1//===-- segv_handler.h ------------------------------------------*- 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_OPTIONAL_SEGV_HANDLER_H_ 10#define GWP_ASAN_OPTIONAL_SEGV_HANDLER_H_ 11 12#include "gwp_asan/guarded_pool_allocator.h" 13#include "gwp_asan/optional/backtrace.h" 14#include "gwp_asan/optional/printf.h" 15 16namespace gwp_asan { 17namespace segv_handler { 18// Install the SIGSEGV crash handler for printing use-after-free and heap- 19// buffer-{under|over}flow exceptions if the user asked for it. This is platform 20// specific as even though POSIX and Windows both support registering handlers 21// through signal(), we have to use platform-specific signal handlers to obtain 22// the address that caused the SIGSEGV exception. GPA->init() must be called 23// before this function. 24void installSignalHandlers(gwp_asan::GuardedPoolAllocator *GPA, Printf_t Printf, 25 gwp_asan::backtrace::PrintBacktrace_t PrintBacktrace, 26 gwp_asan::backtrace::SegvBacktrace_t SegvBacktrace, 27 bool Recoverable = false); 28 29// Uninistall the signal handlers, test-only. 30void uninstallSignalHandlers(); 31} // namespace segv_handler 32} // namespace gwp_asan 33 34#endif // GWP_ASAN_OPTIONAL_SEGV_HANDLER_H_ 35