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168 | use common::sense; |
168 | use common::sense; |
169 | |
169 | |
170 | use base 'Exporter'; |
170 | use base 'Exporter'; |
171 | |
171 | |
172 | BEGIN { |
172 | BEGIN { |
173 | our $VERSION = '3.72'; |
173 | our $VERSION = '3.8'; |
174 | |
174 | |
175 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
175 | our @AIO_REQ = qw(aio_sendfile aio_read aio_write aio_open aio_close |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
176 | aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx |
177 | aio_scandir aio_symlink aio_readlink aio_sync aio_fsync |
177 | aio_scandir aio_symlink aio_readlink aio_sync aio_fsync |
178 | aio_fdatasync aio_sync_file_range aio_pathsync aio_readahead |
178 | aio_fdatasync aio_sync_file_range aio_pathsync aio_readahead |
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… | |
182 | aio_msync aio_mtouch aio_mlock aio_mlockall |
182 | aio_msync aio_mtouch aio_mlock aio_mlockall |
183 | aio_statvfs); |
183 | aio_statvfs); |
184 | |
184 | |
185 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
185 | our @EXPORT = (@AIO_REQ, qw(aioreq_pri aioreq_nice)); |
186 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
186 | our @EXPORT_OK = qw(poll_fileno poll_cb poll_wait flush |
187 | min_parallel max_parallel max_idle |
187 | min_parallel max_parallel max_idle idle_timeout |
188 | nreqs nready npending nthreads |
188 | nreqs nready npending nthreads |
189 | max_poll_time max_poll_reqs |
189 | max_poll_time max_poll_reqs |
190 | sendfile fadvise madvise |
190 | sendfile fadvise madvise |
191 | mmap munmap munlock munlockall); |
191 | mmap munmap munlock munlockall); |
192 | |
192 | |
… | |
… | |
258 | IO::AIO::max_poll_reqs $nreqs |
258 | IO::AIO::max_poll_reqs $nreqs |
259 | IO::AIO::max_poll_time $seconds |
259 | IO::AIO::max_poll_time $seconds |
260 | IO::AIO::min_parallel $nthreads |
260 | IO::AIO::min_parallel $nthreads |
261 | IO::AIO::max_parallel $nthreads |
261 | IO::AIO::max_parallel $nthreads |
262 | IO::AIO::max_idle $nthreads |
262 | IO::AIO::max_idle $nthreads |
|
|
263 | IO::AIO::idle_timeout $seconds |
263 | IO::AIO::max_outstanding $maxreqs |
264 | IO::AIO::max_outstanding $maxreqs |
264 | IO::AIO::nreqs |
265 | IO::AIO::nreqs |
265 | IO::AIO::nready |
266 | IO::AIO::nready |
266 | IO::AIO::npending |
267 | IO::AIO::npending |
267 | |
268 | |
… | |
… | |
667 | |
668 | |
668 | =over 4 |
669 | =over 4 |
669 | |
670 | |
670 | =item IO::AIO::READDIR_DENTS |
671 | =item IO::AIO::READDIR_DENTS |
671 | |
672 | |
672 | When this flag is off, then the callback gets an arrayref with of names |
673 | When this flag is off, then the callback gets an arrayref consisting of |
673 | only (as with C<aio_readdir>), otherwise it gets an arrayref with |
674 | names only (as with C<aio_readdir>), otherwise it gets an arrayref with |
674 | C<[$name, $type, $inode]> arrayrefs, each describing a single directory |
675 | C<[$name, $type, $inode]> arrayrefs, each describing a single directory |
675 | entry in more detail. |
676 | entry in more detail. |
676 | |
677 | |
677 | C<$name> is the name of the entry. |
678 | C<$name> is the name of the entry. |
678 | |
679 | |
… | |
… | |
691 | systems that do not deliver the inode information. |
692 | systems that do not deliver the inode information. |
692 | |
693 | |
693 | =item IO::AIO::READDIR_DIRS_FIRST |
694 | =item IO::AIO::READDIR_DIRS_FIRST |
694 | |
695 | |
695 | When this flag is set, then the names will be returned in an order where |
696 | When this flag is set, then the names will be returned in an order where |
696 | likely directories come first. This is useful when you need to quickly |
697 | likely directories come first, in optimal stat order. This is useful when |
697 | find directories, or you want to find all directories while avoiding to |
698 | you need to quickly find directories, or you want to find all directories |
698 | stat() each entry. |
699 | while avoiding to stat() each entry. |
699 | |
700 | |
700 | If the system returns type information in readdir, then this is used |
701 | If the system returns type information in readdir, then this is used |
701 | to find directories directly. Otherwise, likely directories are files |
702 | to find directories directly. Otherwise, likely directories are names |
702 | beginning with ".", or otherwise files with no dots, of which files with |
703 | beginning with ".", or otherwise names with no dots, of which names with |
703 | short names are tried first. |
704 | short names are tried first. |
704 | |
705 | |
705 | =item IO::AIO::READDIR_STAT_ORDER |
706 | =item IO::AIO::READDIR_STAT_ORDER |
706 | |
707 | |
707 | When this flag is set, then the names will be returned in an order |
708 | When this flag is set, then the names will be returned in an order |
… | |
… | |
1405 | |
1406 | |
1406 | See C<poll_cb> for an example. |
1407 | See C<poll_cb> for an example. |
1407 | |
1408 | |
1408 | =item IO::AIO::poll_cb |
1409 | =item IO::AIO::poll_cb |
1409 | |
1410 | |
1410 | Process some outstanding events on the result pipe. You have to call this |
1411 | Process some outstanding events on the result pipe. You have to call |
1411 | regularly. Returns C<0> if all events could be processed, or C<-1> if it |
1412 | this regularly. Returns C<0> if all events could be processed (or there |
1412 | returned earlier for whatever reason. Returns immediately when no events |
1413 | were no events to process), or C<-1> if it returned earlier for whatever |
1413 | are outstanding. The amount of events processed depends on the settings of |
1414 | reason. Returns immediately when no events are outstanding. The amount of |
1414 | C<IO::AIO::max_poll_req> and C<IO::AIO::max_poll_time>. |
1415 | events processed depends on the settings of C<IO::AIO::max_poll_req> and |
|
|
1416 | C<IO::AIO::max_poll_time>. |
1415 | |
1417 | |
1416 | If not all requests were processed for whatever reason, the filehandle |
1418 | If not all requests were processed for whatever reason, the filehandle |
1417 | will still be ready when C<poll_cb> returns, so normally you don't have to |
1419 | will still be ready when C<poll_cb> returns, so normally you don't have to |
1418 | do anything special to have it called later. |
1420 | do anything special to have it called later. |
|
|
1421 | |
|
|
1422 | Apart from calling C<IO::AIO::poll_cb> when the event filehandle becomes |
|
|
1423 | ready, it can be beneficial to call this function from loops which submit |
|
|
1424 | a lot of requests, to make sure the results get processed when they become |
|
|
1425 | available and not just when the loop is finished and the event loop takes |
|
|
1426 | over again. This function returns very fast when there are no outstanding |
|
|
1427 | requests. |
1419 | |
1428 | |
1420 | Example: Install an Event watcher that automatically calls |
1429 | Example: Install an Event watcher that automatically calls |
1421 | IO::AIO::poll_cb with high priority (more examples can be found in the |
1430 | IO::AIO::poll_cb with high priority (more examples can be found in the |
1422 | SYNOPSIS section, at the top of this document): |
1431 | SYNOPSIS section, at the top of this document): |
1423 | |
1432 | |
… | |
… | |
1525 | |
1534 | |
1526 | Under normal circumstances you don't need to call this function. |
1535 | Under normal circumstances you don't need to call this function. |
1527 | |
1536 | |
1528 | =item IO::AIO::max_idle $nthreads |
1537 | =item IO::AIO::max_idle $nthreads |
1529 | |
1538 | |
1530 | Limit the number of threads (default: 4) that are allowed to idle (i.e., |
1539 | Limit the number of threads (default: 4) that are allowed to idle |
1531 | threads that did not get a request to process within 10 seconds). That |
1540 | (i.e., threads that did not get a request to process within the idle |
1532 | means if a thread becomes idle while C<$nthreads> other threads are also |
1541 | timeout (default: 10 seconds). That means if a thread becomes idle while |
1533 | idle, it will free its resources and exit. |
1542 | C<$nthreads> other threads are also idle, it will free its resources and |
|
|
1543 | exit. |
1534 | |
1544 | |
1535 | This is useful when you allow a large number of threads (e.g. 100 or 1000) |
1545 | This is useful when you allow a large number of threads (e.g. 100 or 1000) |
1536 | to allow for extremely high load situations, but want to free resources |
1546 | to allow for extremely high load situations, but want to free resources |
1537 | under normal circumstances (1000 threads can easily consume 30MB of RAM). |
1547 | under normal circumstances (1000 threads can easily consume 30MB of RAM). |
1538 | |
1548 | |
1539 | The default is probably ok in most situations, especially if thread |
1549 | The default is probably ok in most situations, especially if thread |
1540 | creation is fast. If thread creation is very slow on your system you might |
1550 | creation is fast. If thread creation is very slow on your system you might |
1541 | want to use larger values. |
1551 | want to use larger values. |
|
|
1552 | |
|
|
1553 | =item IO::AIO::idle_timeout $seconds |
|
|
1554 | |
|
|
1555 | Sets the minimum idle timeout (default 10) after which worker threads are |
|
|
1556 | allowed to exit. SEe C<IO::AIO::max_idle>. |
1542 | |
1557 | |
1543 | =item IO::AIO::max_outstanding $maxreqs |
1558 | =item IO::AIO::max_outstanding $maxreqs |
1544 | |
1559 | |
1545 | This is a very bad function to use in interactive programs because it |
1560 | This is a very bad function to use in interactive programs because it |
1546 | blocks, and a bad way to reduce concurrency because it is inexact: Better |
1561 | blocks, and a bad way to reduce concurrency because it is inexact: Better |