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72 lines
3.0 KiB
72 lines
3.0 KiB
6 years ago
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<class name = "zpoller" state = "stable">
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<!--
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Copyright (c) the Contributors as noted in the AUTHORS file.
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This file is part of CZMQ, the high-level C binding for 0MQ:
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http://czmq.zeromq.org.
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at http://mozilla.org/MPL/2.0/.
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-->
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event-driven reactor
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<constructor>
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Create new poller, specifying zero or more readers. The list of
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readers ends in a NULL. Each reader can be a zsock_t instance, a
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zactor_t instance, a libzmq socket (void *), or a file handle.
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<argument name = "reader" type = "sockish" variadic = "1" />
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</constructor>
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<destructor>
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Destroy a poller
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</destructor>
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<method name = "add">
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Add a reader to be polled. Returns 0 if OK, -1 on failure. The reader may
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be a libzmq void * socket, a zsock_t instance, or a zactor_t instance.
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<argument name = "reader" type = "sockish" />
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<return type = "integer" />
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</method>
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<method name = "remove">
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Remove a reader from the poller; returns 0 if OK, -1 on failure. The reader
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must have been passed during construction, or in an zpoller_add () call.
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<argument name = "reader" type = "anything" />
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<return type = "integer" />
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</method>
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<method name = "set nonstop" >
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By default the poller stops if the process receives a SIGINT or SIGTERM
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signal. This makes it impossible to shut-down message based architectures
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like zactors. This method lets you switch off break handling. The default
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nonstop setting is off (false).
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<argument name = "nonstop" type = "boolean" />
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</method>
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<method name = "wait">
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Poll the registered readers for I/O, return first reader that has input.
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The reader will be a libzmq void * socket, or a zsock_t or zactor_t
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instance as specified in zpoller_new/zpoller_add. The timeout should be
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zero or greater, or -1 to wait indefinitely. Socket priority is defined
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by their order in the poll list. If you need a balanced poll, use the low
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level zmq_poll method directly. If the poll call was interrupted (SIGINT),
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or the ZMQ context was destroyed, or the timeout expired, returns NULL.
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You can test the actual exit condition by calling zpoller_expired () and
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zpoller_terminated (). The timeout is in msec.
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<argument name = "timeout" type = "integer" />
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<return type = "sockish" />
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</method>
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<method name = "expired">
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Return true if the last zpoller_wait () call ended because the timeout
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expired, without any error.
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<return type = "boolean" />
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</method>
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<method name = "terminated">
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Return true if the last zpoller_wait () call ended because the process
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was interrupted, or the parent context was destroyed.
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<return type = "boolean" />
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</method>
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</class>
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