From 893c74478f6f64ecabfcc875ed72f9fed6fed8fc Mon Sep 17 00:00:00 2001 From: Benjamin Otte Date: Tue, 3 Feb 2004 00:27:09 +0000 Subject: [PATCH] gst/elements/gstfilesrc.*: don't ref the filesrc when creating mmaped buffers. Don't keep a list of not-yet-destroyed... Original commit message from CVS: 2004-02-03 Benjamin Otte * gst/elements/gstfilesrc.c: (gst_filesrc_init), (gst_filesrc_dispose), (gst_filesrc_free_parent_mmap), (gst_filesrc_map_region), (gst_filesrc_get_mmap): * gst/elements/gstfilesrc.h: don't ref the filesrc when creating mmaped buffers. Don't keep a list of not-yet-destroyed buffers. * gst/gstbuffer.h: Deprecated BST_BUFFER_FREE_FUNC and GST_BUFFER_COPY_FUNC --- ChangeLog | 11 ++++ gst/elements/gstfilesrc.c | 148 +++++++++++------------------------------- gst/elements/gstfilesrc.h | 3 - gst/gstbuffer.h | 2 + plugins/elements/gstfilesrc.c | 148 +++++++++++------------------------------- plugins/elements/gstfilesrc.h | 3 - 6 files changed, 89 insertions(+), 226 deletions(-) diff --git a/ChangeLog b/ChangeLog index a96746c..fad156d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,14 @@ +2004-02-03 Benjamin Otte + + * gst/elements/gstfilesrc.c: (gst_filesrc_init), + (gst_filesrc_dispose), (gst_filesrc_free_parent_mmap), + (gst_filesrc_map_region), (gst_filesrc_get_mmap): + * gst/elements/gstfilesrc.h: + don't ref the filesrc when creating mmaped buffers. Don't keep a + list of not-yet-destroyed buffers. + * gst/gstbuffer.h: + Deprecated BST_BUFFER_FREE_FUNC and GST_BUFFER_COPY_FUNC + 2004-02-02 Thomas Vander Stichele * gst/gst.c: (init_pre): diff --git a/gst/elements/gstfilesrc.c b/gst/elements/gstfilesrc.c index e366578..817c07e 100644 --- a/gst/elements/gstfilesrc.c +++ b/gst/elements/gstfilesrc.c @@ -192,19 +192,6 @@ gst_filesrc_class_init (GstFileSrcClass *klass) gstelement_class->change_state = gst_filesrc_change_state; } -static gint -gst_filesrc_bufcmp (gconstpointer a, gconstpointer b) -{ -/* GstBuffer *bufa = (GstBuffer *)a, *bufb = (GstBuffer *)b;*/ - - /* sort first by offset, then in reverse by size */ - if (GST_BUFFER_OFFSET(a) < GST_BUFFER_OFFSET(b)) return -1; - else if (GST_BUFFER_OFFSET(a) > GST_BUFFER_OFFSET(b)) return 1; - else if (GST_BUFFER_SIZE(a) > GST_BUFFER_SIZE(b)) return -1; - else if (GST_BUFFER_SIZE(a) < GST_BUFFER_SIZE(b)) return 1; - else return 0; -} - static void gst_filesrc_init (GstFileSrc *src) { @@ -230,9 +217,6 @@ gst_filesrc_init (GstFileSrc *src) src->mapbuf = NULL; src->mapsize = DEFAULT_MMAPSIZE; /* default is 4MB */ - src->map_regions = g_tree_new (gst_filesrc_bufcmp); - src->map_regions_lock = g_mutex_new(); - src->seek_happened = FALSE; } @@ -245,8 +229,6 @@ gst_filesrc_dispose (GObject *object) G_OBJECT_CLASS (parent_class)->dispose (object); - g_tree_destroy (src->map_regions); - g_mutex_free (src->map_regions_lock); if (src->filename) g_free (src->filename); if (src->uri) @@ -348,19 +330,8 @@ gst_filesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamS static void gst_filesrc_free_parent_mmap (GstBuffer *buf) { - GstFileSrc *src = GST_FILESRC (GST_BUFFER_PRIVATE (buf)); - - GST_LOG_OBJECT (src, "freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u", - GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf)); - - /* remove the buffer from the list of available mmap'd regions */ - g_mutex_lock (src->map_regions_lock); - g_tree_remove (src->map_regions, buf); - /* check to see if the tree is empty */ - if (g_tree_nnodes (src->map_regions) == 0) { - /* we have to free the bufferpool we don't have yet */ - } - g_mutex_unlock (src->map_regions_lock); + GST_LOG ("freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u", + GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf)); #ifdef MADV_DONTNEED /* madvise to tell the kernel what to do with it */ @@ -370,15 +341,12 @@ gst_filesrc_free_parent_mmap (GstBuffer *buf) munmap (GST_BUFFER_DATA (buf), GST_BUFFER_MAXSIZE (buf)); /* cast to unsigned long, since there's no gportable way to print * guint64 as hex */ - GST_LOG_OBJECT (src, "unmapped region %08lx+%08lx at %p", - (unsigned long) GST_BUFFER_OFFSET (buf), - (unsigned long) GST_BUFFER_MAXSIZE (buf), - GST_BUFFER_DATA (buf)); + GST_LOG ("unmapped region %08lx+%08lx at %p", + (unsigned long) GST_BUFFER_OFFSET (buf), + (unsigned long) GST_BUFFER_MAXSIZE (buf), + GST_BUFFER_DATA (buf)); GST_BUFFER_DATA (buf) = NULL; - - g_object_unref (src); - gst_buffer_default_free (buf); } static GstBuffer * @@ -423,12 +391,7 @@ gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size) GST_BUFFER_OFFSET_END (buf) = offset + size; GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_PRIVATE (buf) = src; - g_object_ref (src); - GST_BUFFER_FREE_FUNC (buf) = (GstDataFreeFunction) gst_filesrc_free_parent_mmap; - - g_mutex_lock (src->map_regions_lock); - g_tree_insert (src->map_regions,buf,buf); - g_mutex_unlock (src->map_regions_lock); + GST_BUFFER_FREE_DATA_FUNC (buf) = gst_filesrc_free_parent_mmap; return buf; } @@ -464,25 +427,6 @@ gst_filesrc_map_small_region (GstFileSrc *src, off_t offset, size_t size) return gst_filesrc_map_region(src,offset,size); } -typedef struct { - off_t offset; - off_t size; -} GstFileSrcRegion; - -/* This allows us to search for a potential mmap region. */ -static gint -gst_filesrc_search_region_match (gpointer a, gpointer b) -{ - GstFileSrcRegion *r = (GstFileSrcRegion *)b; - - /* trying to walk b down the tree, current node is a */ - if (r->offset < GST_BUFFER_OFFSET(a)) return -1; - else if (r->offset >= (GST_BUFFER_OFFSET(a) + GST_BUFFER_SIZE(a))) return 1; - else if ((r->offset + r->size) <= (GST_BUFFER_OFFSET(a) + GST_BUFFER_SIZE(a))) return 0; - - return -2; -} - /** * gst_filesrc_get_mmap: * @pad: #GstPad to push a buffer from @@ -492,10 +436,9 @@ gst_filesrc_search_region_match (gpointer a, gpointer b) static GstBuffer * gst_filesrc_get_mmap (GstFileSrc *src) { - GstBuffer *buf = NULL, *map; + GstBuffer *buf = NULL; size_t readsize, mapsize; off_t readend,mapstart,mapend; - GstFileSrcRegion region; int i; /* calculate end pointers so we don't have to do so repeatedly later */ @@ -556,54 +499,39 @@ gst_filesrc_get_mmap (GstFileSrc *src) if (buf == NULL) { /* first check to see if there's a map that covers the right region already */ GST_LOG_OBJECT (src, "searching for mapbuf to cover %llu+%d",src->curoffset,readsize); - region.offset = src->curoffset; - region.size = readsize; - map = g_tree_search (src->map_regions, - (GCompareFunc) gst_filesrc_search_region_match, - (gpointer)®ion); - - /* if we found an exact match, subbuffer it */ - if (map != NULL) { - GST_LOG_OBJECT (src, "found mapbuf at %"G_GUINT64_FORMAT"+%u, creating subbuffer", - GST_BUFFER_OFFSET (map), GST_BUFFER_SIZE (map)); - buf = gst_buffer_create_sub (map, src->curoffset - GST_BUFFER_OFFSET(map), readsize); - GST_BUFFER_OFFSET (buf) = src->curoffset; + + /* if the read buffer crosses a mmap region boundary, create a one-off region */ + if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) { + GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off", + src->curoffset,readsize,src->mapsize); + buf = gst_filesrc_map_small_region (src, src->curoffset, readsize); + if (buf == NULL) + return NULL; - /* otherwise we need to create something out of thin air */ + /* otherwise we will create a new mmap region and set it to the default */ } else { - /* if the read buffer crosses a mmap region boundary, create a one-off region */ - if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) { - GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off", - src->curoffset,readsize,src->mapsize); - buf = gst_filesrc_map_small_region (src, src->curoffset, readsize); - if (buf == NULL) - return NULL; - - /* otherwise we will create a new mmap region and set it to the default */ - } else { - size_t mapsize; - - off_t nextmap = src->curoffset - (src->curoffset % src->mapsize); - GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering", - src->curoffset, readsize, nextmap, src->mapsize); - /* first, we're done with the old mapbuf */ - gst_buffer_unref(src->mapbuf); - mapsize = src->mapsize; - - /* double the mapsize as long as the readsize is smaller */ - while (readsize - (src->curoffset - nextmap) > mapsize) { - GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", readsize, mapsize); - mapsize <<=1; - } - /* create a new one */ - src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize); - if (src->mapbuf == NULL) - return NULL; - - /* subbuffer it */ - buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize); - GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap; + size_t mapsize; + + off_t nextmap = src->curoffset - (src->curoffset % src->mapsize); + GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering", + src->curoffset, readsize, nextmap, src->mapsize); + /* first, we're done with the old mapbuf */ + gst_buffer_unref(src->mapbuf); + mapsize = src->mapsize; + + /* double the mapsize as long as the readsize is smaller */ + while (readsize - (src->curoffset - nextmap) > mapsize) { + GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", readsize, mapsize); + mapsize <<=1; } + /* create a new one */ + src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize); + if (src->mapbuf == NULL) + return NULL; + + /* subbuffer it */ + buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize); + GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap; } } diff --git a/gst/elements/gstfilesrc.h b/gst/elements/gstfilesrc.h index 1f584be..8ebda1e 100644 --- a/gst/elements/gstfilesrc.h +++ b/gst/elements/gstfilesrc.h @@ -70,9 +70,6 @@ struct _GstFileSrc { GstBuffer *mapbuf; size_t mapsize; - GTree *map_regions; - GMutex *map_regions_lock; - gboolean seek_happened; gboolean need_flush; }; diff --git a/gst/gstbuffer.h b/gst/gstbuffer.h index 3d4b37d..b10dbcc 100644 --- a/gst/gstbuffer.h +++ b/gst/gstbuffer.h @@ -44,8 +44,10 @@ extern GType _gst_buffer_type; #define GST_BUFFER_REFCOUNT(buf) GST_DATA_REFCOUNT(buf) #define GST_BUFFER_REFCOUNT_VALUE(buf) GST_DATA_REFCOUNT_VALUE(buf) +#ifndef GST_DISABLE_DEPRECATED #define GST_BUFFER_COPY_FUNC(buf) GST_DATA_COPY_FUNC(buf) #define GST_BUFFER_FREE_FUNC(buf) GST_DATA_FREE_FUNC(buf) +#endif #define GST_BUFFER_FLAGS(buf) GST_DATA_FLAGS(buf) #define GST_BUFFER_FLAG_IS_SET(buf,flag) GST_DATA_FLAG_IS_SET (buf, flag) diff --git a/plugins/elements/gstfilesrc.c b/plugins/elements/gstfilesrc.c index e366578..817c07e 100644 --- a/plugins/elements/gstfilesrc.c +++ b/plugins/elements/gstfilesrc.c @@ -192,19 +192,6 @@ gst_filesrc_class_init (GstFileSrcClass *klass) gstelement_class->change_state = gst_filesrc_change_state; } -static gint -gst_filesrc_bufcmp (gconstpointer a, gconstpointer b) -{ -/* GstBuffer *bufa = (GstBuffer *)a, *bufb = (GstBuffer *)b;*/ - - /* sort first by offset, then in reverse by size */ - if (GST_BUFFER_OFFSET(a) < GST_BUFFER_OFFSET(b)) return -1; - else if (GST_BUFFER_OFFSET(a) > GST_BUFFER_OFFSET(b)) return 1; - else if (GST_BUFFER_SIZE(a) > GST_BUFFER_SIZE(b)) return -1; - else if (GST_BUFFER_SIZE(a) < GST_BUFFER_SIZE(b)) return 1; - else return 0; -} - static void gst_filesrc_init (GstFileSrc *src) { @@ -230,9 +217,6 @@ gst_filesrc_init (GstFileSrc *src) src->mapbuf = NULL; src->mapsize = DEFAULT_MMAPSIZE; /* default is 4MB */ - src->map_regions = g_tree_new (gst_filesrc_bufcmp); - src->map_regions_lock = g_mutex_new(); - src->seek_happened = FALSE; } @@ -245,8 +229,6 @@ gst_filesrc_dispose (GObject *object) G_OBJECT_CLASS (parent_class)->dispose (object); - g_tree_destroy (src->map_regions); - g_mutex_free (src->map_regions_lock); if (src->filename) g_free (src->filename); if (src->uri) @@ -348,19 +330,8 @@ gst_filesrc_get_property (GObject *object, guint prop_id, GValue *value, GParamS static void gst_filesrc_free_parent_mmap (GstBuffer *buf) { - GstFileSrc *src = GST_FILESRC (GST_BUFFER_PRIVATE (buf)); - - GST_LOG_OBJECT (src, "freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u", - GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf)); - - /* remove the buffer from the list of available mmap'd regions */ - g_mutex_lock (src->map_regions_lock); - g_tree_remove (src->map_regions, buf); - /* check to see if the tree is empty */ - if (g_tree_nnodes (src->map_regions) == 0) { - /* we have to free the bufferpool we don't have yet */ - } - g_mutex_unlock (src->map_regions_lock); + GST_LOG ("freeing mmap()d buffer at %"G_GUINT64_FORMAT"+%u", + GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf)); #ifdef MADV_DONTNEED /* madvise to tell the kernel what to do with it */ @@ -370,15 +341,12 @@ gst_filesrc_free_parent_mmap (GstBuffer *buf) munmap (GST_BUFFER_DATA (buf), GST_BUFFER_MAXSIZE (buf)); /* cast to unsigned long, since there's no gportable way to print * guint64 as hex */ - GST_LOG_OBJECT (src, "unmapped region %08lx+%08lx at %p", - (unsigned long) GST_BUFFER_OFFSET (buf), - (unsigned long) GST_BUFFER_MAXSIZE (buf), - GST_BUFFER_DATA (buf)); + GST_LOG ("unmapped region %08lx+%08lx at %p", + (unsigned long) GST_BUFFER_OFFSET (buf), + (unsigned long) GST_BUFFER_MAXSIZE (buf), + GST_BUFFER_DATA (buf)); GST_BUFFER_DATA (buf) = NULL; - - g_object_unref (src); - gst_buffer_default_free (buf); } static GstBuffer * @@ -423,12 +391,7 @@ gst_filesrc_map_region (GstFileSrc *src, off_t offset, size_t size) GST_BUFFER_OFFSET_END (buf) = offset + size; GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_PRIVATE (buf) = src; - g_object_ref (src); - GST_BUFFER_FREE_FUNC (buf) = (GstDataFreeFunction) gst_filesrc_free_parent_mmap; - - g_mutex_lock (src->map_regions_lock); - g_tree_insert (src->map_regions,buf,buf); - g_mutex_unlock (src->map_regions_lock); + GST_BUFFER_FREE_DATA_FUNC (buf) = gst_filesrc_free_parent_mmap; return buf; } @@ -464,25 +427,6 @@ gst_filesrc_map_small_region (GstFileSrc *src, off_t offset, size_t size) return gst_filesrc_map_region(src,offset,size); } -typedef struct { - off_t offset; - off_t size; -} GstFileSrcRegion; - -/* This allows us to search for a potential mmap region. */ -static gint -gst_filesrc_search_region_match (gpointer a, gpointer b) -{ - GstFileSrcRegion *r = (GstFileSrcRegion *)b; - - /* trying to walk b down the tree, current node is a */ - if (r->offset < GST_BUFFER_OFFSET(a)) return -1; - else if (r->offset >= (GST_BUFFER_OFFSET(a) + GST_BUFFER_SIZE(a))) return 1; - else if ((r->offset + r->size) <= (GST_BUFFER_OFFSET(a) + GST_BUFFER_SIZE(a))) return 0; - - return -2; -} - /** * gst_filesrc_get_mmap: * @pad: #GstPad to push a buffer from @@ -492,10 +436,9 @@ gst_filesrc_search_region_match (gpointer a, gpointer b) static GstBuffer * gst_filesrc_get_mmap (GstFileSrc *src) { - GstBuffer *buf = NULL, *map; + GstBuffer *buf = NULL; size_t readsize, mapsize; off_t readend,mapstart,mapend; - GstFileSrcRegion region; int i; /* calculate end pointers so we don't have to do so repeatedly later */ @@ -556,54 +499,39 @@ gst_filesrc_get_mmap (GstFileSrc *src) if (buf == NULL) { /* first check to see if there's a map that covers the right region already */ GST_LOG_OBJECT (src, "searching for mapbuf to cover %llu+%d",src->curoffset,readsize); - region.offset = src->curoffset; - region.size = readsize; - map = g_tree_search (src->map_regions, - (GCompareFunc) gst_filesrc_search_region_match, - (gpointer)®ion); - - /* if we found an exact match, subbuffer it */ - if (map != NULL) { - GST_LOG_OBJECT (src, "found mapbuf at %"G_GUINT64_FORMAT"+%u, creating subbuffer", - GST_BUFFER_OFFSET (map), GST_BUFFER_SIZE (map)); - buf = gst_buffer_create_sub (map, src->curoffset - GST_BUFFER_OFFSET(map), readsize); - GST_BUFFER_OFFSET (buf) = src->curoffset; + + /* if the read buffer crosses a mmap region boundary, create a one-off region */ + if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) { + GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off", + src->curoffset,readsize,src->mapsize); + buf = gst_filesrc_map_small_region (src, src->curoffset, readsize); + if (buf == NULL) + return NULL; - /* otherwise we need to create something out of thin air */ + /* otherwise we will create a new mmap region and set it to the default */ } else { - /* if the read buffer crosses a mmap region boundary, create a one-off region */ - if ((src->curoffset / src->mapsize) != (readend / src->mapsize)) { - GST_LOG_OBJECT (src, "read buf %llu+%d crosses a %d-byte boundary, creating a one-off", - src->curoffset,readsize,src->mapsize); - buf = gst_filesrc_map_small_region (src, src->curoffset, readsize); - if (buf == NULL) - return NULL; - - /* otherwise we will create a new mmap region and set it to the default */ - } else { - size_t mapsize; - - off_t nextmap = src->curoffset - (src->curoffset % src->mapsize); - GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering", - src->curoffset, readsize, nextmap, src->mapsize); - /* first, we're done with the old mapbuf */ - gst_buffer_unref(src->mapbuf); - mapsize = src->mapsize; - - /* double the mapsize as long as the readsize is smaller */ - while (readsize - (src->curoffset - nextmap) > mapsize) { - GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", readsize, mapsize); - mapsize <<=1; - } - /* create a new one */ - src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize); - if (src->mapbuf == NULL) - return NULL; - - /* subbuffer it */ - buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize); - GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap; + size_t mapsize; + + off_t nextmap = src->curoffset - (src->curoffset % src->mapsize); + GST_LOG_OBJECT (src, "read buf %llu+%d in new mapbuf at %llu+%d, mapping and subbuffering", + src->curoffset, readsize, nextmap, src->mapsize); + /* first, we're done with the old mapbuf */ + gst_buffer_unref(src->mapbuf); + mapsize = src->mapsize; + + /* double the mapsize as long as the readsize is smaller */ + while (readsize - (src->curoffset - nextmap) > mapsize) { + GST_LOG_OBJECT (src, "readsize smaller then mapsize %08x %d", readsize, mapsize); + mapsize <<=1; } + /* create a new one */ + src->mapbuf = gst_filesrc_map_region (src, nextmap, mapsize); + if (src->mapbuf == NULL) + return NULL; + + /* subbuffer it */ + buf = gst_buffer_create_sub (src->mapbuf, src->curoffset - nextmap, readsize); + GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET (src->mapbuf) + src->curoffset - nextmap; } } diff --git a/plugins/elements/gstfilesrc.h b/plugins/elements/gstfilesrc.h index 1f584be..8ebda1e 100644 --- a/plugins/elements/gstfilesrc.h +++ b/plugins/elements/gstfilesrc.h @@ -70,9 +70,6 @@ struct _GstFileSrc { GstBuffer *mapbuf; size_t mapsize; - GTree *map_regions; - GMutex *map_regions_lock; - gboolean seek_happened; gboolean need_flush; }; -- 2.7.4