LXR qemu/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
  36void 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, false, 0, &local_err);
  44    if (local_err) {
  45        error_report_err(local_err);
  46    }
  47}
  48
  49#ifdef CONFIG_TRACE_SIMPLE
  50void 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
  74void 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, false, 0, &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
  99void 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
 117void 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}
 137