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[qemu.git] / stubs / trace-control.c
1 /*
2  * Interface for configuring and controlling the state of tracing events.
3  *
4  * Copyright (C) 2014-2016 LluĂ­s Vilanova <[email protected]>
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 }
47
48 void trace_init_vcpu(CPUState *vcpu)
49 {
50     /* should never be called on non-target binaries */
51     abort();
52 }
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