src/server/daemon/event_solaris.c

Sat, 29 Dec 2012 18:08:23 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 29 Dec 2012 18:08:23 +0100
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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2011 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31 #include <atomic.h>
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32
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33 #include "event_solaris.h"
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34
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35 event_handler_t* evhandler_create(int numthreads) {
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36 event_handler_t *ev = malloc(sizeof(event_handler_t));
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37 if(ev == NULL) {
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38 return NULL;
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39 }
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40
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41 ev->ports = calloc(numthreads, sizeof(int));
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42 if(ev->ports == NULL) {
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43 free(ev);
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44 return NULL;
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45 }
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46 ev->nports = numthreads;
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47 ev->lp = 0;
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48
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49 /* create ports event threads */
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50 for(int i=0;i<numthreads;i++) {
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51 /* create port */
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52 ev->ports[i] = port_create();
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53 if(ev->ports[i] == 0) {
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54 free(ev->ports);
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55 free(ev);
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56 return NULL;
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57 }
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58
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59 /*
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60 * start a new handler thread
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61 * the thread needs the event port and a pointer to the event handler
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62 */
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63 ev_thr_conf_t *conf = malloc(sizeof(ev_thr_conf_t));
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64 if(conf == NULL) {
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65 free(ev->ports);
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66 free(ev);
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67 return NULL;
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68 }
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69 conf->handler = ev;
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70 conf->port = ev->ports[i];
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71
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72 ev_thr_conf_t *thrconf = malloc(sizeof(ev_thr_conf_t));
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73 thrconf->handler = ev;
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74 thrconf->port = ev->ports[i];
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75 systhread_start(0, 0, (thrstartfunc)ev_handle_events, thrconf);
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76 /* TODO: error handling */
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77 }
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78
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79 return ev;
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80 }
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81
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82 void ev_handle_events(ev_thr_conf_t *conf) {
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83 event_handler_t *ev = conf->handler;
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84 int port = conf->port;
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85
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86 free(conf);
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87
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88 port_event_t events[16];
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89 struct timespec timeout;
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90 timeout.tv_nsec = 0;
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91 timeout.tv_sec = 600;
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92
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93 for(;;) {
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94 /* wait for events */
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95 uint_t nev = 1;
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96 int ret = port_getn(port, events, 16, &nev, &timeout);
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97 if(ret == -1) {
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98 /* TODO: check for error */
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99 perror("port_getn");
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100 continue;
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101 }
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102
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103 for(int i=0;i<nev;i++) {
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104 event_t *event = events[i].portev_user;
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105 if(event->fn) {
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106 event->fn(ev, event);
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107 }
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108 }
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109 }
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110 }
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111
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112 /* returns a event handler port */
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113 int ev_get_port(event_handler_t *h) {
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114 int nps = h->nports;
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115 if(nps == 1) {
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116 return h->ports[0];
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117 }
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118
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119 int cp = h->lp % nps;
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120 atomic_inc_32(&h->lp);
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121
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122 return h->ports[cp];
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123 }
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124
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125 int ev_pollin(event_handler_t *h, int fd, event_t *event) {
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126 event->object = (intptr_t)fd;
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127 return port_associate(
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128 ev_get_port(h),
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129 PORT_SOURCE_FD,
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130 (uintptr_t)fd,
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131 POLLIN,
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132 event);
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133 }
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134
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135 int ev_pollout(event_handler_t *h, int fd, event_t *event) {
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136 event->object = (intptr_t)fd;
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137 return port_associate(
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138 ev_get_port(h),
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139 PORT_SOURCE_FD,
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140 (uintptr_t)fd,
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141 POLLOUT,
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142 event);
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143 }
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144
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145 int evt_send(event_handler_t *h, event_t *event) {
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146 event->object = 0;
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147 return port_send(ev_get_port(h), 0, event);
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148 }

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