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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 "chrome/common/ipc_channel_utils.h"
#include "mozilla/ProfilerMarkers.h"
#include "chrome/common/ipc_message.h"
#include "base/process.h"
namespace IPC {
void AddIPCProfilerMarker(const Message& aMessage, int32_t aOtherPid,
mozilla::ipc::MessageDirection aDirection,
mozilla::ipc::MessagePhase aPhase) {
if (aMessage.routing_id() != MSG_ROUTING_NONE &&
profiler_feature_active(ProfilerFeature::IPCMessages)) {
if (static_cast<base::ProcessId>(aOtherPid) == base::kInvalidProcessId) {
DLOG(WARNING) << "Unable to record IPC profile marker, other PID not set";
return;
}
if (profiler_is_locked_on_current_thread()) {
// One of the profiler mutexes is locked on this thread, don't record
// markers, because we don't want to expose profiler IPCs due to the
// profiler itself, and also to avoid possible re-entrancy issues.
return;
}
// The current timestamp must be given to the `IPCMarker` payload.
[[maybe_unused]] const mozilla::TimeStamp now = mozilla::TimeStamp::Now();
bool isThreadBeingProfiled =
profiler_thread_is_being_profiled_for_markers();
PROFILER_MARKER(
"IPC", IPC,
mozilla::MarkerOptions(
mozilla::MarkerTiming::InstantAt(now),
// If the thread is being profiled, add the marker to
// the current thread. If the thread is not being
// profiled, add the marker to the main thread. It will
// appear in the main thread's IPC track. Profiler
// analysis UI correlates all the IPC markers from
// different threads and generates processed markers.
isThreadBeingProfiled ? mozilla::MarkerThreadId::CurrentThread()
: mozilla::MarkerThreadId::MainThread()),
IPCMarker, now, now, aOtherPid, aMessage.seqno(), aMessage.type(),
mozilla::ipc::UnknownSide, aDirection, aPhase, aMessage.is_sync(),
// aOriginThreadId: If the thread is being profiled, do not include a
// thread ID, as it's the same as the markers. Only include this field
// when the marker is being sent from another thread.
isThreadBeingProfiled ? mozilla::MarkerThreadId{}
: mozilla::MarkerThreadId::CurrentThread());
}
}
} // namespace IPC
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