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comparison src/X_main.c @ 49:6a3726fa7aad

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Reduce times of invoking gettimeofday()
author Thinker K.F. Li <thinker@branda.to>
date Sat, 09 Aug 2008 18:34:24 +0800
parents bdf711cbf0fb
children 59a295651480
comparison
equal deleted inserted replaced
48:bdf711cbf0fb 49:6a3726fa7aad
88 int xcon; 88 int xcon;
89 fd_set rds; 89 fd_set rds;
90 int nfds; 90 int nfds;
91 struct timeval tmo; 91 struct timeval tmo;
92 mb_timeval_t mb_tmo; 92 mb_timeval_t mb_tmo;
93 int r; 93 int r, r1;
94 94
95 XSelectInput(display, win, PointerMotionMask | ExposureMask); 95 XSelectInput(display, win, PointerMotionMask | ExposureMask);
96 XFlush(display); 96 XFlush(display);
97 97
98 xcon = XConnectionNumber(display); 98 xcon = XConnectionNumber(display);
99 nfds = xcon + 1; 99 nfds = xcon + 1;
100
101 r = gettimeofday(&tmo, NULL);
102 if(r == -1) {
103 perror("gettimeofday");
104 return;
105 }
106 MB_TIMEVAL_SET(&mb_tmo, tmo.tv_sec, tmo.tv_usec);
107
100 while(1) { 108 while(1) {
101 FD_ZERO(&rds); 109 FD_ZERO(&rds);
102 FD_SET(xcon, &rds); 110 FD_SET(xcon, &rds);
103 r = gettimeofday(&tmo, NULL); 111
104 if(r == -1) {
105 perror("gettimeofday");
106 return;
107 }
108
109 MB_TIMEVAL_SET(&mb_tmo, tmo.tv_sec, tmo.tv_usec);
110 r = mb_tman_next_timeout(tman, &mb_tmo, &mb_tmo); 112 r = mb_tman_next_timeout(tman, &mb_tmo, &mb_tmo);
111 if(r != OK) 113 if(r != OK)
112 r = select(nfds, &rds, NULL, NULL, NULL); 114 r = select(nfds, &rds, NULL, NULL, NULL);
113 else { 115 else {
114 tmo.tv_sec = MB_TIMEVAL_SEC(&mb_tmo); 116 tmo.tv_sec = MB_TIMEVAL_SEC(&mb_tmo);
118 120
119 if(r == -1) { 121 if(r == -1) {
120 perror("select"); 122 perror("select");
121 return; 123 return;
122 } 124 }
125
126 r1 = gettimeofday(&tmo, NULL);
127 if(r1 == -1) {
128 perror("gettimeofday");
129 return;
130 }
131 MB_TIMEVAL_SET(&mb_tmo, tmo.tv_sec, tmo.tv_usec);
132
123 if(r == 0) { 133 if(r == 0) {
124 r = gettimeofday(&tmo, NULL);
125 if(r == -1) {
126 perror("gettimeofday");
127 return;
128 }
129 MB_TIMEVAL_SET(&mb_tmo, tmo.tv_sec, tmo.tv_usec); 134 MB_TIMEVAL_SET(&mb_tmo, tmo.tv_sec, tmo.tv_usec);
130 mb_tman_handle_timeout(tman, &mb_tmo); 135 mb_tman_handle_timeout(tman, &mb_tmo);
131 rdman_redraw_changed(rdman); 136 rdman_redraw_changed(rdman);
132 XFlush(display); 137 XFlush(display);
133 } else if(FD_ISSET(xcon, &rds)) { 138 } else if(FD_ISSET(xcon, &rds)) {