c2047754c3
Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
From-SVN: r244456
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime
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import (
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"unsafe"
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)
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type mOS struct {
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unused byte
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}
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//go:noescape
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//extern _umtx_op
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func sys_umtx_op(addr *uint32, mode int32, val uint32, uaddr1 uinptr, ts *umtx_time) int32
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// FreeBSD's umtx_op syscall is effectively the same as Linux's futex, and
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// thus the code is largely similar. See Linux implementation
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// and lock_futex.go for comments.
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//go:nosplit
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func futexsleep(addr *uint32, val uint32, ns int64) {
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systemstack(func() {
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futexsleep1(addr, val, ns)
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})
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}
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func futexsleep1(addr *uint32, val uint32, ns int64) {
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var utp *umtx_time
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if ns >= 0 {
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var ut umtx_time
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ut._clockid = _CLOCK_MONOTONIC
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ut._timeout.set_sec(int64(timediv(ns, 1000000000, (*int32)(unsafe.Pointer(&ut._timeout.tv_nsec)))))
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utp = &ut
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}
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ret := sys_umtx_op(addr, _UMTX_OP_WAIT_UINT_PRIVATE, val, unsafe.Sizeof(*utp), utp)
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if ret >= 0 || ret == -_EINTR {
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return
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}
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print("umtx_wait addr=", addr, " val=", val, " ret=", ret, "\n")
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*(*int32)(unsafe.Pointer(uintptr(0x1005))) = 0x1005
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}
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//go:nosplit
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func futexwakeup(addr *uint32, cnt uint32) {
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ret := sys_umtx_op(addr, _UMTX_OP_WAKE_PRIVATE, cnt, 0, nil)
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if ret >= 0 {
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return
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}
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systemstack(func() {
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print("umtx_wake_addr=", addr, " ret=", ret, "\n")
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})
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}
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