85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __FDEVENT_H
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#define __FDEVENT_H
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#include <stddef.h>
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#include <stdint.h> /* for int64_t */
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/* events that may be observed */
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#define FDE_READ 0x0001
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#define FDE_WRITE 0x0002
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#define FDE_ERROR 0x0004
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/* features that may be set (via the events set/add/del interface) */
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#define FDE_DONT_CLOSE 0x0080
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typedef void (*fd_func)(int fd, unsigned events, void *userdata);
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struct fdevent {
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fdevent *next;
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fdevent *prev;
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int fd;
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int force_eof;
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uint16_t state;
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uint16_t events;
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fd_func func;
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void *arg;
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};
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/* Allocate and initialize a new fdevent object
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* Note: use FD_TIMER as 'fd' to create a fd-less object
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* (used to implement timers).
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*/
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fdevent *fdevent_create(int fd, fd_func func, void *arg);
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/* Uninitialize and deallocate an fdevent object that was
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** created by fdevent_create()
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*/
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void fdevent_destroy(fdevent *fde);
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/* Initialize an fdevent object that was externally allocated
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*/
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void fdevent_install(fdevent *fde, int fd, fd_func func, void *arg);
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/* Uninitialize an fdevent object that was initialized by
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** fdevent_install()
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*/
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void fdevent_remove(fdevent *item);
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/* Change which events should cause notifications
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*/
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void fdevent_set(fdevent *fde, unsigned events);
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void fdevent_add(fdevent *fde, unsigned events);
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void fdevent_del(fdevent *fde, unsigned events);
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void fdevent_set_timeout(fdevent *fde, int64_t timeout_ms);
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/* loop forever, handling events.
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*/
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void fdevent_loop();
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// For debugging only.
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size_t fdevent_installed_count();
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// For debugging only.
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void fdevent_reset();
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#endif
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