122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Test sending and receiving Shmem values.
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*/
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#include "gtest/gtest.h"
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#include "mozilla/_ipdltest/IPDLUnitTest.h"
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#include "mozilla/_ipdltest/PTestShmemChild.h"
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#include "mozilla/_ipdltest/PTestShmemParent.h"
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using namespace mozilla::ipc;
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namespace mozilla::_ipdltest {
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class TestShmemParent : public PTestShmemParent {
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NS_INLINE_DECL_REFCOUNTING(TestShmemParent, override)
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private:
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IPCResult RecvTake(Shmem&& mem, Shmem&& unsafe,
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const uint32_t& expectedSize) final override {
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EXPECT_EQ(mem.Size<char>(), expectedSize)
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<< "expected shmem size " << expectedSize << ", but it has size "
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<< mem.Size<char>();
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EXPECT_EQ(unsafe.Size<char>(), expectedSize)
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<< "expected shmem size " << expectedSize << ", but it has size "
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<< unsafe.Size<char>();
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EXPECT_FALSE(strcmp(mem.get<char>(), "And yourself!"))
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<< "expected message was not written";
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EXPECT_FALSE(strcmp(unsafe.get<char>(), "And yourself!"))
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<< "expected message was not written";
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EXPECT_TRUE(DeallocShmem(mem));
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EXPECT_TRUE(DeallocShmem(unsafe));
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Close();
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return IPC_OK();
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}
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~TestShmemParent() = default;
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};
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class TestShmemChild : public PTestShmemChild {
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NS_INLINE_DECL_REFCOUNTING(TestShmemChild, override)
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private:
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IPCResult RecvGive(Shmem&& mem, Shmem&& unsafe,
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const uint32_t& expectedSize) final override {
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EXPECT_EQ(mem.Size<char>(), expectedSize)
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<< "expected shmem size " << expectedSize << ", but it has size "
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<< mem.Size<char>();
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EXPECT_EQ(unsafe.Size<char>(), expectedSize)
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<< "expected shmem size " << expectedSize << ", but it has size "
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<< unsafe.Size<char>();
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EXPECT_FALSE(strcmp(mem.get<char>(), "Hello!"))
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<< "expected message was not written";
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EXPECT_FALSE(strcmp(unsafe.get<char>(), "Hello!"))
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<< "expected message was not written";
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char* unsafeptr = unsafe.get<char>();
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memcpy(mem.get<char>(), "And yourself!", sizeof("And yourself!"));
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memcpy(unsafeptr, "And yourself!", sizeof("And yourself!"));
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Shmem unsafecopy = unsafe;
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EXPECT_TRUE(SendTake(std::move(mem), std::move(unsafe), expectedSize));
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// these checks also shouldn't fail in the child
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char uc1 = *unsafeptr;
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(void)uc1;
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char uc2 = *unsafecopy.get<char>();
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(void)uc2;
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return IPC_OK();
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}
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~TestShmemChild() = default;
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};
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IPDL_TEST(TestShmem) {
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Shmem mem;
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Shmem unsafe;
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uint32_t size = 12345;
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EXPECT_TRUE(mActor->AllocShmem(size, &mem)) << "can't alloc shmem";
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EXPECT_TRUE(mActor->AllocUnsafeShmem(size, &unsafe)) << "can't alloc shmem";
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EXPECT_EQ(mem.Size<char>(), size) << "shmem is wrong size: expected " << size
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<< ", got " << mem.Size<char>();
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EXPECT_EQ(unsafe.Size<char>(), size)
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<< "shmem is wrong size: expected " << size << ", got "
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<< unsafe.Size<char>();
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char* ptr = mem.get<char>();
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memcpy(ptr, "Hello!", sizeof("Hello!"));
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char* unsafeptr = unsafe.get<char>();
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memcpy(unsafeptr, "Hello!", sizeof("Hello!"));
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Shmem unsafecopy = unsafe;
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EXPECT_TRUE(mActor->SendGive(std::move(mem), std::move(unsafe), size));
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// uncomment the following line for a (nondeterministic) surprise!
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// char c1 = *ptr; (void)c1;
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// uncomment the following line for a deterministic surprise!
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// char c2 = *mem.get<char>(); (void)c2;
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// unsafe shmem gets rid of those checks
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char uc1 = *unsafeptr;
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(void)uc1;
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char uc2 = *unsafecopy.get<char>();
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(void)uc2;
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}
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} // namespace mozilla::_ipdltest
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