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#include <u.h>
#include <libc.h>
#include <thread.h>
#include "threadimpl.h"
extern void (*_sysfatal)(char*, va_list);
extern void (*__assert)(char*);
int mainstacksize;
static jmp_buf mainjmp;
static int mainargc;
static void
mainlauncher(void *arg)
{
threadmain(mainargc, arg);
threadexits("threadmain");
}
void
main(int argc, char **argv)
{
rfork(RFREND);
//_threaddebuglevel = (DBGSCHED|DBGCHAN|DBGREND)^~0;
_threadprocp = privalloc();
_qlockinit(_threadrendezvous);
_sysfatal = _threadsysfatal;
__assert = _threadassert;
notify(_threadnote);
if(mainstacksize == 0)
mainstacksize = 8*1024;
mainargc = argc;
_threadsetproc(_newproc(mainlauncher, argv, mainstacksize, "threadmain", 0, 0));
setjmp(mainjmp);
_schedinit();
abort(); /* not reached */
}
static void
efork(Execargs *e)
{
char buf[ERRMAX];
_threaddebug(DBGEXEC, "_schedexec %s", e->prog);
close(e->fd[0]);
exec(e->prog, e->args);
_threaddebug(DBGEXEC, "_schedexec failed: %r");
rerrstr(buf, sizeof buf);
if(buf[0]=='\0')
strcpy(buf, "exec failed");
write(e->fd[1], buf, strlen(buf));
_exits(buf);
}
int
_schedexec(Execargs *e)
{
int pid, flag;
flag = (_threadwaitchan == nil) ? RFNOWAIT : 0;
switch(pid = rfork(RFREND|RFNOTEG|RFFDG|RFMEM|RFPROC|flag)){
case 0:
efork(e);
default:
return pid;
}
}
int
_schedfork(Proc *p)
{
int pid;
switch(pid = rfork(RFPROC|RFMEM|RFNOWAIT|p->rforkflag)){
case 0:
_threadsetproc(p);
longjmp(mainjmp, 1);
default:
return pid;
}
}
void
_schedexit(Proc *p)
{
char ex[ERRMAX];
utfecpy(ex, ex+sizeof ex, p->exitstr);
free(p);
_exits(ex);
}
void
_schedexecwait(void)
{
int pid;
Channel *c;
Proc *p;
Thread *t;
Waitmsg *w;
p = _threadgetproc();
t = p->thread;
pid = t->ret;
_threaddebug(DBGEXEC, "_schedexecwait %d", t->ret);
rfork(RFCFDG);
for(;;){
w = wait();
if(w == nil)
break;
if(w->pid == pid)
break;
free(w);
}
if(w != nil){
if((c = _threadwaitchan) != nil)
sendp(c, w);
else
free(w);
}
threadexits("procexec");
}
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