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 16 namespace gwp_asan { 17 namespace 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. 24 void installSignalHandlers(gwp_asan::GuardedPoolAllocator *GPA, Printf_t Printf, 25 gwp_asan::backtrace::PrintBacktrace_t PrintBacktrace, 26 gwp_asan::backtrace::SegvBacktrace_t SegvBacktrace); 27 28 // Uninistall the signal handlers, test-only. 29 void uninstallSignalHandlers(); 30 } // namespace segv_handler 31 } // namespace gwp_asan 32 33 #endif // GWP_ASAN_OPTIONAL_SEGV_HANDLER_H_ 34