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authorMatt A. Tobin <email@mattatobin.com>2020-02-22 17:32:39 -0500
committerwolfbeast <mcwerewolf@wolfbeast.com>2020-04-14 12:50:57 +0200
commit36fc5f674ef1a02d1498484c563a7108f4de44ed (patch)
tree120483cd8fc0decd189d5118941a9b23d6156ad5 /dom/heapsnapshot/FileDescriptorOutputStream.cpp
parent7b30664f59e65cadb7d5eb2e42591e90a32871f8 (diff)
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Reclassify heapsnapshot and nsJSInspector as not part of devtools
This resolves Issue #316
Diffstat (limited to 'dom/heapsnapshot/FileDescriptorOutputStream.cpp')
-rw-r--r--dom/heapsnapshot/FileDescriptorOutputStream.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/dom/heapsnapshot/FileDescriptorOutputStream.cpp b/dom/heapsnapshot/FileDescriptorOutputStream.cpp
new file mode 100644
index 000000000..72a289558
--- /dev/null
+++ b/dom/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