BackgroundMusic/SharedSource/BGM_Utils.h
Kyle Neideck ab9d4cdc2b
Add more exception handling to BGMApp...
And other reliability improvements. Mostly in BGMPlayThrough and the
classes that use it. Trying to catch C++ exceptions as early as possible
in the Objective-C++ code and, if necessary, convert them to NSErrors.

More errors are logged in release builds now, which will hopefully help
with debugging issues the developers can't reproduce themselves.
2016-12-15 03:20:07 +11:00

138 lines
5.4 KiB
C++

// This file is part of Background Music.
//
// Background Music is free software: you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 2 of the
// License, or (at your option) any later version.
//
// Background Music is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Background Music. If not, see <http://www.gnu.org/licenses/>.
//
// BGM_Utils.h
// SharedSource
//
// Copyright © 2016 Kyle Neideck
//
#ifndef SharedSource__BGM_Utils
#define SharedSource__BGM_Utils
// PublicUtility Includes
#include "CADebugMacros.h"
#include "CAException.h"
#if defined(__cplusplus)
// STL Includes
#include <functional>
#endif /* defined(__cplusplus) */
// System Includes
#include <mach/error.h>
// The Assert macro from CADebugMacros with support for format strings added.
#define BGMAssert(inCondition, inMessage, ...) \
if(!(inCondition)) \
{ \
DebugMsg(inMessage, ## __VA_ARGS__); \
__ASSERT_STOP; \
}
#pragma clang assume_nonnull begin
#if defined(__cplusplus)
#define BGMLogAndSwallowExceptions(callerName, function) \
BGM_Utils::LogAndSwallowExceptions(__FILE__, __LINE__, callerName, function)
#define BGMLogAndSwallowExceptionsMsg(callerName, message, function) \
BGM_Utils::LogAndSwallowExceptions(__FILE__, __LINE__, callerName, message, function)
#define BGMLogUnexpectedException(callerName) \
BGM_Utils::LogUnexpectedException(__FILE__, __LINE__, callerName)
#define BGMLogUnexpectedExceptions(callerName, function) \
BGM_Utils::LogUnexpectedExceptions(__FILE__, __LINE__, callerName, function)
#define BGMLogUnexpectedExceptionsMsg(callerName, message, function) \
BGM_Utils::LogUnexpectedExceptions(__FILE__, __LINE__, callerName, message, function)
namespace BGM_Utils
{
// Log (and swallow) errors returned by Mach functions. Returns false if there was an error.
bool LogIfMachError(const char* callerName,
const char* errorReturnedBy,
mach_error_t error);
// Similar to ThrowIfKernelError from CADebugMacros.h, but also logs (in debug builds) the
// Mach error string that corresponds to the error.
void ThrowIfMachError(const char* callerName,
const char* errorReturnedBy,
mach_error_t error);
// If function throws an exception, log an error and continue.
//
// Fails/stops debug builds. It's likely that if we log an error for an exception in release
// builds, even if it's expected (i.e. not a bug in Background Music), we'd want to know if
// it gets thrown during testing/debugging.
OSStatus LogAndSwallowExceptions(const char* __nullable fileName,
int lineNumber,
const char* callerName,
const std::function<void(void)>& function);
OSStatus LogAndSwallowExceptions(const char* __nullable fileName,
int lineNumber,
const char* callerName,
const char* __nullable message,
const std::function<void(void)>& function);
void LogException(const char* __nullable fileName,
int lineNumber,
const char* callerName,
CAException e);
void LogUnexpectedException(const char* __nullable fileName,
int lineNumber,
const char* callerName);
OSStatus LogUnexpectedExceptions(const char* callerName,
const std::function<void(void)>& function);
OSStatus LogUnexpectedExceptions(const char* __nullable fileName,
int lineNumber,
const char* callerName,
const std::function<void(void)>& function);
// Log unexpected exceptions and continue.
//
// Generally, you don't want to use this unless the alternative is to crash. And even then
// crashing is often the better option. (Especially if we've added crash reporting by the
// time you're reading this.)
//
// Fails/stops debug builds.
//
// TODO: Allow a format string and args for the message.
OSStatus LogUnexpectedExceptions(const char* __nullable fileName,
int lineNumber,
const char* callerName,
const char* __nullable message,
const std::function<void(void)>& function);
}
#endif /* defined(__cplusplus) */
#pragma clang assume_nonnull end
#endif /* SharedSource__BGM_Utils */