| 90 | } |
| 91 | |
| 92 | void |
| 93 | reader(int fd) |
| 94 | { |
| 95 | int *sharedMemory; |
| 96 | int i; |
| 97 | |
| 98 | sharedMemory = mmap(0, sizeof(int), PROT_READ, MAP_SHARED, fd, 0); |
| 99 | if (sharedMemory == MAP_FAILED) { |
| 100 | perror("mmap"); |
| 101 | exit(1); |
| 102 | } |
| 103 | for (i = -1;;) { |
| 104 | if (*sharedMemory > i) { |
| 105 | i = *sharedMemory; |
| 106 | printf("%d ", i); |
| 107 | fflush(stdout); |
| 108 | } |
| 109 | sleep(1); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | void |
| 114 | writer(int fd) |