janwas
9864da20fc
SoundGroup.cpp: add proper error reporting if snd_open fails This was SVN commit r7493.
135 lines
3.4 KiB
C++
135 lines
3.4 KiB
C++
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* simple POSIX file wrapper.
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*/
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#include "precompiled.h"
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#include "lib/file/file.h"
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#include "lib/file/common/file_stats.h"
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ERROR_ASSOCIATE(ERR::FILE_ACCESS, L"Insufficient access rights to open file", EACCES);
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ERROR_ASSOCIATE(ERR::IO, L"Error during IO", EIO);
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namespace FileImpl {
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LibError Open(const fs::wpath& pathname, wchar_t mode, int& fd)
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{
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int oflag = -1;
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switch(mode)
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{
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case 'r':
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oflag = O_RDONLY;
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break;
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case 'w':
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oflag = O_WRONLY|O_CREAT|O_TRUNC;
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break;
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case '+':
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oflag = O_RDWR;
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break;
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default:
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debug_assert(0);
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}
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#if OS_WIN
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oflag |= O_BINARY_NP;
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#endif
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fd = wopen(pathname.string().c_str(), oflag, S_IRWXO|S_IRWXU|S_IRWXG);
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if(fd < 0)
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return LibError_from_errno();
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stats_open();
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return INFO::OK;
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}
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void Close(int& fd)
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{
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if(fd)
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{
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wclose(fd);
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fd = 0;
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}
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}
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LibError IO(int fd, wchar_t mode, off_t ofs, u8* buf, size_t size)
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{
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debug_assert(mode == 'r' || mode == 'w');
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ScopedIoMonitor monitor;
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lseek(fd, ofs, SEEK_SET);
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errno = 0;
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const ssize_t ret = (mode == 'w')? write(fd, buf, size) : read(fd, buf, size);
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if(ret < 0)
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return LibError_from_errno();
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const size_t totalTransferred = (size_t)ret;
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if(totalTransferred != size)
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WARN_RETURN(ERR::IO);
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monitor.NotifyOfSuccess(FI_LOWIO, mode, totalTransferred);
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return INFO::OK;
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}
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LibError Issue(aiocb& req, int fd, wchar_t mode, off_t alignedOfs, u8* alignedBuf, size_t alignedSize)
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{
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memset(&req, 0, sizeof(req));
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req.aio_lio_opcode = (mode == 'w')? LIO_WRITE : LIO_READ;
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req.aio_buf = (volatile void*)alignedBuf;
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req.aio_fildes = fd;
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req.aio_offset = alignedOfs;
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req.aio_nbytes = alignedSize;
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struct sigevent* sig = 0; // no notification signal
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aiocb* const reqs = &req;
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if(lio_listio(LIO_NOWAIT, &reqs, 1, sig) != 0)
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return LibError_from_errno();
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return INFO::OK;
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}
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LibError WaitUntilComplete(aiocb& req, u8*& alignedBuf, size_t& alignedSize)
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{
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// wait for transfer to complete.
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while(aio_error(&req) == EINPROGRESS)
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{
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aiocb* const reqs = &req;
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aio_suspend(&reqs, 1, (timespec*)0); // wait indefinitely
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}
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const ssize_t bytesTransferred = aio_return(&req);
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if(bytesTransferred == -1) // transfer failed
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WARN_RETURN(ERR::IO);
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alignedBuf = (u8*)req.aio_buf; // cast from volatile void*
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alignedSize = bytesTransferred;
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return INFO::OK;
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}
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} // namespace FileImpl
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