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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/. */
#ifndef mozilla_HangDetails_h
#define mozilla_HangDetails_h
#include <utility>
#include "ipc/IPCMessageUtils.h"
#include "mozilla/HangAnnotations.h"
#include "mozilla/HangTypes.h"
#include "mozilla/ProcessedStack.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Result.h"
#include "mozilla/TimeStamp.h"
#include "nsIFile.h"
#include "nsIHangDetails.h"
#include "nsTArray.h"
namespace mozilla {
enum class PersistedToDisk {
No,
Yes,
};
/**
* HangDetails is the concrete implementaion of nsIHangDetails, and contains the
* infromation which we want to expose to observers of the bhr-thread-hang
* observer notification.
*/
class nsHangDetails : public nsIHangDetails {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIHANGDETAILS
explicit nsHangDetails(HangDetails&& aDetails,
PersistedToDisk aPersistedToDisk)
: mDetails(std::move(aDetails)), mPersistedToDisk(aPersistedToDisk) {}
// Submit these HangDetails to the main thread. This will dispatch a runnable
// to the main thread which will fire off the bhr-thread-hang observer
// notification with this HangDetails as the subject.
void Submit();
private:
virtual ~nsHangDetails() = default;
HangDetails mDetails;
PersistedToDisk mPersistedToDisk;
};
Result<Ok, nsresult> WriteHangDetailsToFile(HangDetails& aDetails,
nsIFile* aFile);
/**
* This runnable is run on the StreamTransportService threadpool in order to
* process the stack off main thread before submitting it to the main thread as
* an observer notification.
*
* This object should have the only remaining reference to aHangDetails, as it
* will access its fields without synchronization.
*/
class ProcessHangStackRunnable final : public Runnable {
public:
explicit ProcessHangStackRunnable(HangDetails&& aHangDetails,
PersistedToDisk aPersistedToDisk)
: Runnable("ProcessHangStackRunnable"),
mHangDetails(std::move(aHangDetails)),
mPersistedToDisk(aPersistedToDisk) {}
NS_IMETHOD Run() override;
private:
HangDetails mHangDetails;
PersistedToDisk mPersistedToDisk;
};
/**
* This runnable handles checking whether our last session wrote a permahang to
* disk which we were unable to submit through telemetry. If so, we read the
* permahang out and try again to submit it.
*/
class SubmitPersistedPermahangRunnable final : public Runnable {
public:
explicit SubmitPersistedPermahangRunnable(nsIFile* aPermahangFile)
: Runnable("SubmitPersistedPermahangRunnable"),
mPermahangFile(aPermahangFile) {}
NS_IMETHOD Run() override;
private:
nsCOMPtr<nsIFile> mPermahangFile;
};
} // namespace mozilla
#endif // mozilla_HangDetails_h
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