Yannis Juglaret
94a7941255
Stop skipping the shutdown-hang crash path under MOZ_TEST_CHILD_EXIT_HANG, since the hang delay used by browser_child_hang.js is low enough to avoid the crash path anyway. Add a Marionette test for NS_FREE_PERMANENT_DATA builds, that forces a child process hang at shutdown by using MOZ_TEST_CHILD_EXIT_HANG, then verifies that this results in a crash report that carries the expected uniform crash signature override annotation. Mark MOZ_TEST_CHILD_EXIT_HANG crashes as intentional by using the new IntentionalCrashForTesting annotation, to avoid flagging the test runs that produce these crash reports as failures. Differential Revision: https://phabricator.services.mozilla.com/D311491
133 lines
4.3 KiB
C++
133 lines
4.3 KiB
C++
/* 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 "mozilla/ipc/ProcessChild.h"
|
|
|
|
#include "Endpoint.h"
|
|
#include "nsDebug.h"
|
|
|
|
#ifdef XP_WIN
|
|
# include <stdlib.h> // for _exit()
|
|
# include <synchapi.h>
|
|
#else
|
|
# include <unistd.h> // for _exit()
|
|
# include <time.h>
|
|
# include "base/eintr_wrapper.h"
|
|
# include "prenv.h"
|
|
#endif
|
|
|
|
#include "nsAppRunner.h"
|
|
#include "nsExceptionHandler.h"
|
|
#include "mozilla/AppShutdown.h"
|
|
#include "mozilla/ipc/IOThread.h"
|
|
#include "mozilla/ipc/ProcessUtils.h"
|
|
#include "mozilla/GeckoArgs.h"
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
|
|
ProcessChild* ProcessChild::gProcessChild;
|
|
StaticMutex ProcessChild::gIPCShutdownStateLock;
|
|
constinit nsCString ProcessChild::gIPCShutdownStateAnnotation;
|
|
|
|
ProcessChild::ProcessChild(IPC::Channel::ChannelHandle aClientChannel,
|
|
ProcessId aParentPid, const nsID& aMessageChannelId)
|
|
: mUILoop(MessageLoop::current()),
|
|
mParentPid(aParentPid),
|
|
mMessageChannelId(aMessageChannelId),
|
|
mChildThread(
|
|
MakeUnique<IOThreadChild>(std::move(aClientChannel), aParentPid)) {
|
|
MOZ_ASSERT(mUILoop, "UILoop should be created by now");
|
|
MOZ_ASSERT(!gProcessChild, "should only be one ProcessChild");
|
|
CrashReporter::RegisterAnnotationNSCString(
|
|
CrashReporter::Annotation::IPCShutdownState,
|
|
&gIPCShutdownStateAnnotation);
|
|
gProcessChild = this;
|
|
}
|
|
|
|
/* static */
|
|
void ProcessChild::AddPlatformBuildID(geckoargs::ChildProcessArgs& aExtraArgs) {
|
|
nsCString parentBuildID(mozilla::PlatformBuildID());
|
|
geckoargs::sParentBuildID.Put(parentBuildID.get(), aExtraArgs);
|
|
}
|
|
|
|
/* static */
|
|
bool ProcessChild::InitPrefs(int aArgc, char* aArgv[]) {
|
|
Maybe<ReadOnlySharedMemoryHandle> prefsHandle =
|
|
geckoargs::sPrefsHandle.Get(aArgc, aArgv);
|
|
Maybe<ReadOnlySharedMemoryHandle> prefMapHandle =
|
|
geckoargs::sPrefMapHandle.Get(aArgc, aArgv);
|
|
|
|
if (prefsHandle.isNothing() || prefMapHandle.isNothing()) {
|
|
return false;
|
|
}
|
|
|
|
SharedPreferenceDeserializer deserializer;
|
|
return deserializer.DeserializeFromSharedMemory(std::move(*prefsHandle),
|
|
std::move(*prefMapHandle));
|
|
}
|
|
|
|
#ifdef ENABLE_TESTS
|
|
// Allow tests to cause a synthetic delay/"hang" during child process
|
|
// shutdown by setting environment variables.
|
|
# ifdef XP_UNIX
|
|
static void ReallySleep(int aSeconds) {
|
|
struct ::timespec snooze = {aSeconds, 0};
|
|
HANDLE_EINTR(nanosleep(&snooze, &snooze));
|
|
}
|
|
# else
|
|
static void ReallySleep(int aSeconds) { ::Sleep(aSeconds * 1000); }
|
|
# endif // Unix/Win
|
|
static void SleepIfEnv(const char* aName) {
|
|
if (auto* value = PR_GetEnv(aName)) {
|
|
CrashReporter::RecordAnnotationBool(
|
|
CrashReporter::Annotation::IntentionalCrashForTesting, true);
|
|
ReallySleep(atoi(value));
|
|
CrashReporter::UnrecordAnnotation(
|
|
CrashReporter::Annotation::IntentionalCrashForTesting);
|
|
}
|
|
}
|
|
#else // not tests
|
|
static void SleepIfEnv(const char* aName) {}
|
|
#endif
|
|
|
|
ProcessChild::~ProcessChild() {
|
|
#ifdef NS_FREE_PERMANENT_DATA
|
|
// debug/*san/ccov: content processes reach ~ProcessChild on normal shutdown.
|
|
// This sleep is late enough that it won't block parent process shutdown, so
|
|
// we'll get into late IPC shutdown with processes still running.
|
|
SleepIfEnv("MOZ_TEST_CHILD_EXIT_HANG");
|
|
#endif
|
|
gIPCShutdownStateAnnotation = ""_ns;
|
|
gProcessChild = nullptr;
|
|
}
|
|
|
|
/* static */
|
|
void ProcessChild::NotifiedImpendingShutdown() {
|
|
AppShutdown::SetImpendingShutdown();
|
|
ProcessChild::AppendToIPCShutdownStateAnnotation(
|
|
"NotifiedImpendingShutdown"_ns);
|
|
}
|
|
|
|
/* static */
|
|
void ProcessChild::QuickExit() {
|
|
#ifndef NS_FREE_PERMANENT_DATA
|
|
// opt: content processes exit here without reaching ~ProcessChild on normal
|
|
// shutdown (and the parent is terminated before ProcessWatcher's shutdown
|
|
// hook). Blocking here lets us exercise ProcessWatcher's kill timer.
|
|
SleepIfEnv("MOZ_TEST_CHILD_EXIT_HANG");
|
|
#endif
|
|
AppShutdown::DoImmediateExit();
|
|
}
|
|
|
|
UntypedEndpoint ProcessChild::TakeInitialEndpoint() {
|
|
return UntypedEndpoint{PrivateIPDLInterface{},
|
|
mChildThread->TakeInitialPort(), mMessageChannelId,
|
|
EndpointProcInfo::Current(),
|
|
EndpointProcInfo{.mPid = mParentPid, .mChildID = 0}};
|
|
}
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|