summaryrefslogtreecommitdiffstats
path: root/devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp')
-rw-r--r--devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp b/devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp
new file mode 100644
index 000000000..72a289558
--- /dev/null
+++ b/devtools/shared/heapsnapshot/FileDescriptorOutputStream.cpp
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* 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/FileDescriptorOutputStream.h"
+#include "private/pprio.h"
+
+namespace mozilla {
+namespace devtools {
+
+/* static */ already_AddRefed<FileDescriptorOutputStream>
+FileDescriptorOutputStream::Create(const ipc::FileDescriptor& fileDescriptor)
+{
+ if (NS_WARN_IF(!fileDescriptor.IsValid()))
+ return nullptr;
+
+ auto rawFD = fileDescriptor.ClonePlatformHandle();
+ PRFileDesc* prfd = PR_ImportFile(PROsfd(rawFD.release()));
+ if (NS_WARN_IF(!prfd))
+ return nullptr;
+
+ RefPtr<FileDescriptorOutputStream> stream = new FileDescriptorOutputStream(prfd);
+ return stream.forget();
+}
+
+NS_IMPL_ISUPPORTS(FileDescriptorOutputStream, nsIOutputStream);
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::Close()
+{
+ // Repeatedly closing is idempotent.
+ if (!fd)
+ return NS_OK;
+
+ if (PR_Close(fd) != PR_SUCCESS)
+ return NS_ERROR_FAILURE;
+ fd = nullptr;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::Write(const char* buf, uint32_t count, uint32_t* retval)
+{
+ if (NS_WARN_IF(!fd))
+ return NS_ERROR_FAILURE;
+
+ auto written = PR_Write(fd, buf, count);
+ if (written < 0)
+ return NS_ERROR_FAILURE;
+ *retval = written;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::Flush()
+{
+ if (NS_WARN_IF(!fd))
+ return NS_ERROR_FAILURE;
+
+ return PR_Sync(fd) == PR_SUCCESS ? NS_OK : NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::WriteFrom(nsIInputStream* fromStream, uint32_t count,
+ uint32_t* retval)
+{
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::WriteSegments(nsReadSegmentFun reader, void* closure,
+ uint32_t count, uint32_t* retval)
+{
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+FileDescriptorOutputStream::IsNonBlocking(bool* retval)
+{
+ *retval = false;
+ return NS_OK;
+}
+
+} // namespace devtools
+} // namespace mozilla