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bug#12247: 24.2.50; Leak in NextStep autorelease


From: Ivan Andrus
Subject: bug#12247: 24.2.50; Leak in NextStep autorelease
Date: Wed, 22 Aug 2012 08:00:24 +0200

Indeed that fixes it.  I never would have guessed it was the cursor.

Thanks,
Ivan

On Aug 21, 2012, at 10:51 PM, Jan Djärv wrote:

> Hello.
> 
> 21 aug 2012 kl. 15:49 skrev Ivan Andrus:
> 
>> Starting from `emacs -Q` with a NextStep build (well, Cocoa actually)
>> run M-x shell RET and every half second the following message is printed
>> to the console:
>> 
>> 2012-08-21 12:26:07.872 Emacs[58915:3403] *** __NSAutoreleaseNoPool(): 
>> Object 0x1007c9200 of class NSEvent autoreleased with no pool in place - 
>> just leaking
>> 
> 
> That would be the blinking cursor.
> I can't reproduce this on 10.7.  However, I have checked in a fix.  Can you 
> test it?
> 
> Thanks,
> 
>       Jan D.
> 
> 
>> Setting the environment variable NSAutoreleaseHaltOnNoPool=YES and
>> running under gdb I get the following backtrace:
>> 
>> 
>> Program received signal SIGTRAP, Trace/breakpoint trap.
>> [Switching to process 59016]
>> 0x00007fff81ab8d61 in __NSAutoreleaseNoPool ()
>> (gdb) thread apply all bt
>> 
>> Thread 5 (process 59016):
>> #0  0x00007fff80bb2a2a in __workq_kernreturn ()
>> #1  0x00007fff80bb2e3c in _pthread_wqthread ()
>> #2  0x00007fff80bb2aa5 in start_wqthread ()
>> 
>> Thread 4 (process 59016):
>> #0  0x00007fff81ab8d61 in __NSAutoreleaseNoPool ()
>> #1  0x00007fff81a03e79 in _CFAutoreleasePoolAddObject ()
>> #2  0x00007fff81a03be6 in -[NSObject(NSObject) autorelease] ()
>> #3  0x00007fff8659265e in +[NSEvent 
>> otherEventWithType:location:modifierFlags:timestamp:windowNumber:context:subtype:data1:data2:]
>>  ()
>> #4  0x000000010018eb6e in ns_send_appdefined (value=<value temporarily 
>> unavailable, due to optimizations>) at nsterm.m:3394
>> #5  0x000000010019079a in -[EmacsApp fd_handler:] (self=<value temporarily 
>> unavailable, due to optimizations>, _cmd=<value temporarily unavailable, due 
>> to optimizations>, unused=<value temporarily unavailable, due to 
>> optimizations>) at nsterm.m:4653
>> #6  0x00007fff82d91114 in __NSThread__main__ ()
>> #7  0x00007fff80bd1fd6 in _pthread_start ()
>> #8  0x00007fff80bd1e89 in thread_start ()
>> 
>> Thread 3 (process 59016):
>> #0  0x00007fff80bb2a2a in __workq_kernreturn ()
>> #1  0x00007fff80bb2e3c in _pthread_wqthread ()
>> #2  0x00007fff80bb2aa5 in start_wqthread ()
>> 
>> Thread 2 (process 59016):
>> #0  0x00007fff80bb1c0a in kevent ()
>> #1  0x00007fff80bb3add in _dispatch_mgr_invoke ()
>> #2  0x00007fff80bb37b4 in _dispatch_queue_invoke ()
>> #3  0x00007fff80bb32de in _dispatch_worker_thread2 ()
>> #4  0x00007fff80bb2c08 in _pthread_wqthread ()
>> #5  0x00007fff80bb2aa5 in start_wqthread ()
>> 
>> Thread 1 (process 59016):
>> #0  0x00007fff80b98d7a in mach_msg_trap ()
>> #1  0x00007fff80b993ed in mach_msg ()
>> #2  0x00007fff819fa902 in __CFRunLoopRun ()
>> #3  0x00007fff819f9d8f in CFRunLoopRunSpecific ()
>> #4  0x00007fff890bb7ee in RunCurrentEventLoopInMode ()
>> #5  0x00007fff890bb5f3 in ReceiveNextEventCommon ()
>> #6  0x00007fff890bb4ac in BlockUntilNextEventMatchingListInMode ()
>> #7  0x00007fff86378eb2 in _DPSNextEvent ()
>> #8  0x00007fff86378801 in -[NSApplication 
>> nextEventMatchingMask:untilDate:inMode:dequeue:] ()
>> #9  0x00007fff8633e68f in -[NSApplication run] ()
>> #10 0x000000010019ac26 in ns_select (nfds=<value temporarily unavailable, 
>> due to optimizations>, readfds=0x7fff5fbfdca0, writefds=0x7fff5fbfdc20, 
>> exceptfds=<value temporarily unavailable, due to optimizations>, 
>> timeout=0x7fff5fbfdd40, sigmask=<value temporarily unavailable, due to 
>> optimizations>) at nsterm.m:3573
>> #11 0x000000010016a27d in wait_reading_process_output (time_limit=<value 
>> temporarily unavailable, due to optimizations>, nsecs=0, read_kbd=-1, 
>> do_display=1, wait_for_cell=4320145466, wait_proc=0x0, just_wait_proc=0) at 
>> process.c:4680
>> #12 0x00000001000b6bf6 in read_char (commandflag=1, nmaps=2, 
>> maps=0x7fff5fbfe190, prev_event=<value temporarily unavailable, due to 
>> optimizations>, used_mouse_menu=0x7fff5fbfe3b4, end_time=0x0) at 
>> keyboard.c:3915
>> #13 0x00000001000b8ca5 in read_key_sequence (keybuf=0x7fff5fbfe470, 
>> bufsize=30, prompt=4320145466, dont_downcase_last=0, 
>> can_return_switch_frame=1, fix_current_buffer=1) at keyboard.c:9372
>> #14 0x00000001000bb0ae in command_loop_1 () at keyboard.c:1510
>> #15 0x0000000100122605 in internal_condition_case (bfun=0x1000bae50 
>> <command_loop_1>, handlers=4320212330, hfun=0x1000b1580 <cmd_error>) at 
>> eval.c:1322
>> #16 0x00000001000af137 in command_loop_2 (ignore=<value temporarily 
>> unavailable, due to optimizations>) at keyboard.c:1204
>> #17 0x000000010012270b in internal_catch (tag=<value temporarily 
>> unavailable, due to optimizations>, func=0x1000af100 <command_loop_2>, 
>> arg=4320145466) at eval.c:1079
>> #18 0x00000001000af7ac in recursive_edit_1 () at keyboard.c:1183
>> #19 0x00000001000af91b in Frecursive_edit () at keyboard.c:868
>> #20 0x00000001000a8df0 in main (argc=2, argv=0x7fff5fbfea48) at emacs.c:1662
>> 
>> 
>> 
>> In GNU Emacs 24.2.50.2 (i386-apple-darwin10.8.0, NS apple-appkit-1038.36)
>> of 2012-08-20 on oroszlan.local
>> Bzr revision: 109700 address@hidden
>> Windowing system distributor `Apple', version 10.3.1038
>> Configured using:
>> `configure '--with-ns''
>> 
>> Important settings:
>> value of $LC_CTYPE: UTF-8
>> locale-coding-system: utf-8-unix
>> default enable-multibyte-characters: t
>> 
>> Major mode: Lisp Interaction
>> 
>> Minor modes in effect:
>> tooltip-mode: t
>> mouse-wheel-mode: t
>> tool-bar-mode: t
>> menu-bar-mode: t
>> file-name-shadow-mode: t
>> global-font-lock-mode: t
>> font-lock-mode: t
>> blink-cursor-mode: t
>> auto-composition-mode: t
>> auto-encryption-mode: t
>> auto-compression-mode: t
>> line-number-mode: t
>> transient-mark-mode: t
>> 
>> Recent input:
>> <help-echo> M-x r e p o <tab> r <tab> <return>
>> 
>> Recent messages:
>> For information about GNU Emacs and the GNU system, type C-h C-a.
>> Making completion list...
>> 
>> Load-path shadows:
>> None found.
>> 
>> Features:
>> (shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
>> mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
>> gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
>> mail-prsvr mail-utils help-mode easymenu time-date tooltip ediff-hook
>> vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset image
>> regexp-opt fringe tabulated-list newcomment lisp-mode register page
>> menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
>> syntax facemenu font-core frame cham georgian utf-8-lang misc-lang
>> vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
>> romanian slovak czech european ethiopic indian cyrillic chinese
>> case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs
>> button faces cus-face files text-properties overlay sha1 md5 base64
>> format env code-pages mule custom widget hashtable-print-readable
>> backquote make-network-process ns multi-tty emacs)
>> 
>> 
> 

-Ivan






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