1 files changed, 59 insertions, 0 deletions
diff --git a/lib/gwp_asan/options.h b/lib/gwp_asan/options.h
new file mode 100644
index 000000000000..6423e16526f4
--- /dev/null
+++ b/lib/gwp_asan/options.h
@@ -0,0 +1,59 @@
+//===-- options.h -----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef GWP_ASAN_OPTIONS_H_
+#define GWP_ASAN_OPTIONS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace gwp_asan {
+namespace options {
+// The function pointer type for printf(). Follows the standard format from the
+// sanitizers library. If the supported allocator exposes printing via a
+// different function signature, please provide a wrapper which has this
+// printf() signature, and pass the wrapper instead.
+typedef void (*Printf_t)(const char *Format, ...);
+
+// The function pointer type for backtrace information. Required to be
+// implemented by the supporting allocator. The callee should elide itself and
+// all frames below itself from TraceBuffer, i.e. the caller's frame should be
+// in TraceBuffer[0], and subsequent frames 1..n into TraceBuffer[1..n], where a
+// maximum of `MaximumDepth - 1` frames are stored. TraceBuffer should be
+// nullptr-terminated (i.e. if there are 5 frames; TraceBuffer[5] == nullptr).
+// If the allocator cannot supply backtrace information, it should set
+// TraceBuffer[0] == nullptr.
+typedef void (*Backtrace_t)(uintptr_t *TraceBuffer, size_t Size);
+typedef void (*PrintBacktrace_t)(uintptr_t *TraceBuffer, Printf_t Print);
+
+struct Options {
+  Printf_t Printf = nullptr;
+  Backtrace_t Backtrace = nullptr;
+  PrintBacktrace_t PrintBacktrace = nullptr;
+
+  // Read the options from the included definitions file.
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  Type Name = DefaultValue;
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+
+  void setDefaults() {
+#define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description)                 \
+  Name = DefaultValue;
+#include "gwp_asan/options.inc"
+#undef GWP_ASAN_OPTION
+
+    Printf = nullptr;
+    Backtrace = nullptr;
+    PrintBacktrace = nullptr;
+  }
+};
+} // namespace options
+} // namespace gwp_asan
+
+#endif // GWP_ASAN_OPTIONS_H_