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/*
* Copyright (c) 2016-2018 ARM Limited.
*
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __ARM_COMPUTE_ERROR_H__
#define __ARM_COMPUTE_ERROR_H__
#include <stdarg.h>
#include <string>
namespace arm_compute
{
/** Ignores unused arguments
*
* @tparam T Argument types
*
* @param[in] ... Ignored arguments
*/
template <typename... T>
inline void ignore_unused(T &&...)
{
}
/** Available error codes */
enum class ErrorCode
{
OK, /**< No error */
RUNTIME_ERROR, /**< Generic runtime error */
UNSUPPORTED_EXTENSION_USE /**< Unsupported extension used*/
};
/** Status class */
class Status
{
public:
/** Default Constructor **/
Status()
: _code(ErrorCode::OK), _error_description(" ")
{
}
/** Default Constructor
*
* @param error_status Error status.
* @param error_description (Optional) Error description if error_status is not valid.
*/
explicit Status(ErrorCode error_status, std::string error_description = " ")
: _code(error_status), _error_description(error_description)
{
}
/** Allow instances of this class to be copy constructed */
Status(const Status &) = default;
/** Allow instances of this class to be move constructed */
Status(Status &&) = default;
/** Allow instances of this class to be copy assigned */
Status &operator=(const Status &) = default;
/** Allow instances of this class to be move assigned */
Status &operator=(Status &&) = default;
/** Explicit bool conversion operator
*
* @return True if there is no error else false
*/
explicit operator bool() const noexcept
{
return _code == ErrorCode::OK;
}
/** Gets error code
*
* @return Error code.
*/
ErrorCode error_code() const
{
return _code;
}
/** Gets error description if any
*
* @return Error description.
*/
std::string error_description() const
{
return _error_description;
}
/** Throws a runtime exception in case it contains a valid error status */
void throw_if_error() const
{
if(!bool(*this))
{
internal_throw_on_error();
}
}
private:
/** Internal throwing function */
[[noreturn]] void internal_throw_on_error() const;
private:
ErrorCode _code;
std::string _error_description;
};
/** Creates an error containing the error message from variable argument list
*
* @param[in] error_code Error code
* @param[in] function Function in which the error occurred.
* @param[in] file Name of the file where the error occurred.
* @param[in] line Line on which the error occurred.
* @param[in] msg Message to display before aborting.
* @param[in] args Variable argument list of the message.
*
* @return status containing the error
*/
Status create_error_va_list(ErrorCode error_code, const char *function, const char *file, const int line, const char *msg, va_list args);
/** Creates an error containing the error message
*
* @param[in] error_code Error code
* @param[in] function Function in which the error occurred.
* @param[in] file Name of the file where the error occurred.
* @param[in] line Line on which the error occurred.
* @param[in] msg Message to display before aborting.
* @param[in] ... Variable number of arguments of the message.
*
* @return status containing the error
*/
Status create_error(ErrorCode error_code, const char *function, const char *file, const int line, const char *msg, ...);
/** Print an error message then throw an std::runtime_error
*
* @param[in] function Function in which the error occurred.
* @param[in] file Name of the file where the error occurred.
* @param[in] line Line on which the error occurred.
* @param[in] msg Message to display before aborting.
* @param[in] ... Variable number of arguments of the message.
*/
[[noreturn]] void error(const char *function, const char *file, const int line, const char *msg, ...);
}
/** To avoid unused variables warnings
*
* This is useful if for example a variable is only used
* in debug builds and generates a warning in release builds.
*
* @param[in] ... Variables which are unused.
*/
#define ARM_COMPUTE_UNUSED(...) ::arm_compute::ignore_unused(__VA_ARGS__) // NOLINT
/** Creates an error with a given message
*
* @param[in] error_code Error code.
* @param[in] ... Message to encapsulate.
*/
#define ARM_COMPUTE_CREATE_ERROR(error_code, ...) ::arm_compute::create_error(error_code, __func__, __FILE__, __LINE__, __VA_ARGS__) // NOLINT
/** Creates an error on location with a given message
*
* @param[in] error_code Error code.
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
* @param[in] ... Message to display before aborting.
*/
#define ARM_COMPUTE_CREATE_ERROR_LOC(error_code, func, file, line, ...) ::arm_compute::create_error(error_code, func, file, line, __VA_ARGS__) // NOLINT
/** An error is returned with the given description.
*
* @param[in] ... Error description message.
*/
#define ARM_COMPUTE_RETURN_ERROR_MSG(...) \
do \
{ \
return ARM_COMPUTE_CREATE_ERROR(arm_compute::ErrorCode::RUNTIME_ERROR, __VA_ARGS__); \
} while(false)
/** Checks if a status contains an error and returns it
*
* @param[in] status Status value to check
*/
#define ARM_COMPUTE_RETURN_ON_ERROR(status) \
do \
{ \
if(!bool(status)) \
{ \
return status; \
} \
} while(false)
/** Checks if an error value is valid if not throws an exception with the error
*
* @param[in] error Error value to check.
*/
#define ARM_COMPUTE_THROW_ON_ERROR(error) \
error.throw_if_error();
/** If the condition is true, an error is returned
*
* @param[in] cond Condition to evaluate.
* @param[in] ... Error description message
*/
#define ARM_COMPUTE_RETURN_ERROR_ON_MSG(cond, ...) \
do \
{ \
if(cond) \
{ \
return ARM_COMPUTE_CREATE_ERROR(arm_compute::ErrorCode::RUNTIME_ERROR, __VA_ARGS__); \
} \
} while(false)
/** If the condition is true, an error is thrown
*
* @param[in] cond Condition to evaluate.
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
* @param[in] ... Error description message.
*/
#define ARM_COMPUTE_RETURN_ERROR_ON_LOC_MSG(cond, func, file, line, ...) \
do \
{ \
if(cond) \
{ \
return ARM_COMPUTE_CREATE_ERROR_LOC(arm_compute::ErrorCode::RUNTIME_ERROR, func, file, line, __VA_ARGS__); \
} \
} while(false)
/** If the condition is true, an error is returned
*
* @param[in] cond Condition to evaluate
*/
#define ARM_COMPUTE_RETURN_ERROR_ON(cond) \
ARM_COMPUTE_RETURN_ERROR_ON_MSG(cond, #cond)
/** If the condition is true, an error is returned
*
* @param[in] cond Condition to evaluate.
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
*/
#define ARM_COMPUTE_RETURN_ERROR_ON_LOC(cond, func, file, line) \
ARM_COMPUTE_RETURN_ERROR_ON_LOC_MSG(cond, func, file, line, #cond)
/** Print the given message then throw an std::runtime_error.
*
* @param[in] ... Message to display before aborting.
*/
#define ARM_COMPUTE_ERROR(...) ::arm_compute::error(__func__, __FILE__, __LINE__, __VA_ARGS__) // NOLINT
/** Print the given message then throw an std::runtime_error.
*
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
* @param[in] ... Message to display before aborting.
*/
#define ARM_COMPUTE_ERROR_LOC(func, file, line, ...) ::arm_compute::error(func, file, line, __VA_ARGS__) // NOLINT
/** If the condition is true, the given message is printed and program exits
*
* @param[in] cond Condition to evaluate.
* @param[in] ... Message to print if cond is false.
*/
#define ARM_COMPUTE_EXIT_ON_MSG(cond, ...) \
do \
{ \
if(cond) \
{ \
ARM_COMPUTE_ERROR(__VA_ARGS__); \
} \
} while(false)
#ifdef ARM_COMPUTE_ASSERTS_ENABLED
/** Checks if a status value is valid if not throws an exception with the error
*
* @param[in] status Status value to check.
*/
#define ARM_COMPUTE_ERROR_THROW_ON(status) \
status.throw_if_error()
/** If the condition is true, the given message is printed and an exception is thrown
*
* @param[in] cond Condition to evaluate.
* @param[in] ... Message to print if cond is false.
*/
#define ARM_COMPUTE_ERROR_ON_MSG(cond, ...) \
ARM_COMPUTE_EXIT_ON_MSG(cond, __VA_ARGS__)
/** If the condition is true, the given message is printed and an exception is thrown
*
* @param[in] cond Condition to evaluate.
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
* @param[in] ... Message to print if cond is false.
*/
#define ARM_COMPUTE_ERROR_ON_LOC_MSG(cond, func, file, line, ...) \
do \
{ \
if(cond) \
{ \
ARM_COMPUTE_ERROR_LOC(func, file, line, __VA_ARGS__); \
} \
} while(false)
/** If the condition is true, the given message is printed and an exception is thrown, otherwise value is returned
*
* @param[in] cond Condition to evaluate.
* @param[in] val Value to be returned.
* @param[in] msg Message to print if cond is false.
*/
#define ARM_COMPUTE_CONST_ON_ERROR(cond, val, msg) (cond) ? throw std::logic_error(msg) : val;
#else /* ARM_COMPUTE_ASSERTS_ENABLED */
#define ARM_COMPUTE_ERROR_THROW_ON(status)
#define ARM_COMPUTE_ERROR_ON_MSG(cond, ...)
#define ARM_COMPUTE_ERROR_ON_LOC_MSG(cond, func, file, line, ...)
#define ARM_COMPUTE_CONST_ON_ERROR(cond, val, msg) val
#endif /* ARM_COMPUTE_ASSERTS_ENABLED */
/** If the condition is true then an error message is printed and an exception thrown
*
* @param[in] cond Condition to evaluate.
*/
#define ARM_COMPUTE_ERROR_ON(cond) \
ARM_COMPUTE_ERROR_ON_MSG(cond, #cond)
/** If the condition is true then an error message is printed and an exception thrown
*
* @param[in] cond Condition to evaluate.
* @param[in] func Function in which the error occurred.
* @param[in] file File in which the error occurred.
* @param[in] line Line in which the error occurred.
*/
#define ARM_COMPUTE_ERROR_ON_LOC(cond, func, file, line) \
ARM_COMPUTE_ERROR_ON_LOC_MSG(cond, func, file, line, #cond)
#ifndef ARM_COMPUTE_EXCEPTIONS_DISABLED
#define ARM_COMPUTE_THROW(ex) throw(ex)
#else /* ARM_COMPUTE_EXCEPTIONS_DISABLED */
#define ARM_COMPUTE_THROW(ex) (ex), std::abort()
#endif /* ARM_COMPUTE_EXCEPTIONS_DISABLED */
#endif /* __ARM_COMPUTE_ERROR_H__ */
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