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/*
* Copyright (C) 2018 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 _LIBUNWINDSTACK_ERROR_H
#define _LIBUNWINDSTACK_ERROR_H
#include <stdint.h>
namespace unwindstack {
// A bit map of warnings, multiple warnings can be set at the same time.
enum WarningCode : uint64_t {
WARNING_NONE = 0,
WARNING_DEX_PC_NOT_IN_MAP = 0x1, // A dex pc was found, but it doesn't exist
// in any valid map.
};
enum ErrorCode : uint8_t {
ERROR_NONE, // No error.
ERROR_MEMORY_INVALID, // Memory read failed.
ERROR_UNWIND_INFO, // Unable to use unwind information to unwind.
ERROR_UNSUPPORTED, // Encountered unsupported feature.
ERROR_INVALID_MAP, // Unwind in an invalid map.
ERROR_MAX_FRAMES_EXCEEDED, // The number of frames exceed the total allowed.
ERROR_REPEATED_FRAME, // The last frame has the same pc/sp as the next.
ERROR_INVALID_ELF, // Unwind in an invalid elf.
ERROR_THREAD_DOES_NOT_EXIST, // Attempt to unwind a local thread that does
// not exist.
ERROR_THREAD_TIMEOUT, // Timeout trying to unwind a local thread.
ERROR_SYSTEM_CALL, // System call failed while unwinding.
ERROR_BAD_ARCH, // Arch invalid (none, or mismatched).
ERROR_MAPS_PARSE, // Failed to parse maps data.
ERROR_INVALID_PARAMETER, // Invalid parameter passed to function.
ERROR_MAX = ERROR_INVALID_PARAMETER,
};
static inline const char* GetErrorCodeString(ErrorCode error) {
switch (error) {
case ERROR_NONE:
return "None";
case ERROR_MEMORY_INVALID:
return "Memory Invalid";
case ERROR_UNWIND_INFO:
return "Unwind Info";
case ERROR_UNSUPPORTED:
return "Unsupported";
case ERROR_INVALID_MAP:
return "Invalid Map";
case ERROR_MAX_FRAMES_EXCEEDED:
return "Maximum Frames Exceeded";
case ERROR_REPEATED_FRAME:
return "Repeated Frame";
case ERROR_INVALID_ELF:
return "Invalid Elf";
case ERROR_THREAD_DOES_NOT_EXIST:
return "Thread Does Not Exist";
case ERROR_THREAD_TIMEOUT:
return "Thread Timeout";
case ERROR_SYSTEM_CALL:
return "System Call Failed";
case ERROR_BAD_ARCH:
return "Invalid arch detected";
case ERROR_MAPS_PARSE:
return "Failed to parse maps";
case ERROR_INVALID_PARAMETER:
return "Invalid parameter";
}
}
struct ErrorData {
ErrorCode code;
uint64_t address; // Only valid when code is ERROR_MEMORY_INVALID.
// Indicates the failing address.
};
} // namespace unwindstack
#endif // _LIBUNWINDSTACK_ERROR_H
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