Fix small bugs.
diff --git a/src/libthread/386.c b/src/libthread/386.c
index d8052f0..2c611e4 100644
--- a/src/libthread/386.c
+++ b/src/libthread/386.c
@@ -15,7 +15,7 @@
p = _threadgetproc();
t = p->thread;
- _threadstacklimit(t->stk);
+ _threadstacklimit(t->stk, t->stk+t->stksize);
(*f)(arg);
threadexits(nil);
@@ -39,18 +39,19 @@
USED(enter);
#ifdef USEVALGRIND
if(enter)
- VALGRIND_SET_STACK_LIMIT(0, 0, 1);
- else
VALGRIND_SET_STACK_LIMIT(0, 0, 0);
+ else
+ VALGRIND_SET_STACK_LIMIT(0, 0, 1);
#endif
}
void
-_threadstacklimit(void *addr)
+_threadstacklimit(void *bottom, void *top)
{
- USED(addr);
+ USED(bottom);
+ USED(top);
#ifdef USEVALGRIND
- VALGRIND_SET_STACK_LIMIT(1, addr, 0);
+ VALGRIND_SET_STACK_LIMIT(1, bottom, top);
#endif
}
diff --git a/src/libthread/PowerMacintosh.c b/src/libthread/PowerMacintosh.c
index 21f6041..94d4db9 100644
--- a/src/libthread/PowerMacintosh.c
+++ b/src/libthread/PowerMacintosh.c
@@ -32,7 +32,7 @@
}
void
-_threadstacklimit(void *addr)
+_threadstacklimit(void *addr, void *addr2)
{
USED(addr);
}
diff --git a/src/libthread/create.c b/src/libthread/create.c
index b63fee4..f5f0d6c 100644
--- a/src/libthread/create.c
+++ b/src/libthread/create.c
@@ -24,6 +24,7 @@
if(stacksize < 32)
sysfatal("bad stacksize %d", stacksize);
t = _threadmalloc(sizeof(Thread), 1);
+ t->lastfd = -1;
s = _threadmalloc(stacksize, 0);
t->stk = (uchar*)s;
t->stksize = stacksize;
diff --git a/src/libthread/fdwait.c b/src/libthread/fdwait.c
index 927fc64..a689033 100644
--- a/src/libthread/fdwait.c
+++ b/src/libthread/fdwait.c
@@ -2,12 +2,13 @@
#include <u.h>
#include <libc.h>
#include <thread.h>
-
+#include "threadimpl.h"
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#define debugpoll 0
+static int noblocked[4096/32];
#ifdef __APPLE__
#include <sys/time.h>
@@ -174,11 +175,15 @@
struct {
Channel c;
+ Alt *qentry[2];
ulong x;
} s;
threadfdwaitsetup();
chaninit(&s.c, sizeof(ulong), 1);
+ s.c.qentry = (volatile Alt**)s.qentry;
+ s.c.nentry = 2;
+ memset(s.qentry, 0, sizeof s.qentry);
for(i=0; i<npoll; i++)
if(pfd[i].fd == -1)
break;
@@ -223,7 +228,25 @@
void
threadfdnoblock(int fd)
{
+ Thread *t;
+
+ if(fd<0)
+ return;
+ if(fd < 8*sizeof(int)*nelem(noblocked)
+ && (noblocked[fd/(8*sizeof(int))] & (1<<(fd%(8*sizeof(int))))))
+ return;
+ t = _threadgetproc()->thread;
+ if(t && t->lastfd == fd)
+ return;
fcntl(fd, F_SETFL, fcntl(fd, F_GETFL, 0)|O_NONBLOCK);
+ if(t)
+ t->lastfd = fd;
+
+ /* We could lock this but we're probably single-threaded
+ * and the worst that will happen is we'll run fcntl
+ * a few more times.
+ */
+ noblocked[fd/(8*sizeof(int))] |= 1<<(fd%(8*sizeof(int)));
}
long
diff --git a/src/libthread/main.c b/src/libthread/main.c
index 04e6cd9..bc7ad0f 100644
--- a/src/libthread/main.c
+++ b/src/libthread/main.c
@@ -32,24 +32,12 @@
exit(_threadexitsallstatus[0] ? 1 : 0);
}
-static void
-_nop(int x)
-{
- USED(x);
-}
-
int
main(int argc, char **argv)
{
Mainarg *a;
Proc *p;
- signal(SIGTERM, _threaddie);
- signal(SIGCHLD, _nop);
- signal(SIGALRM, _nop);
-// signal(SIGINFO, _threadstatus);
-// rfork(RFREND);
-
//_threaddebuglevel = (DBGSCHED|DBGCHAN|DBGREND)^~0;
_systhreadinit();
_qlockinit(_threadrendezvous);
diff --git a/src/libthread/mkfile b/src/libthread/mkfile
index 1ced902..f8ec8e8 100644
--- a/src/libthread/mkfile
+++ b/src/libthread/mkfile
@@ -59,6 +59,7 @@
# sorry
VG=`test -d /home/rsc/pub/valgrind-debian && echo -DUSEVALGRIND`
+# VG=
CFLAGS=$CFLAGS $VG
diff --git a/src/libthread/sched.c b/src/libthread/sched.c
index 9ad7298..bdb9ad6 100644
--- a/src/libthread/sched.c
+++ b/src/libthread/sched.c
@@ -171,7 +171,7 @@
}
}
-void
+int
_sched(void)
{
Proc *p;
@@ -186,8 +186,8 @@
// psstate(t->state), &t->sched, &p->sched);
if(_setlabel(&t->sched)==0)
_gotolabel(&p->sched);
- _threadstacklimit(t->stk);
- return;
+ _threadstacklimit(t->stk, t->stk+t->stksize);
+ return p->nsched++;
}else{
t = runthread(p);
if(t == nil){
@@ -277,10 +277,15 @@
unlock(&p->readylock);
}
-void
+int
yield(void)
{
- _sched();
+ Proc *p;
+ int nsched;
+
+ p = _threadgetproc();
+ nsched = p->nsched;
+ return _sched() - nsched;
}
void
diff --git a/src/libthread/sun4u.c b/src/libthread/sun4u.c
index 6312dac..0d2d8d2 100644
--- a/src/libthread/sun4u.c
+++ b/src/libthread/sun4u.c
@@ -46,7 +46,7 @@
}
void
-_threadstacklimit(void *addr)
+_threadstacklimit(void *addr, void *addr2)
{
USED(addr);
}
diff --git a/src/libthread/threadimpl.h b/src/libthread/threadimpl.h
index 373164a..7e44e64 100644
--- a/src/libthread/threadimpl.h
+++ b/src/libthread/threadimpl.h
@@ -99,6 +99,7 @@
ulong userpc;
void* udata[NPRIV]; /* User per-thread data pointer */
+ int lastfd;
};
struct Execargs
@@ -143,6 +144,7 @@
Waitmsg *waitmsg;
void* udata; /* User per-proc data pointer */
+ int nsched;
};
struct Pqueue { /* Proc queue */
@@ -169,7 +171,7 @@
Proc* _newproc(void(*)(void*), void*, uint, char*, int, int);
int _procsplhi(void);
void _procsplx(int);
-void _sched(void);
+int _sched(void);
int _schedexec(Execargs*);
void _schedexecwait(void);
void _schedexit(Proc*);
@@ -219,4 +221,4 @@
extern void _threadmemset(void*, int, int);
extern void _threaddebugmemset(void*, int, int);
extern int _threadprocs;
-extern void _threadstacklimit(void*);
+extern void _threadstacklimit(void*, void*);
