go signal_plan9 源码
golang signal_plan9 代码
文件路径：/src/runtime/signal_plan9.go
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package runtime
type sigTabT struct {
flags int
name string
}
// Incoming notes are compared against this table using strncmp, so the
// order matters: longer patterns must appear before their prefixes.
// There are _SIG constants in os2_plan9.go for the table index of some
// of these.
//
// If you add entries to this table, you must respect the prefix ordering
// and also update the constant values is os2_plan9.go.
var sigtable = [...]sigTabT{
// Traps that we cannot be recovered.
{_SigThrow, "sys: trap: debug exception"},
{_SigThrow, "sys: trap: invalid opcode"},
// We can recover from some memory errors in runtime·sigpanic.
{_SigPanic, "sys: trap: fault read"}, // SIGRFAULT
{_SigPanic, "sys: trap: fault write"}, // SIGWFAULT
// We can also recover from math errors.
{_SigPanic, "sys: trap: divide error"}, // SIGINTDIV
{_SigPanic, "sys: fp:"}, // SIGFLOAT
// All other traps are normally handled as if they were marked SigThrow.
// We mark them SigPanic here so that debug.SetPanicOnFault will work.
{_SigPanic, "sys: trap:"}, // SIGTRAP
// Writes to a closed pipe can be handled if desired, otherwise they're ignored.
{_SigNotify, "sys: write on closed pipe"},
// Other system notes are more serious and cannot be recovered.
{_SigThrow, "sys:"},
// Issued to all other procs when calling runtime·exit.
{_SigGoExit, "go: exit "},
// Kill is sent by external programs to cause an exit.
{_SigKill, "kill"},
// Interrupts can be handled if desired, otherwise they cause an exit.
{_SigNotify + _SigKill, "interrupt"},
{_SigNotify + _SigKill, "hangup"},
// Alarms can be handled if desired, otherwise they're ignored.
{_SigNotify, "alarm"},
// Aborts can be handled if desired, otherwise they cause a stack trace.
{_SigNotify + _SigThrow, "abort"},
}
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