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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_SIGCHAINLIB_SIGCHAIN_H_
#define ART_SIGCHAINLIB_SIGCHAIN_H_
// TODO(b/142944043): Symbol changes here currently need to be reflected in
// version scripts in frameworks/base/cmds/app_process. The plan is to convert
// libsigchain to a shared lib to get rid of them.
#include <signal.h>
#include <stdint.h>
namespace art {
// Handlers that exit without returning to their caller (e.g. via siglongjmp) must pass this flag.
static constexpr uint64_t SIGCHAIN_ALLOW_NORETURN = 0x1UL;
struct SigchainAction {
bool (*sc_sigaction)(int, siginfo_t*, void*);
sigset_t sc_mask;
uint64_t sc_flags;
};
extern "C" void AddSpecialSignalHandlerFn(int signal, SigchainAction* sa);
extern "C" void RemoveSpecialSignalHandlerFn(int signal, bool (*fn)(int, siginfo_t*, void*));
extern "C" void EnsureFrontOfChain(int signal);
extern "C" void SkipAddSignalHandler(bool value);
} // namespace art
#endif // ART_SIGCHAINLIB_SIGCHAIN_H_