1 files changed, 38 insertions, 0 deletions
diff --git a/tools/fuzzing/shmem/SharedMemoryFuzzer.h b/tools/fuzzing/shmem/SharedMemoryFuzzer.h
new file mode 100644
index 0000000000..bd862edf6a
--- /dev/null
+++ b/tools/fuzzing/shmem/SharedMemoryFuzzer.h
@@ -0,0 +1,38 @@
+/* -*- 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/. */
+
+#ifndef mozilla_dom_SharedMemoryFuzzer_h
+#define mozilla_dom_SharedMemoryFuzzer_h
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace mozilla {
+namespace ipc {
+
+/*
+ * Exposed environment variables:
+ * SHMEM_FUZZER_ENABLE=1
+ * SHMEM_FUZZER_ENABLE_LOGGING=1       (optional)
+ * SHMEM_FUZZER_MUTATION_PROBABILITY=2 (optional)
+ * SHMEM_FUZZER_MUTATION_FACTOR=500    (optional)
+ */
+
+class SharedMemoryFuzzer {
+ public:
+  static void* MutateSharedMemory(void* aMemory, size_t aSize);
+
+ private:
+  static uint64_t MutationProbability();
+  static uint64_t MutationFactor();
+  static bool IsEnabled();
+  static bool IsLoggingEnabled();
+};
+
+}  // namespace ipc
+}  // namespace mozilla
+
+#endif