--- /dev/null
+#include <lttv/option.h>
+#include <lttv/module.h>
+#include <lttv/hook.h>
+#include <lttv/attribute.h>
+#include <lttv/iattribute.h>
+#include <lttv/stats.h>
+#include <lttv/filter.h>
+#include <ltt/ltt.h>
+#include <ltt/event.h>
+#include <ltt/trace.h>
+#include <stdio.h>
+#include <math.h>
+#include "realtime.h"
+
+int application_pid;
+long period_sec, period_nsec, running_time_sec, running_time_nsec;
+long t2_sec, t2_nsec;
+GArray *fsm_list;
+struct timeval *tv1, *tv2;
+
+static gboolean schedule(void *hook_data, void *call_data){
+ LttvTracefileState *s = (LttvTracefileState *) call_data;
+ LttEvent *e = ltt_tracefile_get_event(s->parent.tf);
+ LttvTraceHook *th = (LttvTraceHook *)hook_data;
+
+ struct marker_field *f = lttv_trace_get_hook_field(th,0);
+ guint32 prev_pid = ltt_event_get_long_unsigned(e, f);
+
+ f = lttv_trace_get_hook_field(th, 1);
+ guint32 next_pid = ltt_event_get_long_unsigned(e, f);
+
+ LttTime time = ltt_event_time(e);
+ t2_sec=(long)time.tv_sec;
+ t2_nsec=(long)time.tv_nsec;
+ struct realtime *rtstruct;
+ if(application_pid==-1){
+ //iterate over all fsms
+ int i, found=0;
+
+ for(i=0; i<fsm_list->len; i++)
+ {
+ rtstruct = g_array_index(fsm_list, struct realtime *, i);
+ if(rtstruct->pid==next_pid){
+ found=1;
+ realtimeContext_schedule_in(&rtstruct->_fsm, t2_sec, t2_nsec);
+ break;
+ }
+ else if(rtstruct->pid==prev_pid){
+ found=1;
+ realtimeContext_schedule_out(&rtstruct->_fsm, t2_sec, t2_nsec);
+ break;
+ }
+
+ }
+ if(!found){
+ rtstruct = realtime_Init(next_pid, DEFAULT_PERIOD_SEC,
+ DEFAULT_PERIOD_NSEC,
+ DEFAULT_RUNNING_TIME_SEC,
+ DEFAULT_RUNNING_TIME_NSEC);
+ g_array_append_val(fsm_list, rtstruct);
+ //call transition
+ realtimeContext_schedule_in(&rtstruct->_fsm, t2_sec, t2_nsec);
+
+ }
+ }
+
+ else//we might have already created the fsm so check @ first
+ {
+ if(fsm_list->len==0){
+ rtstruct = realtime_Init(application_pid, period_sec, period_nsec, running_time_sec, running_time_nsec);
+ g_array_append_val(fsm_list, rtstruct);
+
+ }
+ else
+ rtstruct = g_array_index(fsm_list, struct realtime *, 0);
+
+
+ if(rtstruct->pid==next_pid)
+ realtimeContext_schedule_in(&rtstruct->_fsm, t2_sec, t2_nsec);
+ else if(rtstruct->pid==prev_pid)
+ realtimeContext_schedule_out(&rtstruct->_fsm, t2_sec, t2_nsec);
+ }
+ return FALSE;
+}
+void removefsm(struct realtime *rtstruct){
+ int i;
+ for(i=0; i<fsm_list->len; i++){
+ struct realtime *tmp = g_array_index(fsm_list,struct realtime *, i);
+ if(tmp==rtstruct){
+ g_array_remove_index(fsm_list,i);
+ break;
+ }
+ }
+
+}
+static int add_events_by_id_hooks(void *hook_data, void *call_data){
+ LttvTraceContext *tc = (LttvTraceContext *) call_data;
+ LttTrace *t = tc->t;
+
+ //EVENT CHROOT
+ GQuark LTT_FACILITY_KERNEL = g_quark_from_string("kernel");
+ GQuark LTT_EVENT_SCHED_SCHEDULE = g_quark_from_string("sched_schedule");
+ //EVENT FIELDS
+ GQuark LTT_FIELD_PREV_PID = g_quark_from_string("prev_pid");
+ GQuark LTT_FIELD_NEXT_PID = g_quark_from_string("next_pid");
+ GQuark LTT_FIELD_PREV_STATE = g_quark_from_string("prev_state");
+
+
+ GArray *hooks = g_array_sized_new(FALSE, FALSE, sizeof(LttvTraceHook), 1);
+
+ lttv_trace_find_hook(t, LTT_FACILITY_KERNEL, LTT_EVENT_SCHED_SCHEDULE,
+ FIELD_ARRAY(LTT_FIELD_PREV_PID, LTT_FIELD_NEXT_PID, LTT_FIELD_PREV_STATE),
+ schedule,
+ NULL,
+ &hooks);
+
+ int nb_tracefiles = tc->tracefiles->len;
+ LttvTracefileContext **tfc;
+ LttvHooks *needed_hooks;
+ LttvTraceHook *th = (LttvTraceHook *)hook_data;
+ int i, j;
+ for(i=0; i<nb_tracefiles; i++){
+ tfc = &g_array_index(tc->tracefiles, LttvTracefileContext*, i);
+ for(j=0; j<hooks->len; j++){
+ th=&g_array_index(hooks, LttvTraceHook, j);
+ needed_hooks = lttv_hooks_by_id_find((*tfc)->event_by_id, th->id);
+ lttv_hooks_add(needed_hooks, th->h, th, LTTV_PRIO_DEFAULT);
+ }
+ }
+}
+static void init(){
+
+ gboolean result;
+
+ LttvAttributeValue value;
+
+ LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes());
+
+ static LttvHooks *before_trace;
+
+ result = lttv_iattribute_find_by_path(attributes, "hooks/trace/before", LTTV_POINTER, &value);
+ g_assert(result);
+before_trace = *(value.v_pointer);
+g_assert(before_trace);
+
+ //Register add_events_by_id_hook to be called before starting to read the trace
+ //This function will be overwritten between checkers
+ lttv_hooks_add(before_trace, add_events_by_id_hooks, NULL, LTTV_PRIO_DEFAULT);
+
+ printf("Enter your real-time application ip (-1 for all)\n");
+ scanf("%d", &application_pid);
+ if(application_pid!=-1)
+ {
+ printf("Enter period_sec, period_nsec, running_time_sec, running_time_nsec:\n");
+ //scanf("%ld%ld%ld%ld", &period_sec, &period_nsec, &running_time_sec, &running_time_nsec);
+ period_sec=1;
+ period_nsec=0;
+ running_time_sec=0;
+ running_time_nsec=500000;
+
+ }
+ tv1 = (struct timeval *)malloc(sizeof(struct timeval));
+ gettimeofday(tv1, NULL);
+
+ fsm_list = g_array_new(FALSE, FALSE, sizeof(struct realtime *));
+}
+static void destroy(){
+ tv2 = (struct timeval *)malloc(sizeof(struct timeval));
+ gettimeofday(tv2, NULL);
+ int seconds = tv2->tv_sec - tv1->tv_sec;
+ printf("analysis took: %d seconds \n", seconds);
+
+
+}
+
+LTTV_MODULE("rt_checker", "Detects scheduling latencies",
+ "detects latencies",
+ init, destroy, "stats", "batchAnalysis", "option")
+
projects / lttv.git / blobdiff