int read_some_events(struct thread_info *t) {
struct io_unit *event_io;
struct io_event *event;
int nr;
int i;
int min_nr = io_iter;
struct timeval stop_time;
if (t->num_global_pending < io_iter)
min_nr = t->num_global_pending;
#ifdef NEW_GETEVENTS
nr = io_getevents(t->io_ctx, min_nr, t->num_global_events, t->events,NULL);
#else
nr = io_getevents(t->io_ctx, t->num_global_events, t->events, NULL);
#endif
if (nr <= 0)
return nr;
gettimeofday(&stop_time, NULL);
for (i = 0 ; i < nr ; i++) {
event = t->events + i;
event_io = (struct io_unit *)((unsigned long)event->obj);
finish_io(t, event_io, event->res, &stop_time);
}
return nr;
}
int file_wait(int thread_id, long nreq)
{
long i;
long nr;
struct io_event *event;
sb_aio_oper_t *oper;
struct iocb *iocbp;
/* Try to read some events */
#ifdef HAVE_OLD_GETEVENTS
(void)nreq; /* unused */
nr = io_getevents(aio_ctxts[thread_id].io_ctxt, file_async_backlog,
aio_ctxts[thread_id].events, NULL);
#else
nr = io_getevents(aio_ctxts[thread_id].io_ctxt, nreq, file_async_backlog,
aio_ctxts[thread_id].events, NULL);
#endif
if (nr < 1)
{
log_errno(LOG_FATAL, "io_getevents() failed!");
return 1;
}
/* Verify results */
for (i = 0; i < nr; i++)
{
event = (struct io_event *)aio_ctxts[thread_id].events + i;
iocbp = (struct iocb *)(unsigned long)event->obj;
oper = (sb_aio_oper_t *)iocbp;
switch (oper->type) {
case FILE_OP_TYPE_FSYNC:
if (event->res != 0)
{
log_text(LOG_FATAL, "Asynchronous fsync failed!\n");
return 1;
}
break;
case FILE_OP_TYPE_READ:
if ((ssize_t)event->res != oper->len)
{
log_text(LOG_FATAL, "Asynchronous read failed!\n");
return 1;
}
break;
case FILE_OP_TYPE_WRITE:
if ((ssize_t)event->res != oper->len)
{
log_text(LOG_FATAL, "Asynchronous write failed!\n");
return 1;
}
break;
default:
break;
}
free(oper);
aio_ctxts[thread_id].nrequests--;
}
return 0;
}
void fun_read(void *ptr)
{
long n = MAX_AIO_EVENTS;
struct stat filestat;
long long exSize;
long i;
long r;
while (n > 0) {
r = io_getevents(ctxp, 1, MAX_AIO_EVENTS, ioevents, NULL);
if (r < 0)
fail("io_getevents returned %ld\n", r);
n -= r;
for (i = 0; i < r; ++i) {
if (ioevents[i].obj->u.c.nbytes != BUFSIZE)
fail("error in block: expacted %d bytes, "
"receiced %ld\n", BUFSIZE,
ioevents[i].obj->u.c.nbytes);
exSize = ioevents[i].obj->u.c.offset +
ioevents[i].obj->u.c.nbytes;
fstat(handle, &filestat);
if (filestat.st_size < exSize)
fail("write of %lu bytes @%llu finished, "
"expected filesize at least %llu, but "
"got %ld\n", ioevents[i].obj->u.c.nbytes,
ioevents[i].obj->u.c.offset, exSize,
filestat.st_size);
}
}
}
int
__mb_aiom_getevents(mb_aiom_t *aiom, long min_nr, long nr,
struct io_event *events, struct timespec *timeout){
int i;
int nr_completed;
aiom_cb_t *aiom_cb;
struct io_event *event;
nr_completed = io_getevents(aiom->context, min_nr, nr, events, timeout);
aiom->nr_inflight -= nr_completed;
aiom->iocount += nr_completed;
if (aio_tracefile != NULL) {
fprintf(aio_tracefile,
"[%d] %d infl %d comp\n",
tid, aiom->nr_inflight, nr_completed);
}
for(i = 0; i < nr_completed; i++){
event = &aiom->events[i];
aiom_cb = (aiom_cb_t *) event->obj;
// TODO: callback or something
if (!(event->res == option.blk_sz && event->res2 == 0)){
fprintf(stderr, "fatal error: res = %ld, res2 = %ld\n",
(long) event->res, (long) event->res2);
}
aiom->iowait += mb_elapsed_time_from(&aiom_cb->submit_time);
mb_res_pool_push(aiom->cbpool, aiom_cb);
}
return nr_completed;
}
static void qemu_laio_completion_cb(void *opaque)
{
struct qemu_laio_state *s = opaque;
while (1) {
struct io_event events[MAX_EVENTS];
uint64_t val;
ssize_t ret;
struct timespec ts = { 0 };
int nevents, i;
do {
ret = read(s->efd, &val, sizeof(val));
} while (ret == -1 && errno == EINTR);
if (ret == -1 && errno == EAGAIN)
break;
if (ret != 8)
break;
do {
nevents = io_getevents(s->ctx, val, MAX_EVENTS, events, &ts);
} while (nevents == -EINTR);
for (i = 0; i < nevents; i++) {
struct iocb *iocb = events[i].obj;
struct qemu_laiocb *laiocb =
container_of(iocb, struct qemu_laiocb, iocb);
laiocb->ret = io_event_ret(&events[i]);
qemu_laio_process_completion(s, laiocb);
}
}
}
void native_linux_aio_provider::get_event()
{
struct io_event events[1];
int ret;
const char* name = ::dsn::tools::get_service_node_name(node());
char buffer[128];
sprintf(buffer, "%s.aio", name);
task_worker::set_name(buffer);
while (true)
{
ret = io_getevents(_ctx, 1, 1, events, NULL);
if (ret > 0) // should be 1
{
dassert(ret == 1, "");
struct iocb *io = events[0].obj;
complete_aio(io, static_cast<int>(events[0].res), static_cast<int>(events[0].res2));
}
else
{
dwarn("io_getevents returns %d, you probably want to try on another machine:-(", ret);
}
}
}
void file_aio_loop(void)
{
struct io_event event[16];
struct timespec io_ts;
int res;
io_ts.tv_sec = 0;
io_ts.tv_nsec = 0;
res = io_getevents(*aio_queue, 1, 16, event, &io_ts);
printf("res = %d\r\n", res);
if(res > 0)
{
int i;
for(i = 0; i < res; i++)
{
io_callback_t callback = (io_callback_t)event[i].data;
struct iocb *iocb = event[i].obj;
callback(*aio_queue, iocb, event[i].res, event[i].res2);
}
}
else if(res < 0)
{
printf("file_aio_loop %s\n", strerror(errno));
}
}
int compat0_1_io_queue_wait(io_context_t ctx, struct timespec *when)
{
struct timespec timeout;
if (when)
timeout = *when;
return io_getevents(ctx, 0, 0, NULL, when ? &timeout : NULL);
}
int aio_read_random(char* file_name)
{
int ret = 0;
int fd = -1;
fd = ::open(file_name, O_RDONLY);
fprintf(stdout, "open %s, fd %d\n", file_name, fd);
int64_t file_length = ::lseek(fd, 0, SEEK_END);
int piece_num = (file_length + PIECE_LEN - 1)/ PIECE_LEN;
int bitfield_size = (piece_num + 8 - 1)/8;
u_int8_t* bitfield = (u_int8_t*)malloc(bitfield_size);
memset(bitfield, 0, bitfield_size);
fprintf(stdout, "file_length=%ld, piece_num=%d, bitfield_size=%d\n", file_length, piece_num, bitfield_size);
io_context_t myctx;
memset(&myctx, 0, sizeof(myctx));
io_queue_init(AIO_MAXIO, &myctx);
while(1)
{
// read piece by random
int piece_index = rand_index(piece_num);
int piece_pos = bitfield_find_unset(bitfield, piece_num, piece_index);
if(piece_pos == -1)
{
break;
}
//printf("read piece=%d\n", piece_pos);
struct iocb* io2 = (struct iocb*)malloc(sizeof(struct iocb));
memset(io2, 0, sizeof(struct iocb));
u_int8_t* buff = NULL;
posix_memalign((void **)&buff, getpagesize(), PIECE_LEN);
io_prep_pread(io2, fd, buff, PIECE_LEN, PIECE_LEN*piece_pos);
io2->data = (void*)piece_pos;
io_submit(myctx, 1, &io2);
struct io_event events[AIO_MAXIO];
int num = io_getevents(myctx, 0, AIO_MAXIO, events, NULL);
//printf("io_request completed %d\n", num);
for(int i=0;i<num;i++)
{
struct iocb *objp = events[i].obj;
int finish_piece_pos = (int)(long)objp->data;
//printf("done_piece=%d, res=%ld, res2=%ld\n", finish_piece_pos, events[i].res, events[i].res2);
//cb(myctx, io2, events[i].res, events[i].res2);
bitfield_set_one(bitfield, piece_num, finish_piece_pos);
free(objp->u.c.buf);
free(objp);
}
}
close(fd);
fd = -1;
return 0;
}
static void
blockdev_aio_poll(void *arg)
{
struct blockdev_aio_io_channel *ch = arg;
int nr, i;
enum spdk_bdev_io_status status;
struct blockdev_aio_task *aio_task;
struct timespec timeout;
timeout.tv_sec = 0;
timeout.tv_nsec = 0;
nr = io_getevents(ch->io_ctx, 1, ch->queue_depth,
ch->events, &timeout);
if (nr < 0) {
SPDK_ERRLOG("%s: io_getevents returned %d\n", __func__, nr);
return;
}
for (i = 0; i < nr; i++) {
aio_task = ch->events[i].data;
if (ch->events[i].res != aio_task->len) {
status = SPDK_BDEV_IO_STATUS_FAILED;
} else {
status = SPDK_BDEV_IO_STATUS_SUCCESS;
}
spdk_bdev_io_complete(spdk_bdev_io_from_ctx(aio_task), status);
}
}
/* The completion BH fetches completed I/O requests and invokes their
* callbacks.
*
* The function is somewhat tricky because it supports nested event loops, for
* example when a request callback invokes aio_poll(). In order to do this,
* the completion events array and index are kept in qemu_laio_state. The BH
* reschedules itself as long as there are completions pending so it will
* either be called again in a nested event loop or will be called after all
* events have been completed. When there are no events left to complete, the
* BH returns without rescheduling.
*/
static void qemu_laio_completion_bh(void *opaque)
{
struct qemu_laio_state *s = opaque;
/* Fetch more completion events when empty */
if (s->event_idx == s->event_max) {
do {
struct timespec ts = { 0 };
s->event_max = io_getevents(s->ctx, MAX_EVENTS, MAX_EVENTS,
s->events, &ts);
} while (s->event_max == -EINTR);
s->event_idx = 0;
if (s->event_max <= 0) {
s->event_max = 0;
return; /* no more events */
}
}
/* Reschedule so nested event loops see currently pending completions */
qemu_bh_schedule(s->completion_bh);
/* Process completion events */
while (s->event_idx < s->event_max) {
struct iocb *iocb = s->events[s->event_idx].obj;
struct qemu_laiocb *laiocb =
container_of(iocb, struct qemu_laiocb, iocb);
laiocb->ret = io_event_ret(&s->events[s->event_idx]);
s->event_idx++;
qemu_laio_process_completion(s, laiocb);
}
}
/* Static functions */
static void *aio_dequeue(void *arg)
{
struct io_event event;
int rtn;
int resp;
my_iocb *cbp;
while(1){
resp = io_getevents(context, 1, 1, &event, NULL);
//PRINT("io_getevent resp:%d\n", resp);
if(resp <= 0){
if(resp == 0){
continue;
}else if(resp == EINTR){
PRINT("EINTR recieved \n");
continue;
}
PRINT("Error I/O getevent file:%s, line:%d errno:%d\n", __func__, __LINE__, resp);
//exit(1);
}
else{
cbp = (my_iocb *)event.obj;
PRINT("\tFinished qid:%d\n", cbp->qid);
clear_id(cbp->qid);
pthread_mutex_lock(&aio_req_num_mutex);
req_num--;
pthread_mutex_unlock(&aio_req_num_mutex);
}
//TODO for test
//usleep(1000);
}
}
int
tap_aio_get_events(tap_aio_context_t *ctx)
{
int nr_events = 0;
if (!ctx->poll_in_thread)
nr_events = io_getevents(ctx->aio_ctx, 1,
ctx->max_aio_events, ctx->aio_events, NULL);
else {
int r;
r = read(ctx->completion_fd[0], &nr_events, sizeof(nr_events));
if (r < 0) {
if (errno == EAGAIN || errno == EINTR)
return 0;
/* This is pretty bad, we'll probably spin */
DPRINTF("Aargh, read completion_fd failed: %s",
strerror(errno));
} else if (r != sizeof(nr_events)) {
/* Should never happen because sizeof(nr_events)
* fits in the guaranteed atomic pipe write size.
* Blundering on is slightly nicer than asserting */
DPRINTF("Aargh, read completion_fd short read %d", r);
}
}
return nr_events;
}
Range<AsyncIO::Op**> AsyncIO::doWait(size_t minRequests, size_t maxRequests) {
io_event events[pending_];
int count;
do {
// Wait forever
count = io_getevents(ctx_, minRequests, maxRequests, events, nullptr);
} while (count == -EINTR);
checkKernelError(count, "AsyncIO: io_getevents failed");
DCHECK_GE(count, minRequests); // the man page says so
DCHECK_LE(count, pending_);
completed_.clear();
if (count == 0) {
return folly::Range<Op**>();
}
for (size_t i = 0; i < count; ++i) {
DCHECK(events[i].obj);
Op* op = boost::intrusive::get_parent_from_member(
events[i].obj, &AsyncIOOp::iocb_);
--pending_;
op->complete(events[i].res);
completed_.push_back(op);
}
return folly::Range<Op**>(&completed_.front(), count);
}
static errcode_t unix_vec_read_blocks(io_channel *channel,
struct io_vec_unit *ivus, int count)
{
int i;
int ret;
io_context_t io_ctx;
struct iocb *iocb = NULL, **iocbs = NULL;
struct io_event *events = NULL;
int64_t offset;
int submitted, completed = 0;
ret = OCFS2_ET_NO_MEMORY;
iocb = malloc((sizeof(struct iocb) * count));
iocbs = malloc((sizeof(struct iocb *) * count));
events = malloc((sizeof(struct io_event) * count));
if (!iocb || !iocbs || !events)
goto out;
memset(&io_ctx, 0, sizeof(io_ctx));
ret = io_queue_init(count, &io_ctx);
if (ret)
return ret;
for (i = 0; i < count; ++i) {
offset = ivus[i].ivu_blkno * channel->io_blksize;
io_prep_pread(&(iocb[i]), channel->io_fd, ivus[i].ivu_buf,
ivus[i].ivu_buflen, offset);
iocbs[i] = &iocb[i];
}
resubmit:
ret = io_submit(io_ctx, count - completed, &iocbs[completed]);
if (!ret && (count - completed))
ret = OCFS2_ET_SHORT_READ;
if (ret < 0)
goto out;
submitted = ret;
ret = io_getevents(io_ctx, submitted, submitted, events, NULL);
if (ret < 0)
goto out;
completed += submitted;
if (completed < count)
goto resubmit;
out:
if (ret >= 0)
ret = 0;
if (!ret)
channel->io_bytes_read += (count * channel->io_blksize);
free(iocb);
free(iocbs);
free(events);
io_queue_release(io_ctx);
return ret;
}
long test_write(aio_context_t ctx, int fd, long range, int afd) {
long i, n, r, j;
u_int64_t eval;
struct iocb **piocb;
struct iocb *iocb;
struct timespec tmo;
static struct io_event events[NUM_EVENTS];
static char buf[IORTX_SIZE];
for (i = 0; i < IORTX_SIZE; i++)
buf[i] = i & 0xff;
n = range / IORTX_SIZE;
iocb = malloc(n * sizeof(struct iocb));
piocb = malloc(n * sizeof(struct iocb *));
if (!iocb || !piocb) {
perror("iocb alloc");
return -1;
}
for (i = 0; i < n; i++) {
piocb[i] = &iocb[i];
asyio_prep_pwrite(&iocb[i], fd, buf, sizeof(buf),
(n - i - 1) * IORTX_SIZE, afd);
iocb[i].aio_data = (u_int64_t) i + 1;
}
fprintf(stdout, "submitting write request ...\n");
if (io_submit(ctx, n, piocb) <= 0) {
perror("io_submit");
return -1;
}
for (i = 0; i < n;) {
fprintf(stdout, "waiting ... ");
waitasync(afd, -1);
eval = 0;
if (read(afd, &eval, sizeof(eval)) != sizeof(eval))
perror("read");
fprintf(stdout, "done! %llu\n", (unsigned long long) eval);
while (eval > 0) {
tmo.tv_sec = 0;
tmo.tv_nsec = 0;
r = io_getevents(ctx, 1, eval > NUM_EVENTS ? NUM_EVENTS: (long) eval,
events, &tmo);
if (r > 0) {
for (j = 0; j < r; j++) {
}
i += r;
eval -= r;
fprintf(stdout, "test_write got %ld/%ld results so far\n",
i, n);
}
}
}
free(iocb);
free(piocb);
return n;
}
int compat0_1_io_getevents(io_context_t ctx_id, long nr,
struct io_event *events,
const struct timespec *const_timeout)
{
struct timespec timeout;
if (const_timeout)
timeout = *const_timeout;
return io_getevents(ctx_id, 1, nr, events,
const_timeout ? &timeout : NULL);
}
static void* aiobe_thread(void* p) {
struct device* dev = (struct device*)p;
struct io_event event;
while(1) {
int ret=io_getevents(D(dev)->ctx, 1, 1, &event, NULL);
if (ret!=1)
break;
aiobe_complete((struct aiobe_request*) event.data, event.res);
}
return NULL;
}
static int
sector_io(struct sbd_context *st, int sector, void *data, int rw)
{
struct timespec timeout;
struct io_event event;
struct iocb *ios[1] = { &st->io };
long r;
timeout.tv_sec = timeout_io;
timeout.tv_nsec = 0;
memset(&st->io, 0, sizeof(struct iocb));
if (rw) {
io_prep_pwrite(&st->io, st->devfd, data, sector_size, sector_size * sector);
} else {
io_prep_pread(&st->io, st->devfd, data, sector_size, sector_size * sector);
}
if (io_submit(st->ioctx, 1, ios) != 1) {
cl_log(LOG_ERR, "Failed to submit IO request! (rw=%d)", rw);
return -1;
}
errno = 0;
r = io_getevents(st->ioctx, 1L, 1L, &event, &timeout);
if (r < 0 ) {
cl_log(LOG_ERR, "Failed to retrieve IO events (rw=%d)", rw);
return -1;
} else if (r < 1L) {
cl_log(LOG_INFO, "Cancelling IO request due to timeout (rw=%d)", rw);
r = io_cancel(st->ioctx, ios[0], &event);
if (r) {
DBGLOG(LOG_INFO, "Could not cancel IO request (rw=%d)", rw);
/* Doesn't really matter, debugging information.
*/
}
return -1;
} else if (r > 1L) {
cl_log(LOG_ERR, "More than one IO was returned (r=%ld)", r);
return -1;
}
/* IO is happy */
if (event.res == sector_size) {
return 0;
} else {
cl_log(LOG_ERR, "Short IO (rw=%d, res=%lu, sector_size=%d)",
rw, event.res, sector_size);
return -1;
}
}
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;
}
JNIEXPORT void JNICALL Java_org_apache_activemq_artemis_jlibaio_LibaioContext_deleteContext(JNIEnv* env, jclass clazz, jobject contextPointer) {
int i;
struct io_control * theControl = getIOControl(env, contextPointer);
if (theControl == NULL) {
return;
}
struct iocb * iocb = getIOCB(theControl);
if (iocb == NULL) {
throwIOException(env, "Not enough space in libaio queue");
return;
}
// Submitting a dumb write so the loop finishes
io_prep_pwrite(iocb, dumbWriteHandler, 0, 0, 0);
iocb->data = (void *) -1;
if (!submit(env, theControl, iocb)) {
return;
}
// to make sure the poll has finished
pthread_mutex_lock(&(theControl->pollLock));
pthread_mutex_unlock(&(theControl->pollLock));
// To return any pending IOCBs
int result = io_getevents(theControl->ioContext, 0, 1, theControl->events, 0);
for (i = 0; i < result; i++) {
struct io_event * event = &(theControl->events[i]);
struct iocb * iocbp = event->obj;
putIOCB(theControl, iocbp);
}
io_queue_release(theControl->ioContext);
pthread_mutex_destroy(&(theControl->pollLock));
pthread_mutex_destroy(&(theControl->iocbLock));
// Releasing each individual iocb
for (i = 0; i < theControl->queueSize; i++) {
free(theControl->iocb[i]);
}
(*env)->DeleteGlobalRef(env, theControl->thisObject);
free(theControl->iocb);
free(theControl->events);
free(theControl);
}
int o2test_aio_query(struct o2test_aio *o2a, long min_nr, long nr)
{
int ret = 0;
struct io_event ev;
ret = io_getevents(o2a->o2a_ctx, min_nr, nr, &ev, NULL);
if (ret < min_nr) {
ret = errno;
fprintf(stderr, "error %s during %s\n", strerror(errno),
"io_getevents");
ret = -1;
}
return ret;
}
int FlatFileReader::FinishRead(void)
{
u32 bytes;
int min_nr = 1;
int max_nr = 1;
struct io_event events[max_nr];
int event = io_getevents(m_aio_context, min_nr, max_nr, events, NULL);
if (event < 1) {
return -1;
}
return 1;
}
static ssize_t aio_pwrite(int fd, void *buf, size_t nbytes, off_t offset)
{
aio_cb.aio_lio_opcode = IOCB_CMD_PWRITE;
aio_cb.aio_fildes = fd;
aio_cb.aio_buf = (unsigned long) buf;
aio_cb.aio_nbytes = nbytes;
aio_cb.aio_offset = offset;
if (io_submit(aio_ctx, 1, &aio_cbp) != 1)
err(1, "aio submit failed");
if (io_getevents(aio_ctx, 1, 1, &aio_ev, NULL) != 1)
err(1, "aio getevents failed");
if (aio_ev.res < 0) {
errno = -aio_ev.res;
return -1;
}
if (!cached && fdatasync(fd) < 0)
return -1;
return aio_ev.res;
#if 0
aio_cb.aio_lio_opcode = IOCB_CMD_FDSYNC;
if (io_submit(aio_ctx, 1, &aio_cbp) != 1)
err(1, "aio fdsync submit failed");
if (io_getevents(aio_ctx, 1, 1, &aio_ev, NULL) != 1)
err(1, "aio getevents failed");
if (aio_ev.res < 0)
return aio_ev.res;
#endif
}
static int swAioLinux_onFinish(swReactor *reactor, swEvent *event)
{
struct io_event events[SW_AIO_MAX_EVENTS];
swAio_event aio_ev;
uint64_t finished_aio;
struct iocb *aiocb;
struct timespec tms;
int i, n;
if (read(event->fd, &finished_aio, sizeof(finished_aio)) != sizeof(finished_aio))
{
swWarn("read() failed. Error: %s[%d]", strerror(errno), errno);
return SW_ERR;
}
while (finished_aio > 0)
{
tms.tv_sec = 0;
tms.tv_nsec = 0;
n = io_getevents(swoole_aio_context, 1, SW_AIO_MAX_EVENTS, events, &tms);
if (n > 0)
{
for (i = 0; i < n; i++)
{
aiocb = (struct iocb *) events[i].obj;
if ((int) events[i].res < 0)
{
aio_ev.error = abs((int) events[i].res);
aio_ev.ret = -1;
}
else
{
aio_ev.ret = (int) events[i].res;
}
aio_ev.fd = aiocb->aio_fildes;
aio_ev.type = aiocb->aio_lio_opcode == IOCB_CMD_PREAD ? SW_AIO_READ : SW_AIO_WRITE;
aio_ev.nbytes = aio_ev.ret;
aio_ev.offset = aiocb->aio_offset;
aio_ev.buf = (void *) aiocb->aio_buf;
aio_ev.task_id = aiocb->aio_reqprio;
SwooleAIO.callback(&aio_ev);
}
finished_aio -= n;
SwooleAIO.task_num -= n;
}
}
return SW_OK;
}
/* Called by each worker thread */
static void* worker_func(void* aio_context)
{
int num_events = -1, i = 0;
as_async_info_t *reference;
struct io_event events[MAXEVENTS];
while(g_running)
{
num_events = io_getevents(*(aio_context_t*)aio_context, 1, MAXEVENTS, (events + 0), NULL);
for(i = 0; i < num_events; i++)
{
reference = (as_async_info_t*)events[i].data;
process_read(reference);
}
}
return (0);
}
static PyObject *IOManager_getevents(IOManager *self, PyObject *args) {
long min_nr;
PyObject *timeout = NULL, *rv, *ptype, *pval, *ptb;
IORequest *req;
int rc, i;
double timeout_d = 0.0;
struct timespec tv, *tvp;
if (!PyArg_ParseTuple(args, "lO", &min_nr, &timeout)) return NULL;
if (min_nr > self->pending_events) {
PyErr_SetString(PyExc_ValueError, "min_nr too large: insufficient outstanding requests to fulfill.");
return NULL;
}
if (timeout == Py_None) tvp = NULL;
else {
tvp = &tv;
timeout_d = PyFloat_AsDouble(timeout);
if (PyErr_Occurred()) return NULL;
tv.tv_sec = (long) timeout_d;
tv.tv_nsec = ((timeout_d - (double)(long) timeout_d) * 1E9);
}
rc = io_getevents(self->ctx, min_nr, self->nr_events, self->events, tvp);
if (rc < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
self->pending_events -= rc;
if (!(rv = PyTuple_New(rc))) {
/* Talk about being painted into a corner.*/
PyErr_Fetch(&ptype, &pval, &ptb);
for (i = 0; i < rc; i++) Py_DECREF(self->events[i].data);
PyErr_Restore(ptype, pval, ptb);
return NULL;
}
for (i = 0; i < rc; i++) {
req = self->events[i].data;
req->res = self->events[i].res;
req->res2 = self->events[i].res2;
PyTuple_SET_ITEM(rv, i, (PyObject*) req);
}
return rv;
}
JNIEXPORT jint JNICALL Java_org_apache_activemq_artemis_jlibaio_LibaioContext_poll
(JNIEnv * env, jobject obj, jobject contextPointer, jobjectArray callbacks, jint min, jint max) {
int i = 0;
struct io_control * theControl = getIOControl(env, contextPointer);
if (theControl == NULL) {
return 0;
}
int result = io_getevents(theControl->ioContext, min, max, theControl->events, 0);
int retVal = result;
for (i = 0; i < result; i++) {
struct io_event * event = &(theControl->events[i]);
struct iocb * iocbp = event->obj;
int eventResult = (int)event->res;
#ifdef DEBUG
fprintf (stdout, "Poll res: %d totalRes=%d\n", eventResult, result);
#endif
if (eventResult < 0) {
#ifdef DEBUG
fprintf (stdout, "Error: %s\n", strerror(-eventResult));
#endif
if (iocbp->data != NULL && iocbp->data != (void *) -1) {
jstring jstrError = (*env)->NewStringUTF(env, strerror(-eventResult));
(*env)->CallVoidMethod(env, (jobject)(iocbp->data), errorMethod, (jint)(-eventResult), jstrError);
}
}
if (iocbp->data != NULL && iocbp->data != (void *) -1) {
(*env)->SetObjectArrayElement(env, callbacks, i, (jobject)iocbp->data);
// We delete the globalRef after the completion of the callback
(*env)->DeleteGlobalRef(env, (jobject)iocbp->data);
}
putIOCB(theControl, iocbp);
}
return retVal;
}
static void
aio_check_io(struct ns_worker_ctx *ns_ctx)
{
int count, i;
struct timespec timeout;
timeout.tv_sec = 0;
timeout.tv_nsec = 0;
count = io_getevents(ns_ctx->ctx, 1, g_queue_depth, ns_ctx->events, &timeout);
if (count < 0) {
fprintf(stderr, "io_getevents error\n");
exit(1);
}
for (i = 0; i < count; i++) {
task_complete(ns_ctx->events[i].data);
}
}
static void
aio_check_io(void)
{
int count, i;
struct timespec timeout;
timeout.tv_sec = 0;
timeout.tv_nsec = 0;
count = io_getevents(g_ns->u.aio.ctx, 1, 1, g_ns->u.aio.events, &timeout);
if (count < 0) {
fprintf(stderr, "io_getevents error\n");
exit(1);
}
for (i = 0; i < count; i++) {
g_ns->current_queue_depth--;
}
}