Handler for grab-focus signal

[lttv.git] / ltt / branches / poly / include / lttv / state.h

diff --git a/ltt/branches/poly/include/lttv/state.h b/ltt/branches/poly/include/lttv/state.h
index f85847b4da52727c0841d586ad2c797d846da11a..4205c27cf2fe107bb1c3df9f0bc5742c403bfded 100644 (file)
--- a/ltt/branches/poly/include/lttv/state.h
+++ b/ltt/branches/poly/include/lttv/state.h
@@ -1,10 +1,28 @@
+/* This file is part of the Linux Trace Toolkit viewer
+ * Copyright (C) 2003-2004 Michel Dagenais
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License Version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, 
+ * MA 02111-1307, USA.
+ */
+
 #ifndef STATE_H
 #define STATE_H
 
 #include <glib.h>
 #include <lttv/processTrace.h>
 
-/* The operating system state kept during the trace analysis
+/* The operating system state, kept during the trace analysis,
    contains a subset of the real operating system state, 
    sufficient for the analysis, and possibly organized quite differently.
 
@@ -12,7 +30,22 @@
    and LttvTracefileContext objects, used by processTrace, through
    subtyping. The context objects already reflect the multiple tracefiles
    (one per cpu) per trace and multiple traces per trace set. The state
-   objects defined here simply add fields to the relevant context objects. */
+   objects defined here simply add fields to the relevant context objects. 
+
+   There is no traceset specific state yet. It may eventually contains such
+   things as clock differences over time.
+
+   The trace state currently consists in a process table. 
+
+   The tracefile level state relates to the associated cpu. It contains the
+   position of the current event in the tracefile (since the state depends on
+   which events have been processed) and a pointer to the current process,
+   in the process table, being run on that cpu.
+
+   For each process in the process table, various informations such as exec 
+   file name, pid, ppid and creation time are stored. Each process state also
+   contains an execution mode stack (e.g. irq within system call, called
+   from user mode). */
 
 typedef struct _LttvTracesetState LttvTracesetState;
 typedef struct _LttvTracesetStateClass LttvTracesetStateClass;
@@ -23,9 +56,15 @@ typedef struct _LttvTraceStateClass LttvTraceStateClass;
 typedef struct _LttvTracefileState LttvTracefileState;
 typedef struct _LttvTracefileStateClass LttvTracefileStateClass;
 
-gboolean lttv_state_add_event_hooks(LttvTracesetState *self);
+void lttv_state_add_event_hooks(LttvTracesetState *self);
+
+void lttv_state_remove_event_hooks(LttvTracesetState *self);
+
+void lttv_state_save_add_event_hooks(LttvTracesetState *self);
 
-gboolean lttv_state_remove_event_hooks(LttvTracesetState *self);
+void lttv_state_save_remove_event_hooks(LttvTracesetState *self);
+
+void lttv_state_traceset_seek_time_closest(LttvTracesetState *self, LttTime t);
 
 /* The LttvProcessState structure defines the current state for each process.
    A process can make system calls (in some rare cases nested) and receive
@@ -101,8 +140,9 @@ typedef struct _LttvProcessState {
   /* opened file descriptors, address map?... */
 } LttvProcessState;
 
-
+//FIXME : find by pid and birth time : both are necessary to be unique
 LttvProcessState *lttv_state_find_process(LttvTracefileState *tfs, guint pid);
+LttvProcessState *lttv_state_find_process_from_trace(LttvTraceState *ts, guint pid);
 
 
 /* The LttvTracesetState, LttvTraceState and LttvTracefileState types
@@ -137,19 +177,34 @@ struct _LttvTraceState {
   LttvTraceContext parent;
 
   GHashTable *processes;  /* LttvProcessState objects indexed by pid */
+  guint nb_event, save_interval;
   /* Block/char devices, locks, memory pages... */
   GQuark *eventtype_names;
   GQuark *syscall_names;
   GQuark *trap_names;
   GQuark *irq_names;
+  gboolean recompute_state_in_seek;
+  gboolean saved_state_ready;
+  gboolean saved_state_available;
 };
 
 struct _LttvTraceStateClass {
   LttvTraceContextClass parent;
+
+  void (*state_save) (LttvTraceState *self, LttvAttribute *container);
+  void (*state_restore) (LttvTraceState *self, LttvAttribute *container);
+  void (*state_saved_free) (LttvTraceState *self, LttvAttribute *container);
 };
 
 GType lttv_trace_state_get_type (void);
 
+void lttv_state_save(LttvTraceState *self, LttvAttribute *container);
+
+void lttv_state_restore(LttvTraceState *self, LttvAttribute *container);
+
+void lttv_state_saved_state_free(LttvTraceState *self, 
+    LttvAttribute *container);
+
 
 #define LTTV_TRACEFILE_STATE_TYPE  (lttv_tracefile_state_get_type ())
 #define LTTV_TRACEFILE_STATE(obj)  (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileState))
@@ -163,6 +218,7 @@ struct _LttvTracefileState {
 
   LttvProcessState *process;
   GQuark cpu_name;
+  guint saved_position;
 };
 
 struct _LttvTracefileStateClass {