thread brand
[lttv.git] / ltt / branches / poly / lttv / lttv / state.c
index 3084b429c668e5430f678a0191908e91987e4107..a3a3102a50039a3adbb2e7c58003bbd07c5f2046 100644 (file)
@@ -61,7 +61,8 @@ GQuark
     LTT_EVENT_EXEC,
     LTT_EVENT_ENUM_PROCESS_STATE,
                LTT_EVENT_FUNCTION_ENTRY,
-               LTT_EVENT_FUNCTION_EXIT;
+               LTT_EVENT_FUNCTION_EXIT,
+               LTT_EVENT_THREAD_BRAND;
 
 /* Fields Quarks */
 
@@ -78,6 +79,7 @@ GQuark
     LTT_FIELD_PID,
     LTT_FIELD_FILENAME,
     LTT_FIELD_NAME,
+    LTT_FIELD_TYPE,
     LTT_FIELD_MODE,
     LTT_FIELD_SUBMODE,
     LTT_FIELD_STATUS,
@@ -98,6 +100,7 @@ LttvExecutionSubmode
 
 LttvProcessStatus
   LTTV_STATE_UNNAMED,
+  LTTV_STATE_UNBRANDED,
   LTTV_STATE_WAIT_FORK,
   LTTV_STATE_WAIT_CPU,
   LTTV_STATE_EXIT,
@@ -106,6 +109,10 @@ LttvProcessStatus
   LTTV_STATE_RUN,
   LTTV_STATE_DEAD;
 
+LttvProcessType
+  LTTV_STATE_USER_THREAD,
+       LTTV_STATE_KERNEL_THREAD;
+
 static GQuark
   LTTV_STATE_TRACEFILES,
   LTTV_STATE_PROCESSES,
@@ -198,6 +205,8 @@ restore_init_state(LttvTraceState *self)
   guint i, nb_cpus;
 
   LttvTracefileState *tfcs;
+
+  LttTime start_time, end_time;
   
   /* Free the process tables */
   if(self->processes != NULL) lttv_state_free_process_table(self->processes);
@@ -213,6 +222,7 @@ restore_init_state(LttvTraceState *self)
   //g_tree_destroy(self->parent.ts_context->pqueue);
   //self->parent.ts_context->pqueue = g_tree_new(compare_tracefile);
   
+  ltt_trace_time_span_get(self->parent.t, &start_time, &end_time);
   
   //lttv_process_trace_seek_time(&self->parent, ltt_time_zero);
 
@@ -221,7 +231,7 @@ restore_init_state(LttvTraceState *self)
   /* Put the per cpu running_process to beginning state : process 0. */
   for(i=0; i< nb_cpus; i++) {
     self->running_process[i] = lttv_state_create_process(self, NULL, i, 0,
-        LTTV_STATE_UNNAMED, &ltt_time_zero);
+        LTTV_STATE_UNNAMED, &start_time);
     self->running_process[i]->state->s = LTTV_STATE_RUN;
     self->running_process[i]->cpu = i;
   }
@@ -412,9 +422,11 @@ static void write_process_state(gpointer key, gpointer value,
 
   process = (LttvProcessState *)value;
   fprintf(fp,
-"  <PROCESS CORE=%p PID=%u PPID=%u CTIME_S=%lu CTIME_NS=%lu NAME=\"%s\" CPU=\"%u\">\n",
-      process, process->pid, process->ppid, process->creation_time.tv_sec,
+"  <PROCESS CORE=%p PID=%u PPID=%u TYPE=\"%s\"CTIME_S=%lu CTIME_NS=%lu NAME=\"%s\" BRAND=\"%s\" CPU=\"%u\">\n",
+      process, process->pid, process->ppid, g_quark_to_string(process->type),
+                       process->creation_time.tv_sec,
       process->creation_time.tv_nsec, g_quark_to_string(process->name),
+      g_quark_to_string(process->brand),
       process->cpu);
 
   for(i = 0 ; i < process->execution_stack->len; i++) {
@@ -820,8 +832,9 @@ free_max_time(LttvTraceState *tcs)
 typedef struct _LttvNameTables {
  // FIXME  GQuark *eventtype_names;
   GQuark *syscall_names;
-       guint nb_syscalls;
+  guint nb_syscalls;
   GQuark *trap_names;
+  guint nb_traps;
   GQuark *irq_names;
   GQuark *soft_irq_names;
 } LttvNameTables;
@@ -912,7 +925,7 @@ create_name_tables(LttvTraceState *tcs)
                                        ltt_enum_string_get(t, i));
                }
                */
-
+               name_tables->nb_traps = 256;
                name_tables->trap_names = g_new(GQuark, 256);
                for(i = 0 ; i < 256 ; i++) {
                        g_string_printf(fe_name, "trap %d", i);
@@ -920,6 +933,7 @@ create_name_tables(LttvTraceState *tcs)
                }
        } else {
                name_tables->trap_names = NULL;
+               name_tables->nb_traps = 0;
        }
 
   if(!lttv_trace_find_hook(tcs->parent.t,
@@ -982,6 +996,7 @@ get_name_tables(LttvTraceState *tcs)
   tcs->syscall_names = name_tables->syscall_names;
   tcs->nb_syscalls = name_tables->nb_syscalls;
   tcs->trap_names = name_tables->trap_names;
+  tcs->nb_traps = name_tables->nb_traps;
   tcs->irq_names = name_tables->irq_names;
   tcs->soft_irq_names = name_tables->soft_irq_names;
 }
@@ -1093,10 +1108,11 @@ static void pop_state(LttvTracefileState *tfs, LttvExecutionMode t)
     g_info("process state has %s when pop_int is %s\n",
                    g_quark_to_string(process->state->t),
                    g_quark_to_string(t));
-    g_info("{ %u, %u, %s, %s }\n",
+    g_info("{ %u, %u, %s, %s, %s }\n",
                    process->pid,
                    process->ppid,
                    g_quark_to_string(process->name),
+                   g_quark_to_string(process->brand),
                    g_quark_to_string(process->state->s));
     return;
   }
@@ -1181,9 +1197,10 @@ lttv_state_create_process(LttvTraceState *tcs, LttvProcessState *parent,
   process->pid = pid;
   process->cpu = cpu;
   process->name = name;
+  process->brand = LTTV_STATE_UNBRANDED;
   //process->last_cpu = tfs->cpu_name;
   //process->last_cpu_index = ltt_tracefile_num(((LttvTracefileContext*)tfs)->tf);
-       process->kernel_thread = 0;
+       process->type = LTTV_STATE_USER_THREAD;
        process->usertrace = ltt_state_usertrace_find(tcs, pid, timestamp);
        process->current_function = 0; //function 0x0 by default.
 
@@ -1353,8 +1370,19 @@ static gboolean trap_entry(void *hook_data, void *call_data)
 
   LttvExecutionSubmode submode;
 
-  submode = ((LttvTraceState *)(s->parent.t_context))->trap_names[
-      ltt_event_get_unsigned(e, f)];
+  guint64 nb_traps = ((LttvTraceState *)(s->parent.t_context))->nb_traps;
+  guint64 trap = ltt_event_get_long_unsigned(e, f);
+
+  if(trap < nb_traps) {
+    submode = ((LttvTraceState *)(s->parent.t_context))->trap_names[trap];
+  } else {
+    /* Fixup an incomplete trap table */
+    GString *string = g_string_new("");
+    g_string_printf(string, "trap %u", trap);
+    submode = g_quark_from_string(string->str);
+    g_string_free(string, TRUE);
+  }
+
   push_state(s, LTTV_STATE_TRAP, submode);
   return FALSE;
 }
@@ -1424,7 +1452,7 @@ static gboolean soft_irq_entry(void *hook_data, void *call_data)
   LttvExecutionSubmode submode;
 
   submode = ((LttvTraceState *)(s->parent.t_context))->soft_irq_names[
-      ltt_event_get_unsigned(e, f)];
+      ltt_event_get_long_unsigned(e, f)];
 
   /* Do something with the info about being in user or system mode when int? */
   push_state(s, LTTV_STATE_SOFT_IRQ, submode);
@@ -1460,10 +1488,11 @@ static void pop_function(LttvTracefileState *tfs, guint64 funcptr)
         tfs->parent.timestamp.tv_sec, tfs->parent.timestamp.tv_nsec);
     g_info("process state has %llu when pop_function is %llu\n",
                    process->current_function, funcptr);
-    g_info("{ %u, %u, %s, %s }\n",
+    g_info("{ %u, %u, %s, %s, %s }\n",
                    process->pid,
                    process->ppid,
                    g_quark_to_string(process->name),
+                   g_quark_to_string(process->brand),
                    g_quark_to_string(process->state->s));
     return;
   }
@@ -1655,7 +1684,7 @@ static gboolean process_kernel_thread(void *hook_data, void *call_data)
   process = lttv_state_find_process(ts, ANY_CPU, pid);
        es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
        es->t = LTTV_STATE_SYSCALL;
-       process->kernel_thread = 1;
+       process->type = LTTV_STATE_KERNEL_THREAD;
 
        return FALSE;
 }
@@ -1669,13 +1698,14 @@ static gboolean process_exit(void *hook_data, void *call_data)
   guint pid;
   guint cpu = s->cpu;
   LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
-  LttvProcessState *process = ts->running_process[cpu];
+  LttvProcessState *process; // = ts->running_process[cpu];
 
   pid = ltt_event_get_unsigned(e, thf->f1);
 
   // FIXME : Add this test in the "known state" section
   // g_assert(process->pid == pid);
 
+  process = lttv_state_find_process(ts, ANY_CPU, pid);
   if(likely(process != NULL)) {
     process->state->s = LTTV_STATE_EXIT;
   }
@@ -1720,9 +1750,8 @@ static gboolean process_free(void *hook_data, void *call_data)
         break;
       }
     }
-    //if(i == num_cpus) /* process is not scheduled */
-      //exit_process(s, process);      // do nothing : wait for the schedchange to
-                       //delete the process.
+    if(i == num_cpus) /* process is not scheduled */
+      exit_process(s, process);
   }
 
   return FALSE;
@@ -1754,6 +1783,22 @@ static gboolean process_exec(void *hook_data, void *call_data)
   return FALSE;
 }
 
+static gboolean thread_brand(void *hook_data, void *call_data)
+{
+  LttvTracefileState *s = (LttvTracefileState *)call_data;
+  LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
+  LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
+  LttvTraceHookByFacility *thf = (LttvTraceHookByFacility *)hook_data;
+  gchar *name;
+  guint cpu = s->cpu;
+  LttvProcessState *process = ts->running_process[cpu];
+
+  name = ltt_event_get_string(e, thf->f1);
+  process->brand = g_quark_from_string(name);
+
+  return FALSE;
+}
+
 static gboolean enum_process_state(void *hook_data, void *call_data)
 {
   LttvTracefileState *s = (LttvTracefileState *)call_data;
@@ -1769,8 +1814,9 @@ static gboolean enum_process_state(void *hook_data, void *call_data)
   LttvTraceState *ts = (LttvTraceState*)s->parent.t_context;
   LttvProcessState *process = ts->running_process[cpu];
   LttvProcessState *parent_process;
-       LttField *f4, *f5, *f6;
-       GQuark mode, submode, status;
+       LttField *f4, *f5, *f6, *f7;
+       GQuark type, mode, submode, status;
+       LttvExecutionState *es;
 
   /* PID */
   pid = ltt_event_get_unsigned(e, thf->f1);
@@ -1781,21 +1827,26 @@ static gboolean enum_process_state(void *hook_data, void *call_data)
   /* Command name */
   command = ltt_event_get_string(e, thf->f3);
 
-       /* mode */
-       f4 = ltt_eventtype_field_by_name(et, LTT_FIELD_MODE);
-       mode = ltt_enum_string_get(ltt_field_type(f4), 
+       /* type */
+       f4 = ltt_eventtype_field_by_name(et, LTT_FIELD_TYPE);
+       type = ltt_enum_string_get(ltt_field_type(f4),
                        ltt_event_get_unsigned(e, f4));
 
-       /* submode */
-       f5 = ltt_eventtype_field_by_name(et, LTT_FIELD_SUBMODE);
-       submode = ltt_enum_string_get(ltt_field_type(f5), 
+       /* mode */
+       f5 = ltt_eventtype_field_by_name(et, LTT_FIELD_MODE);
+       mode = ltt_enum_string_get(ltt_field_type(f5), 
                        ltt_event_get_unsigned(e, f5));
 
-       /* status */
-       f6 = ltt_eventtype_field_by_name(et, LTT_FIELD_STATUS);
-       status = ltt_enum_string_get(ltt_field_type(f6), 
+       /* submode */
+       f6 = ltt_eventtype_field_by_name(et, LTT_FIELD_SUBMODE);
+       submode = ltt_enum_string_get(ltt_field_type(f6), 
                        ltt_event_get_unsigned(e, f6));
 
+       /* status */
+       f7 = ltt_eventtype_field_by_name(et, LTT_FIELD_STATUS);
+       status = ltt_enum_string_get(ltt_field_type(f7), 
+                       ltt_event_get_unsigned(e, f7));
+
   /* The process might exist if a process was forked while performing the sate dump. */
   process = lttv_state_find_process(ts, ANY_CPU, pid);
   if(process == NULL) {
@@ -1805,38 +1856,44 @@ static gboolean enum_process_state(void *hook_data, void *call_data)
                                                                                                                        &s->parent.timestamp);
        
                /* Keep the stack bottom : a running user mode */
-#if 0
                /* Disabled because of inconsistencies in the current statedump states. */
-               if(mode == LTTV_STATE_USER_MODE) {
+               if(type == LTTV_STATE_KERNEL_THREAD) {
                        /* Only keep the bottom */
                        process->execution_stack = g_array_set_size(process->execution_stack, 1);
+                       es = process->state = &g_array_index(process->execution_stack, 
+                                       LttvExecutionState, 0);
+                       es->t = LTTV_STATE_SYSCALL;
+                       es->s = status;
+                       es->n = submode;
                } else {
                        /* On top of it : */
-                       LttvExecutionState *es;
                        es = process->state = &g_array_index(process->execution_stack, 
                                        LttvExecutionState, 1);
-                       es->t = mode;
+                       es->t = LTTV_STATE_USER_MODE;
                        es->s = status;
                        es->n = submode;
                }
-#endif //0
-
+#if 0
                /* UNKNOWN STATE */
                {
-                       LttvExecutionState *es;
                        es = process->state = &g_array_index(process->execution_stack, 
                                        LttvExecutionState, 1);
                        es->t = LTTV_STATE_MODE_UNKNOWN;
                        es->s = LTTV_STATE_UNNAMED;
                        es->n = LTTV_STATE_SUBMODE_UNKNOWN;
                }
+#endif //0
   } else {
     /* The process has already been created :
                 * Probably was forked while dumping the process state or
                 * was simply scheduled in prior to get the state dump event.
+                * We know for sure if it is a user space thread.
      */
     process->ppid = parent_pid;
                process->name = g_quark_from_string(command);
+               es = &g_array_index(process->execution_stack, LttvExecutionState, 0);
+               if(type != LTTV_STATE_KERNEL_THREAD)
+                       es->t = LTTV_STATE_USER_MODE;
                /* Don't mess around with the stack, it will eventually become
                 * ok after the end of state dump. */
   }
@@ -1881,8 +1938,8 @@ void lttv_state_add_event_hooks(LttvTracesetState *self)
     /* Find the eventtype id for the following events and register the
        associated by id hooks. */
 
-    hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 17);
-    hooks = g_array_set_size(hooks, 17); // Max possible number of hooks.
+    hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 18);
+    hooks = g_array_set_size(hooks, 18); // Max possible number of hooks.
                hn = 0;
 
     ret = lttv_trace_find_hook(ts->parent.t,
@@ -1970,6 +2027,12 @@ void lttv_state_add_event_hooks(LttvTracesetState *self)
         process_exec, NULL, &g_array_index(hooks, LttvTraceHook, hn++));
                if(ret) hn--;
 
+    ret = lttv_trace_find_hook(ts->parent.t,
+        LTT_FACILITY_USER_GENERIC, LTT_EVENT_THREAD_BRAND,
+        LTT_FIELD_NAME, 0, 0,
+        thread_brand, NULL, &g_array_index(hooks, LttvTraceHook, hn++));
+               if(ret) hn--;
+
      /* statedump-related hooks */
     ret = lttv_trace_find_hook(ts->parent.t,
         LTT_FACILITY_STATEDUMP, LTT_EVENT_ENUM_PROCESS_STATE,
@@ -2622,7 +2685,8 @@ lttv_tracefile_state_get_type(void)
 
 static void module_init()
 {
-  LTTV_STATE_UNNAMED = g_quark_from_string("unnamed");
+  LTTV_STATE_UNNAMED = g_quark_from_string("UNNAMED");
+  LTTV_STATE_UNBRANDED = g_quark_from_string("UNBRANDED");
   LTTV_STATE_MODE_UNKNOWN = g_quark_from_string("MODE_UNKNOWN");
   LTTV_STATE_USER_MODE = g_quark_from_string("USER_MODE");
   LTTV_STATE_SYSCALL = g_quark_from_string("SYSCALL");
@@ -2638,6 +2702,8 @@ static void module_init()
   LTTV_STATE_WAIT = g_quark_from_string("WAIT");
   LTTV_STATE_RUN = g_quark_from_string("RUN");
   LTTV_STATE_DEAD = g_quark_from_string("DEAD");
+       LTTV_STATE_USER_THREAD = g_quark_from_string("USER_THREAD");
+       LTTV_STATE_KERNEL_THREAD = g_quark_from_string("KERNEL_THREAD");
   LTTV_STATE_TRACEFILES = g_quark_from_string("tracefiles");
   LTTV_STATE_PROCESSES = g_quark_from_string("processes");
   LTTV_STATE_PROCESS = g_quark_from_string("process");
@@ -2677,6 +2743,7 @@ static void module_init()
   LTT_EVENT_ENUM_PROCESS_STATE  = g_quark_from_string("enumerate_process_state");
   LTT_EVENT_FUNCTION_ENTRY  = g_quark_from_string("function_entry");
   LTT_EVENT_FUNCTION_EXIT  = g_quark_from_string("function_exit");
+  LTT_EVENT_THREAD_BRAND  = g_quark_from_string("thread_brand");
 
 
   LTT_FIELD_SYSCALL_ID    = g_quark_from_string("syscall_id");
@@ -2691,6 +2758,7 @@ static void module_init()
   LTT_FIELD_PID           = g_quark_from_string("pid");
   LTT_FIELD_FILENAME      = g_quark_from_string("filename");
   LTT_FIELD_NAME          = g_quark_from_string("name");
+  LTT_FIELD_TYPE          = g_quark_from_string("type");
   LTT_FIELD_MODE          = g_quark_from_string("mode");
   LTT_FIELD_SUBMODE       = g_quark_from_string("submode");
   LTT_FIELD_STATUS        = g_quark_from_string("status");
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