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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
18 | |
19 | |
20 | /* This file does not even compile yet. It is a starting point to compute |
21 | some values in the background. This is why process_trace was split in |
22 | three. However, process_trace_middle as it is currently is would not work. |
23 | It needs to reinitialize its trace event positions each time since, |
24 | in between background calls to process middle, other foreground calls to |
25 | process_middle can happen. */ |
26 | |
27 | #include <lttvwindow/idleprocesstrace.h> |
28 | |
29 | /* The calling function has checked that the needed information has not |
30 | been or is not being computed yet, has prepared the trace, and now all |
31 | that is needed is to queue it for processing. |
32 | |
33 | CHECK remove the work_queue global variable, have an automatic adjustment |
34 | of the number of events to process by iteration. */ |
35 | |
36 | static gboolean inserted = false; |
37 | |
38 | static GList *work_queue = NULL; |
39 | |
40 | typedef struct _WorkPiece WorkPiece; |
41 | |
42 | struct _WorkPiece { |
43 | LttvTracesetContext *self; |
44 | LttTime end; |
45 | unsigned nb_events; |
46 | LttvHook f; |
47 | void *hook_data; |
48 | unsigned nb_done; |
49 | } |
50 | |
51 | guint lttv_process_traceset_piece(gpointer data) |
52 | { |
53 | GList *first = g_list_first(work_queue); |
54 | |
55 | guint nb_done, nb_asked; |
56 | |
57 | if(first == NULL) { |
58 | inserted = false; |
59 | return false; |
60 | } |
61 | |
62 | WorkPiece *work_piece = (WorkPiece *)first->data; |
63 | nb_asked = work_piece->nb_events - work_piece->nb_done; |
64 | nb_asked = min(nb_asked, 10000); |
65 | nb_done = lttv_process_trace_middle(work_piece->self,work_piece->end, |
66 | nb_asked); |
67 | work_piece->nb_done += nb_done; |
68 | if(nb_done < nb_asked) { |
69 | lttv_process_trace_end(work_piece->self); |
70 | work_queue = g_list_delete(work_queue, first); |
71 | } |
72 | } |
73 | |
74 | |
75 | void lttv_process_traceset_when_idle(LttvTracesetContext *self, LttTime end, |
76 | unsigned nb_events, LttvHook f, void *hook_data) |
77 | { |
78 | WorkPiece *work_piece = g_new(WorkPiece); |
79 | work_piece->self = self; |
80 | work_piece->end = end; |
81 | work_piece->nb_events = nb_events; |
82 | work_piece->f = f; |
83 | work_piece->hook_data = hook_data; |
84 | eork_piece->nb_done = 0; |
85 | |
86 | lttv_process_traceset_begin(self); |
87 | work_queue = g_list_append(work_queue, work_piece); |
88 | if(!inserted) g_idle_add(lttv_process_traceset_piece, work_queue); |
89 | } |
90 | |
91 | |