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* .gdbinit (rb_ps_thread): show ruby level backtrace.

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Usually you can call `rb_ps` to show ruby leve backtraces
  for all living threads.
  Note that it can call with core file like `gcore <pid>`
  and `gdb ruby core.<pid>`.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55548 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2016-06-30 19:36:38 +00:00
parent f2ee22371b
commit 6f10a4af6c
2 changed files with 70 additions and 0 deletions
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62
.gdbinit
View file

@ -413,6 +413,13 @@ document rp_id
Print an ID. Print an ID.
end end
define print_string
set $flags = ((struct RBasic*)($arg0))->flags
printf "%s", (char *)(($flags & RUBY_FL_USER1) ? \
((struct RString*)($arg0))->as.heap.ptr : \
((struct RString*)($arg0))->as.ary)
end
define rp_string define rp_string
set $flags = ((struct RBasic*)($arg0))->flags set $flags = ((struct RBasic*)($arg0))->flags
set print address off set print address off
@ -936,11 +943,66 @@ document rb_ps_vm
Dump all threads in a (rb_vm_t*) and their callstacks Dump all threads in a (rb_vm_t*) and their callstacks
end end
define print_lineno
set $cfp = $arg0
set $iseq = $cfp->iseq
set $pos = $cfp->pc - $iseq->body->iseq_encoded
if $pos != 0
set $pos = $pos - 1
end
set $i = 0
set $size = $iseq->body->line_info_size
set $table = $iseq->body->line_info_table
#printf "size: %d\n", $size
if $size == 0
else
set $i = 1
while $i < $size
#printf "table[%d]: position: %d, line: %d, pos: %d\n", $i, $table[$i].position, $table[$i].line_no, $pos
if $table[$i].position > $pos
loop_break
end
set $i = $i + 1
if $table[$i].position == $pos
loop_break
end
end
printf "%d", $table[$i-1].line_no
end
end
define rb_ps_thread define rb_ps_thread
set $ps_thread = (struct RTypedData*)$arg0 set $ps_thread = (struct RTypedData*)$arg0
set $ps_thread_th = (rb_thread_t*)$ps_thread->data set $ps_thread_th = (rb_thread_t*)$ps_thread->data
printf "* #<Thread:%p rb_thread_t:%p native_thread:%p>\n", \ printf "* #<Thread:%p rb_thread_t:%p native_thread:%p>\n", \
$ps_thread, $ps_thread_th, $ps_thread_th->thread_id $ps_thread, $ps_thread_th, $ps_thread_th->thread_id
set $cfp = $ps_thread_th->cfp
set $cfpend = (rb_control_frame_t *)($ps_thread_th->stack + $ps_thread_th->stack_size)-1
while $cfp < $cfpend
if $cfp->iseq
if $cfp->pc
set $location = $cfp->iseq->body->location
print_string $location.path
printf ":"
print_lineno $cfp
printf ":in `"
print_string $location.label
printf "'\n"
else
printf "???.rb:???:in `???'\n"
end
else
# if ($cfp->flag & VM_FRAME_MAGIC_MASK) == VM_FRAME_MAGIC_CFUNC
if ($cfp->flag & 255) == 0x61
# you can check cfunc by simple `backtrace` command...
printf "cfunc:???:in `???'\n"
else
printf "unknown_frame:???:in `???'\n"
end
end
set $cfp = $cfp + 1
end
end end
# Details: https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/MachineInstructionsTraceWithGDB # Details: https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/MachineInstructionsTraceWithGDB

8
ChangeLog
View file

@ -1,3 +1,11 @@
Fri Jul 1 04:32:52 2016 NARUSE, Yui <naruse@ruby-lang.org>
* .gdbinit (rb_ps_thread): show ruby level backtrace.
Usually you can call `rb_ps` to show ruby leve backtraces
for all living threads.
Note that it can call with core file like `gcore <pid>`
and `gdb ruby core.<pid>`.
Thu Jun 30 19:15:13 2016 Naohisa Goto <ngotogenome@gmail.com> Thu Jun 30 19:15:13 2016 Naohisa Goto <ngotogenome@gmail.com>
* string.c: Fix memory corruptions when using UTF-16/32 strings. * string.c: Fix memory corruptions when using UTF-16/32 strings.