diff options
Diffstat (limited to 'libgo/go/runtime/os_linux.go')
| -rw-r--r-- | libgo/go/runtime/os_linux.go | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/libgo/go/runtime/os_linux.go b/libgo/go/runtime/os_linux.go index b72872f..1e86446 100644 --- a/libgo/go/runtime/os_linux.go +++ b/libgo/go/runtime/os_linux.go @@ -44,8 +44,6 @@ const ( // Don't sleep longer than ns; ns < 0 means forever. //go:nosplit func futexsleep(addr *uint32, val uint32, ns int64) { - var ts timespec - // Some Linux kernels have a bug where futex of // FUTEX_WAIT returns an internal error code // as an errno. Libpthread ignores the return value @@ -56,19 +54,8 @@ func futexsleep(addr *uint32, val uint32, ns int64) { return } - // It's difficult to live within the no-split stack limits here. - // On ARM and 386, a 64-bit divide invokes a general software routine - // that needs more stack than we can afford. So we use timediv instead. - // But on real 64-bit systems, where words are larger but the stack limit - // is not, even timediv is too heavy, and we really need to use just an - // ordinary machine instruction. - if sys.PtrSize == 8 { - ts.set_sec(ns / 1000000000) - ts.set_nsec(int32(ns % 1000000000)) - } else { - ts.tv_nsec = 0 - ts.set_sec(int64(timediv(ns, 1000000000, (*int32)(unsafe.Pointer(&ts.tv_nsec))))) - } + var ts timespec + ts.setNsec(ns) futex(unsafe.Pointer(addr), _FUTEX_WAIT_PRIVATE, val, unsafe.Pointer(&ts), nil, 0) } |