int main(int ac, char **av) {
int afd, fd;
aio_context_t ctx = 0;
char const *testfn = "/tmp/eventfd-aio-test.data";
fprintf(stdout, "creating an eventfd ...\n");
if ((afd = eventfd(0)) == -1) {
perror("eventfd");
return 2;
}
fprintf(stdout, "done! eventfd = %d\n", afd);
if (io_setup(TESTFILE_SIZE / IORTX_SIZE + 256, &ctx)) {
perror("io_setup");
return 3;
}
if ((fd = open(testfn, O_RDWR | O_CREAT, 0644)) == -1) {
perror(testfn);
return 4;
}
ftruncate(fd, TESTFILE_SIZE);
fcntl(afd, F_SETFL, fcntl(afd, F_GETFL, 0) | O_NONBLOCK);
test_write(ctx, fd, TESTFILE_SIZE, afd);
test_read(ctx, fd, TESTFILE_SIZE, afd);
io_destroy(ctx);
close(fd);
close(afd);
remove(testfn);
return 0;
}
int swAioLinux_init(int max_aio_events)
{
swoole_aio_context = 0;
if (io_setup(SW_AIO_MAX_EVENTS, &swoole_aio_context) < 0)
{
swWarn("io_setup() failed. Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
if (swPipeNotify_auto(&swoole_aio_pipe, 0, 0) < 0)
{
return SW_ERR;
}
swoole_aio_eventfd = swoole_aio_pipe.getFd(&swoole_aio_pipe, 0);
SwooleG.main_reactor->setHandle(SwooleG.main_reactor, SW_FD_AIO, swAioLinux_onFinish);
SwooleG.main_reactor->add(SwooleG.main_reactor, swoole_aio_eventfd, SW_FD_AIO);
SwooleAIO.callback = swAio_callback_test;
SwooleAIO.destroy = swAioLinux_destroy;
SwooleAIO.read = swAioLinux_read;
SwooleAIO.write = swAioLinux_write;
return SW_OK;
}
void setup_main_loop(void)
{
signal(SIGPIPE, SIG_IGN);
state.epoll_fd = epoll_create(1);
if (state.epoll_fd < 0) fail(1, "epoll_create");
rt_mutex_init(&state.sched_lock);
#if ENABLE_AIO
int ret;
static event_t aio_dummy_event;
state.aio_dummy_event = &aio_dummy_event;
ret = io_setup(MAX_AIO_EVENTS, &state.aio_ctx);
if (ret < 0) fail2(1, -ret, "io_setup");
state.aio_eventfd = eventfd(0, EFD_NONBLOCK);
if (state.aio_eventfd < 0) fail(1, "eventfd");
ret = epoll_ctler(EPOLL_CTL_ADD, state.aio_eventfd,
EPOLLIN, state.aio_dummy_event);
if (ret < 0) fail(1, "epoll_ctl eventfd");
#endif
}
int aio_create(void)
{
int n;
aio_fd = eventfd(0, 0);
if (-1 == aio_fd)
{
logerror("create eventaio_fd fail. %s", strerror(errno));
return aio_fd;
}
n = 1;
if (-1 == ioctl(aio_fd, FIONBIO, &n))
{
logerror("ioctl fail. %s", strerror(errno));
close(aio_fd);
return aio_fd;
}
if(-1 == io_setup(64, &aio_ctx))
{
logerror("io_setup fail. %s", strerror(errno));
close(aio_fd);
return aio_fd;
}
#if AIO_QUEUE
aio_queue = listCreate();
#endif
return aio_fd;
}
CAsyncIO::CAsyncIO()
{
//m_aioHandler.create();
m_aioHandler = NULL;
int z = io_setup(NUM_EVENTS, &m_aioHandler);
ON_ERROR_PRINT_LASTMSG_AND_DO(z, != , 0, throw "Fail to step aioContext");
}
//return eventfd
int AIORead(std::string path,void *buf,int epfd=-1)
{
m_filefd = openFile(path);
if (-1 == m_filefd) {
return -1;
}
m_ctx = 0;
if (io_setup(8192, &m_ctx)) {
perror("io_setup");
return -1;
}
if (posix_memalign(&buf, ALIGN_SIZE, RD_WR_SIZE)) {
perror("posix_memalign");
return 5;
}
printf("buf: %p\n", buf);
for (i = 0, iocbp = iocbs; i < NUM_EVENTS; ++i, ++iocbp) {
iocbps[i] = &iocbp->iocb;
io_prep_pread(&iocbp->iocb, fd, buf, RD_WR_SIZE, i * RD_WR_SIZE);
io_set_eventfd(&iocbp->iocb, efd);
io_set_callback(&iocbp->iocb, aio_callback);
iocbp->nth_request = i + 1;
}
if (io_submit(ctx, NUM_EVENTS, iocbps) != NUM_EVENTS) {
perror("io_submit");
return 6;
}
}
static int
init_ns_worker_ctx(void)
{
if (g_ns->type == ENTRY_TYPE_AIO_FILE) {
#ifdef HAVE_LIBAIO
g_ns->u.aio.events = calloc(1, sizeof(struct io_event));
if (!g_ns->u.aio.events) {
return -1;
}
g_ns->u.aio.ctx = 0;
if (io_setup(1, &g_ns->u.aio.ctx) < 0) {
free(g_ns->u.aio.events);
perror("io_setup");
return -1;
}
#endif
} else {
/*
* TODO: If a controller has multiple namespaces, they could all use the same queue.
* For now, give each namespace/thread combination its own queue.
*/
g_ns->u.nvme.qpair = spdk_nvme_ctrlr_alloc_io_qpair(g_ns->u.nvme.ctrlr, 0);
if (!g_ns->u.nvme.qpair) {
printf("ERROR: spdk_nvme_ctrlr_alloc_io_qpair failed\n");
return -1;
}
}
return 0;
}
int main(){
int i;
pthread_t reaperThread;
/* memory alignment is very essential for memory writes*/
posix_memalign((void**)&buffer,BUFFERSIZE,BUFFERSIZE);
filedes=open(PATH,O_RDONLY|O_DIRECT,0644); /* Open the file for reading */
if(filedes<0){
printf("Error Opening File\n");
return 0;
}
io_setup(MAXEVENTS,&context); /* Initialize context */
/* Create a separate thread to process results */
pthread_create(&reaperThread,NULL,Reap,(void *)&i);
for(i=0;i<100;i++){
SubmitRead(i); /* Submit Requests for Reading */
}
pthread_join(reaperThread,NULL); /* Wait till reaperThread Exits */
/* Deallocate file descriptor and the context */
close(filedes);
io_destroy(context);
return 0;
}
static int
__lio_setup_aio_poll(struct tqueue *queue, int qlen)
{
struct lio *lio = queue->tio_data;
int err, fd;
lio->aio_ctx = REQUEST_ASYNC_FD;
fd = io_setup(qlen, &lio->aio_ctx);
if (fd < 0) {
lio->aio_ctx = 0;
err = -errno;
if (err == -EINVAL)
goto fail_fd;
goto fail;
}
lio->event_fd = fd;
return 0;
fail_fd:
DPRINTF("Couldn't get fd for AIO poll support. This is probably "
"because your kernel does not have the aio-poll patch "
"applied.\n");
fail:
return err;
}
int
tap_aio_setup(tap_aio_context_t *ctx,
struct io_event *aio_events,
int max_aio_events)
{
int ret;
ctx->aio_events = aio_events;
ctx->max_aio_events = max_aio_events;
ctx->poll_in_thread = 0;
ctx->aio_ctx = (io_context_t) REQUEST_ASYNC_FD;
ret = io_setup(ctx->max_aio_events, &ctx->aio_ctx);
if (ret < 0 && ret != -EINVAL)
return ret;
else if (ret > 0) {
ctx->pollfd = ret;
return ctx->pollfd;
}
ctx->aio_ctx = (io_context_t) 0;
ret = io_setup(ctx->max_aio_events, &ctx->aio_ctx);
if (ret < 0)
return ret;
if ((ret = pipe(ctx->command_fd)) < 0) {
DPRINTF("Unable to create command pipe\n");
return -1;
}
if ((ret = pipe(ctx->completion_fd)) < 0) {
DPRINTF("Unable to create completion pipe\n");
return -1;
}
if ((ret = pthread_create(&ctx->aio_thread, NULL,
tap_aio_completion_thread, ctx)) != 0) {
DPRINTF("Unable to create completion thread\n");
return -1;
}
ctx->pollfd = ctx->completion_fd[0];
ctx->poll_in_thread = 1;
tap_aio_continue(ctx);
return 0;
}
native_linux_aio_provider::native_linux_aio_provider(disk_engine* disk, aio_provider* inner_provider)
: aio_provider(disk, inner_provider)
{
memset(&_ctx, 0, sizeof(_ctx));
auto ret = io_setup(128, &_ctx); // 128 concurrent events
dassert(ret == 0, "io_setup error, ret = %d", ret);
}
int libcheck_init (struct checker * c)
{
unsigned long pgsize = getpagesize();
struct directio_context * ct;
long flags;
ct = malloc(sizeof(struct directio_context));
if (!ct)
return 1;
memset(ct, 0, sizeof(struct directio_context));
if (io_setup(1, &ct->ioctx) != 0) {
condlog(1, "io_setup failed");
free(ct);
return 1;
}
if (ioctl(c->fd, BLKBSZGET, &ct->blksize) < 0) {
MSG(c, "cannot get blocksize, set default");
ct->blksize = 512;
}
if (ct->blksize > 4096) {
/*
* Sanity check for DASD; BSZGET is broken
*/
ct->blksize = 4096;
}
if (!ct->blksize)
goto out;
ct->buf = (unsigned char *)malloc(ct->blksize + pgsize);
if (!ct->buf)
goto out;
flags = fcntl(c->fd, F_GETFL);
if (flags < 0)
goto out;
if (!(flags & O_DIRECT)) {
flags |= O_DIRECT;
if (fcntl(c->fd, F_SETFL, flags) < 0)
goto out;
ct->reset_flags = 1;
}
ct->ptr = (unsigned char *) (((unsigned long)ct->buf + pgsize - 1) &
(~(pgsize - 1)));
/* Sucessfully initialized, return the context. */
c->context = (void *) ct;
return 0;
out:
if (ct->buf)
free(ct->buf);
io_destroy(ct->ioctx);
free(ct);
return 1;
}
int main(void) {
io_setup();
interrupt_setup();
const int msecsDelayPost = 300;
while (1) {
_delay_ms (msecsDelayPost);
overrun++;
}
return 0;
}
void trace_queue(struct io *q_iop)
{
if (q_iop->t.bytes == 0)
return;
if (io_setup(q_iop, IOP_Q))
handle_queue(q_iop);
else
io_release(q_iop);
}
static void aio_setup(void)
{
memset(&aio_ctx, 0, sizeof aio_ctx);
memset(&aio_cb, 0, sizeof aio_cb);
if (io_setup(1, &aio_ctx))
err(2, "aio setup failed");
make_request = write_test ? aio_pwrite : aio_pread;
}
/*******************************************************************************
* Function which will perform any remaining platform-specific setup that can
* occur after the MMU and data cache have been enabled.
******************************************************************************/
void bl1_platform_setup(void)
{
init_nic400();
init_pcie();
/* Initialise the IO layer and register platform IO devices */
io_setup();
/* Enable and initialize the System level generic timer */
mmio_write_32(SYS_CNTCTL_BASE + CNTCR_OFF, CNTCR_FCREQ(0) | CNTCR_EN);
}
int main(int argc, char **argv)
{
pthread_t thread_read;
pthread_t thread_write;
int i;
int ret;
if (argc != 2)
fail("only arg should be file name\n");
for (i = 0; i < BUFSIZE; ++i)
buf[i] = 'A' + (char)(i % ('Z'-'A'+1));
buf[BUFSIZE-1] = '\n';
handle = open(argv[1], O_CREAT | O_TRUNC | O_DIRECT | O_RDWR, 0600);
if (handle == -1)
fail("failed to open test file %s, errno: %d\n",
argv[1], errno);
memset(&ctxp, 0, sizeof(ctxp));
ret = io_setup(MAX_AIO_EVENTS, &ctxp);
if (ret)
fail("io_setup returned %d\n", ret);
for (i = 0; i < MAX_AIO_EVENTS; ++i) {
iocbs[i] = calloc(1, sizeof(struct iocb));
if (iocbs[i] == NULL)
fail("failed to allocate an iocb\n");
/* iocbs[i]->data = i; */
iocbs[i]->aio_fildes = handle;
iocbs[i]->aio_lio_opcode = IO_CMD_PWRITE;
iocbs[i]->aio_reqprio = 0;
iocbs[i]->u.c.buf = buf;
iocbs[i]->u.c.nbytes = BUFSIZE;
iocbs[i]->u.c.offset = BUFSIZE*i;
}
pthread_create(&thread_read, NULL, (void*)&fun_read, NULL);
pthread_create(&thread_write, NULL, (void*)&fun_writeN, NULL);
pthread_join(thread_read, NULL);
pthread_join(thread_write, NULL);
io_destroy(ctxp);
close(handle);
printf("%u iterations of racing extensions and collection passed\n",
MAX_AIO_EVENTS);
return 0;
}
bool FlatFileReader::Open(const wxString& fileName)
{
m_filename = fileName;
int err = io_setup(64, &m_aio_context);
if (err) return false;
m_fd = wxOpen(fileName, O_RDONLY, 0);
return (m_fd != -1);
}
int leda_aio_init(aio_context_t ** ctx_p) {
if ((afd = aio_eventfd(0)) == -1) {
return -1;
}
if (io_setup(MAX_AIO_EVENTS, &ctx)) {
return -1;
}
fcntl(afd, F_SETFL, fcntl(afd, F_GETFL, 0) | O_NONBLOCK);
*ctx_p=&ctx;
return afd;
}
/*******************************************************************************
* Function which will evaluate how much of the trusted ram has been gobbled
* up by BL1 and return the base and size of whats available for loading BL2.
* Its called after coherency and the MMU have been turned on.
******************************************************************************/
void bl1_platform_setup(void)
{
/* Initialise the IO layer and register platform IO devices */
io_setup();
/* Enable and initialize the System level generic timer */
mmio_write_32(SYS_CNTCTL_BASE + CNTCR_OFF, CNTCR_EN);
/* Initialize the console */
console_init();
return;
}
int main(int argc, char* argv[])
{
if (argc < 2)
return 1;
int ctx_id;
io_context_t ctx;
if ((ctx_id = io_setup (20, &ctx)) < 0) {
perror ("io_setup");
return 1;
}
return 0;
}
void random_io(int fd, off_t ionum, int access_size, int num_requests)
{
// (1) io_context_tの初期化
io_context_t ctx;
memset(&ctx, 0, sizeof(io_context_t));
int r = io_setup(num_requests, &ctx);
assert(r == 0);
// (2) iocbs(I/O要求)の構築
struct iocb **iocbs = new struct iocb*[num_requests];
char **bufs = new char*[num_requests];
for (int i = 0; i < num_requests; i++) {
iocbs[i] = new struct iocb();
posix_memalign((void **)&bufs[i], 512, access_size);
off_t block_number = rand() % ionum;
io_prep_pread(iocbs[i], fd, bufs[i], access_size, block_number * access_size);
io_set_callback(iocbs[i], read_done);
}
// (3) I/O要求を投げる
r = io_submit(ctx, num_requests, iocbs);
assert(r == num_requests);
// (4) 完了したI/O要求を待ち、終わったものについてはcallbackを呼び出す
int cnt = 0;
while (true) {
struct io_event events[32];
int n = io_getevents(ctx, 1, 32, events, NULL);
if (n > 0)
cnt += n;
for (int i = 0; i < n; i++) {
struct io_event *ev = events + i;
io_callback_t callback = (io_callback_t)ev->data;
struct iocb *iocb = ev->obj;
callback(ctx, iocb, ev->res, ev->res2);
}
if (n == 0 || cnt == num_requests)
break;
}
for (int i = 0; i < num_requests; i++) {
delete iocbs[i];
free(bufs[i]);
}
delete[] iocbs;
delete[] bufs;
}
/*
* Test whether counter overflow is detected and handled correctly.
*
* It is not possible to directly overflow the counter using the
* write() syscall. Overflows occur when the counter is incremented
* from kernel space, in an irq context, when it is not possible to
* block the calling thread of execution.
*
* The AIO subsystem internally uses eventfd mechanism for
* notification of completion of read or write requests. In this test
* we trigger a counter overflow, by setting the counter value to the
* max possible value initially. When the AIO subsystem notifies
* through the eventfd counter, the counter overflows.
*
* NOTE: If the the counter starts from an initial value of 0, it will
* take decades for an overflow to occur. But since we set the initial
* value to the max possible counter value, we are able to cause it to
* overflow with a single increment.
*
* When the counter overflows, the following are tested
* 1. Check whether POLLERR event occurs in poll() for the eventfd.
* 2. Check whether readfd_set/writefd_set is set in select() for the
eventfd.
* 3. The counter value is UINT64_MAX.
*/
static int trigger_eventfd_overflow(int evfd, int *fd, io_context_t * ctx)
{
int ret;
struct iocb iocb;
struct iocb *iocbap[1];
static char buf[4 * 1024];
*ctx = 0;
ret = io_setup(16, ctx);
if (ret < 0) {
errno = -ret;
tst_resm(TINFO | TERRNO, "io_setup error");
return -1;
}
*fd = open("testfile", O_RDWR | O_CREAT, 0644);
if (*fd == -1) {
tst_resm(TINFO | TERRNO, "open(testfile) failed");
goto err_io_destroy;
}
ret = set_counter(evfd, UINT64_MAX - 1);
if (ret == -1) {
tst_resm(TINFO, "error setting counter to UINT64_MAX-1");
goto err_close_file;
}
io_prep_pwrite(&iocb, *fd, buf, sizeof(buf), 0);
io_set_eventfd(&iocb, evfd);
iocbap[0] = &iocb;
ret = io_submit(*ctx, 1, iocbap);
if (ret < 0) {
errno = -ret;
tst_resm(TINFO | TERRNO, "error submitting iocb");
goto err_close_file;
}
return 0;
err_close_file:
close(*fd);
err_io_destroy:
io_destroy(*ctx);
return -1;
}
static void trace_message(struct io *iop)
{
char scratch[15];
char msg[iop->t.pdu_len + 1];
if (!io_setup(iop, IOP_M))
return;
memcpy(msg, iop->pdu, iop->t.pdu_len);
msg[iop->t.pdu_len] = '\0';
fprintf(msgs_ofp, "%s %5d.%09lu %s\n",
make_dev_hdr(scratch, 15, iop->dip, 1),
(int)SECONDS(iop->t.time),
(unsigned long)NANO_SECONDS(iop->t.time), msg);
}
static int
associate_workers_with_ns(void)
{
struct ns_entry *entry = g_namespaces;
struct worker_thread *worker = g_workers;
struct ns_worker_ctx *ns_ctx;
int i, count;
count = g_num_namespaces > g_num_workers ? g_num_namespaces : g_num_workers;
for (i = 0; i < count; i++) {
ns_ctx = malloc(sizeof(struct ns_worker_ctx));
if (!ns_ctx) {
return -1;
}
memset(ns_ctx, 0, sizeof(*ns_ctx));
#ifdef HAVE_LIBAIO
ns_ctx->events = calloc(g_queue_depth, sizeof(struct io_event));
if (!ns_ctx->events) {
return -1;
}
ns_ctx->ctx = 0;
if (io_setup(g_queue_depth, &ns_ctx->ctx) < 0) {
perror("io_setup");
return -1;
}
#endif
printf("Associating %s with lcore %d\n", entry->name, worker->lcore);
ns_ctx->entry = entry;
ns_ctx->next = worker->ns_ctx;
worker->ns_ctx = ns_ctx;
worker = worker->next;
if (worker == NULL) {
worker = g_workers;
}
entry = entry->next;
if (entry == NULL) {
entry = g_namespaces;
}
}
return 0;
}
static PyObject *IOManager_new(PyTypeObject *type, PyObject *args, PyObject *kwargs) {
static char *kwlist[] = {"nr_events", NULL};
unsigned nr_events;
IOManager *rv;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "I", kwlist,
&nr_events)) return NULL;
if (!(rv = (IOManager*)type->tp_alloc(type, 0))) return NULL;
if ((rv->fd = eventfd(0,0)) < 0) {
PyErr_SetFromErrno(PyExc_OSError);
Py_DECREF(rv);
return NULL;
}
if (fcntl(rv->fd, F_SETFL, O_NONBLOCK)) {
PyErr_SetFromErrno(PyExc_OSError);
Py_DECREF(rv);
return NULL;
};
memset(&rv->ctx, 0, sizeof(io_context_t));
if (io_setup(nr_events, &rv->ctx)) {
PyErr_SetFromErrno(PyExc_OSError);
close(rv->fd);
Py_DECREF(rv);
return NULL;
};
if (!(rv->events = PyMem_Malloc(sizeof(struct io_event)*nr_events))) {
close(rv->fd);
io_destroy(rv->ctx);
Py_DECREF(rv);
return NULL;
}
if (!(rv->cbs = PyMem_Malloc(sizeof(struct iocb*)*nr_events))) {
close(rv->fd);
PyMem_Free(rv->events);
io_destroy(rv->ctx);
Py_DECREF(rv);
return NULL;
}
rv->nr_events = nr_events;
rv->pending_events = 0;
return (void*)rv;
}
/*******************************************************************************
* Perform platform specific setup. For now just initialize the memory location
* to use for passing arguments to BL31.
******************************************************************************/
void bl2_platform_setup()
{
/*
* Do initial security configuration to allow DRAM/device access. On
* Base FVP only DRAM security is programmable (via TrustZone), but
* other platforms might have more programmable security devices
* present.
*/
plat_security_setup();
/* Initialise the IO layer and register platform IO devices */
io_setup();
/*
* Ensure that the secure DRAM memory used for passing BL31 arguments
* does not overlap with the BL32_BASE.
*/
assert (BL32_BASE > TZDRAM_BASE + sizeof(bl31_args_t));
/* Use the Trusted DRAM for passing args to BL31 */
bl2_to_bl31_args = (bl31_args_t *) TZDRAM_BASE;
/* Populate the extents of memory available for loading BL33 */
bl2_to_bl31_args->bl33_meminfo.total_base = DRAM_BASE;
bl2_to_bl31_args->bl33_meminfo.total_size = DRAM_SIZE;
bl2_to_bl31_args->bl33_meminfo.free_base = DRAM_BASE;
bl2_to_bl31_args->bl33_meminfo.free_size = DRAM_SIZE;
bl2_to_bl31_args->bl33_meminfo.attr = 0;
bl2_to_bl31_args->bl33_meminfo.next = 0;
/*
* Populate the extents of memory available for loading BL32.
* TODO: We are temporarily executing BL2 from TZDRAM; will eventually
* move to Trusted SRAM
*/
bl2_to_bl31_args->bl32_meminfo.total_base = BL32_BASE;
bl2_to_bl31_args->bl32_meminfo.free_base = BL32_BASE;
bl2_to_bl31_args->bl32_meminfo.total_size =
(TZDRAM_BASE + TZDRAM_SIZE) - BL32_BASE;
bl2_to_bl31_args->bl32_meminfo.free_size =
(TZDRAM_BASE + TZDRAM_SIZE) - BL32_BASE;
bl2_to_bl31_args->bl32_meminfo.attr = BOT_LOAD;
bl2_to_bl31_args->bl32_meminfo.next = 0;
}
int aio_initialize(unsigned int max_queue_depth)
{
int rtn;
max_depth = max_queue_depth;
int i;
rtn = io_setup(125, &context);
if(rtn<0){
PRINT("Error on setup I/O, file:%s, line:%d, errno=%d\n", __func__, __LINE__, rtn);
exit(1);
}
rtn = pthread_create(&thr, NULL, &aio_dequeue, &context);
if(rtn<0){
PRINT("Error on thread creation, line:%d, errno:%d\n", __LINE__, rtn);
exit(1);
}
}
static int
blockdev_aio_initialize_io_channel(struct blockdev_aio_io_channel *ch)
{
ch->queue_depth = 128;
if (io_setup(ch->queue_depth, &ch->io_ctx) < 0) {
SPDK_ERRLOG("async I/O context setup failure\n");
return -1;
}
ch->events = calloc(sizeof(struct io_event), ch->queue_depth);
if (!ch->events) {
io_destroy(ch->io_ctx);
return -1;
}
return 0;
}
static int afalg_init_aio(afalg_aio *aio)
{
int r = -1;
/* Initialise for AIO */
aio->aio_ctx = 0;
r = io_setup(MAX_INFLIGHTS, &aio->aio_ctx);
if (r < 0) {
ALG_PERR("%s: io_setup error : ", __func__);
AFALGerr(AFALG_F_AFALG_INIT_AIO, AFALG_R_IO_SETUP_FAILED);
return 0;
}
memset(aio->cbt, 0, sizeof(aio->cbt));
aio->efd = -1;
aio->mode = MODE_UNINIT;
return 1;
}