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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 | |
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19 | #ifndef STATE_H |
20 | #define STATE_H |
21 | |
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22 | #include <glib.h> |
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23 | #include <lttv/tracecontext.h> |
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24 | #include <stdio.h> |
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25 | |
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26 | /* The operating system state, kept during the trace analysis, |
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27 | contains a subset of the real operating system state, |
28 | sufficient for the analysis, and possibly organized quite differently. |
29 | |
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30 | The state information is added to LttvTracesetContext, LttvTraceContext |
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31 | and LttvTracefileContext objects, used by process_traceset, through |
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32 | subtyping. The context objects already reflect the multiple tracefiles |
33 | (one per cpu) per trace and multiple traces per trace set. The state |
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34 | objects defined here simply add fields to the relevant context objects. |
35 | |
36 | There is no traceset specific state yet. It may eventually contains such |
37 | things as clock differences over time. |
38 | |
39 | The trace state currently consists in a process table. |
40 | |
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. |
45 | |
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 |
49 | from user mode). */ |
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50 | |
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51 | /* Priority of state hooks */ |
52 | #define LTTV_PRIO_STATE 25 |
53 | |
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54 | #define LTTV_STATE_SAVE_INTERVAL 50000 |
55 | |
56 | /* Facilities Quarks */ |
57 | |
58 | extern GQuark |
59 | LTT_FACILITY_KERNEL, |
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60 | LTT_FACILITY_PROCESS, |
61 | LTT_FACILITY_FS; |
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62 | |
63 | /* Events Quarks */ |
64 | |
65 | extern GQuark |
66 | LTT_EVENT_SYSCALL_ENTRY, |
67 | LTT_EVENT_SYSCALL_EXIT, |
68 | LTT_EVENT_TRAP_ENTRY, |
69 | LTT_EVENT_TRAP_EXIT, |
70 | LTT_EVENT_IRQ_ENTRY, |
71 | LTT_EVENT_IRQ_EXIT, |
72 | LTT_EVENT_SCHEDCHANGE, |
73 | LTT_EVENT_FORK, |
74 | LTT_EVENT_EXIT, |
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75 | LTT_EVENT_FREE, |
76 | LTT_EVENT_EXEC; |
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77 | |
78 | /* Fields Quarks */ |
79 | |
80 | extern GQuark |
81 | LTT_FIELD_SYSCALL_ID, |
82 | LTT_FIELD_TRAP_ID, |
83 | LTT_FIELD_IRQ_ID, |
84 | LTT_FIELD_OUT, |
85 | LTT_FIELD_IN, |
86 | LTT_FIELD_OUT_STATE, |
87 | LTT_FIELD_PARENT_PID, |
88 | LTT_FIELD_CHILD_PID, |
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89 | LTT_FIELD_PID, |
90 | LTT_FIELD_NAME; |
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91 | |
92 | extern GQuark LTT_EVENT_SYSCALL_ENTRY; |
93 | |
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94 | typedef struct _LttvTracesetState LttvTracesetState; |
95 | typedef struct _LttvTracesetStateClass LttvTracesetStateClass; |
96 | |
97 | typedef struct _LttvTraceState LttvTraceState; |
98 | typedef struct _LttvTraceStateClass LttvTraceStateClass; |
99 | |
100 | typedef struct _LttvTracefileState LttvTracefileState; |
101 | typedef struct _LttvTracefileStateClass LttvTracefileStateClass; |
102 | |
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103 | gint lttv_state_hook_add_event_hooks(void *hook_data, void *call_data); |
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104 | void lttv_state_add_event_hooks(LttvTracesetState *self); |
105 | |
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106 | gint lttv_state_hook_remove_event_hooks(void *hook_data, void *call_data); |
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107 | void lttv_state_remove_event_hooks(LttvTracesetState *self); |
108 | |
109 | void lttv_state_save_add_event_hooks(LttvTracesetState *self); |
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110 | // Hook wrapper. call_data is a trace context. |
111 | gint lttv_state_save_hook_add_event_hooks(void *hook_data, void *call_data); |
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112 | |
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113 | void lttv_state_save_remove_event_hooks(LttvTracesetState *self); |
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114 | // Hook wrapper. call_data is a trace context. |
115 | gint lttv_state_save_hook_remove_event_hooks(void *hook_data, void *call_data); |
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116 | |
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117 | void lttv_state_traceset_seek_time_closest(LttvTracesetState *self, LttTime t); |
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118 | |
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119 | /* The LttvProcessState structure defines the current state for each process. |
120 | A process can make system calls (in some rare cases nested) and receive |
121 | interrupts/faults. For instance, a process may issue a system call, |
122 | generate a page fault while reading an argument from user space, and |
123 | get caught by an interrupt. To represent these nested states, an |
124 | execution mode stack is maintained. The stack bottom is normal user mode |
125 | and the top of stack is the current execution mode. |
126 | |
127 | The execution mode stack tells about the process status, execution mode and |
128 | submode (interrupt, system call or IRQ number). All these could be |
129 | defined as enumerations but may need extensions (e.g. new process state). |
130 | GQuark are thus used. They are as easy to manipulate as integers but have |
131 | a string associated, just like enumerations. |
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132 | |
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133 | The execution mode is one of "user mode", "kernel thread", "system call", |
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134 | "interrupt request", "fault". */ |
135 | |
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136 | typedef GQuark LttvExecutionMode; |
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137 | |
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138 | extern LttvExecutionMode |
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139 | LTTV_STATE_USER_MODE, |
140 | LTTV_STATE_SYSCALL, |
141 | LTTV_STATE_TRAP, |
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142 | LTTV_STATE_IRQ, |
143 | LTTV_STATE_MODE_UNKNOWN; |
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144 | |
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145 | |
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146 | /* The submode number depends on the execution mode. For user mode or kernel |
147 | thread, which are the normal mode (execution mode stack bottom), |
148 | it is set to "none". For interrupt requests, faults and system calls, |
149 | it is set respectively to the interrupt name (e.g. "timer"), fault name |
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150 | (e.g. "page fault"), and system call name (e.g. "select"). */ |
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151 | |
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152 | typedef GQuark LttvExecutionSubmode; |
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153 | |
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154 | extern LttvExecutionSubmode |
155 | LTTV_STATE_SUBMODE_NONE, |
156 | LTTV_STATE_SUBMODE_UNKNOWN; |
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157 | |
158 | /* The process status is one of "running", "wait-cpu" (runnable), or "wait-*" |
159 | where "*" describes the resource waited for (e.g. timer, process, |
160 | disk...). */ |
161 | |
162 | typedef GQuark LttvProcessStatus; |
163 | |
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164 | extern LttvProcessStatus |
165 | LTTV_STATE_UNNAMED, |
166 | LTTV_STATE_WAIT_FORK, |
167 | LTTV_STATE_WAIT_CPU, |
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168 | LTTV_STATE_EXIT, |
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169 | LTTV_STATE_ZOMBIE, |
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170 | LTTV_STATE_WAIT, |
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171 | LTTV_STATE_RUN, |
172 | LTTV_STATE_DEAD; |
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173 | |
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174 | |
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175 | typedef struct _LttvExecutionState { |
176 | LttvExecutionMode t; |
177 | LttvExecutionSubmode n; |
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178 | LttTime entry; |
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179 | LttTime change; |
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180 | LttvProcessStatus s; |
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181 | } LttvExecutionState; |
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182 | |
183 | |
184 | typedef struct _LttvProcessState { |
185 | guint pid; |
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186 | guint ppid; |
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187 | LttTime creation_time; |
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188 | LttTime insertion_time; |
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189 | GQuark name; |
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190 | GQuark pid_time; |
191 | GArray *execution_stack; /* Array of LttvExecutionState */ |
192 | LttvExecutionState *state; /* Top of interrupt stack */ |
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193 | /* WARNING : each time the execution_stack size is modified, the state |
194 | * must be reget : g_array_set_size can have to move the array. |
195 | * (Mathieu) */ |
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196 | guint cpu; /* CPU where process is scheduled (being either in |
197 | the active or inactive runqueue)*/ |
198 | // guint last_tracefile_index; /* index in the trace for cpu tracefile */ |
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199 | /* opened file descriptors, address map?... */ |
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200 | } LttvProcessState; |
201 | |
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202 | #define ANY_CPU 0 /* For clarity sake : a call to lttv_state_find_process for |
203 | a PID != 0 will search on any cpu automatically. */ |
204 | |
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205 | LttvProcessState * |
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206 | lttv_state_find_process(LttvTraceState *ts, guint cpu, guint pid); |
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207 | |
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208 | LttvProcessState * |
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209 | lttv_state_find_process_or_create(LttvTraceState *ts, guint cpu, guint pid, |
210 | LttTime *timestamp); |
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211 | |
212 | LttvProcessState * |
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213 | lttv_state_create_process(LttvTraceState *ts, LttvProcessState *parent, |
214 | guint cpu, guint pid, const LttTime *timestamp); |
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215 | |
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216 | void lttv_state_write(LttvTraceState *self, LttTime t, FILE *fp); |
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217 | |
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218 | /* The LttvTracesetState, LttvTraceState and LttvTracefileState types |
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219 | inherit from the corresponding Context objects defined in processTrace. */ |
220 | |
221 | #define LTTV_TRACESET_STATE_TYPE (lttv_traceset_state_get_type ()) |
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222 | #define LTTV_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_STATE_TYPE, LttvTracesetState)) |
223 | #define LTTV_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass)) |
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224 | #define LTTV_IS_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_STATE_TYPE)) |
225 | #define LTTV_IS_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_STATE_TYPE)) |
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226 | #define LTTV_TRACESET_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass)) |
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227 | |
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228 | struct _LttvTracesetState { |
229 | LttvTracesetContext parent; |
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230 | }; |
231 | |
232 | struct _LttvTracesetStateClass { |
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233 | LttvTracesetContextClass parent; |
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234 | }; |
235 | |
236 | GType lttv_traceset_state_get_type (void); |
237 | |
238 | |
239 | #define LTTV_TRACE_STATE_TYPE (lttv_trace_state_get_type ()) |
240 | #define LTTV_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_STATE_TYPE, LttvTraceState)) |
241 | #define LTTV_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass)) |
242 | #define LTTV_IS_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_STATE_TYPE)) |
243 | #define LTTV_IS_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_STATE_TYPE)) |
244 | #define LTTV_TRACE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass)) |
245 | |
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246 | struct _LttvTraceState { |
247 | LttvTraceContext parent; |
248 | |
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249 | GHashTable *processes; /* LttvProcessState objects indexed by pid and |
250 | last_cpu */ |
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251 | guint nb_event, save_interval; |
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252 | /* Block/char devices, locks, memory pages... */ |
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253 | GQuark *eventtype_names; |
254 | GQuark *syscall_names; |
255 | GQuark *trap_names; |
256 | GQuark *irq_names; |
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257 | LttTime *max_time_state_recomputed_in_seek; |
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258 | |
259 | /* Array of per cpu running process */ |
260 | LttvProcessState **running_process; |
261 | |
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262 | }; |
263 | |
264 | struct _LttvTraceStateClass { |
265 | LttvTraceContextClass parent; |
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266 | |
267 | void (*state_save) (LttvTraceState *self, LttvAttribute *container); |
268 | void (*state_restore) (LttvTraceState *self, LttvAttribute *container); |
269 | void (*state_saved_free) (LttvTraceState *self, LttvAttribute *container); |
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270 | }; |
271 | |
272 | GType lttv_trace_state_get_type (void); |
273 | |
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274 | void lttv_state_save(LttvTraceState *self, LttvAttribute *container); |
275 | |
276 | void lttv_state_restore(LttvTraceState *self, LttvAttribute *container); |
277 | |
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278 | void lttv_state_state_saved_free(LttvTraceState *self, |
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279 | LttvAttribute *container); |
280 | |
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281 | |
282 | #define LTTV_TRACEFILE_STATE_TYPE (lttv_tracefile_state_get_type ()) |
283 | #define LTTV_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileState)) |
284 | #define LTTV_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass)) |
285 | #define LTTV_IS_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_STATE_TYPE)) |
286 | #define LTTV_IS_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_STATE_TYPE)) |
287 | #define LTTV_TRACEFILE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass)) |
288 | |
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289 | struct _LttvTracefileState { |
290 | LttvTracefileContext parent; |
291 | |
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292 | //LttvProcessState *process; |
293 | GQuark tracefile_name; |
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294 | // guint saved_position; |
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295 | }; |
296 | |
297 | struct _LttvTracefileStateClass { |
298 | LttvTracefileContextClass parent; |
299 | }; |
300 | |
301 | GType lttv_tracefile_state_get_type (void); |
302 | |
303 | |
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304 | #endif // STATE_H |