vendor/compiler-rt/compiler-rt-trunk-r366426

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/gwp_asan/options.inc b/lib/gwp_asan/options.inc
new file mode 100644
index 000000000000..9042b11895ae
--- /dev/null
+++ b/lib/gwp_asan/options.inc
@@ -0,0 +1,41 @@
+//===-- options.inc ---------------------------------------------*- 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_OPTION
+#error "Define GWP_ASAN_OPTION prior to including this file!"
+#endif
+
+GWP_ASAN_OPTION(bool, Enabled, true, "Is GWP-ASan enabled? Defaults to true.")
+
+GWP_ASAN_OPTION(
+    bool, PerfectlyRightAlign, false,
+    "When allocations are right-aligned, should we perfectly align them up to "
+    "the page boundary? By default (false), we round up allocation size to the "
+    "nearest power of two (1, 2, 4, 8, 16) up to a maximum of 16-byte "
+    "alignment for performance reasons. Setting this to true can find single "
+    "byte buffer-overflows for multibyte allocations at the cost of "
+    "performance, and may be incompatible with some architectures.")
+
+GWP_ASAN_OPTION(
+    int, MaxSimultaneousAllocations, 16,
+    "Number of usable guarded slots in the allocation pool. Defaults to 16.")
+
+GWP_ASAN_OPTION(int, SampleRate, 5000,
+                "The probability (1 / SampleRate) that an allocation is "
+                "selected for GWP-ASan sampling. Default is 5000. Sample rates "
+                "up to (2^31 - 1) are supported.")
+
+GWP_ASAN_OPTION(
+    bool, InstallSignalHandlers, true,
+    "Install GWP-ASan signal handlers for SIGSEGV during dynamic loading. This "
+    "allows better error reports by providing stack traces for allocation and "
+    "deallocation when reporting a memory error. GWP-ASan's signal handler "
+    "will forward the signal to any previously-installed handler, and user "
+    "programs that install further signal handlers should make sure they do "
+    "the same. Note, if the previously installed SIGSEGV handler is SIG_IGN, "
+    "we terminate the process after dumping the error report.")