summaryrefslogtreecommitdiffstats
path: root/ipc/ipdl/test/cxx/TestShmem.cpp
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /ipc/ipdl/test/cxx/TestShmem.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
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.cpp106
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