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suyu/src/common/misc.cpp

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License change
2014-12-17 06:38:14 +01:00
// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
replaced common code with dolphin common
2013-09-05 02:17:46 +02:00
// Refer to the license.txt file included.
Common: Cleanup memory and misc includes.
2015-06-21 14:12:49 +02:00
#include <cstddef>
re-enabled GetLastErrorMsg
2013-09-09 02:41:23 +02:00
#ifdef _WIN32
common/misc: use windows.h linux-mingw does not really like this.
2018-08-13 22:28:24 +02:00
#include <windows.h>
Common: Remove common.h
2015-05-06 09:06:12 +02:00
#else
Common: Cleanup memory and misc includes.
2015-06-21 14:12:49 +02:00
#include <cerrno>
#include <cstring>
re-enabled GetLastErrorMsg
2013-09-09 02:41:23 +02:00
#endif
common/misc: Deduplicate code in GetLastErrorMsg() Android and macOS have supported thread_local for quite a while, but most importantly is that we don't even really need it. Instead of using a thread-local buffer, we can just return a non-static buffer as a std::string, avoiding the need for that quality entirely.
2018-07-19 15:03:30 +02:00
#include "common/common_funcs.h"
replaced common code with dolphin common
2013-09-05 02:17:46 +02:00
[network] Error handling reform `network.cpp` has several error paths which either: - report "Unhandled host socket error=n" and return `SUCCESS`, or - switch on a few possible errors, log them, and translate them to Errno; the same switch statement is copied and pasted in multiple places in the code Convert these paths to use a helper function `GetAndLogLastError`, which is roughly the equivalent of one of the switch statements, but: - handling more cases (both ones that were already in `Errno`, and a few more I added), and - using OS functions to convert the error to a string when logging, so it'll describe the error even if it's not one of the ones in the switch statement. - To handle this, refactor the logic in `GetLastErrorMsg` to expose a new function `NativeErrorToString` which takes the error number explicitly as an argument. And improve the Windows version a bit. Also, add a test which exercises two random error paths.
2021-01-24 21:17:02 +01:00
std::string NativeErrorToString(int e) {
re-enabled GetLastErrorMsg
2013-09-09 02:41:23 +02:00
#ifdef _WIN32
[network] Error handling reform `network.cpp` has several error paths which either: - report "Unhandled host socket error=n" and return `SUCCESS`, or - switch on a few possible errors, log them, and translate them to Errno; the same switch statement is copied and pasted in multiple places in the code Convert these paths to use a helper function `GetAndLogLastError`, which is roughly the equivalent of one of the switch statements, but: - handling more cases (both ones that were already in `Errno`, and a few more I added), and - using OS functions to convert the error to a string when logging, so it'll describe the error even if it's not one of the ones in the switch statement. - To handle this, refactor the logic in `GetLastErrorMsg` to expose a new function `NativeErrorToString` which takes the error number explicitly as an argument. And improve the Windows version a bit. Also, add a test which exercises two random error paths.
2021-01-24 21:17:02 +01:00
LPSTR err_str;
DWORD res = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPSTR>(&err_str), 1, nullptr);
if (!res) {
return "(FormatMessageA failed to format error)";
}
std::string ret(err_str);
LocalFree(err_str);
return ret;
#else
char err_str[255];
#if defined(__GLIBC__) && (_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600))
General: Make ignoring a discarded return value an error Allows our CI to catch more potential bugs. This also removes the [[nodiscard]] attribute of IOFile's Open member function. There are cases where a file may want to be opened, but have the status of it checked at a later time.
2020-10-30 04:30:42 +01:00
// Thread safe (GNU-specific)
[network] Error handling reform `network.cpp` has several error paths which either: - report "Unhandled host socket error=n" and return `SUCCESS`, or - switch on a few possible errors, log them, and translate them to Errno; the same switch statement is copied and pasted in multiple places in the code Convert these paths to use a helper function `GetAndLogLastError`, which is roughly the equivalent of one of the switch statements, but: - handling more cases (both ones that were already in `Errno`, and a few more I added), and - using OS functions to convert the error to a string when logging, so it'll describe the error even if it's not one of the ones in the switch statement. - To handle this, refactor the logic in `GetLastErrorMsg` to expose a new function `NativeErrorToString` which takes the error number explicitly as an argument. And improve the Windows version a bit. Also, add a test which exercises two random error paths.
2021-01-24 21:17:02 +01:00
const char* str = strerror_r(e, err_str, sizeof(err_str));
General: Make ignoring a discarded return value an error Allows our CI to catch more potential bugs. This also removes the [[nodiscard]] attribute of IOFile's Open member function. There are cases where a file may want to be opened, but have the status of it checked at a later time.
2020-10-30 04:30:42 +01:00
return std::string(str);
re-enabled GetLastErrorMsg
2013-09-09 02:41:23 +02:00
#else
convert tabs to spaces
2014-04-02 00:20:08 +02:00
// Thread safe (XSI-compliant)
[network] Error handling reform `network.cpp` has several error paths which either: - report "Unhandled host socket error=n" and return `SUCCESS`, or - switch on a few possible errors, log them, and translate them to Errno; the same switch statement is copied and pasted in multiple places in the code Convert these paths to use a helper function `GetAndLogLastError`, which is roughly the equivalent of one of the switch statements, but: - handling more cases (both ones that were already in `Errno`, and a few more I added), and - using OS functions to convert the error to a string when logging, so it'll describe the error even if it's not one of the ones in the switch statement. - To handle this, refactor the logic in `GetLastErrorMsg` to expose a new function `NativeErrorToString` which takes the error number explicitly as an argument. And improve the Windows version a bit. Also, add a test which exercises two random error paths.
2021-01-24 21:17:02 +01:00
int second_err = strerror_r(e, err_str, sizeof(err_str));
if (second_err != 0) {
return "(strerror_r failed to format error)";
General: Make ignoring a discarded return value an error Allows our CI to catch more potential bugs. This also removes the [[nodiscard]] attribute of IOFile's Open member function. There are cases where a file may want to be opened, but have the status of it checked at a later time.
2020-10-30 04:30:42 +01:00
}
return std::string(err_str);
[network] Error handling reform `network.cpp` has several error paths which either: - report "Unhandled host socket error=n" and return `SUCCESS`, or - switch on a few possible errors, log them, and translate them to Errno; the same switch statement is copied and pasted in multiple places in the code Convert these paths to use a helper function `GetAndLogLastError`, which is roughly the equivalent of one of the switch statements, but: - handling more cases (both ones that were already in `Errno`, and a few more I added), and - using OS functions to convert the error to a string when logging, so it'll describe the error even if it's not one of the ones in the switch statement. - To handle this, refactor the logic in `GetLastErrorMsg` to expose a new function `NativeErrorToString` which takes the error number explicitly as an argument. And improve the Windows version a bit. Also, add a test which exercises two random error paths.
2021-01-24 21:17:02 +01:00
#endif // GLIBC etc.
#endif // _WIN32
}
std::string GetLastErrorMsg() {
#ifdef _WIN32
return NativeErrorToString(GetLastError());
#else
return NativeErrorToString(errno);
re-enabled GetLastErrorMsg
2013-09-09 02:41:23 +02:00
#endif
}
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