gdb/testsuite/gdb.threads/pthreads.exp

   1 # Copyright (C) 1996-2022 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18 # This test requires sending ^C to interrupt the running target.
  19 if [target_info exists gdb,nointerrupts] {
  20     verbose "Skipping pthreads.exp because of nointerrupts."
  21     return
  22 }
  23
  24 standard_testfile
  25
  26 # regexp for "horizontal" text (i.e. doesn't include newline or
  27 # carriage return)
  28 set horiz "\[^\n\r\]*"
  29
  30 if [istarget "*-*-linux"] then {
  31     set target_cflags "-D_MIT_POSIX_THREADS"
  32 } else {
  33     set target_cflags ""
  34 }
  35
  36 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
  37     return -1
  38 }
  39
  40 clean_restart ${binfile}
  41
  42 gdb_test_no_output "set print sevenbit-strings"
  43 #gdb_test_no_output "set print address off"
  44 gdb_test_no_output "set width 0"
  45
  46 # We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
  47 # run the program and gdb starts saving and restoring tty states.
  48 gdb_test "shell stty intr '^C'" ".*"
  49
  50 proc all_threads_running {} {
  51     global gdb_prompt
  52     global srcfile
  53
  54     # Reset all the counters to zero.
  55     gdb_test_no_output "set var common_routine::hits=0"
  56     gdb_test_no_output "set var common_routine::from_thread1=0"
  57     gdb_test_no_output "set var common_routine::from_thread2=0"
  58     gdb_test_no_output "set var common_routine::from_main=0"
  59     gdb_test_no_output "set var common_routine::full_coverage=0"
  60
  61     # Disable all breakpoints.
  62     gdb_test_no_output "disable"
  63
  64     # Set up a breakpoint that will cause us to stop when we have
  65     # been called 15 times.  This should be plenty of time to allow
  66     # every thread to run at least once, since each thread sleeps for
  67     # one second between calls to common_routine.
  68     gdb_test "tbreak common_routine if hits >= 15" ".*"
  69
  70     # Start all the threads running again and wait for the inferior
  71     # to stop.  Since no other breakpoints are set at this time
  72     # we should stop only when we have been previously called 15 times.
  73
  74     set return_me 1
  75
  76     gdb_test_multiple "continue" "continue until common routine run 15 times" {
  77         -re "Continuing.*common_routine.*at.*$srcfile.*$gdb_prompt $" {
  78             set return_me 0
  79         }
  80     }
  81
  82     if { $return_me == 1 } then {
  83         return 0
  84     }
  85
  86     # Check that we stopped when we actually expected to stop, by
  87     # verifying that there have been 15 previous hits.
  88
  89     # NOTE: Because of synchronization behavior, it is possible for
  90     # more than one thread to increment "hits" between one breakpoint
  91     # trap and the next.  So stopping after 16 or 17 hits should be
  92     # considered acceptable.
  93
  94     gdb_test_multiple "p common_routine::hits" \
  95         "stopped before calling common_routine 15 times" {
  96             -re ".*= 15\r\n$gdb_prompt $" {
  97                 pass "stopped before calling common_routine 15 times"
  98             }
  99             -re ".*= 16\r\n$gdb_prompt $" {
 100                 pass "stopped before calling common_routine 15 times (16 times)"
 101             }
 102             -re ".*= 17\r\n$gdb_prompt $" {
 103                 pass "stopped before calling common_routine 15 times (17 times)"
 104             }
 105         }
 106
 107     # Also check that all of the threads have run, which will only be true
 108     # if the full_coverage variable is set.
 109
 110     set return_me 1
 111     gdb_test_multiple "p common_routine::full_coverage" \
 112         "some threads didn't run" {
 113             -re ".* = 1.*$gdb_prompt $" {
 114             }
 115             -re ".* = 0.*$gdb_prompt $" {
 116                 fail "some threads didn't run"
 117                 set return_me 0
 118             }
 119         }
 120
 121     # Looks fine, return success.
 122     return $return_me
 123 }
 124
 125 proc test_startup {} {
 126     global srcdir srcfile gdb_prompt expect_out
 127     global horiz
 128     global main_id thread1_id thread2_id
 129
 130     # We should be able to do an info threads before starting any others.
 131     set return_me 1
 132     gdb_test_multiple "info threads" "info threads" {
 133         -re ".*Thread.*main.*$gdb_prompt $" {
 134             pass "info threads"
 135             set return_me 0
 136         }
 137         -re "\r\n$gdb_prompt $" {
 138             unsupported "gdb does not support pthreads for this machine"
 139         }
 140     }
 141
 142     if { $return_me == 1 } then {
 143         return 0
 144     }
 145
 146     # Extract the thread id number of main thread from "info threads" output.
 147     gdb_test_multiple "info threads" "get main thread id" {
 148         -re "(\[0-9\]+)(${horiz}Thread${horiz}main.*)($gdb_prompt $)" {
 149         }
 150     }
 151
 152     set main_id $expect_out(1,string)
 153
 154     # Check that we can continue and create the first thread.
 155     gdb_test "break thread1" "Breakpoint .* file .*$srcfile.*"
 156     gdb_test "continue" \
 157             "Continuing.*Breakpoint .*, thread1 \\(arg=0xfeedface\\).*at.*$srcfile.*" \
 158             "Continue to creation of first thread"
 159     gdb_test_no_output "disable"
 160
 161     # Extract the thread id number of thread 1 from "info threads" output.
 162     gdb_test_multiple "info threads" "get thread 1 id" {
 163         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread1.*)($gdb_prompt $)" {
 164         }
 165     }
 166
 167     set thread1_id $expect_out(1,string)
 168
 169     # Check that we can continue and create the second thread,
 170     # ignoring the first thread for the moment.
 171     gdb_test "break thread2" "Breakpoint .* file .*$srcfile.*"
 172     gdb_test "continue" \
 173             "Continuing.*Breakpoint .*, thread2 \\(arg=0xdeadbeef\\).*at.*$srcfile.*" \
 174             "continue to creation of second thread"
 175
 176     # Extract the thread id number of thread 2 from "info threads" output.
 177     gdb_test_multiple "info threads" "get thread 2 id" {
 178         -re "(\[0-9\]+)(${horiz}Thread${horiz}thread2.*)($gdb_prompt $)" {
 179         }
 180     }
 181
 182     set thread2_id $expect_out(1,string)
 183
 184     return 1
 185 }
 186
 187 proc check_control_c {} {
 188     global gdb_prompt
 189
 190     # Verify that all threads are running.
 191     with_test_prefix "after startup" {
 192         if [all_threads_running] then {
 193             pass "all threads running after startup"
 194         }
 195     }
 196
 197     # Send a continue followed by ^C to the process to stop it.
 198     gdb_test_multiple "continue" "continue with all threads running" {
 199         -re "Continuing." {
 200             pass "continue with all threads running"
 201         }
 202     }
 203     after 2000
 204     send_gdb "\003"
 205     set description "Stopped with a ^C"
 206     gdb_expect {
 207         -re "Thread .* received signal SIGINT.*$gdb_prompt $" {
 208             pass $description
 209         }
 210         -re "Quit.*$gdb_prompt $" {
 211             pass $description
 212         }
 213         timeout {
 214             fail "$description (timeout)"
 215             return 1
 216         }
 217     }
 218     gdb_test "bt" ".*"
 219
 220     # Verify that all threads can be run again after a ^C stop.
 221     with_test_prefix "after continue" {
 222         if [all_threads_running] then {
 223             pass "all threads running after continuing from ^C stop"
 224         }
 225     }
 226     return 0
 227 }
 228
 229 proc check_backtraces {} {
 230     global gdb_prompt main_id thread1_id thread2_id
 231
 232     # Check that the "thread apply N backtrace" command works
 233
 234     gdb_test "thread apply $main_id backtrace" \
 235             ".* in main \\(argc=.*, argv=.*\\).*" \
 236             "check backtrace from main thread"
 237     gdb_test "thread apply $thread1_id backtrace" \
 238             ".* in thread1 \\(arg=0xfeedface\\).*" \
 239             "check backtrace from thread 1"
 240     gdb_test "thread apply $thread2_id backtrace" \
 241             ".* in thread2 \\(arg=0xdeadbeef\\).*" \
 242             "check backtrace from thread 2"
 243
 244     # Check that we can apply the backtrace command to all
 245     # three threads with a single gdb command
 246
 247     gdb_test "thread apply $main_id $thread1_id $thread2_id bt" \
 248             ".* in main .* in thread1 .* in thread2.*" \
 249             "apply backtrace command to all three threads"
 250
 251     # Check that we can do thread specific backtraces
 252     # This also tests that we can do thread specific breakpoints.
 253
 254     gdb_test "break common_routine thread $thread2_id" \
 255             "Breakpoint .* at 0x.* file .* line .*" \
 256             "set break at common_routine in thread 2"
 257
 258     gdb_test_multiple "continue" "continue to bkpt at common_routine in thread 2" {
 259         -re "Breakpoint .* common_routine \\(arg=2\\).*$gdb_prompt $" {
 260             pass "continue to bkpt at common_routine in thread 2"
 261             gdb_test "backtrace" \
 262                 "#0.*common_routine \\(arg=2\\).*#1.*thread2.*" \
 263                 "backtrace from thread 2 bkpt in common_routine"
 264         }
 265         -re "Breakpoint .* common_routine \\(arg=0\\).*$gdb_prompt $" {
 266             fail "continue to bkpt at common_routine in thread 2 (arg=0)"
 267         }
 268         -re "Breakpoint .* common_routine \\(arg=1\\).*$gdb_prompt $" {
 269             fail "continue to bkpt at common_routine in thread 2 (arg=1)"
 270         }
 271     }
 272 }
 273
 274 proc check_qcs {} {
 275     set any "\[^\r\n\]*"
 276     set ws "\[ \t\]\+"
 277     set number "\[0-9]\+"
 278
 279     # Check -c (continue) and -s (silently continue) flags.
 280     gdb_test "thread apply 2-3 p notfound" \
 281         [multi_line \
 282              "" \
 283              "Thread 2 ${any}" \
 284              "No symbol \\\"notfound\\\" in current context." \
 285             ] \
 286         "run a failing command that aborts thread apply"
 287
 288     gdb_test "thread apply 2-3 -c p notfound" \
 289         [multi_line \
 290              "" \
 291              "Thread 2 ${any}" \
 292              "No symbol \\\"notfound\\\" in current context." \
 293              "" \
 294              "Thread 3 ${any}" \
 295              "No symbol \\\"notfound\\\" in current context." \
 296             ] \
 297         "run a failing command, -c to continue"
 298
 299     with_test_prefix "silent flag" {
 300         foreach_with_prefix cmd_and_args {
 301             "thread apply all -s frame apply all -s"
 302             "tfaas"
 303             "taas faas"} {
 304                 set cmd "$cmd_and_args p i"
 305                 gdb_test $cmd \
 306                     [multi_line \
 307                          "" \
 308                          "Thread 3 ${any}" \
 309                          "#${number}${ws}${any} in thread2 ${any}" \
 310                          "\\\$\[0-9]+ = ${number}${any}" \
 311                          "" \
 312                          "Thread 2 ${any}" \
 313                          "#${number}${ws}${any} in thread1 ${any}" \
 314                          "\\\$\[0-9]+ = ${number}${any}" \
 315                         ] \
 316                     "run a failing command except in one frame of thread 2,3, -s to silently continue"
 317             }
 318     }
 319
 320     # Check quietness.
 321     gdb_test "thread apply all -s -q frame apply all -s p i" \
 322         [multi_line \
 323              "#${number}${ws}${any} in thread2 ${any}" \
 324              "\\\$\[0-9]+ = ${number}${any}" \
 325              "#${number}${ws}${any} in thread1 ${any}" \
 326              "\\\$\[0-9]+ = ${number}${any}" \
 327             ] \
 328         "run a failing command except in one frame of thread 2,3, -s to silently continue.  Do not show thread information"
 329
 330     gdb_test "thread apply all -s -q frame apply all -s -q p i" \
 331         [multi_line \
 332              "\\\$\[0-9]+ = ${number}${any}" \
 333              "\\\$\[0-9]+ = ${number}${any}" \
 334             ] \
 335         "run a failing command except in one frame of thread 2,3, -s to silently continue.  Do not show thread and frame info"
 336
 337     # Check invalid flag combinations and errors.
 338     gdb_test "thread apply all -c -s p 1" \
 339         "thread apply all: -c and -s are mutually exclusive" \
 340         "check -c and -s cannot be used simultaneously"
 341     gdb_test "taas" "Please specify a command to apply on all threads" \
 342         "missing command for taas"
 343     gdb_test "tfaas" "Please specify a command to apply on all frames of all threads" \
 344         "missing command for tfaas"
 345
 346 }
 347
 348 if [runto_main] then {
 349     if [test_startup] then {
 350         if [check_control_c] then {
 351             warning "Could not stop child with ^C; skipping rest of tests.\n"
 352             return
 353         }
 354         check_backtraces
 355         check_qcs
 356     }
 357 }