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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /ipc/ipdl/test/cxx/TestShmem.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ipc/ipdl/test/cxx/TestShmem.cpp')
-rw-r--r-- | ipc/ipdl/test/cxx/TestShmem.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/ipc/ipdl/test/cxx/TestShmem.cpp b/ipc/ipdl/test/cxx/TestShmem.cpp new file mode 100644 index 0000000000..0a778e5322 --- /dev/null +++ b/ipc/ipdl/test/cxx/TestShmem.cpp @@ -0,0 +1,106 @@ +#include "TestShmem.h" + +#include "IPDLUnitTests.h" // fail etc. + +namespace mozilla { +namespace _ipdltest { + +//----------------------------------------------------------------------------- +// Parent + +void TestShmemParent::Main() { + Shmem mem; + Shmem unsafe; + + size_t size = 12345; + if (!AllocShmem(size, &mem)) fail("can't alloc shmem"); + if (!AllocUnsafeShmem(size, &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(std::move(mem), std::move(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; +} + +mozilla::ipc::IPCResult TestShmemParent::RecvTake(Shmem&& mem, Shmem&& unsafe, + const size_t& expectedSize) { + if (mem.Size<char>() != expectedSize) + fail("expected shmem size %lu, but it has size %lu", expectedSize, + mem.Size<char>()); + if (unsafe.Size<char>() != expectedSize) + fail("expected shmem size %lu, but it has size %lu", expectedSize, + unsafe.Size<char>()); + + if (strcmp(mem.get<char>(), "And yourself!")) + fail("expected message was not written"); + if (strcmp(unsafe.get<char>(), "And yourself!")) + fail("expected message was not written"); + + if (!DeallocShmem(mem)) fail("DeallocShmem"); + if (!DeallocShmem(unsafe)) fail("DeallocShmem"); + + Close(); + + return IPC_OK(); +} + +//----------------------------------------------------------------------------- +// Child + +mozilla::ipc::IPCResult TestShmemChild::RecvGive(Shmem&& mem, Shmem&& unsafe, + const size_t& expectedSize) { + if (mem.Size<char>() != expectedSize) + fail("expected shmem size %lu, but it has size %lu", expectedSize, + mem.Size<char>()); + if (unsafe.Size<char>() != expectedSize) + fail("expected shmem size %lu, but it has size %lu", expectedSize, + unsafe.Size<char>()); + + if (strcmp(mem.get<char>(), "Hello!")) + fail("expected message was not written"); + if (strcmp(unsafe.get<char>(), "Hello!")) + fail("expected message was not written"); + + char* unsafeptr = unsafe.get<char>(); + + memcpy(mem.get<char>(), "And yourself!", sizeof("And yourself!")); + memcpy(unsafeptr, "And yourself!", sizeof("And yourself!")); + + Shmem unsafecopy = unsafe; + if (!SendTake(std::move(mem), std::move(unsafe), expectedSize)) + fail("can't send Take()"); + + // these checks also shouldn't fail in the child + char uc1 = *unsafeptr; + (void)uc1; + char uc2 = *unsafecopy.get<char>(); + (void)uc2; + + return IPC_OK(); +} + +} // namespace _ipdltest +} // namespace mozilla |