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one question in tsh.c/sigchld_handler #1

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Binary file removed 0_CProgrammingLab/cprogramminglab-handout.tar
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5 changes: 3 additions & 2 deletions 5_ShellLab/shlab-handout/tsh.c
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Original file line number Diff line number Diff line change
Expand Up @@ -389,12 +389,13 @@ void sigchld_handler(int sig) {
} else if (WIFSIGNALED(status)) {
// Child process is terminated by signal of WTERMSIG(code)
deletejob(jobs, pid);
printf("Job [%d] (%d) terminated by signal %d\n",
sio_put("Job [%d] (%d) terminated by signal %d\n",
jid, pid, WTERMSIG(status));
// instead of using printf, use sio_put to avoid interleaving.
} else if (WIFSTOPPED(status)) {
// child process was stopped by signal of WSTOPSIG(code)
setjobstate(jobs, pid, ST);
printf("Job [%d] (%d) stopped by signal %d\n",
sio_put("Job [%d] (%d) stopped by signal %d\n",
jid, pid, WSTOPSIG(status));
}

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