1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
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;
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.
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,
23 #include <lttv/tracecontext.h>
26 /* The operating system state, kept during the trace analysis,
27 contains a subset of the real operating system state,
28 sufficient for the analysis, and possibly organized quite differently.
30 The state information is added to LttvTracesetContext, LttvTraceContext
31 and LttvTracefileContext objects, used by process_traceset, through
32 subtyping. The context objects already reflect the multiple tracefiles
33 (one per cpu) per trace and multiple traces per trace set. The state
34 objects defined here simply add fields to the relevant context objects.
36 There is no traceset specific state yet. It may eventually contains such
37 things as clock differences over time.
39 The trace state currently consists in a process table.
41 The tracefile level state relates to the associated cpu. It contains the
42 position of the current event in the tracefile (since the state depends on
43 which events have been processed) and a pointer to the current process,
44 in the process table, being run on that cpu.
46 For each process in the process table, various informations such as exec
47 file name, pid, ppid and creation time are stored. Each process state also
48 contains an execution mode stack (e.g. irq within system call, called
51 /* Priority of state hooks */
52 #define LTTV_PRIO_STATE 25
54 #define LTTV_STATE_SAVE_INTERVAL 50000
56 /* Facilities Quarks */
60 LTT_FACILITY_ASM_I386_KERNEL
,
67 LTT_EVENT_SYSCALL_ENTRY
,
68 LTT_EVENT_SYSCALL_EXIT
,
73 LTT_EVENT_SCHEDCHANGE
,
93 extern GQuark LTT_EVENT_SYSCALL_ENTRY
;
95 typedef struct _LttvTracesetState LttvTracesetState
;
96 typedef struct _LttvTracesetStateClass LttvTracesetStateClass
;
98 typedef struct _LttvTraceState LttvTraceState
;
99 typedef struct _LttvTraceStateClass LttvTraceStateClass
;
101 typedef struct _LttvTracefileState LttvTracefileState
;
102 typedef struct _LttvTracefileStateClass LttvTracefileStateClass
;
104 gint
lttv_state_hook_add_event_hooks(void *hook_data
, void *call_data
);
105 void lttv_state_add_event_hooks(LttvTracesetState
*self
);
107 gint
lttv_state_hook_remove_event_hooks(void *hook_data
, void *call_data
);
108 void lttv_state_remove_event_hooks(LttvTracesetState
*self
);
110 void lttv_state_save_add_event_hooks(LttvTracesetState
*self
);
111 // Hook wrapper. call_data is a trace context.
112 gint
lttv_state_save_hook_add_event_hooks(void *hook_data
, void *call_data
);
114 void lttv_state_save_remove_event_hooks(LttvTracesetState
*self
);
115 // Hook wrapper. call_data is a trace context.
116 gint
lttv_state_save_hook_remove_event_hooks(void *hook_data
, void *call_data
);
118 void lttv_state_traceset_seek_time_closest(LttvTracesetState
*self
, LttTime t
);
120 /* The LttvProcessState structure defines the current state for each process.
121 A process can make system calls (in some rare cases nested) and receive
122 interrupts/faults. For instance, a process may issue a system call,
123 generate a page fault while reading an argument from user space, and
124 get caught by an interrupt. To represent these nested states, an
125 execution mode stack is maintained. The stack bottom is normal user mode
126 and the top of stack is the current execution mode.
128 The execution mode stack tells about the process status, execution mode and
129 submode (interrupt, system call or IRQ number). All these could be
130 defined as enumerations but may need extensions (e.g. new process state).
131 GQuark are thus used. They are as easy to manipulate as integers but have
132 a string associated, just like enumerations.
134 The execution mode is one of "user mode", "kernel thread", "system call",
135 "interrupt request", "fault". */
137 typedef GQuark LttvExecutionMode
;
139 extern LttvExecutionMode
140 LTTV_STATE_USER_MODE
,
144 LTTV_STATE_MODE_UNKNOWN
;
147 /* The submode number depends on the execution mode. For user mode or kernel
148 thread, which are the normal mode (execution mode stack bottom),
149 it is set to "none". For interrupt requests, faults and system calls,
150 it is set respectively to the interrupt name (e.g. "timer"), fault name
151 (e.g. "page fault"), and system call name (e.g. "select"). */
153 typedef GQuark LttvExecutionSubmode
;
155 extern LttvExecutionSubmode
156 LTTV_STATE_SUBMODE_NONE
,
157 LTTV_STATE_SUBMODE_UNKNOWN
;
159 /* The process status is one of "running", "wait-cpu" (runnable), or "wait-*"
160 where "*" describes the resource waited for (e.g. timer, process,
163 typedef GQuark LttvProcessStatus
;
165 extern LttvProcessStatus
167 LTTV_STATE_WAIT_FORK
,
176 typedef struct _LttvExecutionState
{
178 LttvExecutionSubmode n
;
182 } LttvExecutionState
;
185 typedef struct _LttvProcessState
{
188 LttTime creation_time
;
189 LttTime insertion_time
;
192 GArray
*execution_stack
; /* Array of LttvExecutionState */
193 LttvExecutionState
*state
; /* Top of interrupt stack */
194 /* WARNING : each time the execution_stack size is modified, the state
195 * must be reget : g_array_set_size can have to move the array.
197 guint cpu
; /* CPU where process is scheduled (being either in
198 the active or inactive runqueue)*/
199 // guint last_tracefile_index; /* index in the trace for cpu tracefile */
200 /* opened file descriptors, address map?... */
203 #define ANY_CPU 0 /* For clarity sake : a call to lttv_state_find_process for
204 a PID != 0 will search on any cpu automatically. */
207 lttv_state_find_process(LttvTraceState
*ts
, guint cpu
, guint pid
);
210 lttv_state_find_process_or_create(LttvTraceState
*ts
, guint cpu
, guint pid
,
214 lttv_state_create_process(LttvTraceState
*ts
, LttvProcessState
*parent
,
215 guint cpu
, guint pid
, const LttTime
*timestamp
);
217 void lttv_state_write(LttvTraceState
*self
, LttTime t
, FILE *fp
);
219 /* The LttvTracesetState, LttvTraceState and LttvTracefileState types
220 inherit from the corresponding Context objects defined in processTrace. */
222 #define LTTV_TRACESET_STATE_TYPE (lttv_traceset_state_get_type ())
223 #define LTTV_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_STATE_TYPE, LttvTracesetState))
224 #define LTTV_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass))
225 #define LTTV_IS_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_STATE_TYPE))
226 #define LTTV_IS_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_STATE_TYPE))
227 #define LTTV_TRACESET_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass))
229 struct _LttvTracesetState
{
230 LttvTracesetContext parent
;
233 struct _LttvTracesetStateClass
{
234 LttvTracesetContextClass parent
;
237 GType
lttv_traceset_state_get_type (void);
240 #define LTTV_TRACE_STATE_TYPE (lttv_trace_state_get_type ())
241 #define LTTV_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_STATE_TYPE, LttvTraceState))
242 #define LTTV_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass))
243 #define LTTV_IS_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_STATE_TYPE))
244 #define LTTV_IS_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_STATE_TYPE))
245 #define LTTV_TRACE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass))
247 struct _LttvTraceState
{
248 LttvTraceContext parent
;
250 GHashTable
*processes
; /* LttvProcessState objects indexed by pid and
252 guint nb_event
, save_interval
;
253 /* Block/char devices, locks, memory pages... */
254 GQuark
*eventtype_names
;
255 GQuark
*syscall_names
;
258 LttTime
*max_time_state_recomputed_in_seek
;
260 /* Array of per cpu running process */
261 LttvProcessState
**running_process
;
265 struct _LttvTraceStateClass
{
266 LttvTraceContextClass parent
;
268 void (*state_save
) (LttvTraceState
*self
, LttvAttribute
*container
);
269 void (*state_restore
) (LttvTraceState
*self
, LttvAttribute
*container
);
270 void (*state_saved_free
) (LttvTraceState
*self
, LttvAttribute
*container
);
273 GType
lttv_trace_state_get_type (void);
275 void lttv_state_save(LttvTraceState
*self
, LttvAttribute
*container
);
277 void lttv_state_restore(LttvTraceState
*self
, LttvAttribute
*container
);
279 void lttv_state_state_saved_free(LttvTraceState
*self
,
280 LttvAttribute
*container
);
283 #define LTTV_TRACEFILE_STATE_TYPE (lttv_tracefile_state_get_type ())
284 #define LTTV_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileState))
285 #define LTTV_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass))
286 #define LTTV_IS_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_STATE_TYPE))
287 #define LTTV_IS_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_STATE_TYPE))
288 #define LTTV_TRACEFILE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass))
290 struct _LttvTracefileState
{
291 LttvTracefileContext parent
;
293 //LttvProcessState *process;
294 GQuark tracefile_name
;
295 // guint saved_position;
298 struct _LttvTracefileStateClass
{
299 LttvTracefileContextClass parent
;
302 GType
lttv_tracefile_state_get_type (void);