1 /*
2 * This file is part of XForms.
3 *
4 * XForms is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License as
6 * published by the Free Software Foundation; either version 2.1, or
7 * (at your option) any later version.
8 *
9 * XForms is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with XForms; see the file COPYING. If not, write to
16 * the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
17 * MA 02111-1307, USA.
18 */
19
20
21 /*
22 * Test the accuracy of timer
23 *
24 * This file is part of xforms package
25 * T.C. Zhao and M. Overmars (1997)
26 */
27
28 #ifdef HAVE_CONFIG_H
29 #include "config.h"
30 #endif
31
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include "include/forms.h"
35
36
37 typedef struct {
38 FL_FORM * form0;
39 void * vdata;
40 long ldata;
41 FL_OBJECT * timer;
42 FL_OBJECT * restart;
43 FL_OBJECT * report;
44 } FD_form0;
45
46 typedef struct {
47 long sec,
48 usec;
49 } Start_Time;
50
51 static FD_form0 * create_form_form0( void );
52
53
54 /***************************************
55 ***************************************/
56
57 static void
exit_cb(FL_OBJECT * obj FL_UNUSED_ARG,long data FL_UNUSED_ARG)58 exit_cb( FL_OBJECT * obj FL_UNUSED_ARG,
59 long data FL_UNUSED_ARG )
60 {
61 fl_finish( );
62 exit( 0 );
63 }
64
65
66 /***************************************
67 * Callback for timer expiry, 'data' is set to requested delay (in ms)
68 ***************************************/
69
70 static void
timer_cb(FL_OBJECT * obj,long data)71 timer_cb( FL_OBJECT * obj,
72 long data )
73 {
74 double df;
75 FD_form0 *fd = obj->form->fdui;
76 Start_Time *start_time = fd->vdata;
77 long end_sec,
78 end_usec;
79
80 fl_gettime( &end_sec, &end_usec );
81 df = end_sec - start_time->sec + 1.0e-6 * ( end_usec - start_time->usec );
82 fl_set_object_label_f( fd->report,
83 "Timeout: %.3f s, Actual: %.3f s, Delta: %d ms",
84 0.001 * data, df, FL_nint( 1000 * df - data ) );
85 }
86
87
88 /***************************************
89 ***************************************/
90
91 static void
start_timer(FL_OBJECT * obj,long data)92 start_timer( FL_OBJECT * obj,
93 long data )
94 {
95 FD_form0 *fd = obj->form->fdui;
96 Start_Time *start_time = fd->vdata;
97 static long delay = 3000;
98
99 if ( data > 0 )
100 delay = data;
101 else
102 delay += 200;
103
104 fl_set_object_label_f( fd->report, "Timer accuracy testing %.3f sec ...",
105 0.001 * delay );
106 fl_gettime( &start_time->sec, &start_time->usec );
107 fl_set_object_callback( fd->timer, timer_cb, delay );
108 fl_set_timer( fd->timer, 0.001 * delay );
109 }
110
111
112 /***************************************
113 ***************************************/
114
115 int
main(int argc,char * argv[])116 main( int argc,
117 char * argv[ ] )
118 {
119 FD_form0 *fd_form0;
120 Start_Time start_time;
121
122 fl_initialize( &argc, argv, 0, 0, 0 );
123
124 fd_form0 = create_form_form0( );
125 fd_form0->vdata = &start_time;
126
127 start_timer( fd_form0->timer, 3000 );
128
129 fl_show_form( fd_form0->form0, FL_PLACE_CENTER, FL_FULLBORDER,
130 "Timer object precision" );
131 fl_do_forms( );
132 return 0;
133 }
134
135
136 /***************************************
137 ***************************************/
138
139 static FD_form0 *
create_form_form0(void)140 create_form_form0( void )
141 {
142 FL_OBJECT *obj;
143 FD_form0 *fdui = fl_calloc( 1, sizeof *fdui );
144
145 fdui->form0 = fl_bgn_form( FL_NO_BOX, 350, 130 );
146
147 fl_add_box( FL_UP_BOX, 0, 0, 350, 130, "" );
148
149 fdui->timer = fl_add_timer( FL_HIDDEN_TIMER, 0, 0, 0, 0, "" );
150
151 fdui->report = obj = fl_add_text( FL_NORMAL_TEXT, 20, 20, 310, 50,"" );
152 fl_set_object_align( obj, FL_ALIGN_CENTER );
153 fl_set_object_boxtype( obj, FL_DOWN_BOX );
154
155 fdui->restart = obj = fl_add_button( FL_NORMAL_BUTTON, 140, 80, 90, 35,
156 "Restart" );
157 fl_set_object_callback( obj, start_timer, 0 );
158
159 obj = fl_add_button( FL_NORMAL_BUTTON, 240, 80, 90, 35, "Done" );
160 fl_set_object_callback( obj, exit_cb, 0 );
161
162 fl_end_form( );
163
164 fdui->form0->fdui = fdui;
165
166 return fdui;
167 }
168
169
170 /*
171 * Local variables:
172 * tab-width: 4
173 * indent-tabs-mode: nil
174 * End:
175 */
176