本文整理汇总了C++中AsyncFio类的典型用法代码示例。如果您正苦于以下问题：C++ AsyncFio类的具体用法？C++ AsyncFio怎么用？C++ AsyncFio使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了AsyncFio类的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: readDir
void TocManager::readDir(const char *path, TocNode **node, int level) {
if (level <= 2) { // we don't scan deeper than that
iox_dirent_t dirent;
int fd = fio.dopen(path);
if (fd >= 0) {
while (fio.dread(fd, &dirent) > 0)
if (dirent.name[0] != '.') { // skip '.' and '..'
*node = new TocNode;
(*node)->sub = (*node)->next = NULL;
(*node)->nameLen = strlen(dirent.name);
memcpy((*node)->name, dirent.name, (*node)->nameLen + 1);
if (dirent.stat.mode & FIO_S_IFDIR) { // directory
(*node)->isDir = true;
char nextPath[256];
sprintf(nextPath, "%s%s/", path, dirent.name);
readDir(nextPath, &((*node)->sub), level + 1);
} else
(*node)->isDir = false;
node = &((*node)->next);
}
fio.dclose(fd);
} else
printf("Can't open path: %s\n", path);
}
}示例2:
bool Ps2ReadFile::open(const char *name) {
assert(_fd < 0);
_fd = fio.open(name, O_RDONLY);
if (_fd >= 0) {
_fileSize = fio.seek(_fd, 0, SEEK_END);
fio.seek(_fd, 0, SEEK_SET);
return true;
} else
return false;
}示例3:
void Ps2File::cacheReadAhead() {
if (_cacheOpRunning) {
// there's already some cache read running
if (fio.poll(_fd)) // did it finish?
cacheReadSync(); // yes.
}
if ((!_cacheOpRunning) && ((_readBytesBlock >= CACHE_READ_THRESHOLD) || _stream) && fio.fioAvail()) {
// the engine seems to do sequential reads and there are no other I/Os going on. read ahead.
uint32 cachePosEnd = _cachePos + _bytesInCache;
if (_cachePos > _filePos)
return; // there was a seek in the meantime, don't cache.
if (cachePosEnd - _filePos >= CACHE_FILL_MIN)
return; // cache is full enough.
if (cachePosEnd == _fileSize)
return; // can't read beyond EOF.
assert(cachePosEnd < _fileSize);
if (_cachePos + _bytesInCache <= _filePos) {
_cacheOfs = _bytesInCache = 0;
_cachePos = cachePosEnd = _filePos & ~READ_ALIGN_MASK;
assert(_filePos == _physFilePos);
} else {
uint32 cacheDiff = _filePos - _cachePos;
assert(_bytesInCache >= cacheDiff);
cacheDiff &= ~READ_ALIGN_MASK;
_bytesInCache -= cacheDiff;
_cachePos += cacheDiff;
_cacheOfs = (_cacheOfs + cacheDiff) % CACHE_SIZE;
}
if (_physFilePos != cachePosEnd) {
sioprintf("unexpected _physFilePos %d cache %d %d\n", _physFilePos, _cacheOfs, _bytesInCache);
// assert(!(cachePosEnd & READ_ALIGN_MASK)); // romeo
_physFilePos = fio.seek(_fd, cachePosEnd, SEEK_SET);
if (_physFilePos != cachePosEnd) {
sioprintf("cache seek error: seek to %d instead of %d, fs = %d\n", _physFilePos, cachePosEnd, _fileSize);
return;
}
}
uint32 cacheDest = (_cacheOfs + _bytesInCache) % CACHE_SIZE;
uint32 cacheRead = CACHE_SIZE - _bytesInCache;
if (cacheDest + cacheRead > CACHE_SIZE)
cacheRead = CACHE_SIZE - cacheDest;
if (cacheRead > MAX_READ_STEP)
cacheRead = MAX_READ_STEP;
assert((!(cacheRead & READ_ALIGN_MASK)) && cacheRead);
_cacheOpRunning = true;
fio.read(_fd, _cacheBuf + cacheDest, cacheRead);
}
}示例4: fclose
Ps2WriteFile::~Ps2WriteFile(void) {
if ((_fd >= 0) && (_bytesInCache)) {
fio.write(_fd, _cacheBuf, _bytesInCache);
int wrRes = fio.sync(_fd);
if (wrRes != (int)_bytesInCache) // too late to return an error
printf("Cache flush on fclose(): Unable to write %d cached bytes to mc, only %d bytes written\n", _bytesInCache, wrRes);
}
if (_fd >= 0)
fio.close(_fd);
free(_cacheBuf);
}示例5: dir
bool Ps2SaveFileManager::mcCheck(const char *path) {
// Common::FSNode dir(Common::String(path), 1); // FIXED in gcc 3.4.x
const Common::String str(path);
Common::FSNode dir(str);
// int res;
printf("mcCheck\n");
if (!dir.exists()) {
printf("! exist -> create : ");
#ifdef __USE_LIBMC__
printf("%s\n", path+4);
// WaitSema(_sema);
mcSync(0, NULL, NULL);
mcMkDir(0 /*port*/, 0 /*slot*/, path+4);
mcSync(0, NULL, &res);
printf("sync : %d\n", res);
// SignalSema(_sema);
#else
printf("%s\n", path);
fio.mkdir(path);
#endif
}
// TODO: res;
return true;
}示例6: savePath
bool Ps2SaveFileManager::removeSavefile(const Common::String &filename) {
Common::FSNode savePath(ConfMan.get("savepath")); // TODO: is this fast?
Common::FSNode file;
if (!savePath.exists() || !savePath.isDirectory())
return false;
if (_getDev(savePath) == MC_DEV) {
// if (strncmp(savePath.getPath().c_str(), "mc0:", 4) == 0) {
char path[32], temp[32];
strcpy(temp, filename.c_str());
// mcSplit(temp, game, ext);
char *game = strdup(strtok(temp, "."));
char *ext = strdup(strtok(NULL, "*"));
sprintf(path, "mc0:ScummVM/%s", game); // per game path
mcCheck(path);
sprintf(path, "mc0:ScummVM/%s/%s.sav", game, ext);
file = Common::FSNode(path);
free(game);
free(ext);
} else {
file = savePath.getChild(filename);
}
if (!file.exists() || file.isDirectory())
return false;
fio.remove(file.getPath().c_str());
return true;
}示例7: if
bool Ps2File::open(const char *name, int mode) {
#if 1
_fd = fio.open(name, mode);
dbg_printf("open %s [%d]\n", name, _fd);
if (_fd >= 0) {
_mode = mode;
_filePos = 0;
if (_mode == O_RDONLY) {
_fileSize = fio.seek(_fd, 0, SEEK_END);
fio.seek(_fd, 0, SEEK_SET);
}
else
_fileSize = 0;
dbg_printf(" _mode = %x\n", _mode);
dbg_printf(" _fileSize = %d\n", _fileSize);
// dbg_printf(" _filePos = %d\n", _filePos);
return true;
}
return false;
#else
uint32 r;
// hack: FIO does not reports size for RW (?)
_fd = fio.open(name, O_RDONLY);
if (_fd >= 0) {
_fileSize = fio.seek(_fd, 0, SEEK_END);
fio.seek(_fd, 0, SEEK_SET); /* rewind ! */
if (_fileSize && mode != O_RDONLY) {
fio.read(_fd, _cacheBuf, _fileSize);
r = fio.sync(_fd);
dbg_printf(" sz=%d, read=%d\n", _fileSize, r);
assert(r == _fileSize);
}
fio.close(_fd);
}
else
_fileSize = 0; /* new file */
_fd = fio.open(name, mode);
dbg_printf("open %s [%d]\n", name, _fd);
if (_fd >= 0) {
_mode = mode;
_filePos = 0;
if (_fileSize) { /* existing data */
if (mode == O_RDONLY) {
/* DANGER: for w* modes it will truncate your fine files */
fio.seek(_fd, 0, SEEK_SET);
}
else if (_mode & O_APPEND) {
fio.seek(_fd, 0, _fileSize);
_filePos = _fileSize;
}
#if 0 /* file already trunc'd when opened as w* -> moved up */
if (mode != O_RDONLY) {
fio.read(_fd, _cacheBuf, _fileSize);
r = fio.sync(_fd);
dbg_printf(" sz=%d, read=%d\n", _fileSize, r);
assert(r == _fileSize);
// _fileSize = fio.seek(_fd, 0, SEEK_END);
}
#endif
}
dbg_printf(" _mode = %x\n", _mode);
dbg_printf(" _fileSize = %d\n", _fileSize);
dbg_printf(" _filePos = %d\n", _filePos);
return true;
} else
return false;
#endif
}示例8:
bool Ps2FilesystemNode::getChildren(AbstractFSList &list, ListMode mode, bool hidden) const {
//TODO: honor the hidden flag
// dbg_printf("getChildren\n");
if (!_isDirectory)
return false;
if (_isRoot) {
if (g_systemPs2->cdPresent())
list.push_back(new Ps2FilesystemNode("cdfs:"));
if (g_systemPs2->hddPresent())
list.push_back(new Ps2FilesystemNode("pfs0:"));
if (g_systemPs2->usbMassPresent())
list.push_back(new Ps2FilesystemNode("mass:"));
if (g_systemPs2->netPresent())
list.push_back(new Ps2FilesystemNode("host:"));
if (g_systemPs2->mcPresent())
list.push_back(new Ps2FilesystemNode("mc0:"));
return true;
} else {
int fd;
if (_path == "pfs0:")
fd = fio.dopen("pfs0:/");
else
fd = fio.dopen(_path.c_str());
// dbg_printf("dopen = %d\n", fd);
if (fd >= 0) {
iox_dirent_t dirent;
Ps2FilesystemNode dirEntry;
int dreadRes;
while ((dreadRes = fio.dread(fd, &dirent)) > 0) {
if (dirent.name[0] == '.')
continue; // ignore '.' and '..'
if ( (mode == Common::FSNode::kListAll) ||
((mode == Common::FSNode::kListDirectoriesOnly) &&
(dirent.stat.mode & FIO_S_IFDIR)) ||
((mode == Common::FSNode::kListFilesOnly) &&
!(dirent.stat.mode & FIO_S_IFDIR)) ) {
dirEntry._isHere = true;
dirEntry._isDirectory = (bool)(dirent.stat.mode & FIO_S_IFDIR);
dirEntry._isRoot = false;
dirEntry._path = _path;
dirEntry._path += dirent.name;
if (dirEntry._isDirectory && dirEntry._path.lastChar() != '/')
dirEntry._path += '/';
dirEntry._displayName = dirent.name;
dirEntry._verified = true;
list.push_back(new Ps2FilesystemNode(&dirEntry));
}
}
fio.dclose(fd);
return true;
}
}
return false;
}示例9: return
bool Ps2WriteFile::open(const char *name) {
_fd = fio.open(name, O_WRONLY | O_CREAT | O_TRUNC);
return (_fd >= 0);
}