5ed2428b3c
The system API's will be shifted over to returning an error_code, and returning
other return values as out parameters to the function.
Code that needs to check error conditions will use the errc enum values which
are the same as the posix_errno defines (EBADF, E2BIG, etc...), and are
compatable with the error codes in WinError.h due to some magic in system_error.
An example would be:
if (error_code ec = KillEvil("Java")) { // error_code can be converted to bool.
handle_error(ec);
}
llvm-svn: 119360
141 lines
6.8 KiB
C++
141 lines
6.8 KiB
C++
//===- llvm/System/Win32/system_error.inc - Windows error_code --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides the Windows specific implementation of the error_code
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// and error_condition classes.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic Windows code that
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//=== is guaranteed to work on *all* Windows variants.
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//===----------------------------------------------------------------------===//
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#include <Windows.h>
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#include <WinError.h>
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using namespace llvm;
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std::string
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_system_error_category::message(int ev) const {
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LPVOID lpMsgBuf = 0;
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DWORD retval = ::FormatMessageA(
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FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL,
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ev,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
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(LPSTR) &lpMsgBuf,
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0,
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NULL);
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if (retval == 0) {
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::LocalFree(lpMsgBuf);
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return std::string("Unknown error");
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}
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std::string str( static_cast<LPCSTR>(lpMsgBuf) );
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::LocalFree(lpMsgBuf);
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while (str.size()
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&& (str[str.size()-1] == '\n' || str[str.size()-1] == '\r'))
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str.erase( str.size()-1 );
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if (str.size() && str[str.size()-1] == '.')
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str.erase( str.size()-1 );
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return str;
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}
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// I'd rather not double the line count of the following.
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#define MAP_ERR_TO_COND(x, y) case x: return make_error_condition(errc::y)
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error_condition
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_system_error_category::default_error_condition(int ev) const {
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switch (ev) {
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MAP_ERR_TO_COND(0, success);
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// Windows system -> posix_errno decode table ---------------------------//
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// see WinError.h comments for descriptions of errors
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MAP_ERR_TO_COND(ERROR_ACCESS_DENIED, permission_denied);
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MAP_ERR_TO_COND(ERROR_ALREADY_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_BAD_UNIT, no_such_device);
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MAP_ERR_TO_COND(ERROR_BUFFER_OVERFLOW, filename_too_long);
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MAP_ERR_TO_COND(ERROR_BUSY, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_BUSY_DRIVE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_CANNOT_MAKE, permission_denied);
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MAP_ERR_TO_COND(ERROR_CANTOPEN, io_error);
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MAP_ERR_TO_COND(ERROR_CANTREAD, io_error);
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MAP_ERR_TO_COND(ERROR_CANTWRITE, io_error);
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MAP_ERR_TO_COND(ERROR_CURRENT_DIRECTORY, permission_denied);
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MAP_ERR_TO_COND(ERROR_DEV_NOT_EXIST, no_such_device);
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MAP_ERR_TO_COND(ERROR_DEVICE_IN_USE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_DIR_NOT_EMPTY, directory_not_empty);
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MAP_ERR_TO_COND(ERROR_DIRECTORY, invalid_argument);
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MAP_ERR_TO_COND(ERROR_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_FILE_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_FILE_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_HANDLE_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_INVALID_ACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_INVALID_DRIVE, no_such_device);
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MAP_ERR_TO_COND(ERROR_INVALID_FUNCTION, function_not_supported);
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MAP_ERR_TO_COND(ERROR_INVALID_HANDLE, invalid_argument);
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MAP_ERR_TO_COND(ERROR_INVALID_NAME, invalid_argument);
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MAP_ERR_TO_COND(ERROR_LOCK_VIOLATION, no_lock_available);
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MAP_ERR_TO_COND(ERROR_LOCKED, no_lock_available);
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MAP_ERR_TO_COND(ERROR_NEGATIVE_SEEK, invalid_argument);
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MAP_ERR_TO_COND(ERROR_NOACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_NOT_ENOUGH_MEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_NOT_READY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_NOT_SAME_DEVICE, cross_device_link);
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MAP_ERR_TO_COND(ERROR_OPEN_FAILED, io_error);
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MAP_ERR_TO_COND(ERROR_OPEN_FILES, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_OPERATION_ABORTED, operation_canceled);
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MAP_ERR_TO_COND(ERROR_OUTOFMEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_PATH_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_READ_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_RETRY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_SEEK, io_error);
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MAP_ERR_TO_COND(ERROR_SHARING_VIOLATION, permission_denied);
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MAP_ERR_TO_COND(ERROR_TOO_MANY_OPEN_FILES, too_many_files_open);
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MAP_ERR_TO_COND(ERROR_WRITE_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_WRITE_PROTECT, permission_denied);
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MAP_ERR_TO_COND(ERROR_SEM_TIMEOUT, timed_out);
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MAP_ERR_TO_COND(WSAEACCES, permission_denied);
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MAP_ERR_TO_COND(WSAEADDRINUSE, address_in_use);
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MAP_ERR_TO_COND(WSAEADDRNOTAVAIL, address_not_available);
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MAP_ERR_TO_COND(WSAEAFNOSUPPORT, address_family_not_supported);
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MAP_ERR_TO_COND(WSAEALREADY, connection_already_in_progress);
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MAP_ERR_TO_COND(WSAEBADF, bad_file_descriptor);
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MAP_ERR_TO_COND(WSAECONNABORTED, connection_aborted);
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MAP_ERR_TO_COND(WSAECONNREFUSED, connection_refused);
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MAP_ERR_TO_COND(WSAECONNRESET, connection_reset);
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MAP_ERR_TO_COND(WSAEDESTADDRREQ, destination_address_required);
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MAP_ERR_TO_COND(WSAEFAULT, bad_address);
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MAP_ERR_TO_COND(WSAEHOSTUNREACH, host_unreachable);
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MAP_ERR_TO_COND(WSAEINPROGRESS, operation_in_progress);
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MAP_ERR_TO_COND(WSAEINTR, interrupted);
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MAP_ERR_TO_COND(WSAEINVAL, invalid_argument);
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MAP_ERR_TO_COND(WSAEISCONN, already_connected);
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MAP_ERR_TO_COND(WSAEMFILE, too_many_files_open);
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MAP_ERR_TO_COND(WSAEMSGSIZE, message_size);
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MAP_ERR_TO_COND(WSAENAMETOOLONG, filename_too_long);
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MAP_ERR_TO_COND(WSAENETDOWN, network_down);
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MAP_ERR_TO_COND(WSAENETRESET, network_reset);
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MAP_ERR_TO_COND(WSAENETUNREACH, network_unreachable);
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MAP_ERR_TO_COND(WSAENOBUFS, no_buffer_space);
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MAP_ERR_TO_COND(WSAENOPROTOOPT, no_protocol_option);
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MAP_ERR_TO_COND(WSAENOTCONN, not_connected);
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MAP_ERR_TO_COND(WSAENOTSOCK, not_a_socket);
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MAP_ERR_TO_COND(WSAEOPNOTSUPP, operation_not_supported);
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MAP_ERR_TO_COND(WSAEPROTONOSUPPORT, protocol_not_supported);
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MAP_ERR_TO_COND(WSAEPROTOTYPE, wrong_protocol_type);
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MAP_ERR_TO_COND(WSAETIMEDOUT, timed_out);
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MAP_ERR_TO_COND(WSAEWOULDBLOCK, operation_would_block);
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default: return error_condition(ev, system_category());
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}
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}
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