mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-19 06:43:58 -07:00
2374caac3e
. completely rewrite waio - use IOCP, add several hardcore optimizations. now outperforms the AS SSD and ATTO benchmarks when writing . refactor file interface - use LIO_READ instead of 'r', allow access to file descriptor. . completely rewrite the IO wrapper. now much more simple, less CPU overhead, adds support for pre-issue/post-completion hooks and preallocation. io::Run defaults to simple synchronous IO; use io::Parameters to get asynchronous. . add alignment.h with constants and Align() function template (more efficient than round_up for compile-time constants) . add UniqueRange - similar to C++0x unique_ptr (emulated for C++03), plus a built-in size. avoids expensive thread-safe reference counting in shared_ptr. cleanup: - move fat_time functions into archive_zip - remove no longer needed io_align and block_cache - reduce dependencies in sysdep/compiler (move parts to code_annotation.h) - move IOCP into separate file (reused by waio) This was SVN commit r9350.
74 lines
2 KiB
C++
74 lines
2 KiB
C++
/* Copyright (c) 2010 Wildfire Games
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* simple POSIX file wrapper.
|
|
*/
|
|
|
|
#include "precompiled.h"
|
|
#include "lib/file/file.h"
|
|
|
|
#include "lib/sysdep/filesystem.h" // O_*, S_*
|
|
#include "lib/file/common/file_stats.h"
|
|
|
|
|
|
ERROR_ASSOCIATE(ERR::FILE_ACCESS, L"Insufficient access rights to open file", EACCES);
|
|
|
|
|
|
LibError FileOpen(const OsPath& pathname, int opcode, int& fd)
|
|
{
|
|
int oflag = 0;
|
|
switch(opcode)
|
|
{
|
|
case LIO_READ:
|
|
oflag = O_RDONLY;
|
|
break;
|
|
case LIO_WRITE:
|
|
oflag = O_WRONLY|O_CREAT|O_TRUNC;
|
|
break;
|
|
default:
|
|
debug_assert(0);
|
|
break;
|
|
}
|
|
#if OS_WIN
|
|
oflag |= O_BINARY_NP;
|
|
#endif
|
|
// prevent exploits by disallowing writes to our files by other users.
|
|
// note that the system-wide installed cache is read-only.
|
|
const mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH; // 0644
|
|
fd = wopen(pathname, oflag, mode);
|
|
if(fd < 0)
|
|
return LibError_from_errno(false);
|
|
|
|
stats_open();
|
|
return INFO::OK;
|
|
}
|
|
|
|
|
|
void FileClose(int& fd)
|
|
{
|
|
if(fd >= 0)
|
|
{
|
|
wclose(fd);
|
|
fd = -1;
|
|
}
|
|
}
|