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Diffstat (limited to 'src/ChangeLog')
| -rw-r--r-- | src/ChangeLog | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index a6fabdccdea..1a91eb0f1a3 100644 --- a/src/ChangeLog +++ b/src/ChangeLog | |||
| @@ -1,3 +1,137 @@ | |||
| 1 | 2012-12-03 Paul Eggert <eggert@cs.ucla.edu> | ||
| 2 | |||
| 3 | Don't let call-process be a zombie factory (Bug#12980). | ||
| 4 | Fixing this bug required some cleanup of the signal-handling code. | ||
| 5 | As a side effect, this change also fixes a longstanding rare race | ||
| 6 | condition whereby Emacs could mistakenly kill unrelated processes, | ||
| 7 | and it fixes a bug where a second C-g does not kill a recalcitrant | ||
| 8 | synchronous process in GNU/Linux and similar platforms. | ||
| 9 | The patch should also fix the last vestiges of Bug#9488, | ||
| 10 | a bug which has mostly been fixed on the trunk by other changes. | ||
| 11 | * callproc.c, process.h (synch_process_alive, synch_process_death) | ||
| 12 | (synch_process_termsig, sync_process_retcode): | ||
| 13 | Remove. All uses removed, to simplify analysis and so that | ||
| 14 | less consing is done inside critical sections. | ||
| 15 | * callproc.c (call_process_exited): Remove. All uses replaced | ||
| 16 | with !synch_process_pid. | ||
| 17 | * callproc.c (synch_process_pid, synch_process_fd): New static vars. | ||
| 18 | These take the role of what used to be in unwind-protect arg. | ||
| 19 | All uses changed. | ||
| 20 | (block_child_signal, unblock_child_signal): | ||
| 21 | New functions, to avoid races that could kill innocent-victim processes. | ||
| 22 | (call_process_kill, call_process_cleanup, Fcall_process): Use them. | ||
| 23 | (call_process_kill): Record killed processes as deleted, so that | ||
| 24 | zombies do not clutter up the system. Do this inside a critical | ||
| 25 | section, to avoid a race that would allow the clutter. | ||
| 26 | (call_process_cleanup): Fix code so that the second C-g works again | ||
| 27 | on common platforms such as GNU/Linux. | ||
| 28 | (Fcall_process): Create the child process in a critical section, | ||
| 29 | to fix a race condition. If creating an asynchronous process, | ||
| 30 | record it as deleted so that zombies do not clutter up the system. | ||
| 31 | Do unwind-protect for WINDOWSNT too, as that's simpler in the | ||
| 32 | light of these changes. Omit unnecessary call to emacs_close | ||
| 33 | before failure, as the unwind-protect code does that. | ||
| 34 | * callproc.c (call_process_cleanup): | ||
| 35 | * w32proc.c (waitpid): Simplify now that synch_process_alive is gone. | ||
| 36 | * process.c (record_deleted_pid): New function, containing | ||
| 37 | code refactored out of Fdelete_process. | ||
| 38 | (Fdelete_process): Use it. | ||
| 39 | (process_status_retrieved): Remove. All callers changed to use | ||
| 40 | child_status_change. | ||
| 41 | (record_child_status_change): Remove, folding its contents into ... | ||
| 42 | (handle_child_signal): ... this signal handler. Now, this | ||
| 43 | function is purely a handler for SIGCHLD, and is not called after | ||
| 44 | a synchronous waitpid returns; the synchronous code is moved to | ||
| 45 | wait_for_termination. There is no need to worry about reaping | ||
| 46 | more than one child now. | ||
| 47 | * sysdep.c (get_child_status, child_status_changed): New functions. | ||
| 48 | (wait_for_termination): Now takes int * status and bool | ||
| 49 | interruptible arguments, too. Do not record child status change; | ||
| 50 | that's now the caller's responsibility. All callers changed. | ||
| 51 | Reimplement in terms of get_child_status. | ||
| 52 | (wait_for_termination_1, interruptible_wait_for_termination): | ||
| 53 | Remove. All callers changed to use wait_for_termination. | ||
| 54 | * syswait.h: Include <stdbool.h>, for bool. | ||
| 55 | (record_child_status_change, interruptible_wait_for_termination): | ||
| 56 | Remove decls. | ||
| 57 | (record_deleted_pid, child_status_changed): New decls. | ||
| 58 | (wait_for_termination): Adjust to API changes noted above. | ||
| 59 | |||
| 60 | * bytecode.c, lisp.h (Qbytecode): Remove. | ||
| 61 | No longer needed after 2012-11-20 interactive-p changes. | ||
| 62 | |||
| 63 | 2012-12-03 Eli Zaretskii <eliz@gnu.org> | ||
| 64 | |||
| 65 | * xdisp.c (redisplay_window): If the cursor is visible, but inside | ||
| 66 | the scroll margin, move point outside the margin. (Bug#13055) | ||
| 67 | |||
| 68 | 2012-12-03 Jan Djärv <jan.h.d@swipnet.se> | ||
| 69 | |||
| 70 | * gtkutil.c (my_log_handler): New function. | ||
| 71 | (xg_set_geometry): Set log handler to my_log_handler (Bug#11177). | ||
| 72 | |||
| 73 | 2012-12-03 Dmitry Antipov <dmantipov@yandex.ru> | ||
| 74 | |||
| 75 | * lisp.h (modify_region): Rename to... | ||
| 76 | (modify_region_1): ...new prototype. | ||
| 77 | * textprop.c (modify_region): Now static. Adjust users. | ||
| 78 | * insdel.c (modify_region): Rename to... | ||
| 79 | (modify_region_1): ...new function to work with current buffer. | ||
| 80 | Adjust comment and users. Use true and false for booleans. | ||
| 81 | |||
| 82 | 2012-12-03 Dmitry Antipov <dmantipov@yandex.ru> | ||
| 83 | |||
| 84 | * alloc.c (free_save_value): New function. | ||
| 85 | (safe_alloca_unwind): Use it. | ||
| 86 | * lisp.h (free_save_value): New prototype. | ||
| 87 | * editfns.c (save_excursion_save): Use Lisp_Misc_Save_Value. | ||
| 88 | Add comment. | ||
| 89 | (save_excursion_restore): Adjust to match saved data structure. | ||
| 90 | Use free_save_value to offload some work from GC. Drop obsolete | ||
| 91 | #if 0 code. | ||
| 92 | |||
| 93 | 2012-12-03 Chong Yidong <cyd@gnu.org> | ||
| 94 | |||
| 95 | * fileio.c (Vauto_save_list_file_name): Doc fix. | ||
| 96 | |||
| 97 | 2012-12-03 Fabrice Popineau <fabrice.popineau@gmail.com> | ||
| 98 | |||
| 99 | * w32fns.c: Remove prototype of atof. | ||
| 100 | (syspage_mask): Declared DWORD_PTR, for compatibility with 64-bit | ||
| 101 | builds. | ||
| 102 | (file_dialog_callback): Declared UINT_PTR. | ||
| 103 | |||
| 104 | * w32common.h (syspage_mask): Declare DWORD_PTR, for compatibility | ||
| 105 | with 64-bit builds. | ||
| 106 | |||
| 107 | * w32.c (FILE_DEVICE_FILE_SYSTEM, METHOD_BUFFERED) | ||
| 108 | (FILE_ANY_ACCESS, CTL_CODE) [_MSC_VER]: Define only if not already | ||
| 109 | defined. | ||
| 110 | |||
| 111 | 2012-12-03 Glenn Morris <rgm@gnu.org> | ||
| 112 | |||
| 113 | * data.c (Fboundp, Fsymbol_value): Doc fix re lexical-binding. | ||
| 114 | |||
| 115 | 2012-12-02 Paul Eggert <eggert@cs.ucla.edu> | ||
| 116 | |||
| 117 | Fix xpalloc confusion after memory is exhausted. | ||
| 118 | * alloc.c (xpalloc): Comment fix. | ||
| 119 | * charset.c (Fdefine_charset_internal): If xpalloc exhausts memory | ||
| 120 | and signals an error, do not clear charset_table_size, as | ||
| 121 | charset_table is still valid. | ||
| 122 | * doprnt.c (evxprintf): Clear *BUF after freeing it. | ||
| 123 | |||
| 124 | Use execve to avoid need to munge environ (Bug#13054). | ||
| 125 | * callproc.c (Fcall_process): | ||
| 126 | * process.c (create_process): | ||
| 127 | Don't save and restore environ; no longer needed. | ||
| 128 | * callproc.c (child_setup): | ||
| 129 | Use execve, not execvp, to preserve environ. | ||
| 130 | |||
| 131 | 2012-12-01 Paul Eggert <eggert@cs.ucla.edu> | ||
| 132 | |||
| 133 | * xterm.c (x_draw_image_relief): Remove unused locals (Bug#10500). | ||
| 134 | |||
| 1 | 2012-12-01 YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp> | 135 | 2012-12-01 YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp> |
| 2 | 136 | ||
| 3 | * xterm.c (x_draw_relief_rect, x_draw_image_relief): Fix relief | 137 | * xterm.c (x_draw_relief_rect, x_draw_image_relief): Fix relief |