From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../components/backgroundhangmonitor/HangDetails.h | 101 +++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 toolkit/components/backgroundhangmonitor/HangDetails.h

(limited to 'toolkit/components/backgroundhangmonitor/HangDetails.h')

diff --git a/toolkit/components/backgroundhangmonitor/HangDetails.h b/toolkit/components/backgroundhangmonitor/HangDetails.h
new file mode 100644
index 0000000000..8641bfcb71
--- /dev/null
+++ b/toolkit/components/backgroundhangmonitor/HangDetails.h
@@ -0,0 +1,101 @@
+/* -*- 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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