tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

HeapSnapshotTempFileHelperParent.cpp (1725B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set sw=2 ts=8 et tw=80 : */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/devtools/HeapSnapshot.h"
      8 #include "mozilla/devtools/HeapSnapshotTempFileHelperParent.h"
      9 #include "mozilla/ErrorResult.h"
     10 #include "private/pprio.h"
     11 
     12 #include "nsIFile.h"
     13 
     14 namespace mozilla {
     15 namespace devtools {
     16 
     17 static bool openFileFailure(ErrorResult& rv,
     18                            OpenHeapSnapshotTempFileResponse* outResponse) {
     19  *outResponse = rv.StealNSResult();
     20  return true;
     21 }
     22 
     23 mozilla::ipc::IPCResult
     24 HeapSnapshotTempFileHelperParent::RecvOpenHeapSnapshotTempFile(
     25    OpenHeapSnapshotTempFileResponse* outResponse) {
     26  auto start = TimeStamp::Now();
     27  ErrorResult rv;
     28  nsAutoString filePath;
     29  nsAutoString snapshotId;
     30  nsCOMPtr<nsIFile> file =
     31      HeapSnapshot::CreateUniqueCoreDumpFile(rv, start, filePath, snapshotId);
     32  if (NS_WARN_IF(rv.Failed())) {
     33    if (!openFileFailure(rv, outResponse)) {
     34      return IPC_FAIL_NO_REASON(this);
     35    }
     36    return IPC_OK();
     37  }
     38 
     39  PRFileDesc* prfd;
     40  rv = file->OpenNSPRFileDesc(PR_WRONLY, 0, &prfd);
     41  if (NS_WARN_IF(rv.Failed())) {
     42    if (!openFileFailure(rv, outResponse)) {
     43      return IPC_FAIL_NO_REASON(this);
     44    }
     45    return IPC_OK();
     46  }
     47 
     48  FileDescriptor::PlatformHandleType handle =
     49      FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(prfd));
     50  FileDescriptor fd(handle);
     51  *outResponse = OpenedFile(filePath, snapshotId, fd);
     52  return IPC_OK();
     53 }
     54 
     55 }  // namespace devtools
     56 }  // namespace mozilla