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pcsx2/common/Exceptions.cpp

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/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2010 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 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 PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "Threading.h"
#include "General.h"
#include "Exceptions.h"
#include "CrashHandler.h"
#include <mutex>
#include "fmt/core.h"
#ifdef _WIN32
#include "RedtapeWindows.h"
#include <intrin.h>
#include <tlhelp32.h>
#endif
#ifdef __UNIX__
#include <signal.h>
#endif
// Because wxTrap isn't available on Linux builds of wxWidgets (non-Debug, typically)
void pxTrap()
{
#if defined(_WIN32)
__debugbreak();
#elif defined(__UNIX__)
raise(SIGTRAP);
#else
abort();
#endif
}
static std::mutex s_assertion_failed_mutex;
static inline void FreezeThreads(void** handle)
{
#if defined(_WIN32)
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
if (snapshot != INVALID_HANDLE_VALUE)
{
THREADENTRY32 threadEntry;
if (Thread32First(snapshot, &threadEntry))
{
do
{
if (threadEntry.th32ThreadID == GetCurrentThreadId())
continue;
HANDLE hThread = OpenThread(THREAD_SUSPEND_RESUME, FALSE, threadEntry.th32ThreadID);
if (hThread != nullptr)
{
SuspendThread(hThread);
CloseHandle(hThread);
}
} while (Thread32Next(snapshot, &threadEntry));
}
}
*handle = static_cast<void*>(snapshot);
#else
* handle = nullptr;
#endif
}
static inline void ResumeThreads(void* handle)
{
#if defined(_WIN32)
if (handle != INVALID_HANDLE_VALUE)
{
THREADENTRY32 threadEntry;
if (Thread32First(reinterpret_cast<HANDLE>(handle), &threadEntry))
{
do
{
if (threadEntry.th32ThreadID == GetCurrentThreadId())
continue;
HANDLE hThread = OpenThread(THREAD_SUSPEND_RESUME, FALSE, threadEntry.th32ThreadID);
if (hThread != nullptr)
{
ResumeThread(hThread);
CloseHandle(hThread);
}
} while (Thread32Next(reinterpret_cast<HANDLE>(handle), &threadEntry));
}
CloseHandle(reinterpret_cast<HANDLE>(handle));
}
#else
#endif
}
void pxOnAssertFail(const char* file, int line, const char* func, const char* msg)
{
std::unique_lock guard(s_assertion_failed_mutex);
void* handle;
FreezeThreads(&handle);
char full_msg[512];
std::snprintf(full_msg, sizeof(full_msg), "%s:%d: assertion failed in function %s: %s\n", file, line, func, msg);
#if defined(_WIN32)
HANDLE error_handle = GetStdHandle(STD_ERROR_HANDLE);
if (error_handle != INVALID_HANDLE_VALUE)
WriteConsoleA(GetStdHandle(STD_ERROR_HANDLE), full_msg, static_cast<DWORD>(std::strlen(full_msg)), NULL, NULL);
OutputDebugStringA(full_msg);
std::snprintf(
full_msg, sizeof(full_msg),
"Assertion failed in function %s (%s:%d):\n\n%s\n\nPress Abort to exit, Retry to break to debugger, or Ignore to attempt to continue.",
func, file, line, msg);
int result = MessageBoxA(NULL, full_msg, NULL, MB_ABORTRETRYIGNORE | MB_ICONERROR);
if (result == IDRETRY)
{
__debugbreak();
}
else if (result != IDIGNORE)
{
// try to save a crash dump before exiting
CrashHandler::WriteDumpForCaller();
TerminateProcess(GetCurrentProcess(), 0xBAADC0DE);
}
#else
fputs(full_msg, stderr);
fputs("\nAborting application.\n", stderr);
fflush(stderr);
AbortWithMessage(full_msg);
#endif
ResumeThreads(handle);
}
// --------------------------------------------------------------------------------------
// BaseException (implementations)
// --------------------------------------------------------------------------------------
BaseException& BaseException::SetBothMsgs(const char* msg_diag)
{
m_message_user = msg_diag ? std::string(msg_diag) : std::string();
return SetDiagMsg(msg_diag);
}
BaseException& BaseException::SetDiagMsg(std::string msg_diag)
{
m_message_diag = std::move(msg_diag);
return *this;
}
BaseException& BaseException::SetUserMsg(std::string msg_user)
{
m_message_user = std::move(msg_user);
return *this;
}
std::string BaseException::FormatDiagnosticMessage() const
{
return m_message_diag;
}
std::string BaseException::FormatDisplayMessage() const
{
return m_message_user.empty() ? m_message_diag : m_message_user;
}
// --------------------------------------------------------------------------------------
// Exception::RuntimeError (implementations)
// --------------------------------------------------------------------------------------
Exception::RuntimeError::RuntimeError(const std::runtime_error& ex, const char* prefix /* = nullptr */)
{
IsSilent = false;
const bool has_prefix = prefix && prefix[0] != 0;
SetDiagMsg(fmt::format("STL Runtime Error{}{}{}: {}",
has_prefix ? " (" : "", prefix ? prefix : "", has_prefix ? ")" : "",
ex.what()));
}
Exception::RuntimeError::RuntimeError(const std::exception& ex, const char* prefix /* = nullptr */)
{
IsSilent = false;
const bool has_prefix = prefix && prefix[0] != 0;
SetDiagMsg(fmt::format("STL Exception{}{}{}: {}",
has_prefix ? " (" : "", prefix ? prefix : "", has_prefix ? ")" : "",
ex.what()));
}
// --------------------------------------------------------------------------------------
// Exception::BadStream (implementations)
// --------------------------------------------------------------------------------------
std::string Exception::BadStream::FormatDiagnosticMessage() const
{
std::string retval;
_formatDiagMsg(retval);
return retval;
}
std::string Exception::BadStream::FormatDisplayMessage() const
{
std::string retval;
_formatUserMsg(retval);
return retval;
}
void Exception::BadStream::_formatDiagMsg(std::string& dest) const
{
fmt::format_to(std::back_inserter(dest), "Path: ");
if (!StreamName.empty())
fmt::format_to(std::back_inserter(dest), "{}", StreamName);
else
dest += "[Unnamed or unknown]";
if (!m_message_diag.empty())
fmt::format_to(std::back_inserter(dest), "\n{}", m_message_diag);
}
void Exception::BadStream::_formatUserMsg(std::string& dest) const
{
fmt::format_to(std::back_inserter(dest), "Path: ");
if (!StreamName.empty())
fmt::format_to(std::back_inserter(dest), "{}", StreamName);
else
dest += "[Unnamed or unknown]";
if (!m_message_user.empty())
fmt::format_to(std::back_inserter(dest), "\n{}", m_message_user);
}
// --------------------------------------------------------------------------------------
// Exception::CannotCreateStream (implementations)
// --------------------------------------------------------------------------------------
std::string Exception::CannotCreateStream::FormatDiagnosticMessage() const
{
std::string retval;
retval = "File could not be created.";
_formatDiagMsg(retval);
return retval;
}
std::string Exception::CannotCreateStream::FormatDisplayMessage() const
{
std::string retval;
retval = "A file could not be created.\n";
_formatUserMsg(retval);
return retval;
}
// --------------------------------------------------------------------------------------
// Exception::FileNotFound (implementations)
// --------------------------------------------------------------------------------------
std::string Exception::FileNotFound::FormatDiagnosticMessage() const
{
std::string retval;
retval = "File not found.\n";
_formatDiagMsg(retval);
return retval;
}
std::string Exception::FileNotFound::FormatDisplayMessage() const
{
std::string retval;
retval = "File not found.\n";
_formatUserMsg(retval);
return retval;
}
// --------------------------------------------------------------------------------------
// Exception::AccessDenied (implementations)
// --------------------------------------------------------------------------------------
std::string Exception::AccessDenied::FormatDiagnosticMessage() const
{
std::string retval;
retval = "Permission denied to file.\n";
_formatDiagMsg(retval);
return retval;
}
std::string Exception::AccessDenied::FormatDisplayMessage() const
{
std::string retval;
retval = "Permission denied while trying to open file, likely due to insufficient user account rights.\n";
_formatUserMsg(retval);
return retval;
}
// --------------------------------------------------------------------------------------
// Exception::EndOfStream (implementations)
// --------------------------------------------------------------------------------------
std::string Exception::EndOfStream::FormatDiagnosticMessage() const
{
std::string retval;
retval = "Unexpected end of file or stream.\n";
_formatDiagMsg(retval);
return retval;
}
std::string Exception::EndOfStream::FormatDisplayMessage() const
{
std::string retval;
retval = "Unexpected end of file or stream encountered. File is probably truncated or corrupted.\n";
_formatUserMsg(retval);
return retval;
}
// --------------------------------------------------------------------------------------
// Exceptions from Errno (POSIX)
// --------------------------------------------------------------------------------------
// Translates an Errno code into an exception.
// Throws an exception based on the given error code (usually taken from ANSI C's errno)
std::unique_ptr<BaseException> Exception::FromErrno(std::string streamname, int errcode)
{
pxAssumeDev(errcode != 0, "Invalid NULL error code? (errno)");
switch (errcode)
{
case EINVAL:
pxFailDev("Invalid argument");
return std::unique_ptr<BaseException>(&(new Exception::BadStream(streamname))->SetDiagMsg("Invalid argument? (likely caused by an unforgivable programmer error!)"));
case EACCES: // Access denied!
return std::unique_ptr<BaseException>(new Exception::AccessDenied(streamname));
case EMFILE: // Too many open files!
return std::unique_ptr<BaseException>(&(new Exception::CannotCreateStream(streamname))->SetDiagMsg("Too many open files")); // File handle allocation failure
case EEXIST:
return std::unique_ptr<BaseException>(&(new Exception::CannotCreateStream(streamname))->SetDiagMsg("File already exists"));
case ENOENT: // File not found!
return std::unique_ptr<BaseException>(new Exception::FileNotFound(streamname));
case EPIPE:
return std::unique_ptr<BaseException>(&(new Exception::BadStream(streamname))->SetDiagMsg("Broken pipe"));
case EBADF:
return std::unique_ptr<BaseException>(&(new Exception::BadStream(streamname))->SetDiagMsg("Bad file number"));
default:
return std::unique_ptr<BaseException>(&(new Exception::BadStream(streamname))->SetDiagMsg(fmt::format("General file/stream error [errno: {}]", errcode)));
}
}
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