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| 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 | +} |
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