trace/trace-hmp-cmds.c

   1 /*
   2  * HMP commands related to tracing
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "monitor/hmp.h"
  27 #include "monitor/monitor.h"
  28 #include "qapi/error.h"
  29 #include "qapi/qapi-commands-trace.h"
  30 #include "qapi/qmp/qdict.h"
  31 #include "trace/control.h"
  32 #ifdef CONFIG_TRACE_SIMPLE
  33 #include "trace/simple.h"
  34 #endif
  35
  36 void hmp_trace_event(Monitor *mon, const QDict *qdict)
  37 {
  38     const char *tp_name = qdict_get_str(qdict, "name");
  39     bool new_state = qdict_get_bool(qdict, "option");
  40     bool has_vcpu = qdict_haskey(qdict, "vcpu");
  41     int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
  42     Error *local_err = NULL;
  43
  44     if (vcpu < 0) {
  45         monitor_printf(mon, "argument vcpu must be positive");
  46         return;
  47     }
  48
  49     qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
  50     if (local_err) {
  51         error_report_err(local_err);
  52     }
  53 }
  54
  55 #ifdef CONFIG_TRACE_SIMPLE
  56 void hmp_trace_file(Monitor *mon, const QDict *qdict)
  57 {
  58     const char *op = qdict_get_try_str(qdict, "op");
  59     const char *arg = qdict_get_try_str(qdict, "arg");
  60
  61     if (!op) {
  62         st_print_trace_file_status();
  63     } else if (!strcmp(op, "on")) {
  64         st_set_trace_file_enabled(true);
  65     } else if (!strcmp(op, "off")) {
  66         st_set_trace_file_enabled(false);
  67     } else if (!strcmp(op, "flush")) {
  68         st_flush_trace_buffer();
  69     } else if (!strcmp(op, "set")) {
  70         if (arg) {
  71             st_set_trace_file(arg);
  72         }
  73     } else {
  74         monitor_printf(mon, "unexpected argument \"%s\"\n", op);
  75         hmp_help_cmd(mon, "trace-file");
  76     }
  77 }
  78 #endif
  79
  80 void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
  81 {
  82     const char *name = qdict_get_try_str(qdict, "name");
  83     bool has_vcpu = qdict_haskey(qdict, "vcpu");
  84     int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
  85     TraceEventInfoList *events;
  86     TraceEventInfoList *elem;
  87     Error *local_err = NULL;
  88
  89     if (name == NULL) {
  90         name = "*";
  91     }
  92     if (vcpu < 0) {
  93         monitor_printf(mon, "argument vcpu must be positive");
  94         return;
  95     }
  96
  97     events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
  98     if (local_err) {
  99         error_report_err(local_err);
 100         return;
 101     }
 102
 103     for (elem = events; elem != NULL; elem = elem->next) {
 104         monitor_printf(mon, "%s : state %u\n",
 105                        elem->value->name,
 106                        elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
 107     }
 108     qapi_free_TraceEventInfoList(events);
 109 }
 110
 111 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
 112 {
 113     size_t len;
 114
 115     len = strlen(str);
 116     readline_set_completion_index(rs, len);
 117     if (nb_args == 2) {
 118         TraceEventIter iter;
 119         TraceEvent *ev;
 120         char *pattern = g_strdup_printf("%s*", str);
 121         trace_event_iter_init_pattern(&iter, pattern);
 122         while ((ev = trace_event_iter_next(&iter)) != NULL) {
 123             readline_add_completion(rs, trace_event_get_name(ev));
 124         }
 125         g_free(pattern);
 126     }
 127 }
 128
 129 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
 130 {
 131     size_t len;
 132
 133     len = strlen(str);
 134     readline_set_completion_index(rs, len);
 135     if (nb_args == 2) {
 136         TraceEventIter iter;
 137         TraceEvent *ev;
 138         char *pattern = g_strdup_printf("%s*", str);
 139         trace_event_iter_init_pattern(&iter, pattern);
 140         while ((ev = trace_event_iter_next(&iter)) != NULL) {
 141             readline_add_completion(rs, trace_event_get_name(ev));
 142         }
 143         g_free(pattern);
 144     } else if (nb_args == 3) {
 145         readline_add_completion_of(rs, str, "on");
 146         readline_add_completion_of(rs, str, "off");
 147     }
 148 }