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Source file src/runtime/signal_plan9.go

Documentation: runtime

     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  string
    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, "sys: trap: debug exception"},
    22  	{_SigThrow, "sys: trap: invalid opcode"},
    23  
    24  	// We can recover from some memory errors in runtime·sigpanic.
    25  	{_SigPanic, "sys: trap: fault read"},  // SIGRFAULT
    26  	{_SigPanic, "sys: trap: fault write"}, // SIGWFAULT
    27  
    28  	// We can also recover from math errors.
    29  	{_SigPanic, "sys: trap: divide error"}, // SIGINTDIV
    30  	{_SigPanic, "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, "sys: trap:"}, // SIGTRAP
    35  
    36  	// Writes to a closed pipe can be handled if desired, otherwise they're ignored.
    37  	{_SigNotify, "sys: write on closed pipe"},
    38  
    39  	// Other system notes are more serious and cannot be recovered.
    40  	{_SigThrow, "sys:"},
    41  
    42  	// Issued to all other procs when calling runtime·exit.
    43  	{_SigGoExit, "go: exit "},
    44  
    45  	// Kill is sent by external programs to cause an exit.
    46  	{_SigKill, "kill"},
    47  
    48  	// Interrupts can be handled if desired, otherwise they cause an exit.
    49  	{_SigNotify + _SigKill, "interrupt"},
    50  	{_SigNotify + _SigKill, "hangup"},
    51  
    52  	// Alarms can be handled if desired, otherwise they're ignored.
    53  	{_SigNotify, "alarm"},
    54  
    55  	// Aborts can be handled if desired, otherwise they cause a stack trace.
    56  	{_SigNotify + _SigThrow, "abort"},
    57  }
    58  

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