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https://github.com/yuzu-mirror/yuzu
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2910aa77b2
`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.
131 lines
7.4 KiB
C++
131 lines
7.4 KiB
C++
// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <algorithm>
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#include <array>
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#include <string>
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#if !defined(ARCHITECTURE_x86_64)
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#include <cstdlib> // for exit
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#endif
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#include "common/common_types.h"
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/// Textually concatenates two tokens. The double-expansion is required by the C preprocessor.
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#define CONCAT2(x, y) DO_CONCAT2(x, y)
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#define DO_CONCAT2(x, y) x##y
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/// Helper macros to insert unused bytes or words to properly align structs. These values will be
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/// zero-initialized.
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#define INSERT_PADDING_BYTES(num_bytes) \
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std::array<u8, num_bytes> CONCAT2(pad, __LINE__) {}
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#define INSERT_PADDING_WORDS(num_words) \
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std::array<u32, num_words> CONCAT2(pad, __LINE__) {}
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/// These are similar to the INSERT_PADDING_* macros but do not zero-initialize the contents.
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/// This keeps the structure trivial to construct.
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#define INSERT_PADDING_BYTES_NOINIT(num_bytes) std::array<u8, num_bytes> CONCAT2(pad, __LINE__)
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#define INSERT_PADDING_WORDS_NOINIT(num_words) std::array<u32, num_words> CONCAT2(pad, __LINE__)
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#ifndef _MSC_VER
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#ifdef ARCHITECTURE_x86_64
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#define Crash() __asm__ __volatile__("int $3")
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#else
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#define Crash() exit(1)
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#endif
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#else // _MSC_VER
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// Locale Cross-Compatibility
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#define locale_t _locale_t
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extern "C" {
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__declspec(dllimport) void __stdcall DebugBreak(void);
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}
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#define Crash() DebugBreak()
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#endif // _MSC_VER ndef
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// Generic function to get last error message.
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// Call directly after the command or use the error num.
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// This function might change the error code.
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// Defined in misc.cpp.
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[[nodiscard]] std::string GetLastErrorMsg();
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// Like GetLastErrorMsg(), but passing an explicit error code.
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// Defined in misc.cpp.
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[[nodiscard]] std::string NativeErrorToString(int e);
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#define DECLARE_ENUM_FLAG_OPERATORS(type) \
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[[nodiscard]] constexpr type operator|(type a, type b) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<type>(static_cast<T>(a) | static_cast<T>(b)); \
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} \
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[[nodiscard]] constexpr type operator&(type a, type b) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<type>(static_cast<T>(a) & static_cast<T>(b)); \
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} \
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[[nodiscard]] constexpr type operator^(type a, type b) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<type>(static_cast<T>(a) ^ static_cast<T>(b)); \
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} \
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constexpr type& operator|=(type& a, type b) noexcept { \
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a = a | b; \
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return a; \
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} \
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constexpr type& operator&=(type& a, type b) noexcept { \
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a = a & b; \
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return a; \
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} \
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constexpr type& operator^=(type& a, type b) noexcept { \
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a = a ^ b; \
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return a; \
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} \
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[[nodiscard]] constexpr type operator~(type key) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<type>(~static_cast<T>(key)); \
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} \
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[[nodiscard]] constexpr bool True(type key) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<T>(key) != 0; \
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} \
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[[nodiscard]] constexpr bool False(type key) noexcept { \
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using T = std::underlying_type_t<type>; \
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return static_cast<T>(key) == 0; \
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}
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/// Evaluates a boolean expression, and returns a result unless that expression is true.
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#define R_UNLESS(expr, res) \
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{ \
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if (!(expr)) { \
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if (res.IsError()) { \
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LOG_ERROR(Kernel, "Failed with result: {}", res.raw); \
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} \
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return res; \
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} \
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}
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#define R_SUCCEEDED(res) (res.IsSuccess())
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/// Evaluates an expression that returns a result, and returns the result if it would fail.
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#define R_TRY(res_expr) \
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{ \
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const auto _tmp_r_try_rc = (res_expr); \
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if (_tmp_r_try_rc.IsError()) { \
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return _tmp_r_try_rc; \
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} \
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}
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/// Evaluates a boolean expression, and succeeds if that expression is true.
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#define R_SUCCEED_IF(expr) R_UNLESS(!(expr), RESULT_SUCCESS)
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namespace Common {
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[[nodiscard]] constexpr u32 MakeMagic(char a, char b, char c, char d) {
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return u32(a) | u32(b) << 8 | u32(c) << 16 | u32(d) << 24;
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}
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} // namespace Common
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