| 1 | #ifndef BABELTRACE_CTF_IR_TRACE_INTERNAL_H |
| 2 | #define BABELTRACE_CTF_IR_TRACE_INTERNAL_H |
| 3 | |
| 4 | /* |
| 5 | * BabelTrace - CTF IR: Trace internal |
| 6 | * |
| 7 | * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 8 | * |
| 9 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 10 | * |
| 11 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 12 | * of this software and associated documentation files (the "Software"), to deal |
| 13 | * in the Software without restriction, including without limitation the rights |
| 14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 15 | * copies of the Software, and to permit persons to whom the Software is |
| 16 | * furnished to do so, subject to the following conditions: |
| 17 | * |
| 18 | * The above copyright notice and this permission notice shall be included in |
| 19 | * all copies or substantial portions of the Software. |
| 20 | * |
| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 27 | * SOFTWARE. |
| 28 | */ |
| 29 | |
| 30 | #include <babeltrace/assert-pre-internal.h> |
| 31 | #include <babeltrace/ctf-ir/trace.h> |
| 32 | #include <babeltrace/ctf-ir/stream-class-internal.h> |
| 33 | #include <babeltrace/ctf-ir/field-types.h> |
| 34 | #include <babeltrace/ctf-ir/fields.h> |
| 35 | #include <babeltrace/ctf-ir/validation-internal.h> |
| 36 | #include <babeltrace/ctf-ir/attributes-internal.h> |
| 37 | #include <babeltrace/ctf-ir/clock-class-internal.h> |
| 38 | #include <babeltrace/object-internal.h> |
| 39 | #include <babeltrace/object-pool-internal.h> |
| 40 | #include <babeltrace/babeltrace-internal.h> |
| 41 | #include <babeltrace/values.h> |
| 42 | #include <babeltrace/types.h> |
| 43 | #include <glib.h> |
| 44 | #include <sys/types.h> |
| 45 | #include <babeltrace/compat/uuid-internal.h> |
| 46 | |
| 47 | struct bt_trace { |
| 48 | struct bt_object base; |
| 49 | GString *name; |
| 50 | int frozen; |
| 51 | unsigned char uuid[BABELTRACE_UUID_LEN]; |
| 52 | bt_bool uuid_set; |
| 53 | enum bt_byte_order native_byte_order; |
| 54 | struct bt_value *environment; |
| 55 | GPtrArray *clock_classes; /* Array of pointers to bt_clock_class */ |
| 56 | GPtrArray *stream_classes; /* Array of ptrs to bt_stream_class */ |
| 57 | GPtrArray *streams; /* Array of ptrs to bt_stream */ |
| 58 | struct bt_field_type *packet_header_field_type; |
| 59 | int64_t next_stream_id; |
| 60 | |
| 61 | /* |
| 62 | * This flag indicates if the trace is valid. A valid |
| 63 | * trace is _always_ frozen. |
| 64 | */ |
| 65 | int valid; |
| 66 | |
| 67 | GPtrArray *listeners; /* Array of struct listener_wrapper */ |
| 68 | GArray *is_static_listeners; |
| 69 | bt_bool is_static; |
| 70 | bt_bool in_remove_listener; |
| 71 | |
| 72 | /* Pool of `struct bt_field_wrapper *` */ |
| 73 | struct bt_object_pool packet_header_field_pool; |
| 74 | }; |
| 75 | |
| 76 | BT_HIDDEN |
| 77 | int bt_trace_object_modification(struct bt_visitor_object *object, |
| 78 | void *trace_ptr); |
| 79 | |
| 80 | BT_HIDDEN |
| 81 | bt_bool bt_trace_has_clock_class(struct bt_trace *trace, |
| 82 | struct bt_clock_class *clock_class); |
| 83 | |
| 84 | /** |
| 85 | @brief User function type to use with bt_trace_add_listener(). |
| 86 | |
| 87 | @param[in] obj New CTF IR object which is part of the trace |
| 88 | class hierarchy. |
| 89 | @param[in] data User data. |
| 90 | |
| 91 | @prenotnull{obj} |
| 92 | */ |
| 93 | typedef void (*bt_listener_cb)(struct bt_visitor_object *obj, void *data); |
| 94 | |
| 95 | /** |
| 96 | @brief Adds the trace class modification listener \p listener to |
| 97 | the CTF IR trace class \p trace_class. |
| 98 | |
| 99 | Once you add \p listener to \p trace_class, whenever \p trace_class |
| 100 | is modified, \p listener is called with the new element and with |
| 101 | \p data (user data). |
| 102 | |
| 103 | @param[in] trace_class Trace class to which to add \p listener. |
| 104 | @param[in] listener Modification listener function. |
| 105 | @param[in] data User data. |
| 106 | @returns 0 on success, or a negative value on error. |
| 107 | |
| 108 | @prenotnull{trace_class} |
| 109 | @prenotnull{listener} |
| 110 | @postrefcountsame{trace_class} |
| 111 | */ |
| 112 | BT_HIDDEN |
| 113 | int bt_trace_add_listener(struct bt_trace *trace_class, |
| 114 | bt_listener_cb listener, void *data); |
| 115 | |
| 116 | static inline |
| 117 | void bt_trace_freeze(struct bt_trace *trace) |
| 118 | { |
| 119 | int i; |
| 120 | |
| 121 | if (trace->frozen) { |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | BT_LOGD("Freezing trace: addr=%p, name=\"%s\"", |
| 126 | trace, bt_trace_get_name(trace)); |
| 127 | BT_LOGD_STR("Freezing packet header field type."); |
| 128 | bt_field_type_freeze(trace->packet_header_field_type); |
| 129 | BT_LOGD_STR("Freezing environment attributes."); |
| 130 | bt_attributes_freeze(trace->environment); |
| 131 | |
| 132 | if (trace->clock_classes->len > 0) { |
| 133 | BT_LOGD_STR("Freezing clock classes."); |
| 134 | } |
| 135 | |
| 136 | for (i = 0; i < trace->clock_classes->len; i++) { |
| 137 | struct bt_clock_class *clock_class = |
| 138 | g_ptr_array_index(trace->clock_classes, i); |
| 139 | |
| 140 | bt_clock_class_freeze(clock_class); |
| 141 | } |
| 142 | |
| 143 | trace->frozen = 1; |
| 144 | } |
| 145 | |
| 146 | #endif /* BABELTRACE_CTF_IR_TRACE_INTERNAL_H */ |