libsysprof-profile: add SysprofDiagnostic to recordings

This allows instruments to record a diagnostic and have it land as an
object in a GListModel of diagnostics available to the API consumer.

Such items may be used by recording UI to display issues with the recording
to the user.

src/libsysprof-profile/sysprof-diagnostic.c

@@ -0,0 +1,151 @@
+/* sysprof-diagnostic.c
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include "sysprof-diagnostic-private.h"
+
+struct _SysprofDiagnostic
+{
+  GObject parent_instance;
+  GRefString *domain;
+  char *message;
+  guint fatal : 1;
+};
+
+enum {
+  PROP_0,
+  PROP_DOMAIN,
+  PROP_MESSAGE,
+  PROP_FATAL,
+  N_PROPS
+};
+
+G_DEFINE_FINAL_TYPE (SysprofDiagnostic, sysprof_diagnostic, G_TYPE_OBJECT)
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+sysprof_diagnostic_finalize (GObject *object)
+{
+  SysprofDiagnostic *self = (SysprofDiagnostic *)object;
+
+  g_clear_pointer (&self->domain, g_free);
+  g_clear_pointer (&self->message, g_free);
+
+  G_OBJECT_CLASS (sysprof_diagnostic_parent_class)->finalize (object);
+}
+
+static void
+sysprof_diagnostic_get_property (GObject    *object,
+                                 guint       prop_id,
+                                 GValue     *value,
+                                 GParamSpec *pspec)
+{
+  SysprofDiagnostic *self = SYSPROF_DIAGNOSTIC (object);
+
+  switch (prop_id)
+    {
+    case PROP_DOMAIN:
+      g_value_set_string (value, self->domain);
+      break;
+
+    case PROP_MESSAGE:
+      g_value_set_string (value, self->message);
+      break;
+
+    case PROP_FATAL:
+      g_value_set_boolean (value, self->fatal);
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sysprof_diagnostic_class_init (SysprofDiagnosticClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->finalize = sysprof_diagnostic_finalize;
+  object_class->get_property = sysprof_diagnostic_get_property;
+
+  properties [PROP_DOMAIN] =
+    g_param_spec_string ("domain", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_MESSAGE] =
+    g_param_spec_string ("message", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  properties [PROP_FATAL] =
+    g_param_spec_boolean ("fatal", NULL, NULL,
+                          FALSE,
+                          (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+sysprof_diagnostic_init (SysprofDiagnostic *self)
+{
+}
+
+const char *
+sysprof_diagnostic_get_domain (SysprofDiagnostic *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DIAGNOSTIC (self), NULL);
+
+  return self->domain;
+}
+
+const char *
+sysprof_diagnostic_get_message (SysprofDiagnostic *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DIAGNOSTIC (self), NULL);
+
+  return self->message;
+}
+
+gboolean
+sysprof_diagnostic_get_fatal (SysprofDiagnostic *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_DIAGNOSTIC (self), FALSE);
+
+  return self->fatal;
+}
+
+SysprofDiagnostic *
+_sysprof_diagnostic_new (char     *domain,
+                         char     *message,
+                         gboolean  fatal)
+{
+  SysprofDiagnostic *self;
+
+  self = g_object_new (SYSPROF_TYPE_DIAGNOSTIC, NULL);
+  self->message = message;
+  self->domain = domain;
+  self->fatal = !!fatal;
+
+  return self;
+}