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system/Error: add MakeErrno(), MakeLastError()

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This commit is contained in:
Max Kellermann 2015-12-18 01:06:12 +01:00
parent 93f4590453
commit fe60c52c70
1 changed files with 28 additions and 4 deletions
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32
src/system/Error.hxx
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@ -49,6 +49,19 @@ FormatSystemError(std::error_code code, const char *fmt, Args&&... args)
#include <windows.h> #include <windows.h>
static inline std::system_error
MakeLastError(DWORD code, const char *msg)
{
return std::system_error(std::error_code(code, std::system_category()),
msg);
}
static inline std::system_error
MakeLastError(const char *msg)
{
return MakeLastError(GetLastError(), msg);
}
template<typename... Args> template<typename... Args>
static inline std::system_error static inline std::system_error
FormatLastError(DWORD code, const char *fmt, Args&&... args) FormatLastError(DWORD code, const char *fmt, Args&&... args)
@ -64,8 +77,7 @@ FormatLastError(DWORD code, const char *fmt, Args&&... args)
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, code, 0, p, end - p, nullptr); nullptr, code, 0, p, end - p, nullptr);
return std::system_error(std::error_code(code, std::system_category()), return MakeLastError(code, buffer);
buffer);
} }
template<typename... Args> template<typename... Args>
@ -81,6 +93,19 @@ FormatLastError(const char *fmt, Args&&... args)
#include <errno.h> #include <errno.h>
#include <string.h> #include <string.h>
static inline std::system_error
MakeErrno(int code, const char *msg)
{
return std::system_error(std::error_code(code, std::system_category()),
msg);
}
static inline std::system_error
MakeErrno(const char *msg)
{
return MakeErrno(errno, msg);
}
template<typename... Args> template<typename... Args>
static inline std::system_error static inline std::system_error
FormatErrno(int code, const char *fmt, Args&&... args) FormatErrno(int code, const char *fmt, Args&&... args)
@ -94,8 +119,7 @@ FormatErrno(int code, const char *fmt, Args&&... args)
*p++ = ' '; *p++ = ' ';
CopyString(p, strerror(code), end - p); CopyString(p, strerror(code), end - p);
return std::system_error(std::error_code(code, std::system_category()), return MakeErrno(code, buffer);
buffer);
} }
template<typename... Args> template<typename... Args>