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     Error *local_err = NULL;
  41
  42     qmp_trace_event_set_state(tp_name, new_state,
  43                               true, true, &local_err);
  44     if (local_err) {
  45         error_report_err(local_err);
  46     }
  47 }
  48
  49 #ifdef CONFIG_TRACE_SIMPLE
  50 void hmp_trace_file(Monitor *mon, const QDict *qdict)
  51 {
  52     const char *op = qdict_get_try_str(qdict, "op");
  53     const char *arg = qdict_get_try_str(qdict, "arg");
  54
  55     if (!op) {
  56         st_print_trace_file_status();
  57     } else if (!strcmp(op, "on")) {
  58         st_set_trace_file_enabled(true);
  59     } else if (!strcmp(op, "off")) {
  60         st_set_trace_file_enabled(false);
  61     } else if (!strcmp(op, "flush")) {
  62         st_flush_trace_buffer();
  63     } else if (!strcmp(op, "set")) {
  64         if (arg) {
  65             st_set_trace_file(arg);
  66         }
  67     } else {
  68         monitor_printf(mon, "unexpected argument \"%s\"\n", op);
  69         hmp_help_cmd(mon, "trace-file");
  70     }
  71 }
  72 #endif
  73
  74 void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
  75 {
  76     const char *name = qdict_get_try_str(qdict, "name");
  77     TraceEventInfoList *events;
  78     TraceEventInfoList *elem;
  79     Error *local_err = NULL;
  80
  81     if (name == NULL) {
  82         name = "*";
  83     }
  84
  85     events = qmp_trace_event_get_state(name, &local_err);
  86     if (local_err) {
  87         error_report_err(local_err);
  88         return;
  89     }
  90
  91     for (elem = events; elem != NULL; elem = elem->next) {
  92         monitor_printf(mon, "%s : state %u\n",
  93                        elem->value->name,
  94                        elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
  95     }
  96     qapi_free_TraceEventInfoList(events);
  97 }
  98
  99 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
 100 {
 101     size_t len;
 102
 103     len = strlen(str);
 104     readline_set_completion_index(rs, len);
 105     if (nb_args == 2) {
 106         TraceEventIter iter;
 107         TraceEvent *ev;
 108         char *pattern = g_strdup_printf("%s*", str);
 109         trace_event_iter_init_pattern(&iter, pattern);
 110         while ((ev = trace_event_iter_next(&iter)) != NULL) {
 111             readline_add_completion(rs, trace_event_get_name(ev));
 112         }
 113         g_free(pattern);
 114     }
 115 }
 116
 117 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
 118 {
 119     size_t len;
 120
 121     len = strlen(str);
 122     readline_set_completion_index(rs, len);
 123     if (nb_args == 2) {
 124         TraceEventIter iter;
 125         TraceEvent *ev;
 126         char *pattern = g_strdup_printf("%s*", str);
 127         trace_event_iter_init_pattern(&iter, pattern);
 128         while ((ev = trace_event_iter_next(&iter)) != NULL) {
 129             readline_add_completion(rs, trace_event_get_name(ev));
 130         }
 131         g_free(pattern);
 132     } else if (nb_args == 3) {
 133         readline_add_completion_of(rs, str, "on");
 134         readline_add_completion_of(rs, str, "off");
 135     }
 136 }