github.com/reiver/go@v0.0.0-20150109200633-1d0c7792f172/src/runtime/signal_plan9.go (about)

     1  // Copyright 2011 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package runtime
     6  
     7  type sigTabT struct {
     8  	flags int
     9  	name  []byte
    10  }
    11  
    12  // Incoming notes are compared against this table using strncmp, so the
    13  // order matters: longer patterns must appear before their prefixes.
    14  // There are _SIG constants in os2_plan9.go for the table index of some
    15  // of these.
    16  //
    17  // If you add entries to this table, you must respect the prefix ordering
    18  // and also update the constant values is os2_plan9.go.
    19  var sigtable = [...]sigTabT{
    20  	// Traps that we cannot be recovered.
    21  	{_SigThrow, []byte("sys: trap: debug exception")},
    22  	{_SigThrow, []byte("sys: trap: invalid opcode")},
    23  
    24  	// We can recover from some memory errors in runtime·sigpanic.
    25  	{_SigPanic, []byte("sys: trap: fault read addr")},  // SIGRFAULT
    26  	{_SigPanic, []byte("sys: trap: fault write addr")}, // SIGWFAULT
    27  
    28  	// We can also recover from math errors.
    29  	{_SigPanic, []byte("sys: trap: divide error")}, // SIGINTDIV
    30  	{_SigPanic, []byte("sys: fp:")},                // SIGFLOAT
    31  
    32  	// All other traps are normally handled as if they were marked SigThrow.
    33  	// We mark them SigPanic here so that debug.SetPanicOnFault will work.
    34  	{_SigPanic, []byte("sys: trap:")}, // SIGTRAP
    35  
    36  	// Writes to a closed pipe can be handled if desired, otherwise they're ignored.
    37  	{_SigNotify, []byte("sys: write on closed pipe")},
    38  
    39  	// Other system notes are more serious and cannot be recovered.
    40  	{_SigThrow, []byte("sys:")},
    41  
    42  	// Issued to all other procs when calling runtime·exit.
    43  	{_SigGoExit, []byte("go: exit ")},
    44  
    45  	// Kill is sent by external programs to cause an exit.
    46  	{_SigKill, []byte("kill")},
    47  
    48  	// Interrupts can be handled if desired, otherwise they cause an exit.
    49  	{_SigNotify + _SigKill, []byte("interrupt")},
    50  	{_SigNotify + _SigKill, []byte("hangup")},
    51  
    52  	// Alarms can be handled if desired, otherwise they're ignored.
    53  	{_SigNotify, []byte("alarm")},
    54  }