root / branches / simulator / projects / simulator / libsim / libsim.c @ 1056
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1 | 986 | bneuman | #include <stdio.h> |
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2 | #include <stdlib.h> |
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3 | #include <sys/time.h> |
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4 | #include <signal.h> |
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5 | #include <unistd.h> |
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6 | #include <stdlib.h> |
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7 | #include <sys/shm.h> |
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8 | #include <sys/ipc.h> |
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9 | 993 | ayeager | #include <robot_shared.h> |
10 | 986 | bneuman | #include <string.h> |
11 | 1039 | bneuman | |
12 | 1056 | bneuman | #define TICK_USEC 100 |
13 | |||
14 | 993 | ayeager | RobotShared* shared_state; |
15 | 986 | bneuman | |
16 | void *tick(int sig) |
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17 | { |
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18 | if(raise(SIGTSTP)<0) |
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19 | printf("could not kill self!\n");
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20 | |||
21 | return NULL; |
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22 | } |
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23 | |||
24 | |||
25 | 906 | bcoltin | void dragonfly_init(int config) |
26 | { |
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27 | 986 | bneuman | struct itimerval iv;
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28 | int ret;
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29 | 906 | bcoltin | |
30 | 996 | bneuman | shared_state = shmat(atoi(getenv("memory_id")), NULL, 0); |
31 | |||
32 | 986 | bneuman | if(shared_state < 0) |
33 | { |
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34 | 1047 | bcoltin | fprintf(stderr, "unable to get shared memory region\n");
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35 | return;
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36 | 993 | ayeager | } |
37 | 986 | bneuman | |
38 | |||
39 | printf("hello. I am a robot w/ memory_id %s\n", getenv("memory_id")); |
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40 | |||
41 | |||
42 | 1020 | bcoltin | iv.it_interval.tv_sec = 0;
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43 | 1056 | bneuman | iv.it_interval.tv_usec = TICK_USEC; |
44 | 1020 | bcoltin | iv.it_value.tv_sec = 0;
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45 | 1056 | bneuman | iv.it_value.tv_usec = TICK_USEC; |
46 | 986 | bneuman | |
47 | signal(SIGVTALRM, tick); |
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48 | |||
49 | ret = setitimer(ITIMER_VIRTUAL, &iv, NULL);
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50 | |||
51 | 1047 | bcoltin | //printf("setitimer returned %d.\n waiting...\n", ret);
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52 | 986 | bneuman | fflush(stdout); |
53 | |||
54 | //TODO: clean up code??
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55 | |||
56 | 906 | bcoltin | } |