stubs/trace-control.c

   1 /*
   2  * Interface for configuring and controlling the state of tracing events.
   3  *
   4  * Copyright (C) 2014-2016 Lluís Vilanova <vilanova@ac.upc.edu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "trace/control.h"
  12
  13
  14 void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state)
  15 {
  16     trace_event_set_state_dynamic(ev, state);
  17 }
  18
  19 void trace_event_set_state_dynamic(TraceEvent *ev, bool state)
  20 {
  21     TraceEventID id;
  22     bool state_pre;
  23     assert(trace_event_get_state_static(ev));
  24     id = trace_event_get_id(ev);
  25     /*
  26      * We ignore the "vcpu" property here, since there's no target code. Then
  27      * dstate can only be 1 or 0.
  28      */
  29     state_pre = trace_events_dstate[id];
  30     if (state_pre != state) {
  31         if (state) {
  32             trace_events_enabled_count++;
  33             trace_events_dstate[id] = 1;
  34         } else {
  35             trace_events_enabled_count--;
  36             trace_events_dstate[id] = 0;
  37         }
  38     }
  39 }
  40
  41 void trace_event_set_vcpu_state_dynamic(CPUState *vcpu,
  42                                         TraceEvent *ev, bool state)
  43 {
  44     /* should never be called on non-target binaries */
  45     abort();
  46 }