* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
@ 2020-03-28 4:03 ` Yuan Fu
2020-03-29 9:01 ` martin rudalics
2020-04-14 1:09 ` bug#40268: Fwd: " Yuan Fu
0 siblings, 2 replies; 8+ messages in thread
From: Yuan Fu @ 2020-03-28 4:03 UTC (permalink / raw)
To: 40268
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Before this change, stepping and other gdb command handlers use 'gud-display-line’ and 'gdb-goto-breakpoint' uses 'gdb-display-source-buffer'. Now whenever gdb-mi code tries to open a source buffer, 'gdb-display-source-buffer’ is used. Also, we simplify the logic in 'gdb-display-source-buffer’ and add a feature to limit the maximum number of source windows.
From a user’s perspective, this change solves two problems: 1. The behavior difference between jumping to break point and stepping (and other command) 2. Gdb-mi opening more windows than I wanted for displaying source files.
Yuan
[-- Attachment #2: source-window.patch --]
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From ad34237cdc7c06e7edfcb593e8c732c6a040a7cb Mon Sep 17 00:00:00 2001
From: Yuan Fu <casouri@gmail.com>
Date: Tue, 21 Jan 2020 16:23:57 -0500
Subject: [PATCH] Unify and improve gdb-mi source buffer display logic
Unify the behavior of source buffer display for gdb-mi. Before this
change, stepping and other gdb command handlers use 'gud-display-line'
and 'gdb-goto-breakpoint' uses 'gdb-display-source-buffer'. Now whenever
gdb-mi code tries to open a source buffer, 'gdb-display-source-buffer'
is used. Also, we simplify the logic in 'gdb-display-source-buffer' and
add a feature to limit the maximum number of source windows.
* lisp/progmodes/gdb-mi.el (gdb-source-window): Remove variable,
changed to 'gdb-source-window-list'.
(gdb-source-window-list, gdb-max-source-window-count): New variable.
(gdb-display-source-buffer-action,
gdb-max-source-window-count): New custom variable.
(gdb-init-1, gdb-setup-windows, gdb-restore-windows):
Use 'gdb-source-window' rather than 'gdb-source-window-list'.
(gdb-display-source-buffer): Use new logic.
(gdb-goto-breakpoint): Remove 'display-buffer'
and don't set 'gdb-source-buffer' anymore.
* lisp/progmodes/gud.el (gud-display-line): Remove 'display-buffer'
and don't set 'gdb-source-buffer' anymore.
---
lisp/progmodes/gdb-mi.el | 65 +++++++++++++++++++++++++++++-----------
lisp/progmodes/gud.el | 26 ++++++++--------
2 files changed, 60 insertions(+), 31 deletions(-)
diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index e4233dacaf..5f31a22f22 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -211,7 +211,9 @@ gdb-handler-list
(defvar gdb-source-file-list nil
"List of source files for the current executable.")
(defvar gdb-first-done-or-error t)
-(defvar gdb-source-window nil)
+(defvar gdb-source-window-list nil
+ "List of windows used for displaying source files.
+Sorted in most recently visited first order.")
(defvar gdb-inferior-status nil)
(defvar gdb-continuation nil)
(defvar gdb-supports-non-stop nil)
@@ -589,6 +591,21 @@ gdb-show-main
:group 'gdb
:version "22.1")
+(defcustom gdb-display-source-buffer-action nil
+ "`display-buffer' action used when GDB displaying a source buffer."
+ :type 'list
+ :group 'gdb
+ :version "28.1")
+
+(defcustom gdb-max-source-window-count 1
+ "Maximum number of source windows to use.
+Until there are such number of source windows on screen, GDB
+tries to open a new window when visiting a new source file; if
+there are, GDB will start to reuse existing source windows."
+ :type 'number
+ :grou 'gdb
+ :version "28.1")
+
(defvar gdbmi-debug-mode nil
"When non-nil, print the messages sent/received from GDB/MI in *Messages*.")
@@ -922,7 +939,7 @@ gdb-init-1
gdb-first-done-or-error t
gdb-buffer-fringe-width (car (window-fringes))
gdb-debug-log nil
- gdb-source-window nil
+ gdb-source-window-list nil
gdb-inferior-status nil
gdb-continuation nil
gdb-buf-publisher '()
@@ -2002,17 +2019,31 @@ gdb-show-stop-p
;; GDB frame (after up, down etc). If no GDB frame is visible but the last
;; visited breakpoint is, use that window.
(defun gdb-display-source-buffer (buffer)
- (let* ((last-window (if gud-last-last-frame
- (get-buffer-window
- (gud-find-file (car gud-last-last-frame)))))
- (source-window (or last-window
- (if (and gdb-source-window
- (window-live-p gdb-source-window))
- gdb-source-window))))
- (when source-window
- (setq gdb-source-window source-window)
- (set-window-buffer source-window buffer))
- source-window))
+ "Find a window to display BUFFER.
+Always find a window to display buffer, and return it."
+ ;; This function doesn't take care of setting up source window(s) at startup,
+ ;; that's handled by `gdb-setup-windows' (if `gdb-many-windows' is non-nil).
+ ;; If `buffer' is already shown in a window, use that window.
+ (or (get-buffer-window buffer)
+ (progn
+ ;; First, update the window list.
+ (setq gdb-source-window-list
+ (cl-remove-if-not #'window-live-p
+ gdb-source-window-list))
+ ;; Should we create a new window or reuse one?
+ (if (> gdb-max-source-window-count
+ (length gdb-source-window-list))
+ ;; Create a new window, push it to window list and return it.
+ (car (push (display-buffer buffer gdb-display-source-buffer-action)
+ gdb-source-window-list))
+ ;; Reuse a window, we use the oldest window and put that to
+ ;; the front of the window list.
+ (let ((last-win (car (last gdb-source-window-list)))
+ (rest (butlast gdb-source-window-list)))
+ (set-window-buffer last-win buffer)
+ (setq gdb-source-window-list
+ (cons last-win rest))
+ last-win)))))
(defun gdbmi-start-with (str offset match)
@@ -3981,9 +4012,7 @@ gdb-goto-breakpoint
(let* ((buffer (find-file-noselect
(if (file-exists-p file) file
(cdr (assoc bptno gdb-location-alist)))))
- (window (or (gdb-display-source-buffer buffer)
- (display-buffer buffer))))
- (setq gdb-source-window window)
+ (window (gdb-display-source-buffer buffer)))
(with-current-buffer buffer
(goto-char (point-min))
(forward-line (1- (string-to-number line)))
@@ -4597,7 +4626,7 @@ gdb-setup-windows
;; Put buffer list in window if we
;; can't find a source file.
(list-buffers-noselect))))
- (setq gdb-source-window (selected-window))
+ (setq gdb-source-window-list (list (selected-window)))
(let ((win4 (split-window-right)))
(gdb-set-window-buffer
(gdb-get-buffer-create 'gdb-inferior-io) nil win4))
@@ -4639,7 +4668,7 @@ gdb-restore-windows
(if gud-last-last-frame
(gud-find-file (car gud-last-last-frame))
(gud-find-file gdb-main-file)))
- (setq gdb-source-window win)))))
+ (setq gdb-source-window-list (list win))))))
;; Called from `gud-sentinel' in gud.el:
(defun gdb-reset ()
diff --git a/lisp/progmodes/gud.el b/lisp/progmodes/gud.el
index 567f452b93..dda7fd6ef0 100644
--- a/lisp/progmodes/gud.el
+++ b/lisp/progmodes/gud.el
@@ -2826,9 +2826,11 @@ gud-display-line
(buffer
(with-current-buffer gud-comint-buffer
(gud-find-file true-file)))
- (window (and buffer
- (or (get-buffer-window buffer)
- (display-buffer buffer '(nil (inhibit-same-window . t))))))
+ (window (when buffer (if (eq gud-minor-mode 'gdb-mi)
+ (gdb-display-source-buffer buffer)
+ ;; Gud still has the old behavior.
+ (or (get-buffer-window buffer)
+ (display-buffer buffer '(nil (inhibit-same-window . t)))))))
(pos))
(when buffer
(with-current-buffer buffer
@@ -2858,9 +2860,7 @@ gud-display-line
(widen)
(goto-char pos))))
(when window
- (set-window-point window gud-overlay-arrow-position)
- (if (eq gud-minor-mode 'gdbmi)
- (setq gdb-source-window window))))))
+ (set-window-point window gud-overlay-arrow-position)))))
;; The gud-call function must do the right thing whether its invoking
;; keystroke is from the GUD buffer itself (via major-mode binding)
@@ -2908,14 +2908,14 @@ gud-format-command
(setq subst
(gud-find-class
(if insource
- (buffer-file-name)
- (car frame))
+ (buffer-file-name)
+ (car frame))
(if insource
- (save-restriction
- (widen)
- (+ (count-lines (point-min) (point))
- (if (bolp) 1 0)))
- (cdr frame)))))
+ (save-restriction
+ (widen)
+ (+ (count-lines (point-min) (point))
+ (if (bolp) 1 0)))
+ (cdr frame)))))
((eq key ?p)
(setq subst (if arg (int-to-string arg)))))
(setq result (concat result (match-string 1 str) subst)))
--
2.25.1
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^ permalink raw reply related [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-03-28 4:03 ` bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display Yuan Fu
@ 2020-03-29 9:01 ` martin rudalics
2020-03-29 17:27 ` Yuan Fu
2020-04-14 1:09 ` bug#40268: Fwd: " Yuan Fu
1 sibling, 1 reply; 8+ messages in thread
From: martin rudalics @ 2020-03-29 9:01 UTC (permalink / raw)
To: Yuan Fu, 40268
> From a user’s perspective, this change solves two problems: 1. The
> behavior difference between jumping to break point and stepping (and
> other command) 2. Gdb-mi opening more windows than I wanted for
> displaying source files.
The patch doesn't apply here. Searching for
:group 'gdb
:version "22.1")
(defvar gdbmi-debug-mode nil
"When non-nil, print the messages sent/received from GDB/MI in *Messages*.")
fails.
Thanks, martin
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-03-29 9:01 ` martin rudalics
@ 2020-03-29 17:27 ` Yuan Fu
2020-03-31 9:15 ` martin rudalics
0 siblings, 1 reply; 8+ messages in thread
From: Yuan Fu @ 2020-03-29 17:27 UTC (permalink / raw)
To: martin rudalics; +Cc: 40268
[-- Attachment #1: Type: text/plain, Size: 690 bytes --]
> On Mar 29, 2020, at 5:01 AM, martin rudalics <rudalics@gmx.at> wrote:
>
> > From a user’s perspective, this change solves two problems: 1. The
> > behavior difference between jumping to break point and stepping (and
> > other command) 2. Gdb-mi opening more windows than I wanted for
> > displaying source files.
>
> The patch doesn't apply here. Searching for
>
> :group 'gdb
> :version "22.1")
>
> (defvar gdbmi-debug-mode nil
> "When non-nil, print the messages sent/received from GDB/MI in *Messages*.")
>
>
> fails.
>
> Thanks, martin
>
Ah, I see. I should have generate this patch against the latest history. This one should be ok.
Yuan
[-- Attachment #2: source-window.patch --]
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From 8fb48ccf1b2f3e03e782c6aed7273ede843bb9d1 Mon Sep 17 00:00:00 2001
From: Yuan Fu <casouri@gmail.com>
Date: Sun, 29 Mar 2020 10:20:53 -0400
Subject: [PATCH] Unify and improve gdb-mi source buffer display logic
Unify the behavior of source buffer display for gdb-mi. Before this
change, stepping and other gdb command handlers use 'gud-display-line'
and 'gdb-goto-breakpoint' uses 'gdb-display-source-buffer'. Now whenever
gdb-mi code tries to open a source buffer, 'gdb-display-source-buffer'
is used. Also, we simply the logic in 'gdb-display-source-buffer' and
add a feature to limit the maximum number of source windows.
* lisp/progmodes/gdb-mi.el (gdb-source-window): Remove variable,
change to 'gdb-source-window-list'.
(gdb-source-window-list): New variable.
(gdb-display-source-buffer-action,
gdb-max-source-window-count): New custom variable.
(gdb-init-1, gdb-setup-windows, gdb-save-window-configuration,
gdb-load-window-configuration, gdb-restore-windows): Use
'gdb-source-window' rather than 'gdb-source-window-list'.
(gdb-display-source-buffer): Use new logic.
(gdb-goto-breakpoint): Remove 'display-buffer'
and don't set 'gdb-source-buffer' anymore.
* lisp/progmodes/gud.el (gud-display-line): If used by gdb-mi, use
'gdb-display-source-buffer' rather than 'display-buffer'. Don't set
'gdb-source-buffer' anymore.
---
lisp/progmodes/gdb-mi.el | 73 +++++++++++++++++++++++++++++-----------
lisp/progmodes/gud.el | 12 +++----
2 files changed, 59 insertions(+), 26 deletions(-)
diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index 7fb3687391..93012ad18d 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -224,7 +224,9 @@ gdb-handler-list
(defvar gdb-source-file-list nil
"List of source files for the current executable.")
(defvar gdb-first-done-or-error t)
-(defvar gdb-source-window nil)
+(defvar gdb-source-window-list nil
+ "List of windows used for displaying source files.
+Sorted in most recently visited first order.")
(defvar gdb-inferior-status nil)
(defvar gdb-continuation nil)
(defvar gdb-supports-non-stop nil)
@@ -645,6 +647,21 @@ gdb-default-window-configuration-file
:group 'gdb
:version "28.1")
+(defcustom gdb-display-source-buffer-action '(nil . ((inhibit-same-window . t)))
+ "`display-buffer' action used when GDB displaying a source buffer."
+ :type 'list
+ :group 'gdb
+ :version "28.1")
+
+(defcustom gdb-max-source-window-count 1
+ "Maximum number of source windows to use.
+Until there are such number of source windows on screen, GDB
+tries to open a new window when visiting a new source file; after
+that GDB starts to reuse existing source windows."
+ :type 'number
+ :group 'gdb
+ :version "28.1")
+
(defvar gdbmi-debug-mode nil
"When non-nil, print the messages sent/received from GDB/MI in *Messages*.")
@@ -984,7 +1001,7 @@ gdb-init-1
gdb-first-done-or-error t
gdb-buffer-fringe-width (car (window-fringes))
gdb-debug-log nil
- gdb-source-window nil
+ gdb-source-window-list nil
gdb-inferior-status nil
gdb-continuation nil
gdb-buf-publisher '()
@@ -2069,17 +2086,35 @@ gdb-show-stop-p
;; GDB frame (after up, down etc). If no GDB frame is visible but the last
;; visited breakpoint is, use that window.
(defun gdb-display-source-buffer (buffer)
- (let* ((last-window (if gud-last-last-frame
- (get-buffer-window
- (gud-find-file (car gud-last-last-frame)))))
- (source-window (or last-window
- (if (and gdb-source-window
- (window-live-p gdb-source-window))
- gdb-source-window))))
- (when source-window
- (setq gdb-source-window source-window)
- (set-window-buffer source-window buffer))
- source-window))
+ "Find a window to display BUFFER.
+Always find a window to display buffer, and return it."
+ ;; This function doesn't take care of setting up source window(s) at startup,
+ ;; that's handled by `gdb-setup-windows' (if `gdb-many-windows' is non-nil).
+ ;; If `buffer' is already shown in a window, use that window.
+ (or (get-buffer-window buffer)
+ (progn
+ ;; First, update the window list.
+ (setq gdb-source-window-list
+ (cl-remove-duplicates
+ (cl-remove-if-not (lambda (win) (and (window-live-p win)
+ (equal (window-frame win)
+ (selected-frame))))
+ gdb-source-window-list)
+ :test #'equal))
+ ;; Should we create a new window or reuse one?
+ (if (> gdb-max-source-window-count
+ (length gdb-source-window-list))
+ ;; Create a new window, push it to window list and return it.
+ (car (push (display-buffer buffer gdb-display-source-buffer-action)
+ gdb-source-window-list))
+ ;; Reuse a window, we use the oldest window and put that to
+ ;; the front of the window list.
+ (let ((last-win (car (last gdb-source-window-list)))
+ (rest (butlast gdb-source-window-list)))
+ (set-window-buffer last-win buffer)
+ (setq gdb-source-window-list
+ (cons last-win rest))
+ last-win)))))
(defun gdbmi-start-with (str offset match)
@@ -4064,9 +4099,7 @@ gdb-goto-breakpoint
(let* ((buffer (find-file-noselect
(if (file-exists-p file) file
(cdr (assoc bptno gdb-location-alist)))))
- (window (or (gdb-display-source-buffer buffer)
- (display-buffer buffer))))
- (setq gdb-source-window window)
+ (window (gdb-display-source-buffer buffer)))
(with-current-buffer buffer
(goto-char (point-min))
(forward-line (1- (string-to-number line)))
@@ -4715,7 +4748,7 @@ gdb-setup-windows
(select-window win2)
(set-window-buffer win2 (or (gdb-get-source-buffer)
(list-buffers-noselect)))
- (setq gdb-source-window (selected-window))
+ (setq gdb-source-window-list (list (selected-window)))
(let ((win4 (split-window-right)))
(gdb-set-window-buffer
(gdb-get-buffer-create 'gdb-inferior-io) nil win4))
@@ -4791,7 +4824,7 @@ gdb-save-window-configuration
(error "Unrecognized gdb buffer mode: %s" major-mode)))
;; Command buffer.
((derived-mode-p 'gud-mode) 'command)
- ((equal (selected-window) gdb-source-window) 'source)))
+ ((member (selected-window) gdb-source-window-list) 'source)))
(with-window-non-dedicated nil
(set-window-buffer nil placeholder)
(set-window-prev-buffers (selected-window) nil)
@@ -4834,7 +4867,7 @@ gdb-load-window-configuration
(pcase buffer-type
('source (when source-buffer
(set-window-buffer nil source-buffer)
- (setq gdb-source-window (selected-window))))
+ (push (selected-window) gdb-source-window-list)))
('command (switch-to-buffer gud-comint-buffer))
(_ (let ((buffer (gdb-get-buffer-create buffer-type)))
(with-window-non-dedicated nil
@@ -4875,7 +4908,7 @@ gdb-restore-windows
(if gud-last-last-frame
(gud-find-file (car gud-last-last-frame))
(gud-find-file gdb-main-file)))
- (setq gdb-source-window win)))))
+ (setq gdb-source-window-list (list win))))))
;; Called from `gud-sentinel' in gud.el:
(defun gdb-reset ()
diff --git a/lisp/progmodes/gud.el b/lisp/progmodes/gud.el
index 567f452b93..c9522bfe17 100644
--- a/lisp/progmodes/gud.el
+++ b/lisp/progmodes/gud.el
@@ -2826,9 +2826,11 @@ gud-display-line
(buffer
(with-current-buffer gud-comint-buffer
(gud-find-file true-file)))
- (window (and buffer
- (or (get-buffer-window buffer)
- (display-buffer buffer '(nil (inhibit-same-window . t))))))
+ (window (when buffer (if (eq gud-minor-mode 'gdbmi)
+ (gdb-display-source-buffer buffer)
+ ;; Gud still has the old behavior.
+ (or (get-buffer-window buffer)
+ (display-buffer buffer '(nil (inhibit-same-window . t)))))))
(pos))
(when buffer
(with-current-buffer buffer
@@ -2858,9 +2860,7 @@ gud-display-line
(widen)
(goto-char pos))))
(when window
- (set-window-point window gud-overlay-arrow-position)
- (if (eq gud-minor-mode 'gdbmi)
- (setq gdb-source-window window))))))
+ (set-window-point window gud-overlay-arrow-position)))))
;; The gud-call function must do the right thing whether its invoking
;; keystroke is from the GUD buffer itself (via major-mode binding)
--
2.25.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-03-29 17:27 ` Yuan Fu
@ 2020-03-31 9:15 ` martin rudalics
2020-04-04 20:29 ` Yuan Fu
0 siblings, 1 reply; 8+ messages in thread
From: martin rudalics @ 2020-03-31 9:15 UTC (permalink / raw)
To: Yuan Fu; +Cc: 40268
> This one should be ok.
Thanks. A few remarks. Please try to ident as
(setq gdb-source-window-list
(cl-remove-duplicates
(cl-remove-if-not
(lambda (win)
(and (window-live-p win)
(equal (window-frame win)
(selected-frame))))
gdb-source-window-list)
:test #'equal))
so we can safely change this later and easily stay within our line
length limits. Also, tests like
(equal (window-frame win)
(selected-frame))))
should use "eq" instead of "equal" and ones like
((member (selected-window) gdb-source-window-list) 'source)))
"memq" instead of "member".
Similarly to the above, writing
(window
(when buffer
(if (eq gud-minor-mode 'gdbmi)
(gdb-display-source-buffer buffer)
;; Gud still has the old behavior.
(or (get-buffer-window buffer)
(display-buffer buffer '(nil (inhibit-same-window . t)))))))
permits us to stay within the 80 columns limit.
Finally, instead of "Also, we simply the logic ..." I'd write "Also,
simplify the logic ...". And please provide a NEWS entry.
Thanks again for the work, martin
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-03-31 9:15 ` martin rudalics
@ 2020-04-04 20:29 ` Yuan Fu
2020-04-06 9:04 ` martin rudalics
0 siblings, 1 reply; 8+ messages in thread
From: Yuan Fu @ 2020-04-04 20:29 UTC (permalink / raw)
To: martin rudalics; +Cc: 40268
[-- Attachment #1: Type: text/plain, Size: 1711 bytes --]
> On Mar 31, 2020, at 5:15 AM, martin rudalics <rudalics@gmx.at> wrote:
>
> > This one should be ok.
>
> Thanks. A few remarks. Please try to ident as
>
> (setq gdb-source-window-list
> (cl-remove-duplicates
> (cl-remove-if-not
> (lambda (win)
> (and (window-live-p win)
> (equal (window-frame win)
> (selected-frame))))
> gdb-source-window-list)
> :test #'equal))
>
> so we can safely change this later and easily stay within our line
> length limits. Also, tests like
>
> (equal (window-frame win)
> (selected-frame))))
>
> should use "eq" instead of "equal" and ones like
>
> ((member (selected-window) gdb-source-window-list) 'source)))
>
> "memq" instead of "member".
>
> Similarly to the above, writing
>
> (window
> (when buffer
> (if (eq gud-minor-mode 'gdbmi)
> (gdb-display-source-buffer buffer)
> ;; Gud still has the old behavior.
> (or (get-buffer-window buffer)
> (display-buffer buffer '(nil (inhibit-same-window . t)))))))
>
> permits us to stay within the 80 columns limit.
>
> Finally, instead of "Also, we simply the logic ..." I'd write "Also,
> simplify the logic ...". And please provide a NEWS entry.
>
> Thanks again for the work, Martin
Thanks for reviewing. Besides the changes you requested, I changed the last condition in the cond form in `gdb-save-window-configuration’ to a catch-all condition (to avoid weird problem when loading it back).
Yuan
[-- Attachment #2: source-window.patch --]
[-- Type: application/octet-stream, Size: 11092 bytes --]
From 41a8528515bbb9aeef6880ee3b7bc90320ab8b51 Mon Sep 17 00:00:00 2001
From: Yuan Fu <casouri@gmail.com>
Date: Sun, 29 Mar 2020 10:20:53 -0400
Subject: [PATCH] Unify and improve gdb-mi source buffer display logic
Unify the behavior of source buffer display for gdb-mi. Before this
change, stepping and other gdb command handlers use 'gud-display-line',
and 'gdb-goto-breakpoint' uses 'gdb-display-source-buffer'. Now whenever
gdb-mi code tries to open a source buffer, 'gdb-display-source-buffer'
is used. Also, simplify the logic in 'gdb-display-source-buffer' and
add a feature to limit the maximum number of source windows.
* doc/emacs/building.texi (GDB User Interface Layout): Explain source
file display in GDB.
* etc/NEWS (gdb-mi): Add news about source display.
* lisp/progmodes/gdb-mi.el (gdb-source-window): Remove variable,
change to 'gdb-source-window-list'.
(gdb-source-window-list): New variable.
(gdb-display-source-buffer-action,
gdb-max-source-window-count): New custom variable.
(gdb-init-1, gdb-setup-windows, gdb-load-window-configuration,
gdb-restore-windows): Use 'gdb-source-window' rather than
'gdb-source-window-list'.
(gdb-save-window-configuration): Use 'gdb-source-window' rather than
'gdb-source-window-list'. And consider any buffer that is not a
command or function buffer as a source buffer.
(gdb-display-source-buffer): Use new logic.
(gdb-goto-breakpoint): Remove 'display-buffer'
and don't set 'gdb-source-buffer' anymore.
* lisp/progmodes/gud.el (gud-display-line): If used by gdb-mi, use
'gdb-display-source-buffer' rather than 'display-buffer'. Don't set
'gdb-source-buffer' anymore.
---
doc/emacs/building.texi | 8 +++++
etc/NEWS | 6 ++++
lisp/progmodes/gdb-mi.el | 75 +++++++++++++++++++++++++++++-----------
lisp/progmodes/gud.el | 14 ++++----
4 files changed, 77 insertions(+), 26 deletions(-)
diff --git a/doc/emacs/building.texi b/doc/emacs/building.texi
index 8a05680c74..2c43323dc4 100644
--- a/doc/emacs/building.texi
+++ b/doc/emacs/building.texi
@@ -1022,6 +1022,14 @@ GDB User Interface Layout
the same with the menu bar, with the @samp{GDB-Windows} and
@samp{GDB-Frames} sub-menus of the @samp{GUD} menu.
+@vindex gdb-max-source-window-count
+@vindex gdb-display-source-buffer-action
+By default, GDB uses at most one window to display source file. You
+can make it use more windows by customizing
+@code{gdb-max-source-window-count}. You can also customize
+@code{gdb-display-source-buffer-action} to control how does GDB
+display source files.
+
When you finish debugging, kill the GUD interaction buffer with
@kbd{C-x k}, which will also kill all the buffers associated with the
session. However you need not do this if, after editing and
diff --git a/etc/NEWS b/etc/NEWS
index 4b477e5def..1260dfa30c 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -213,6 +213,12 @@ will remember the window configuration before GDB started and restore
it after GDB quits. A toggle button is also provided under 'Gud --
GDB-Windows'.
+---
+*** gdb-mi now has a better logic for displaying source buffers
+Now GDB only uses one source window to display source file by default.
+Customize 'gdb-max-source-window-count' to use more than one windows.
+Control source file display by 'gdb-display-source-buffer-action'.
+
** Gravatar
---
diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index 7fb3687391..d513c7606d 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -224,7 +224,9 @@ gdb-handler-list
(defvar gdb-source-file-list nil
"List of source files for the current executable.")
(defvar gdb-first-done-or-error t)
-(defvar gdb-source-window nil)
+(defvar gdb-source-window-list nil
+ "List of windows used for displaying source files.
+Sorted in most-recently-visited-first order.")
(defvar gdb-inferior-status nil)
(defvar gdb-continuation nil)
(defvar gdb-supports-non-stop nil)
@@ -645,6 +647,21 @@ gdb-default-window-configuration-file
:group 'gdb
:version "28.1")
+(defcustom gdb-display-source-buffer-action '(nil . ((inhibit-same-window . t)))
+ "`display-buffer' action used when GDB displaying a source buffer."
+ :type 'list
+ :group 'gdb
+ :version "28.1")
+
+(defcustom gdb-max-source-window-count 1
+ "Maximum number of source windows to use.
+Until there are such number of source windows on screen, GDB
+tries to open a new window when visiting a new source file; after
+that GDB starts to reuse existing source windows."
+ :type 'number
+ :group 'gdb
+ :version "28.1")
+
(defvar gdbmi-debug-mode nil
"When non-nil, print the messages sent/received from GDB/MI in *Messages*.")
@@ -984,7 +1001,7 @@ gdb-init-1
gdb-first-done-or-error t
gdb-buffer-fringe-width (car (window-fringes))
gdb-debug-log nil
- gdb-source-window nil
+ gdb-source-window-list nil
gdb-inferior-status nil
gdb-continuation nil
gdb-buf-publisher '()
@@ -2069,17 +2086,36 @@ gdb-show-stop-p
;; GDB frame (after up, down etc). If no GDB frame is visible but the last
;; visited breakpoint is, use that window.
(defun gdb-display-source-buffer (buffer)
- (let* ((last-window (if gud-last-last-frame
- (get-buffer-window
- (gud-find-file (car gud-last-last-frame)))))
- (source-window (or last-window
- (if (and gdb-source-window
- (window-live-p gdb-source-window))
- gdb-source-window))))
- (when source-window
- (setq gdb-source-window source-window)
- (set-window-buffer source-window buffer))
- source-window))
+ "Find a window to display BUFFER.
+Always find a window to display buffer, and return it."
+ ;; This function doesn't take care of setting up source window(s) at startup,
+ ;; that's handled by `gdb-setup-windows' (if `gdb-many-windows' is non-nil).
+ ;; If `buffer' is already shown in a window, use that window.
+ (or (get-buffer-window buffer)
+ (progn
+ ;; First, update the window list.
+ (setq gdb-source-window-list
+ (cl-remove-duplicates
+ (cl-remove-if-not
+ (lambda (win)
+ (and (window-live-p win)
+ (eq (window-frame win)
+ (selected-frame))))
+ gdb-source-window-list)))
+ ;; Should we create a new window or reuse one?
+ (if (> gdb-max-source-window-count
+ (length gdb-source-window-list))
+ ;; Create a new window, push it to window list and return it.
+ (car (push (display-buffer buffer gdb-display-source-buffer-action)
+ gdb-source-window-list))
+ ;; Reuse a window, we use the oldest window and put that to
+ ;; the front of the window list.
+ (let ((last-win (car (last gdb-source-window-list)))
+ (rest (butlast gdb-source-window-list)))
+ (set-window-buffer last-win buffer)
+ (setq gdb-source-window-list
+ (cons last-win rest))
+ last-win)))))
(defun gdbmi-start-with (str offset match)
@@ -4064,9 +4100,7 @@ gdb-goto-breakpoint
(let* ((buffer (find-file-noselect
(if (file-exists-p file) file
(cdr (assoc bptno gdb-location-alist)))))
- (window (or (gdb-display-source-buffer buffer)
- (display-buffer buffer))))
- (setq gdb-source-window window)
+ (window (gdb-display-source-buffer buffer)))
(with-current-buffer buffer
(goto-char (point-min))
(forward-line (1- (string-to-number line)))
@@ -4715,7 +4749,7 @@ gdb-setup-windows
(select-window win2)
(set-window-buffer win2 (or (gdb-get-source-buffer)
(list-buffers-noselect)))
- (setq gdb-source-window (selected-window))
+ (setq gdb-source-window-list (list (selected-window)))
(let ((win4 (split-window-right)))
(gdb-set-window-buffer
(gdb-get-buffer-create 'gdb-inferior-io) nil win4))
@@ -4791,7 +4825,8 @@ gdb-save-window-configuration
(error "Unrecognized gdb buffer mode: %s" major-mode)))
;; Command buffer.
((derived-mode-p 'gud-mode) 'command)
- ((equal (selected-window) gdb-source-window) 'source)))
+ ;; Consider everything else as source buffer.
+ (t 'source)))
(with-window-non-dedicated nil
(set-window-buffer nil placeholder)
(set-window-prev-buffers (selected-window) nil)
@@ -4834,7 +4869,7 @@ gdb-load-window-configuration
(pcase buffer-type
('source (when source-buffer
(set-window-buffer nil source-buffer)
- (setq gdb-source-window (selected-window))))
+ (push (selected-window) gdb-source-window-list)))
('command (switch-to-buffer gud-comint-buffer))
(_ (let ((buffer (gdb-get-buffer-create buffer-type)))
(with-window-non-dedicated nil
@@ -4875,7 +4910,7 @@ gdb-restore-windows
(if gud-last-last-frame
(gud-find-file (car gud-last-last-frame))
(gud-find-file gdb-main-file)))
- (setq gdb-source-window win)))))
+ (setq gdb-source-window-list (list win))))))
;; Called from `gud-sentinel' in gud.el:
(defun gdb-reset ()
diff --git a/lisp/progmodes/gud.el b/lisp/progmodes/gud.el
index 567f452b93..eb43e8b7e4 100644
--- a/lisp/progmodes/gud.el
+++ b/lisp/progmodes/gud.el
@@ -2826,9 +2826,13 @@ gud-display-line
(buffer
(with-current-buffer gud-comint-buffer
(gud-find-file true-file)))
- (window (and buffer
- (or (get-buffer-window buffer)
- (display-buffer buffer '(nil (inhibit-same-window . t))))))
+ (window
+ (when buffer
+ (if (eq gud-minor-mode 'gdbmi)
+ (gdb-display-source-buffer buffer)
+ ;; Gud still has the old behavior.
+ (or (get-buffer-window buffer)
+ (display-buffer buffer '(nil (inhibit-same-window . t)))))))
(pos))
(when buffer
(with-current-buffer buffer
@@ -2858,9 +2862,7 @@ gud-display-line
(widen)
(goto-char pos))))
(when window
- (set-window-point window gud-overlay-arrow-position)
- (if (eq gud-minor-mode 'gdbmi)
- (setq gdb-source-window window))))))
+ (set-window-point window gud-overlay-arrow-position)))))
;; The gud-call function must do the right thing whether its invoking
;; keystroke is from the GUD buffer itself (via major-mode binding)
--
2.25.1
[-- Attachment #3: Type: text/plain, Size: 1 bytes --]
^ permalink raw reply related [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-04-04 20:29 ` Yuan Fu
@ 2020-04-06 9:04 ` martin rudalics
2020-04-06 14:21 ` Yuan Fu
0 siblings, 1 reply; 8+ messages in thread
From: martin rudalics @ 2020-04-06 9:04 UTC (permalink / raw)
To: Yuan Fu; +Cc: 40268
> Thanks for reviewing. Besides the changes you requested, I changed the
> last condition in the cond form in `gdb-save-window-configuration’ to
> a catch-all condition (to avoid weird problem when loading it back).
Pushed to master with my usual tweaks. Please have a look.
Thanks, martin
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-04-06 9:04 ` martin rudalics
@ 2020-04-06 14:21 ` Yuan Fu
0 siblings, 0 replies; 8+ messages in thread
From: Yuan Fu @ 2020-04-06 14:21 UTC (permalink / raw)
To: martin rudalics; +Cc: 40268
> On Apr 6, 2020, at 5:04 AM, martin rudalics <rudalics@gmx.at> wrote:
>
> > Thanks for reviewing. Besides the changes you requested, I changed the
> > last condition in the cond form in `gdb-save-window-configuration’ to
> > a catch-all condition (to avoid weird problem when loading it back).
>
> Pushed to master with my usual tweaks. Please have a look.
>
> Thanks, martin
>
Thanks, I’ll try to address them next time.
Yuan
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#40268: Fwd: bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
2020-03-28 4:03 ` bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display Yuan Fu
2020-03-29 9:01 ` martin rudalics
@ 2020-04-14 1:09 ` Yuan Fu
1 sibling, 0 replies; 8+ messages in thread
From: Yuan Fu @ 2020-04-14 1:09 UTC (permalink / raw)
To: 40268-done
[-- Attachment #1: Type: text/plain, Size: 477 bytes --]
> Begin forwarded message:
>
> From: martin rudalics <rudalics@gmx.at>
> Subject: Re: bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display
> Date: April 13, 2020 at 1:29:00 PM GMT-4
> To: Yuan Fu <casouri@gmail.com>
>
>> Thanks, I’ll try to address them next time.
>> Yuan
>
> Please consider marking this and maybe some other bug (Bug#39181?)
> as done unless we should change something else too.
>
> Thanks, martin
>
>
>
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^ permalink raw reply [flat|nested] 8+ messages in thread
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2020-03-28 4:03 ` bug#40268: 27.0.60; [PATCH] Unify and improve gdb-mi source window display Yuan Fu
2020-03-29 9:01 ` martin rudalics
2020-03-29 17:27 ` Yuan Fu
2020-03-31 9:15 ` martin rudalics
2020-04-04 20:29 ` Yuan Fu
2020-04-06 9:04 ` martin rudalics
2020-04-06 14:21 ` Yuan Fu
2020-04-14 1:09 ` bug#40268: Fwd: " Yuan Fu
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