1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SIGEV_THREAD_H 28 #define _SIGEV_THREAD_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #include <signal.h> 35 #include <port.h> 36 #include <mqueue.h> 37 #include <time.h> 38 #include <limits.h> 39 #include <semaphore.h> 40 #include <thread_pool.h> 41 42 #define SIGEV_THREAD_TERM 1 43 44 typedef enum {TIMER = 1, MQ, AIO} subsystem_t; /* Calling sub-system */ 45 46 typedef struct { 47 void (*std_func)(union sigval); /* User-defined notification function */ 48 union sigval std_arg; /* Parameter of user-defined notification fct */ 49 } sigev_thread_data_t; 50 51 typedef struct thread_communication_data { 52 struct thread_communication_data *tcd_next; 53 struct sigevent tcd_notif; /* encapsulates usr fct and usr vals */ 54 pthread_attr_t tcd_user_attr; /* copy of caller's attributes */ 55 pthread_attr_t *tcd_attrp; /* NULL if caller passed NULL */ 56 int tcd_port; /* port this spawner is controlling */ 57 thread_t tcd_server_id; /* thread id of server thread */ 58 subsystem_t tcd_subsystem; /* event generating subsystem */ 59 tpool_t *tcd_poolp; /* worker thread pool */ 60 /* for creation/termination synchronization protocol */ 61 mutex_t tcd_lock; 62 cond_t tcd_cv; 63 /* subsystem-specific data */ 64 union { 65 struct { 66 int overruns; /* number of overruns */ 67 } timer; 68 struct { 69 int msg_enabled; /* notification enabled */ 70 int msg_closing; /* mq_close() is waiting */ 71 sem_t *msg_avail; /* wait for message available */ 72 void *msg_object; /* mqd_t */ 73 void *msg_userval; /* notification user value */ 74 } mqueue; 75 } tcd_object; 76 } thread_communication_data_t; 77 78 #define tcd_overruns tcd_object.timer.overruns 79 80 #define tcd_msg_enabled tcd_object.mqueue.msg_enabled 81 #define tcd_msg_closing tcd_object.mqueue.msg_closing 82 #define tcd_msg_avail tcd_object.mqueue.msg_avail 83 #define tcd_msg_object tcd_object.mqueue.msg_object 84 #define tcd_msg_userval tcd_object.mqueue.msg_userval 85 86 /* Generic functions common to all entities */ 87 extern thread_communication_data_t *setup_sigev_handler( 88 const struct sigevent *, subsystem_t); 89 extern void free_sigev_handler(thread_communication_data_t *); 90 extern int launch_spawner(thread_communication_data_t *); 91 extern void tcd_teardown(thread_communication_data_t *); 92 93 /* Additional functions for different entities */ 94 extern void *timer_spawner(void *); 95 extern int del_sigev_timer(timer_t); 96 extern int sigev_timer_getoverrun(timer_t); 97 extern void *mqueue_spawner(void *); 98 extern void del_sigev_mq(thread_communication_data_t *); 99 extern void *aio_spawner(void *); 100 101 /* Private interfaces elsewhere in libc */ 102 extern int pthread_attr_clone(pthread_attr_t *, const pthread_attr_t *); 103 extern int pthread_attr_equal(const pthread_attr_t *, const pthread_attr_t *); 104 extern int _port_dispatch(int, int, int, int, uintptr_t, void *); 105 106 extern thread_communication_data_t *sigev_aio_tcd; 107 108 extern int timer_max; 109 extern thread_communication_data_t **timer_tcd; 110 111 #ifdef __cplusplus 112 } 113 #endif 114 115 #endif /* _SIGEV_THREAD_H */ 116