gdb/testsuite/gdb.threads/watchthreads.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2004, 2007 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19 # Check that GDB can support multiple watchpoints across threads.
  20
  21 if $tracelevel {
  22     strace $tracelevel
  23 }
  24
  25 set prms_id 0
  26 set bug_id 0
  27
  28 # This test verifies that a watchpoint is detected in the proper thread
  29 # so the test is only meaningful on a system with hardware watchpoints.
  30 if [target_info exists gdb,no_hardware_watchpoints] {
  31     return 0;
  32 }
  33
  34 set testfile "watchthreads"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
  38     return -1
  39 }
  40
  41 gdb_exit
  42 gdb_start
  43 gdb_reinitialize_dir $srcdir/$subdir
  44 gdb_load ${binfile}
  45
  46 gdb_test "set can-use-hw-watchpoints 1" "" ""
  47
  48 #
  49 # Run to `main' where we begin our tests.
  50 #
  51
  52 if ![runto_main] then {
  53     gdb_suppress_tests
  54 }
  55
  56 set args_0 0
  57 set args_1 0
  58
  59 # Watch values that will be modified by distinct threads.
  60 gdb_test "watch args\[0\]" "Hardware watchpoint 2: args\\\[0\\\]"
  61 gdb_test "watch args\[1\]" "Hardware watchpoint 3: args\\\[1\\\]"
  62
  63 set init_line [expr [gdb_get_line_number "Init value"]+1]
  64 set inc_line [gdb_get_line_number "Loop increment"]
  65
  66 # Loop and continue to allow both watchpoints to be triggered.
  67 for {set i 0} {$i < 30} {incr i} {
  68   set test_flag 0
  69   gdb_test_multiple "continue" "threaded watch loop" {
  70     -re "Hardware watchpoint 2: args\\\[0\\\].*Old value = 0.*New value = 1.*main \\\(\\\) at .*watchthreads.c:$init_line.*$gdb_prompt $"
  71        { set args_0 1; set test_flag 1 }
  72     -re "Hardware watchpoint 3: args\\\[1\\\].*Old value = 0.*New value = 1.*main \\\(\\\) at .*watchthreads.c:$init_line.*$gdb_prompt $"
  73        { set args_1 1; set test_flag 1 }
  74     -re "Hardware watchpoint 2: args\\\[0\\\].*Old value = $args_0.*New value = [expr $args_0+1].*in thread_function \\\(arg=0x0\\\) at .*watchthreads.c:$inc_line.*$gdb_prompt $"
  75        { set args_0 [expr $args_0+1]; set test_flag 1 }
  76     -re "Hardware watchpoint 3: args\\\[1\\\].*Old value = $args_1.*New value = [expr $args_1+1].*in thread_function \\\(arg=0x1\\\) at .*watchthreads.c:$inc_line.*$gdb_prompt $"
  77        { set args_1 [expr $args_1+1]; set test_flag 1 }
  78   }
  79   # If we fail above, don't bother continuing loop
  80   if { $test_flag == 0 } {
  81     set i 30;
  82   }
  83 }
  84
  85 # Print success message if loop succeeded.
  86 if { $test_flag == 1 } {
  87   pass "threaded watch loop"
  88 }
  89
  90 # Verify that we hit first watchpoint in main thread.
  91 set message "first watchpoint on args\[0\] hit"
  92 if { $args_0 > 0 } {
  93   pass $message
  94 } else {
  95   fail $message
  96 }
  97
  98 # Verify that we hit second watchpoint in main thread.
  99 set message "first watchpoint on args\[1\] hit"
 100 if { $args_1 > 0 } {
 101   pass $message
 102 } else {
 103   fail $message
 104 }
 105
 106 # Verify that we hit first watchpoint in child thread.
 107 set message "watchpoint on args\[0\] hit in thread"
 108 if { $args_0 > 1 } {
 109   pass $message
 110 } else {
 111   fail $message
 112 }
 113
 114 # Verify that we hit second watchpoint in child thread.
 115 set message "watchpoint on args\[1\] hit in thread"
 116 if { $args_1 > 1 } {
 117   pass $message
 118 } else {
 119   fail $message
 120 }
 121
 122 # Verify that all watchpoint hits are accounted for.
 123 set message "combination of threaded watchpoints = 30"
 124 if { [expr $args_0+$args_1] == 30 } {
 125   pass $message
 126 } else {
 127   fail $message
 128 }