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/*
* Copyright © 2015 Samsung Electronics Co., Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZUC_COLLECTOR_H
#define ZUC_COLLECTOR_H
struct zuc_event_listener;
struct zuc_test;
/**
* Creates a new instance of an even collector that will attatch events
* to the current test directly or via connection from child to parent.
*
* @param pipe_fd pointer to the file descriptor to use for communication if
* needed. If the value is -1 the events will be attached directly to the
* current test. Otherwise events will be passed back via IPC over this
* pipe with the expectation that the payload will be handled in the parent
* process via zuc_process_message().
* @return a new collector intance.
* @see zuc_process_message()
*/
struct zuc_event_listener *
zuc_collector_create(int *pipe_fd);
/**
* Reads events from the given pipe and processes them.
*
* @param test the currently active test to attache events for.
* @param pipe_fd the file descriptor of the pipe to read from.
* @return a positive value if a message was received, 0 if the end has
* been reached and -1 if an error has occurred.
*/
int
zuc_process_message(struct zuc_test *test, int pipe_fd);
#endif /* ZUC_COLLECTOR_H */
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