mirror of
https://github.com/golang/go
synced 2024-11-12 06:40:22 -07:00
runtime: openbsd thread tweaks
- Rename sys_sched_yield() to osyield() as this is now defined in asm.h. - Only print kern.rtheads message if rfork_thread() failed with ENOTSUP. - Remove unused variables. R=rsc CC=golang-dev https://golang.org/cl/4973043
This commit is contained in:
parent
45bd7b07e5
commit
8aa2591b13
@ -55,10 +55,10 @@ TEXT runtime·rfork_thread(SB),7,$0
|
||||
// It shouldn't return. If it does, exit
|
||||
MOVL $302, AX // sys_threxit
|
||||
SYSCALL
|
||||
JMP -3(PC) // keep exiting
|
||||
JMP -3(PC) // keep exiting
|
||||
|
||||
TEXT runtime·sys_sched_yield(SB),7,$0
|
||||
MOVL $298, AX
|
||||
TEXT runtime·osyield(SB),7,$0
|
||||
MOVL $298, AX // sys_sched_yield
|
||||
SYSCALL
|
||||
RET
|
||||
|
||||
@ -123,11 +123,11 @@ TEXT runtime·gettime(SB),7,$32
|
||||
MOVL $116, AX // sys_gettimeofday
|
||||
SYSCALL
|
||||
|
||||
MOVQ 8(SP), BX // sec
|
||||
MOVQ 8(SP), BX // sec
|
||||
MOVQ sec+0(FP), DI
|
||||
MOVQ BX, (DI)
|
||||
|
||||
MOVL 16(SP), BX // usec
|
||||
MOVL 16(SP), BX // usec
|
||||
MOVQ usec+8(FP), DI
|
||||
MOVL BX, (DI)
|
||||
RET
|
||||
|
@ -9,19 +9,20 @@
|
||||
extern SigTab runtime·sigtab[];
|
||||
|
||||
extern int64 runtime·rfork_thread(int32 flags, void *stack, M *m, G *g, void (*fn)(void));
|
||||
extern void runtime·sys_sched_yield(void);
|
||||
|
||||
enum
|
||||
{
|
||||
ENOTSUP = 91,
|
||||
};
|
||||
|
||||
// Basic spinlocks using CAS. We can improve on these later.
|
||||
static void
|
||||
lock(Lock *l)
|
||||
{
|
||||
uint32 v;
|
||||
int32 ret;
|
||||
|
||||
for(;;) {
|
||||
if(runtime·cas(&l->key, 0, 1))
|
||||
return;
|
||||
runtime·sys_sched_yield();
|
||||
runtime·osyield();
|
||||
}
|
||||
}
|
||||
|
||||
@ -29,7 +30,6 @@ static void
|
||||
unlock(Lock *l)
|
||||
{
|
||||
uint32 v;
|
||||
int32 ret;
|
||||
|
||||
for (;;) {
|
||||
v = l->key;
|
||||
@ -103,8 +103,8 @@ runtime·newosproc(M *m, G *g, void *stk, void (*fn)(void))
|
||||
|
||||
if((ret = runtime·rfork_thread(flags, stk, m, g, fn)) < 0) {
|
||||
runtime·printf("runtime: failed to create new OS thread (have %d already; errno=%d)\n", runtime·mcount() - 1, -ret);
|
||||
runtime·printf("runtime: is kern.rthreads disabled?\n");
|
||||
|
||||
if (ret == -ENOTSUP)
|
||||
runtime·printf("runtime: is kern.rthreads disabled?\n");
|
||||
runtime·throw("runtime.newosproc");
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user