o5r/plan9port
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

better exec handling

Browse source
This commit is contained in:
rsc 2004-12-27 19:11:33 +00:00
parent 0341761074
commit 8cbd854a8a
5 changed files with 43 additions and 78 deletions
Download patch file Download diff file Expand all files Collapse all files

33
src/libthread/Linux.c
View file

@ -99,13 +99,15 @@ again:
sigdelset(&mask, SIGUSR1);
sigsuspend(&mask);
//print("%d %d awake again\n", time(0), getpid());
/*
* We're awake. Make USR1 not interrupt system calls.
*/
lock(r->l);
ignusr1(1);
if(r->asleep && r->pid == getpid()){
print("resleep %d\n", getpid());
//print("resleep %d\n", getpid());
/* Didn't really wake up - signal from something else */
goto again;
}
@ -265,35 +267,6 @@ threadexitsall(char *msg)
exits(msg);
}
/*
* exec - need to arrange for wait proc to run
* the execs so it gets the wait messages
*/
int
_runthreadspawn(int *fd, char *cmd, char **argv)
{
Execjob e;
int pid;
e.fd = fd;
e.cmd = cmd;
e.argv = argv;
e.c = chancreate(sizeof(ulong), 0);
print("%d run\n", time(0));
qlock(&_threadexeclock);
sendp(_threadexecchan, &e);
print("%d sent\n", time(0));
while(_threadexecproc == nil)
yield();
kill(_threadexecproc->osprocid, SIGUSR2);
print("%d killed\n", time(0));
pid = recvul(e.c);
qunlock(&_threadexeclock);
print("%d ran\n", time(0));
return pid;
}
/*
* per-process data, indexed by pid
*