1 files changed, 78 insertions, 0 deletions
diff --git a/ipc/ipdl/test/gtest/TestManyHandles.cpp b/ipc/ipdl/test/gtest/TestManyHandles.cpp
new file mode 100644
index 0000000000..ead8af22b1
--- /dev/null
+++ b/ipc/ipdl/test/gtest/TestManyHandles.cpp
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 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 "gtest/gtest.h"
+
+#include "mozilla/_ipdltest/IPDLUnitTest.h"
+#include "mozilla/_ipdltest/PTestManyHandlesChild.h"
+#include "mozilla/_ipdltest/PTestManyHandlesParent.h"
+
+using namespace mozilla::ipc;
+
+namespace mozilla::_ipdltest {
+
+class TestManyHandlesChild : public PTestManyHandlesChild {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TestManyHandlesChild, override)
+
+ public:
+  IPCResult RecvManyHandles(nsTArray<FileDescriptor>&& aDescrs) override {
+    EXPECT_EQ(aDescrs.Length(), 500u);
+    for (int i = 0; i < static_cast<int>(aDescrs.Length()); ++i) {
+      UniqueFileHandle handle = aDescrs[i].TakePlatformHandle();
+      int value;
+      const int size = sizeof(value);
+#ifdef XP_WIN
+      DWORD numberOfBytesRead;
+      EXPECT_TRUE(
+          ::ReadFile(handle.get(), &value, size, &numberOfBytesRead, nullptr));
+      EXPECT_EQ(numberOfBytesRead, (DWORD)size);
+#else
+      EXPECT_EQ(read(handle.get(), &value, size), size);
+#endif
+      EXPECT_EQ(value, i);
+    }
+    Close();
+    return IPC_OK();
+  }
+
+ private:
+  ~TestManyHandlesChild() = default;
+};
+
+class TestManyHandlesParent : public PTestManyHandlesParent {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TestManyHandlesParent, override)
+
+ private:
+  ~TestManyHandlesParent() = default;
+};
+
+IPDL_TEST(TestManyHandles) {
+  nsTArray<FileDescriptor> descrs;
+  for (int i = 0; i < 500; ++i) {
+    const int size = sizeof(i);
+    UniqueFileHandle readPipe;
+    UniqueFileHandle writePipe;
+#ifdef XP_WIN
+    ASSERT_TRUE(::CreatePipe(getter_Transfers(readPipe),
+                             getter_Transfers(writePipe), nullptr, size));
+    DWORD numberOfBytesWritten;
+    ASSERT_TRUE(
+        ::WriteFile(writePipe.get(), &i, size, &numberOfBytesWritten, nullptr));
+    ASSERT_EQ(numberOfBytesWritten, (DWORD)size);
+#else
+    int fds[2];
+    ASSERT_EQ(pipe(fds), 0);
+    readPipe.reset(fds[0]);
+    writePipe.reset(fds[1]);
+    ASSERT_EQ(write(writePipe.get(), &i, size), size);
+#endif
+    descrs.AppendElement(FileDescriptor(std::move(readPipe)));
+  }
+  bool ok = mActor->SendManyHandles(descrs);
+  ASSERT_TRUE(ok);
+}
+
+}  // namespace mozilla::_ipdltest