sewardj | 1ac2110 | 2011-06-15 21:30:55 +0000 | [diff] [blame] | 1 | #include <stdlib.h> |
| 2 | #include <stdio.h> |
| 3 | #include <errno.h> |
| 4 | #include <unistd.h> |
| 5 | #include <sys/wait.h> |
| 6 | void fork_chain(int level) |
| 7 | { |
| 8 | int pid; |
| 9 | |
| 10 | printf ("forking level %d\n", level); |
| 11 | fflush (stdout); |
| 12 | pid = fork(); |
| 13 | if (pid == -1) { |
| 14 | perror("fork"); |
| 15 | exit(1); |
| 16 | } |
| 17 | |
| 18 | if (pid == 0) { |
| 19 | if (level > 0) { |
| 20 | fork_chain (level - 1); |
| 21 | } |
| 22 | } else { |
| 23 | int ret; |
| 24 | int status; |
| 25 | while((ret = waitpid(pid, &status, 0)) != pid) { |
| 26 | if (errno != EINTR) { |
| 27 | perror("waitpid"); |
| 28 | exit(1); |
| 29 | } |
| 30 | } |
| 31 | } |
| 32 | } |
| 33 | int main() |
| 34 | { |
sewardj | f5194b3 | 2011-07-04 22:00:41 +0000 | [diff] [blame] | 35 | fork_chain (15); |
sewardj | 1ac2110 | 2011-06-15 21:30:55 +0000 | [diff] [blame] | 36 | return 0; |
| 37 | } |