root/src/pkg/runtime/signals_plan9.h

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// 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.

#define N SigNotify
#define K SigKill
#define T SigThrow
#define P SigPanic
#define E SigGoExit

// Incoming notes are compared against this table using strncmp, so the
// order matters: longer patterns must appear before their prefixes.
// There are #defined SIG constants in os_plan9.h 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 os_plan9.h.

SigTab runtime·sigtab[] = {
        // Traps that we cannot be recovered.
        T,      "sys: trap: debug exception",
        T,      "sys: trap: invalid opcode",

        // We can recover from some memory errors in runtime·sigpanic.
        P,      "sys: trap: fault read addr",   // SIGRFAULT
        P,      "sys: trap: fault write addr",  // SIGWFAULT

        // We can also recover from math errors.
        P,      "sys: trap: divide error",      // SIGINTDIV
        P,      "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.
        P,      "sys: trap:",   // SIGTRAP

        // Writes to a closed pipe can be handled if desired, otherwise they're ignored.
        N,      "sys: write on closed pipe",

        // Other system notes are more serious and cannot be recovered.
        T,      "sys:",

        // Issued to all other procs when calling runtime·exit.
        E,      "go: exit ",

        // Kill is sent by external programs to cause an exit.
        K,      "kill",

        // Interrupts can be handled if desired, otherwise they cause an exit.
        N+K,    "interrupt",
        N+K,    "hangup",

        // Alarms can be handled if desired, otherwise they're ignored.
        N,      "alarm",
};

#undef N
#undef K
#undef T
#undef P
#undef E

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