1 files changed, 56 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/HeapSnapshotTempFileHelperParent.cpp b/devtools/shared/heapsnapshot/HeapSnapshotTempFileHelperParent.cpp
new file mode 100644
index 0000000000..ea1cf8378a
--- /dev/null
+++ b/devtools/shared/heapsnapshot/HeapSnapshotTempFileHelperParent.cpp
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et 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 "mozilla/devtools/HeapSnapshot.h"
+#include "mozilla/devtools/HeapSnapshotTempFileHelperParent.h"
+#include "mozilla/ErrorResult.h"
+#include "private/pprio.h"
+
+#include "nsIFile.h"
+
+namespace mozilla {
+namespace devtools {
+
+static bool openFileFailure(ErrorResult& rv,
+                            OpenHeapSnapshotTempFileResponse* outResponse) {
+  *outResponse = rv.StealNSResult();
+  return true;
+}
+
+mozilla::ipc::IPCResult
+HeapSnapshotTempFileHelperParent::RecvOpenHeapSnapshotTempFile(
+    OpenHeapSnapshotTempFileResponse* outResponse) {
+  auto start = TimeStamp::Now();
+  ErrorResult rv;
+  nsAutoString filePath;
+  nsAutoString snapshotId;
+  nsCOMPtr<nsIFile> file =
+      HeapSnapshot::CreateUniqueCoreDumpFile(rv, start, filePath, snapshotId);
+  if (NS_WARN_IF(rv.Failed())) {
+    if (!openFileFailure(rv, outResponse)) {
+      return IPC_FAIL_NO_REASON(this);
+    }
+    return IPC_OK();
+  }
+
+  PRFileDesc* prfd;
+  rv = file->OpenNSPRFileDesc(PR_WRONLY, 0, &prfd);
+  if (NS_WARN_IF(rv.Failed())) {
+    if (!openFileFailure(rv, outResponse)) {
+      return IPC_FAIL_NO_REASON(this);
+    }
+    return IPC_OK();
+  }
+
+  FileDescriptor::PlatformHandleType handle =
+      FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(prfd));
+  FileDescriptor fd(handle);
+  *outResponse = OpenedFile(filePath, snapshotId, fd);
+  return IPC_OK();
+}
+
+}  // namespace devtools
+}  // namespace mozilla