35 lines
1.3 KiB
Go
35 lines
1.3 KiB
Go
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// Copyright 2009 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 syscall
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// AllThreadsSyscall performs a syscall on each OS thread of the Go
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// runtime. It first invokes the syscall on one thread. Should that
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// invocation fail, it returns immediately with the error status.
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// Otherwise, it invokes the syscall on all of the remaining threads
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// in parallel. It will terminate the program if it observes any
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// invoked syscall's return value differs from that of the first
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// invocation.
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//
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// AllThreadsSyscall is intended for emulating simultaneous
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// process-wide state changes that require consistently modifying
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// per-thread state of the Go runtime.
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//
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// AllThreadsSyscall is unaware of any threads that are launched
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// explicitly by cgo linked code, so the function always returns
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// ENOTSUP in binaries that use cgo.
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//go:uintptrescapes
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func AllThreadsSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno) {
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return minus1, minus1, ENOTSUP
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}
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// AllThreadsSyscall6 is like AllThreadsSyscall, but extended to six
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// arguments.
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//go:uintptrescapes
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func AllThreadsSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) {
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return minus1, minus1, ENOTSUP
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}
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const minus1 = ^uintptr(0)
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