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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 /gfx/ipc/SharedDIB.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/ipc/SharedDIB.cpp')
-rw-r--r--gfx/ipc/SharedDIB.cpp77
1 files changed, 77 insertions, 0 deletions
diff --git a/gfx/ipc/SharedDIB.cpp b/gfx/ipc/SharedDIB.cpp
new file mode 100644
index 000000000..ec68a61fa
--- /dev/null
+++ b/gfx/ipc/SharedDIB.cpp
@@ -0,0 +1,77 @@
+/* -*- 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 "SharedDIB.h"
+
+namespace mozilla {
+namespace gfx {
+
+SharedDIB::SharedDIB() :
+ mShMem(nullptr)
+{
+}
+
+SharedDIB::~SharedDIB()
+{
+ Close();
+}
+
+nsresult
+SharedDIB::Create(uint32_t aSize)
+{
+ Close();
+
+ mShMem = new base::SharedMemory();
+ if (!mShMem || !mShMem->Create("", false, false, aSize))
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ return NS_OK;
+}
+
+bool
+SharedDIB::IsValid()
+{
+ if (!mShMem)
+ return false;
+
+ return mShMem->IsHandleValid(mShMem->handle());
+}
+
+nsresult
+SharedDIB::Close()
+{
+ delete mShMem;
+
+ mShMem = nullptr;
+
+ return NS_OK;
+}
+
+nsresult
+SharedDIB::Attach(Handle aHandle, uint32_t aSize)
+{
+ Close();
+
+ mShMem = new base::SharedMemory(aHandle, false);
+ if(!mShMem)
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ return NS_OK;
+}
+
+nsresult
+SharedDIB::ShareToProcess(base::ProcessId aTargetPid, Handle *aNewHandle)
+{
+ if (!mShMem)
+ return NS_ERROR_UNEXPECTED;
+
+ if (!mShMem->ShareToProcess(aTargetPid, aNewHandle))
+ return NS_ERROR_UNEXPECTED;
+
+ return NS_OK;
+}
+
+} // namespace gfx
+} // namespace mozilla