bool
GMPVideoDecoderChild::Alloc(size_t aSize,
Shmem::SharedMemory::SharedMemoryType aType,
Shmem* aMem)
{
MOZ_ASSERT(mPlugin->GMPMessageLoop() == MessageLoop::current());
bool rv;
#ifndef SHMEM_ALLOC_IN_CHILD
++mNeedShmemIntrCount;
rv = CallNeedShmem(aSize, aMem);
--mNeedShmemIntrCount;
if (mPendingDecodeComplete && mNeedShmemIntrCount == 0) {
mPendingDecodeComplete = false;
mPlugin->GMPMessageLoop()->PostTask(
NewRunnableMethod(this, &GMPVideoDecoderChild::RecvDecodingComplete));
}
#else
#ifdef GMP_SAFE_SHMEM
rv = AllocShmem(aSize, aType, aMem);
#else
rv = AllocUnsafeShmem(aSize, aType, aMem);
#endif
#endif
return rv;
}
void
TestSysVShmemParent::Main()
{
Shmem mem;
size_t size = 12345;
if (!AllocShmem(size, SharedMemory::TYPE_SYSV, &mem))
fail("can't alloc shmem");
if (0 > mem.GetSysVID())
fail("invalid shmem ID");
if (mem.Size<char>() != size)
fail("shmem is wrong size: expected %lu, got %lu",
size, mem.Size<char>());
char* ptr = mem.get<char>();
memcpy(ptr, "Hello!", sizeof("Hello!"));
if (!SendGive(mem, size))
fail("can't send Give()");
// uncomment the following line for a (nondeterministic) surprise!
//char c1 = *ptr; (void)c1;
// uncomment the following line for a deterministic surprise!
//char c2 = *mem.get<char>(); (void)c2;
}
void
TestShmemParent::Main()
{
Shmem mem;
Shmem unsafe;
size_t size = 12345;
if (!AllocShmem(size, SharedMemory::TYPE_BASIC, &mem))
fail("can't alloc shmem");
if (!AllocUnsafeShmem(size, SharedMemory::TYPE_BASIC, &unsafe))
fail("can't alloc shmem");
if (mem.Size<char>() != size)
fail("shmem is wrong size: expected %lu, got %lu",
size, mem.Size<char>());
if (unsafe.Size<char>() != size)
fail("shmem is wrong size: expected %lu, got %lu",
size, unsafe.Size<char>());
char* ptr = mem.get<char>();
memcpy(ptr, "Hello!", sizeof("Hello!"));
char* unsafeptr = unsafe.get<char>();
memcpy(unsafeptr, "Hello!", sizeof("Hello!"));
Shmem unsafecopy = unsafe;
if (!SendGive(mem, unsafe, size))
fail("can't send Give()");
// uncomment the following line for a (nondeterministic) surprise!
//char c1 = *ptr; (void)c1;
// uncomment the following line for a deterministic surprise!
//char c2 = *mem.get<char>(); (void)c2;
// unsafe shmem gets rid of those checks
char uc1 = *unsafeptr; (void)uc1;
char uc2 = *unsafecopy.get<char>(); (void)uc2;
}
