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Merge branch 'async-texture-thread-pool'

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This commit is contained in:
Øyvind Kolås 2009-03-16 00:40:27 +00:00
commit 0674fded7f
3 changed files with 364 additions and 131 deletions
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386
clutter/clutter-texture.c
View File

@ -73,6 +73,8 @@ G_DEFINE_TYPE_WITH_CODE (ClutterTexture,
#define CLUTTER_TEXTURE_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_TEXTURE, ClutterTexturePrivate))
typedef struct _ClutterTextureAsyncData ClutterTextureAsyncData;
struct _ClutterTexturePrivate
{
gint width;
@ -97,14 +99,37 @@ struct _ClutterTexturePrivate
guint repeat_y : 1;
guint in_dispose : 1;
guint keep_aspect_ratio : 1;
guint load_async : 1;
guint load_size_async : 1;
guint load_data_async : 1;
guint load_async_set : 1; /* used to make load_async
possible */
GThread *load_thread;
ClutterTextureAsyncData *async_data;
};
struct _ClutterTextureAsyncData
{
/* Mutex used to synchronize setting the abort flag */
GMutex *mutex;
/* If set to true, the loaded data will be discarded */
gboolean abort;
/* The texture for which the data is being loaded */
ClutterTexture *texture;
/* Source ID of the idle handler for loading. If this is zero then
the data is being loaded in a thread from the thread pool. Once
the thread is finished it will be converted to idle load handler
and load_idle will be nonzero. If load_idle is nonzero then the
rest of the load can safely be aborted by just removing the
source, otherwise the abort flag needs to be set and the data
should be disowned */
guint load_idle;
gchar *load_filename;
CoglBitmap *load_bitmap;
GError *load_error;
gboolean abort;
};
enum
@ -121,7 +146,8 @@ enum
PROP_COGL_MATERIAL,
PROP_FILENAME,
PROP_KEEP_ASPECT_RATIO,
PROP_LOAD_ASYNC
PROP_LOAD_ASYNC,
PROP_LOAD_DATA_ASYNC,
};
enum
@ -130,12 +156,13 @@ enum
PIXBUF_CHANGE,
LOAD_SUCCESS,
LOAD_FINISHED,
LAST_SIGNAL
};
static int texture_signals[LAST_SIGNAL] = { 0 };
static GThreadPool *async_thread_pool = NULL;
static void
texture_fbo_free_resources (ClutterTexture *texture);
@ -630,6 +657,29 @@ clutter_texture_paint (ClutterActor *self)
0, 0, t_w, t_h);
}
static void
clutter_texture_async_data_free (ClutterTextureAsyncData *data)
{
/* This function should only be called either from the main thread
once it is known that the load thread has completed or from the
load thread itself if the abort flag is true (in which case the
main thread has disowned the data) */
if (data->load_filename)
g_free (data->load_filename);
if (data->load_bitmap)
cogl_bitmap_free (data->load_bitmap);
if (data->load_error)
g_error_free (data->load_error);
if (data->mutex)
g_mutex_free (data->mutex);
g_slice_free (ClutterTextureAsyncData, data);
}
/*
* clutter_texture_async_load_cancel:
* @texture: a #ClutterTexture
@ -642,32 +692,40 @@ clutter_texture_async_load_cancel (ClutterTexture *texture)
{
ClutterTexturePrivate *priv = texture->priv;
if (priv->load_thread)
if (priv->async_data)
{
priv->abort = TRUE;
g_thread_join (priv->load_thread);
priv->load_thread = NULL;
GMutex *mutex = priv->async_data->mutex;
/* The mutex will only be NULL if the no thread was used for
this load, in which case there's no need for any
synchronization */
if (mutex)
g_mutex_lock (mutex);
/* If there is no thread behind this load then we can just abort
the idle handler and destroy the load data immediately */
if (priv->async_data->load_idle)
{
g_source_remove (priv->async_data->load_idle);
priv->async_data->load_idle = 0;
if (mutex)
g_mutex_unlock (mutex);
clutter_texture_async_data_free (priv->async_data);
}
else
{
/* Otherwise we need to tell the thread to abort and disown
the data */
priv->async_data->abort = TRUE;
if (mutex)
g_mutex_unlock (mutex);
}
if (priv->load_idle)
{
g_source_remove (priv->load_idle);
priv->load_idle = 0;
priv->async_data = NULL;
}
if (priv->load_error)
{
g_error_free (priv->load_error);
priv->load_error = NULL;
}
if (priv->load_bitmap)
{
cogl_bitmap_free (priv->load_bitmap);
priv->load_bitmap = NULL;
}
g_free (priv->load_filename);
}
static void
@ -778,8 +836,20 @@ clutter_texture_set_property (GObject *object,
case PROP_KEEP_ASPECT_RATIO:
priv->keep_aspect_ratio = g_value_get_boolean (value);
break;
case PROP_LOAD_DATA_ASYNC:
if (g_value_get_boolean (value))
{
priv->load_async_set = TRUE;
priv->load_data_async = TRUE;
}
break;
case PROP_LOAD_ASYNC:
priv->load_async = g_value_get_boolean (value);
if (g_value_get_boolean (value))
{
priv->load_data_async = TRUE;
priv->load_async_set = TRUE;
priv->load_size_async = TRUE;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -836,9 +906,6 @@ clutter_texture_get_property (GObject *object,
case PROP_KEEP_ASPECT_RATIO:
g_value_set_boolean (value, priv->keep_aspect_ratio);
break;
case PROP_LOAD_ASYNC:
g_value_set_boolean (value, priv->load_async);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -974,17 +1041,23 @@ clutter_texture_class_init (ClutterTextureClass *klass)
FALSE,
CLUTTER_PARAM_READWRITE));
/**
* ClutterTexture:load-async:
*
* Tries to load a texture from a filename by using a local thread
* to perform the read operations. Threading is only enabled if
* g_thread_init() has been called prior to clutter_init(), otherwise
* #ClutterTexture will use the main loop to load the image.
* Tries to load a texture from a filename by using a local thread to perform
* the read operations. The initially created texture has dimensions 0x0 when
* the true size becomes available the #ClutterTexture::size-change signal is
* emitted and when the image has completed loading the
* #ClutterTexture::load-finished signal is emitted.
*
* The upload of the texture data on the GL pipeline is not
* asynchronous, as it must be performed from within the same
* thread that called clutter_main().
* Threading is only enabled if g_thread_init() has been called prior to
* clutter_init(), otherwise #ClutterTexture will use the main loop to load
* the image.
*
* The upload of the texture data on the GL pipeline is not asynchronous, as
* it must be performed from within the same thread that called
* clutter_main().
*
* Since: 1.0
*/
@ -995,7 +1068,27 @@ clutter_texture_class_init (ClutterTextureClass *klass)
"Load files inside a thread to avoid blocking when "
"loading images.",
FALSE,
CLUTTER_PARAM_READWRITE));
CLUTTER_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
/**
* ClutterTexture:load-data-async:
*
* Like #ClutterTexture:load-async but loads the width and height
* synchronously causing some blocking.
*
* Since: 1.0
*/
g_object_class_install_property
(gobject_class, PROP_LOAD_DATA_ASYNC,
g_param_spec_boolean ("load-data-async",
"Load data asynchronously",
"Decode image data files inside a thread to reduce "
"blocking when loading images.",
FALSE,
CLUTTER_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
/**
* ClutterTexture::size-change:
@ -1550,14 +1643,16 @@ clutter_texture_set_from_yuv_data (ClutterTexture *texture,
/*
* clutter_texture_async_load_complete:
* @self: a #ClutterTexture
* @bitmap: a #CoglBitmap
* @error: load error
*
* If @error is %NULL, loads the #CoglBitmap into a #CoglTexture.
* If @error is %NULL, loads @bitmap into a #CoglTexture.
*
* This function emits the ::load-finished signal on @self.
*/
static void
clutter_texture_async_load_complete (ClutterTexture *self,
CoglBitmap *bitmap,
const GError *error)
{
ClutterTexturePrivate *priv = self->priv;
@ -1565,6 +1660,8 @@ clutter_texture_async_load_complete (ClutterTexture *self,
CoglTextureFlags flags = COGL_TEXTURE_NONE;
gint waste = -1;
priv->async_data = NULL;
if (error == NULL)
{
if (!priv->no_slice)
@ -1573,14 +1670,17 @@ clutter_texture_async_load_complete (ClutterTexture *self,
if (priv->filter_quality == CLUTTER_TEXTURE_QUALITY_HIGH)
flags |= COGL_TEXTURE_AUTO_MIPMAP;
handle = cogl_texture_new_from_bitmap (priv->load_bitmap,
handle = cogl_texture_new_from_bitmap (bitmap,
waste, flags,
COGL_PIXEL_FORMAT_ANY);
clutter_texture_set_cogl_texture (self, handle);
if (priv->load_size_async)
{
g_signal_emit (self, texture_signals[SIZE_CHANGE], 0,
cogl_texture_get_width(handle),
cogl_texture_get_height (handle));
}
cogl_texture_unref (handle);
cogl_bitmap_free (priv->load_bitmap);
priv->load_bitmap = NULL;
}
g_signal_emit (self, texture_signals[LOAD_FINISHED], 0, error);
@ -1589,96 +1689,100 @@ clutter_texture_async_load_complete (ClutterTexture *self,
}
static gboolean
clutter_texture_thread_cb (gpointer data)
clutter_texture_thread_idle_func (gpointer user_data)
{
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
ClutterTextureAsyncData *data = user_data;
priv->load_idle = 0;
/* Grab the mutex so we can be sure the thread has unlocked it
before we destroy it */
g_mutex_lock (data->mutex);
g_mutex_unlock (data->mutex);
if (priv->load_thread)
clutter_texture_async_load_complete (data->texture, data->load_bitmap,
data->load_error);
clutter_texture_async_data_free (data);
return FALSE;
}
static void
clutter_texture_thread_func (gpointer user_data, gpointer pool_data)
{
g_thread_join (priv->load_thread);
priv->load_thread = NULL;
ClutterTextureAsyncData *data = user_data;
gboolean should_abort;
/* Make sure we haven't been told to abort before the thread had a
chance to run */
g_mutex_lock (data->mutex);
should_abort = data->abort;
g_mutex_unlock (data->mutex);
if (should_abort)
{
/* If we've been told to abort then main thread has disowned the
async data and we need to free it */
clutter_texture_async_data_free (data);
return;
}
data->load_bitmap = cogl_bitmap_new_from_file (data->load_filename,
&data->load_error);
/* Check again if we've been told to abort */
g_mutex_lock (data->mutex);
if (data->abort)
{
g_mutex_unlock (data->mutex);
clutter_texture_async_data_free (data);
}
else
return FALSE;
clutter_texture_async_load_complete (self, priv->load_error);
if (priv->load_error)
{
g_error_free (priv->load_error);
priv->load_error = NULL;
/* Make sure we give the image to GL in the main thread, where we
* hold the main Clutter lock. Once load_idle is non-NULL then the
* main thread is guaranteed not to set the abort flag. It can't
* set it while we're holding the mutex so we can safely start the
* idle handler now without the possibility of calling the
* callback after it is aborted */
data->load_idle =
clutter_threads_add_idle_full (G_PRIORITY_LOW, clutter_texture_thread_idle_func, data, NULL);
g_mutex_unlock (data->mutex);
}
return FALSE;
}
static gpointer
clutter_texture_thread_func (gpointer data)
{
static GStaticMutex thread_load_mutex = G_STATIC_MUTEX_INIT;
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
/* we aquire the shared lock, only one thread is allowed to
* be loading at a time
*/
g_static_mutex_lock (&thread_load_mutex);
if (priv->abort)
{
g_static_mutex_unlock (&thread_load_mutex);
g_free (priv->load_filename);
priv->load_filename = NULL;
return NULL;
}
/* Try loading with imaging backend */
priv->load_bitmap = cogl_bitmap_new_from_file (priv->load_filename,
&priv->load_error);
g_static_mutex_unlock (&thread_load_mutex);
g_free (priv->load_filename);
priv->load_filename = NULL;
/* make sure we load the image in the main thread, where we
* hold the main Clutter lock
*/
priv->load_idle =
clutter_threads_add_idle (clutter_texture_thread_cb, self);
return NULL;
return;
}
static gboolean
clutter_texture_idle_func (gpointer data)
clutter_texture_idle_func (gpointer user_data)
{
ClutterTexture *self = data;
ClutterTexturePrivate *priv = self->priv;
GError *internal_error;
ClutterTextureAsyncData *data = user_data;
GError *internal_error = NULL;
internal_error = NULL;
priv->load_bitmap = cogl_bitmap_new_from_file (priv->load_filename,
data->load_bitmap = cogl_bitmap_new_from_file (data->load_filename,
&internal_error);
clutter_texture_async_load_complete (self, internal_error);
g_free (priv->load_filename);
priv->load_filename = NULL;
clutter_texture_async_load_complete (data->texture, data->load_bitmap,
internal_error);
if (internal_error)
g_error_free (internal_error);
clutter_texture_async_data_free (data);
return FALSE;
}
/*
* clutter_texture_async_load:
* @self: a #ClutterTexture
* @self: a #ClutterTExture
* @filename: name of the file to load
* @error: return location for a #GError
*
* Starts an asynchronous load of the file name stored inside
* the load_filename private member.
* the load_filename member of @data.
*
* If threading is enabled we use a GThread to perform the actual
* I/O; if threading is not enabled, we use an idle GSource.
@ -1697,21 +1801,30 @@ clutter_texture_idle_func (gpointer data)
*/
static gboolean
clutter_texture_async_load (ClutterTexture *self,
const gchar *filename,
GError **error)
{
ClutterTexturePrivate *priv = self->priv;
ClutterTextureAsyncData *data;
gint width, height;
gboolean res;
g_assert (priv->load_filename != NULL);
/* ask the file for a size; if we cannot get the size then
* there's no point in even continuing the asynchronous
* loading, so we just stop there
*/
res = cogl_bitmap_get_size_from_file (priv->load_filename,
&width,
&height);
if (priv->load_size_async)
{
res = TRUE;
width = 0;
height = 0;
}
else
{
res = cogl_bitmap_get_size_from_file (filename, &width, &height);
}
if (!res)
{
g_set_error (error, CLUTTER_TEXTURE_ERROR,
@ -1725,23 +1838,41 @@ clutter_texture_async_load (ClutterTexture *self,
priv->height = height;
}
clutter_texture_async_load_cancel (self);
data = g_slice_new (ClutterTextureAsyncData);
data->abort = FALSE;
data->texture = self;
data->load_idle = 0;
data->load_filename = g_strdup (filename);
data->load_bitmap = NULL;
data->load_error = NULL;
priv->async_data = data;
if (g_thread_supported ())
{
priv->load_thread =
g_thread_create ((GThreadFunc) clutter_texture_thread_func,
self, TRUE,
error);
data->mutex = g_mutex_new ();
return priv->load_thread != NULL? TRUE : FALSE;
if (async_thread_pool == NULL)
/* This apparently can't fail if exclusive == FALSE */
async_thread_pool
= g_thread_pool_new (clutter_texture_thread_func,
NULL, 1, FALSE, NULL);
g_thread_pool_push (async_thread_pool, data, NULL);
}
else
{
priv->load_idle =
clutter_threads_add_idle (clutter_texture_idle_func, self);
data->mutex = NULL;
data->load_idle
= clutter_threads_add_idle (clutter_texture_idle_func, data);
}
return TRUE;
}
}
/**
* clutter_texture_set_from_file:
@ -1754,9 +1885,10 @@ clutter_texture_async_load (ClutterTexture *self,
*
* If #ClutterTexture:load-async is set to %TRUE, this function
* will return as soon as possible, and the actual image loading
* from disk will be performed asynchronously. #ClutterTexture::load-finished
* will be emitted when the image has been loaded or if an error
* occurred.
* from disk will be performed asynchronously. #ClutterTexture::size-change
* will be emitten when the size of the texture is available and
* #ClutterTexture::load-finished will be emitted when the image has been
* loaded or if an error occurred.
*
* Return value: %TRUE if the image was successfully loaded and set
*
@ -1778,14 +1910,8 @@ clutter_texture_set_from_file (ClutterTexture *texture,
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (priv->load_async)
{
clutter_texture_async_load_cancel (texture);
priv->load_filename = g_strdup (filename);
return clutter_texture_async_load (texture, error);
}
if (priv->load_data_async)
return clutter_texture_async_load (texture, filename, error);
if (!priv->no_slice)
max_waste = priv->max_tile_waste;

1
tests/interactive/Makefile.am
View File

@ -1,6 +1,7 @@
UNIT_TESTS = \
test-textures.c \
test-texture-async.c \
test-events.c \
test-offscreen.c \
test-scale.c \

106
tests/interactive/test-texture-async.c Normal file
View File

@ -0,0 +1,106 @@
#include <stdlib.h>
#include <gmodule.h>
#include <clutter/clutter.h>
static void size_change_cb (ClutterTexture *texture,
gint width,
gint height,
gpointer user_data)
{
guint w,h;
clutter_actor_set_size (user_data, width, height);
}
const gchar *path = "redhand.png";
static gboolean task (gpointer foo)
{
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *depth_behavior;
ClutterActor *image[4];
ClutterActor *clone[4];
ClutterActor *stage;
gint i;
stage = clutter_stage_get_default ();
#if 0
for (i=0;i<4;i++)
image[i] = g_object_new (CLUTTER_TYPE_TEXTURE,
"filename", path,
"load-async", TRUE,
NULL);
#else
/*for (i=0;i<4;i++)*/
image[0] = g_object_new (CLUTTER_TYPE_TEXTURE,
"filename", path,
NULL);
image[1] = g_object_new (CLUTTER_TYPE_TEXTURE,
"filename", path,
"load-data-async", TRUE,
NULL);
image[2] = g_object_new (CLUTTER_TYPE_TEXTURE,
"filename", path,
"load-async", TRUE,
NULL);
#endif
for (i=0;i<3;i++)
{
clutter_container_add (CLUTTER_CONTAINER (stage), image[i], NULL);
}
for (i=0;i<3;i++)
{
clutter_actor_set_position (image[i], 50+i*100, 0+i*50);
clone[i]=clutter_clone_new (image[i]);
g_signal_connect (image[i], "size-change",
G_CALLBACK (size_change_cb), clone[i]);
clutter_container_add (CLUTTER_CONTAINER (stage), clone[i], NULL);
clutter_actor_set_position (clone[i], 50+i*100, 150+i*50+100);
}
for (i=0; i<3; i++)
{
timeline = clutter_timeline_new (60*5, 60);
alpha = clutter_alpha_new_full (timeline, CLUTTER_LINEAR);
depth_behavior = clutter_behaviour_depth_new (alpha, -2500, 0);
clutter_behaviour_apply (depth_behavior, image[i]);
clutter_timeline_start (timeline);
}
return FALSE;
}
G_MODULE_EXPORT gint
test_texture_async_main (int argc, char *argv[])
{
ClutterActor *stage;
ClutterColor stage_color = { 0x12, 0x34, 0x56, 0xff };
GError *error;
clutter_init (&argc, &argv);
g_thread_init (NULL);
stage = clutter_stage_get_default ();
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
clutter_actor_show (stage);
g_signal_connect (stage,
"button-press-event", G_CALLBACK (clutter_main_quit),
NULL);
error = NULL;
path = argv[1]?argv[1]:"redhand.png";
g_timeout_add (500, task, NULL);
clutter_main ();
/*g_object_unref (depth_behavior);
g_object_unref (timeline);*/
return EXIT_SUCCESS;
}