source: abuse/tags/pd/imlib/timer.c @ 49

Last change on this file since 49 was 49, checked in by Sam Hocevar, 11 years ago
  • Imported original public domain release, for future reference.
  • Property svn:keywords set to Id
File size: 1.7 KB
Line 
1#include "system.h"
2
3#ifdef __UNIX_XWIN
4#include <stdio.h>
5#include <sys/time.h>
6#include <stdlib.h>
7#include <signal.h>
8#include <unistd.h>
9#include <signal.h>
10
11
12//#ifndef setitimer
13//extern "C" {
14//int setitimer(int Which, struct itimerval *Value,
15//                              struct itimerval *Ovalue);
16//} ;
17//#endif
18
19struct sigaction sa;
20typedef void (*int_handler)();
21#define SETSIG(sig,fun) (int_handler)sa.sa_handler=fun; \
22                        sa.sa_flags=0; \
23                        sigemptyset(&sa.sa_mask); \
24                        sigaddset(&sa.sa_mask,SIGALRM); \
25                        sigaction(sig,&sa,NULL);
26
27
28
29//void timer_handler()
30//{
31//  SETSIG(SIGALRM,timer_handler);
32//  printf("%ld\n",jclock++);
33//  fflush(stdout);
34//}
35
36
37void init_timer(int_handler int_proc, long utime)
38{
39  itimerval newt;
40  SETSIG(SIGALRM,int_proc);
41  newt.it_interval.tv_sec=0;
42  newt.it_interval.tv_usec=utime;
43  newt.it_value.tv_sec=0;
44  newt.it_value.tv_usec=utime;
45  setitimer(ITIMER_REAL,&newt,NULL);
46}
47#else
48  #ifdef __BCPLUSPLUS__
49  #include <stdio.h>
50  #include <dos.h>
51  #include <conio.h>
52
53  #define INTR 0X1C    /* The clock tick interrupt */
54  void interrupt ( *oldhandler)(...);
55
56  int count=0;
57
58  void interrupt handler(...)
59  {
60  /* increase the global counter */
61     count++;
62
63  /* call the old routine */
64     oldhandler();
65  }
66
67  int main(void)
68  {
69  /* save the old interrupt vector */
70     oldhandler = getvect(INTR);
71
72  /* install the new interrupt handler */
73     setvect(INTR, handler);
74
75  /* loop until the counter exceeds 20 */
76     while (count < 20)
77        printf("count is %d\n",count);
78
79  /* reset the old interrupt handler */
80     setvect(INTR, oldhandler);
81
82     return 0;
83  }
84
85
86
87  #else
88  #error Timer not supported for this compiler! Use Borland or gcc
89  #endif
90#endif
91
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