Port: Fix libuuid compat on mingw
[babeltrace.git] / lib / ctf-ir / trace.c
index 890e12c4d1ad67c01a2fd64cc164d4e4ee938396..37fa2763f93859fb265cabdfb15c40ee50c6428b 100644 (file)
@@ -52,6 +52,7 @@
 #include <inttypes.h>
 #include <stdint.h>
 #include <string.h>
+#include <stdlib.h>
 
 #define DEFAULT_IDENTIFIER_SIZE 128
 #define DEFAULT_METADATA_STRING_SIZE 4096
@@ -61,6 +62,11 @@ struct listener_wrapper {
        void *data;
 };
 
+struct bt_ctf_trace_is_static_listener_elem {
+       bt_ctf_trace_is_static_listener func;
+       void *data;
+};
+
 static
 void bt_ctf_trace_destroy(struct bt_object *obj);
 static
@@ -87,7 +93,6 @@ const unsigned int field_type_aliases_sizes[] = {
 struct bt_ctf_trace *bt_ctf_trace_create(void)
 {
        struct bt_ctf_trace *trace = NULL;
-       struct bt_ctf_field_type *packet_header_type = NULL;
 
        trace = g_new0(struct bt_ctf_trace, 1);
        if (!trace) {
@@ -96,7 +101,7 @@ struct bt_ctf_trace *bt_ctf_trace_create(void)
        }
 
        BT_LOGD_STR("Creating trace object.");
-       trace->native_byte_order = BT_CTF_BYTE_ORDER_NATIVE;
+       trace->native_byte_order = BT_CTF_BYTE_ORDER_NONE;
        bt_object_init(trace, bt_ctf_trace_destroy);
        trace->clocks = g_ptr_array_new_with_free_func(
                (GDestroyNotify) bt_put);
@@ -119,13 +124,6 @@ struct bt_ctf_trace *bt_ctf_trace_create(void)
                goto error;
        }
 
-       packet_header_type = bt_ctf_field_type_structure_create();
-       if (!packet_header_type) {
-               goto error;
-       }
-
-       BT_MOVE(trace->packet_header_type, packet_header_type);
-
        /* Create the environment array object */
        trace->environment = bt_ctf_attributes_create();
        if (!trace->environment) {
@@ -140,12 +138,18 @@ struct bt_ctf_trace *bt_ctf_trace_create(void)
                goto error;
        }
 
+       trace->is_static_listeners = g_array_new(FALSE, TRUE,
+               sizeof(struct bt_ctf_trace_is_static_listener_elem));
+       if (!trace->is_static_listeners) {
+               BT_LOGE_STR("Failed to allocate one GArray.");
+               goto error;
+       }
+
        BT_LOGD("Created trace object: addr=%p", trace);
        return trace;
 
 error:
        BT_PUT(trace);
-       bt_put(packet_header_type);
        return trace;
 }
 
@@ -234,7 +238,7 @@ int bt_ctf_trace_set_uuid(struct bt_ctf_trace *trace, const unsigned char *uuid)
                goto end;
        }
 
-       memcpy(trace->uuid, uuid, sizeof(uuid_t));
+       memcpy(trace->uuid, uuid, BABELTRACE_UUID_LEN);
        trace->uuid_set = BT_TRUE;
        BT_LOGV("Set trace's UUID: addr=%p, name=\"%s\", "
                "uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\"",
@@ -297,6 +301,10 @@ void bt_ctf_trace_destroy(struct bt_object *obj)
                g_ptr_array_free(trace->listeners, TRUE);
        }
 
+       if (trace->is_static_listeners) {
+               g_array_free(trace->is_static_listeners, TRUE);
+       }
+
        BT_LOGD_STR("Putting packet header field type.");
        bt_put(trace->packet_header_type);
        g_free(trace);
@@ -1105,17 +1113,6 @@ int bt_ctf_trace_add_stream_class(struct bt_ctf_trace *trace,
                stream_class, bt_ctf_stream_class_get_name(stream_class),
                bt_ctf_stream_class_get_id(stream_class));
 
-       /*
-        * At the end of this function we freeze the trace, so its
-        * native byte order must NOT be BT_CTF_BYTE_ORDER_NATIVE.
-        */
-       if (trace->native_byte_order == BT_CTF_BYTE_ORDER_NATIVE) {
-               BT_LOGW_STR("Invalid parameter: trace's byte order cannot be BT_CTF_BYTE_ORDER_NATIVE at this point; "
-                       "set it with bt_ctf_trace_set_native_byte_order().");
-               ret = -1;
-               goto end;
-       }
-
        current_parent_trace = bt_ctf_stream_class_get_trace(stream_class);
        if (current_parent_trace) {
                /* Stream class is already associated to a trace, abort. */
@@ -1630,7 +1627,7 @@ const char *get_byte_order_string(enum bt_ctf_byte_order byte_order)
                string = "native";
                break;
        default:
-               assert(BT_FALSE);
+               abort();
        }
 
        return string;
@@ -1643,8 +1640,9 @@ int append_trace_metadata(struct bt_ctf_trace *trace,
        unsigned char *uuid = trace->uuid;
        int ret = 0;
 
-       if (trace->native_byte_order == BT_CTF_BYTE_ORDER_NATIVE) {
-               BT_LOGW("Invalid parameter: trace's byte order cannot be BT_CTF_BYTE_ORDER_NATIVE at this point; "
+       if (trace->native_byte_order == BT_CTF_BYTE_ORDER_NATIVE ||
+                       trace->native_byte_order == BT_CTF_BYTE_ORDER_NONE) {
+               BT_LOGW("Invalid parameter: trace's byte order cannot be BT_CTF_BYTE_ORDER_NATIVE or BT_CTF_BYTE_ORDER_NONE at this point; "
                        "set it with bt_ctf_trace_set_native_byte_order(): "
                        "addr=%p, name=\"%s\"",
                        trace, bt_ctf_trace_get_name(trace));
@@ -1846,6 +1844,15 @@ int bt_ctf_trace_set_native_byte_order(struct bt_ctf_trace *trace,
                goto end;
        }
 
+       if (trace->is_created_by_writer &&
+                       byte_order == BT_CTF_BYTE_ORDER_NONE) {
+               BT_LOGW("Invalid parameter: BT_CTF_BYTE_ORDER_NONE byte order is not allowed for a CTF writer trace: "
+                       "addr=%p, name=\"%s\"",
+                       trace, bt_ctf_trace_get_name(trace));
+               ret = -1;
+               goto end;
+       }
+
        if (byte_order != BT_CTF_BYTE_ORDER_LITTLE_ENDIAN &&
                        byte_order != BT_CTF_BYTE_ORDER_BIG_ENDIAN &&
                        byte_order != BT_CTF_BYTE_ORDER_NETWORK) {
@@ -2106,6 +2113,7 @@ end:
 int bt_ctf_trace_set_is_static(struct bt_ctf_trace *trace)
 {
        int ret = 0;
+       size_t i;
 
        if (!trace) {
                BT_LOGW_STR("Invalid parameter: trace is NULL.");
@@ -2118,6 +2126,123 @@ int bt_ctf_trace_set_is_static(struct bt_ctf_trace *trace)
        BT_LOGV("Set trace static: addr=%p, name=\"%s\"",
                trace, bt_ctf_trace_get_name(trace));
 
+       /* Call all the "trace is static" listeners */
+       for (i = 0; i < trace->is_static_listeners->len; i++) {
+               struct bt_ctf_trace_is_static_listener_elem elem =
+                       g_array_index(trace->is_static_listeners,
+                               struct bt_ctf_trace_is_static_listener_elem, i);
+
+               if (elem.func) {
+                       elem.func(trace, elem.data);
+               }
+       }
+
+end:
+       return ret;
+}
+
+int bt_ctf_trace_add_is_static_listener(struct bt_ctf_trace *trace,
+               bt_ctf_trace_is_static_listener listener, void *data)
+{
+       int i;
+       struct bt_ctf_trace_is_static_listener_elem new_elem = {
+               .func = listener,
+               .data = data,
+       };
+
+       if (!trace) {
+               BT_LOGW_STR("Invalid parameter: trace is NULL.");
+               i = -1;
+               goto end;
+       }
+
+       if (!listener) {
+               BT_LOGW_STR("Invalid parameter: listener is NULL.");
+               i = -1;
+               goto end;
+       }
+
+       if (trace->is_static) {
+               BT_LOGW("Invalid parameter: trace is already static: "
+                       "addr=%p, name=\"%s\"",
+                       trace, bt_ctf_trace_get_name(trace));
+               i = -1;
+               goto end;
+       }
+
+       /* Find the next available spot */
+       for (i = 0; i < trace->is_static_listeners->len; i++) {
+               struct bt_ctf_trace_is_static_listener_elem elem =
+                       g_array_index(trace->is_static_listeners,
+                               struct bt_ctf_trace_is_static_listener_elem, i);
+
+               if (!elem.func) {
+                       break;
+               }
+       }
+
+       if (i == trace->is_static_listeners->len) {
+               g_array_append_val(trace->is_static_listeners, new_elem);
+       } else {
+               g_array_insert_val(trace->is_static_listeners, i, new_elem);
+       }
+
+       BT_LOGV("Added \"trace is static\" listener: "
+               "trace-addr=%p, trace-name=\"%s\", func-addr=%p, "
+               "data-addr=%p, listener-id=%d",
+               trace, bt_ctf_trace_get_name(trace), listener, data, i);
+
+end:
+       return i;
+}
+
+int bt_ctf_trace_remove_is_static_listener(
+               struct bt_ctf_trace *trace, int listener_id)
+{
+       int ret = 0;
+       struct bt_ctf_trace_is_static_listener_elem *elem;
+
+       if (!trace) {
+               BT_LOGW_STR("Invalid parameter: trace is NULL.");
+               ret = -1;
+               goto end;
+       }
+
+       if (listener_id < 0) {
+               BT_LOGW("Invalid listener ID: must be zero or positive: "
+                       "listener-id=%d", listener_id);
+               ret = -1;
+               goto end;
+       }
+
+       if (listener_id >= trace->is_static_listeners->len) {
+               BT_LOGW("Invalid parameter: no listener with this listener ID: "
+                       "addr=%p, name=\"%s\", listener-id=%d",
+                       trace, bt_ctf_trace_get_name(trace),
+                       listener_id);
+               ret = -1;
+               goto end;
+       }
+
+       elem = &g_array_index(trace->is_static_listeners,
+                       struct bt_ctf_trace_is_static_listener_elem,
+                       listener_id);
+       if (!elem->func) {
+               BT_LOGW("Invalid parameter: no listener with this listener ID: "
+                       "addr=%p, name=\"%s\", listener-id=%d",
+                       trace, bt_ctf_trace_get_name(trace),
+                       listener_id);
+               ret = -1;
+               goto end;
+       }
+
+       elem->func = NULL;
+       elem->data = NULL;
+       BT_LOGV("Removed \"trace is static\" listener: "
+               "trace-addr=%p, trace-name=\"%s\", "
+               "listener-id=%d", trace, bt_ctf_trace_get_name(trace),
+               listener_id);
+
 end:
        return ret;
 }
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