1//===-- options.inc ---------------------------------------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef GWP_ASAN_OPTION 10#error "Define GWP_ASAN_OPTION prior to including this file!" 11#endif 12 13GWP_ASAN_OPTION(bool, Enabled, true, "Is GWP-ASan enabled? Defaults to true.") 14 15GWP_ASAN_OPTION( 16 bool, PerfectlyRightAlign, false, 17 "When allocations are right-aligned, should we perfectly align them up to " 18 "the page boundary? By default (false), we round up allocation size to the " 19 "nearest power of two (1, 2, 4, 8, 16) up to a maximum of 16-byte " 20 "alignment for performance reasons. Setting this to true can find single " 21 "byte buffer-overflows for multibyte allocations at the cost of " 22 "performance, and may be incompatible with some architectures.") 23 24GWP_ASAN_OPTION( 25 int, MaxSimultaneousAllocations, 16, 26 "Number of usable guarded slots in the allocation pool. Defaults to 16.") 27 28GWP_ASAN_OPTION(int, SampleRate, 5000, 29 "The probability (1 / SampleRate) that an allocation is " 30 "selected for GWP-ASan sampling. Default is 5000. Sample rates " 31 "up to (2^31 - 1) are supported.") 32 33GWP_ASAN_OPTION( 34 bool, InstallSignalHandlers, true, 35 "Install GWP-ASan signal handlers for SIGSEGV during dynamic loading. This " 36 "allows better error reports by providing stack traces for allocation and " 37 "deallocation when reporting a memory error. GWP-ASan's signal handler " 38 "will forward the signal to any previously-installed handler, and user " 39 "programs that install further signal handlers should make sure they do " 40 "the same. Note, if the previously installed SIGSEGV handler is SIG_IGN, " 41 "we terminate the process after dumping the error report.") 42