}
return contentParent;
}
bool ContentProcessManager::RegisterRemoteFrame(BrowserParent* aChildBp) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aChildBp);
auto entry = mBrowserParentMap.LookupForAdd(aChildBp->GetTabId());
MOZ_ASSERT_IF(entry, entry.Data() == aChildBp);
entry.OrInsert([&] { return aChildBp; });
return !entry;
}
void ContentProcessManager::UnregisterRemoteFrame(const TabId& aChildTabId) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ALWAYS_TRUE(mBrowserParentMap.Remove(aChildTabId));
}
ContentParentId ContentProcessManager::GetTabProcessId(
const TabId& aChildTabId) {
MOZ_ASSERT(NS_IsMainThread());
if (BrowserParent* browserParent = mBrowserParentMap.Get(aChildTabId)) {
return browserParent->Manager()->ChildID();
}
return ContentParentId(0);
}
uint32_t ContentProcessManager::GetBrowserParentCountByProcessId(
const ContentParentId& aChildCpId) {
MOZ_ASSERT(NS_IsMainThread());
ContentParent* contentParent = mContentParentMap.Get(aChildCpId);
if (NS_WARN_IF(!contentParent)) {
return 0;
}
return contentParent->ManagedPBrowserParent().Count();
}
already_AddRefed<BrowserParent>
ContentProcessManager::GetBrowserParentByProcessAndTabId(
const ContentParentId& aChildCpId, const TabId& aChildTabId) {
RefPtr<BrowserParent> browserParent = mBrowserParentMap.Get(aChildTabId);
if (NS_WARN_IF(!browserParent)) {
return nullptr;
}
if (NS_WARN_IF(browserParent->Manager()->ChildID() != aChildCpId)) {
return nullptr;
}
return browserParent.forget();
}
already_AddRefed<BrowserParent>
ContentProcessManager::GetTopLevelBrowserParentByProcessAndTabId(
const ContentParentId& aChildCpId, const TabId& aChildTabId) {
RefPtr<BrowserParent> browserParent =
GetBrowserParentByProcessAndTabId(aChildCpId, aChildTabId);
while (browserParent && browserParent->GetBrowserBridgeParent()) {
browserParent = browserParent->GetBrowserBridgeParent()->Manager();
}
return browserParent.forget();
}
} // namespace dom
} // namespace mozilla
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