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make -> mk

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remove clumsy stack hack.
fix exec.
fix nthreads maintenance.
fix threadexitsall not to kill self.
add sun support.
This commit is contained in:
rsc 2003-11-23 18:18:00 +00:00
parent b7e6f4150f
commit cd7ddc9b5f
10 changed files with 105 additions and 116 deletions
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57
src/libthread/create.c
View file

@ -7,54 +7,10 @@ static int nextID(void);
/*
* Create and initialize a new Thread structure attached to a given proc.
*/
typedef struct Stack Stack;
struct Stack {
ulong magic;
Thread *thr;
Stack *next;
uchar buf[STKSIZE-12];
};
static Stack *stkfree;
static Lock stklock;
void
_stackfree(void *v)
{
Stack *s;
s = v;
lock(&stklock);
s->thr = nil;
s->magic = 0;
s->next = stkfree;
stkfree = s;
unlock(&stklock);
}
static Stack*
stackalloc(void)
{
char *buf;
Stack *s;
int i;
lock(&stklock);
while(stkfree == nil){
unlock(&stklock);
assert(STKSIZE == sizeof(Stack));
buf = malloc(STKSIZE+128*STKSIZE);
s = (Stack*)(((ulong)buf+STKSIZE)&~(STKSIZE-1));
for(i=0; i<128; i++)
_stackfree(&s[i]);
lock(&stklock);
}
s = stkfree;
stkfree = stkfree->next;
unlock(&stklock);
s->magic = STKMAGIC;
return s;
free(v);
}
static int
@ -62,16 +18,15 @@ newthread(Proc *p, void (*f)(void *arg), void *arg, uint stacksize, char *name,
{
int id;
Thread *t;
Stack *s;
char *s;
if(stacksize < 32)
sysfatal("bad stacksize %d", stacksize);
t = _threadmalloc(sizeof(Thread), 1);
s = stackalloc();
s->thr = t;
s = _threadmalloc(stacksize, 0);
t->stk = (char*)s;
t->stksize = STKSIZE;
_threaddebugmemset(s->buf, 0xFE, sizeof s->buf);
t->stksize = stacksize;
_threaddebugmemset(s, 0xFE, stacksize);
_threadinitstack(t, f, arg);
t->proc = p;
t->grp = grp;
@ -138,7 +93,7 @@ _freeproc(Proc *p)
if(t->cmdname)
free(t->cmdname);
assert(t->stk != nil);
_stackfree((Stack*)t->stk);
_stackfree(t->stk);
nextt = t->nextt;
free(t);
}