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 } 137