TestManyHandles.cpp

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/* -*- 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