/usr/include/zpoller.h is in libczmq-dev 4.1.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | /* =========================================================================
zpoller - trivial socket poller class
Copyright (c) the Contributors as noted in the AUTHORS file.
This file is part of CZMQ, the high-level C binding for 0MQ:
http://czmq.zeromq.org.
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
=========================================================================
*/
#ifndef __zpoller_H_INCLUDED__
#define __zpoller_H_INCLUDED__
#ifdef __cplusplus
extern "C" {
#endif
// @warning THE FOLLOWING @INTERFACE BLOCK IS AUTO-GENERATED BY ZPROJECT
// @warning Please edit the model at "api/zpoller.api" to make changes.
// @interface
// This is a stable class, and may not change except for emergencies. It
// is provided in stable builds.
// Create new poller, specifying zero or more readers. The list of
// readers ends in a NULL. Each reader can be a zsock_t instance, a
// zactor_t instance, a libzmq socket (void *), or a file handle.
CZMQ_EXPORT zpoller_t *
zpoller_new (void *reader, ...);
// Destroy a poller
CZMQ_EXPORT void
zpoller_destroy (zpoller_t **self_p);
// Add a reader to be polled. Returns 0 if OK, -1 on failure. The reader may
// be a libzmq void * socket, a zsock_t instance, or a zactor_t instance.
CZMQ_EXPORT int
zpoller_add (zpoller_t *self, void *reader);
// Remove a reader from the poller; returns 0 if OK, -1 on failure. The reader
// must have been passed during construction, or in an zpoller_add () call.
CZMQ_EXPORT int
zpoller_remove (zpoller_t *self, void *reader);
// By default the poller stops if the process receives a SIGINT or SIGTERM
// signal. This makes it impossible to shut-down message based architectures
// like zactors. This method lets you switch off break handling. The default
// nonstop setting is off (false).
CZMQ_EXPORT void
zpoller_set_nonstop (zpoller_t *self, bool nonstop);
// Poll the registered readers for I/O, return first reader that has input.
// The reader will be a libzmq void * socket, or a zsock_t or zactor_t
// instance as specified in zpoller_new/zpoller_add. The timeout should be
// zero or greater, or -1 to wait indefinitely. Socket priority is defined
// by their order in the poll list. If you need a balanced poll, use the low
// level zmq_poll method directly. If the poll call was interrupted (SIGINT),
// or the ZMQ context was destroyed, or the timeout expired, returns NULL.
// You can test the actual exit condition by calling zpoller_expired () and
// zpoller_terminated (). The timeout is in msec.
CZMQ_EXPORT void *
zpoller_wait (zpoller_t *self, int timeout);
// Return true if the last zpoller_wait () call ended because the timeout
// expired, without any error.
CZMQ_EXPORT bool
zpoller_expired (zpoller_t *self);
// Return true if the last zpoller_wait () call ended because the process
// was interrupted, or the parent context was destroyed.
CZMQ_EXPORT bool
zpoller_terminated (zpoller_t *self);
// Self test of this class.
CZMQ_EXPORT void
zpoller_test (bool verbose);
// @end
#ifdef __cplusplus
}
#endif
#endif
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