[sysprof/wip/chergert/sysprof-3] libsysprof: add async variant for proc source

[Christian Hergert <chergert src gnome org>]

commit d9cade5c6db3e76160404befe58b87c8aed1ddaf
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 10 20:41:28 2019 -0700

    libsysprof: add async variant for proc source

 src/libsysprof/sysprof-helpers.c | 63 ++++++++++++++++++++++++++++++++++++++++
 src/libsysprof/sysprof-helpers.h |  9 ++++++
 2 files changed, 72 insertions(+)
---
diff --git a/src/libsysprof/sysprof-helpers.c b/src/libsysprof/sysprof-helpers.c
index e82c13f..f02c63e 100644
--- a/src/libsysprof/sysprof-helpers.c
+++ b/src/libsysprof/sysprof-helpers.c
@@ -566,3 +566,66 @@ sysprof_helpers_get_process_info (SysprofHelpers  *self,
 
   return ipc_service_call_get_process_info_sync (self->proxy, attributes, info, cancellable, error);
 }
+
+static void
+sysprof_helpers_get_process_info_cb (IpcService   *service,
+                                     GAsyncResult *result,
+                                     gpointer      user_data)
+{
+  g_autoptr(GTask) task = user_data;
+  g_autoptr(GVariant) info = NULL;
+  g_autoptr(GError) error = NULL;
+
+  g_assert (IPC_IS_SERVICE (service));
+  g_assert (G_IS_ASYNC_RESULT (result));
+  g_assert (G_IS_TASK (task));
+
+  if (!ipc_service_call_get_process_info_finish (service, &info, result, &error))
+    g_task_return_error (task, g_steal_pointer (&error));
+  else
+    g_task_return_pointer (task, g_steal_pointer (&info), (GDestroyNotify)g_variant_unref);
+}
+
+void
+sysprof_helpers_get_process_info_async (SysprofHelpers      *self,
+                                        const gchar         *attributes,
+                                        GCancellable        *cancellable,
+                                        GAsyncReadyCallback  callback,
+                                        gpointer             user_data)
+{
+  g_autoptr(GTask) task = NULL;
+
+  g_assert (SYSPROF_IS_HELPERS (self));
+  g_assert (attributes != NULL);
+  g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
+
+  task = g_task_new (self, cancellable, callback, user_data);
+  g_task_set_source_tag (task, sysprof_helpers_get_process_info_async);
+
+  ipc_service_call_get_process_info (self->proxy,
+                                     attributes,
+                                     cancellable,
+                                     (GAsyncReadyCallback) sysprof_helpers_get_process_info_cb,
+                                     g_steal_pointer (&task));
+}
+
+gboolean
+sysprof_helpers_get_process_info_finish (SysprofHelpers  *self,
+                                         GAsyncResult    *result,
+                                         GVariant       **info,
+                                         GError         **error)
+{
+  g_autoptr(GVariant) ret = NULL;
+
+  g_assert (SYSPROF_IS_HELPERS (self));
+  g_assert (G_IS_TASK (result));
+
+  if ((ret = g_task_propagate_pointer (G_TASK (result), error)))
+    {
+      if (info)
+        *info = g_steal_pointer (&ret);
+      return TRUE;
+    }
+
+  return FALSE;
+}
diff --git a/src/libsysprof/sysprof-helpers.h b/src/libsysprof/sysprof-helpers.h
index 1469c2d..517ba49 100644
--- a/src/libsysprof/sysprof-helpers.h
+++ b/src/libsysprof/sysprof-helpers.h
@@ -73,6 +73,15 @@ gboolean        sysprof_helpers_get_process_info       (SysprofHelpers
                                                         GCancellable            *cancellable,
                                                         GVariant               **info,
                                                         GError                 **error);
+void            sysprof_helpers_get_process_info_async (SysprofHelpers          *self,
+                                                        const gchar             *attributes,
+                                                        GCancellable            *cancellable,
+                                                        GAsyncReadyCallback      callback,
+                                                        gpointer                 user_data);
+gboolean        sysprof_helpers_get_process_info_finish(SysprofHelpers          *self,
+                                                        GAsyncResult            *result,
+                                                        GVariant               **info,
+                                                        GError                 **error);
 #ifdef __linux__
 gboolean        sysprof_helpers_perf_event_open        (SysprofHelpers          *self,
                                                         struct perf_event_attr  *attr,