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 } 149