gdb/unittests/ptid-selftests.c

   1 /* Self tests for ptid_t for GDB, the GNU debugger.
   2
   3    Copyright (C) 2017-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "gdbsupport/ptid.h"
  22 #include <type_traits>
  23
  24 namespace selftests {
  25 namespace ptid {
  26
  27 /* Check that the ptid_t class is POD.
  28
  29    This is a requirement for as long as we have ptids embedded in
  30    structures allocated with malloc. */
  31
  32 static_assert (std::is_pod<ptid_t>::value, "ptid_t is POD");
  33
  34 /* We want to avoid implicit conversion from int to ptid_t.  */
  35
  36 static_assert (!std::is_convertible<int, ptid_t>::value,
  37                "constructor is explicit");
  38
  39 /* Build some useful ptids.  */
  40
  41 static constexpr ptid_t pid = ptid_t (1);
  42 static constexpr ptid_t lwp = ptid_t (1, 2, 0);
  43 static constexpr ptid_t tid = ptid_t (1, 0, 2);
  44 static constexpr ptid_t both = ptid_t (1, 2, 2);
  45
  46 /* Build some constexpr version of null_ptid and minus_one_ptid to use in
  47    static_assert.  Once the real ones are made constexpr, we can get rid of
  48    these.  */
  49
  50 static constexpr ptid_t null = ptid_t::make_null ();
  51 static constexpr ptid_t minus_one = ptid_t::make_minus_one ();
  52
  53 /* Verify pid.  */
  54
  55 static_assert (pid.pid () == 1, "pid's pid is right");
  56 static_assert (lwp.pid () == 1, "lwp's pid is right");
  57 static_assert (tid.pid () == 1, "tid's pid is right");
  58 static_assert (both.pid () == 1, "both's pid is right");
  59
  60 /* Verify lwp_p.  */
  61
  62 static_assert (!pid.lwp_p (), "pid's lwp_p is right");
  63 static_assert (lwp.lwp_p (), "lwp's lwp_p is right");
  64 static_assert (!tid.lwp_p (), "tid's lwp_p is right");
  65 static_assert (both.lwp_p (), "both's lwp_p is right");
  66
  67 /* Verify lwp.  */
  68
  69 static_assert (pid.lwp () == 0, "pid's lwp is right");
  70 static_assert (lwp.lwp () == 2, "lwp's lwp is right");
  71 static_assert (tid.lwp () == 0, "tid's lwp is right");
  72 static_assert (both.lwp () == 2, "both's lwp is right");
  73
  74 /* Verify tid_p.  */
  75
  76 static_assert (!pid.tid_p (), "pid's tid_p is right");
  77 static_assert (!lwp.tid_p (), "lwp's tid_p is right");
  78 static_assert (tid.tid_p (), "tid's tid_p is right");
  79 static_assert (both.tid_p (), "both's tid_p is right");
  80
  81 /* Verify tid.  */
  82
  83 static_assert (pid.tid () == 0, "pid's tid is right");
  84 static_assert (lwp.tid () == 0, "lwp's tid is right");
  85 static_assert (tid.tid () == 2, "tid's tid is right");
  86 static_assert (both.tid () == 2, "both's tid is right");
  87
  88 /* Verify is_pid.  */
  89
  90 static_assert (pid.is_pid (), "pid is a pid");
  91 static_assert (!lwp.is_pid (), "lwp isn't a pid");
  92 static_assert (!tid.is_pid (), "tid isn't a pid");
  93 static_assert (!both.is_pid (), "both isn't a pid");
  94 static_assert (!null.is_pid (), "null ptid isn't a pid");
  95 static_assert (!minus_one.is_pid (), "minus one ptid isn't a pid");
  96
  97 /* Verify operator ==.  */
  98
  99 static_assert (pid == ptid_t (1, 0, 0), "pid operator== is right");
 100 static_assert (lwp == ptid_t (1, 2, 0), "lwp operator== is right");
 101 static_assert (tid == ptid_t (1, 0, 2), "tid operator== is right");
 102 static_assert (both == ptid_t (1, 2, 2), "both operator== is right");
 103
 104 /* Verify operator !=.  */
 105
 106 static_assert (pid != ptid_t (2, 0, 0), "pid isn't equal to a different pid");
 107 static_assert (pid != lwp, "pid isn't equal to one of its thread");
 108 static_assert (lwp != tid, "lwp isn't equal to tid");
 109 static_assert (both != lwp, "both isn't equal to lwp");
 110 static_assert (both != tid, "both isn't equal to tid");
 111
 112 /* Verify matches against minus_one.  */
 113
 114 static_assert (pid.matches (minus_one), "pid matches minus one");
 115 static_assert (lwp.matches (minus_one), "lwp matches minus one");
 116 static_assert (tid.matches (minus_one), "tid matches minus one");
 117 static_assert (both.matches (minus_one), "both matches minus one");
 118
 119 /* Verify matches against pid.  */
 120
 121 static_assert (pid.matches (pid), "pid matches pid");
 122 static_assert (lwp.matches (pid), "lwp matches pid");
 123 static_assert (tid.matches (pid), "tid matches pid");
 124 static_assert (both.matches (pid), "both matches pid");
 125 static_assert (!ptid_t (2, 0, 0).matches (pid), "other pid doesn't match pid");
 126 static_assert (!ptid_t (2, 2, 0).matches (pid), "other lwp doesn't match pid");
 127 static_assert (!ptid_t (2, 0, 2).matches (pid), "other tid doesn't match pid");
 128 static_assert (!ptid_t (2, 2, 2).matches (pid), "other both doesn't match pid");
 129
 130 /* Verify matches against exact matches.  */
 131
 132 static_assert (!pid.matches (lwp), "pid doesn't match lwp");
 133 static_assert (lwp.matches (lwp), "lwp matches lwp");
 134 static_assert (!tid.matches (lwp), "tid doesn't match lwp");
 135 static_assert (!both.matches (lwp), "both doesn't match lwp");
 136 static_assert (!ptid_t (2, 2, 0).matches (lwp), "other lwp doesn't match lwp");
 137
 138 static_assert (!pid.matches (tid), "pid doesn't match tid");
 139 static_assert (!lwp.matches (tid), "lwp doesn't match tid");
 140 static_assert (tid.matches (tid), "tid matches tid");
 141 static_assert (!both.matches (tid), "both doesn't match tid");
 142 static_assert (!ptid_t (2, 0, 2).matches (tid), "other tid doesn't match tid");
 143
 144 static_assert (!pid.matches (both), "pid doesn't match both");
 145 static_assert (!lwp.matches (both), "lwp doesn't match both");
 146 static_assert (!tid.matches (both), "tid doesn't match both");
 147 static_assert (both.matches (both), "both matches both");
 148 static_assert (!ptid_t (2, 2, 2).matches (both),
 149                "other both doesn't match both");
 150
 151
 152 } /* namespace ptid */
 153 } /* namespace selftests */