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libposix: more code for signals

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This commit is contained in:
Giacomo Tesio
2017-05-25 01:04:53 +02:00
parent 68bc46fe85
commit a59b992ed4
5 changed files with 128 additions and 113 deletions
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35
sys/src/lib/posix/processes.c
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@ -79,6 +79,39 @@ __libposix_free_child_list(void)
}
}
int
__libposix_is_child(int pid)
{
ChildList *l;
/* free the wait list as the memory is shared */
l = *__libposix_child_list;
while(l != nil){
if(l->pid == pid)
return 1;
l = l->next;
}
return 0;
}
void
__libposix_forget_child(int pid)
{
ChildList **l, *c;
/* free the wait list as the memory is shared */
l = __libposix_child_list;
while(*l != nil){
c = *l
if(c->pid == pid){
*l = c->next;
free(c);
return;
}
l = &c->next;
}
}
void
__libposix_setup_new_process(void)
{
@ -177,6 +210,7 @@ POSIX_wait(int *errnop, int *status)
return -1;
}
pid = w->pid;
__libposix_forget_child(pid);
if(w->msg[0] != 0){
s = strstr(w->msg, __POSIX_EXIT_PREFIX);
if(s){
@ -262,6 +296,7 @@ WaitAgain:
return -1;
}
pid = w->pid;
__libposix_forget_child(pid);
if(w->msg[0] != 0){
s = strstr(w->msg, __POSIX_EXIT_PREFIX);
if(s){