[Spice-devel] [PATCH 13/15] worker: simplify RedCompressBuf
Frediano Ziglio
fziglio at redhat.com
Mon Nov 9 05:16:12 PST 2015
From: Christophe Fergeau <cfergeau at redhat.com>
Make sure an allocated buffer is correctly referenced by the marshaller,
and can't be free and reused by mistake. Simplify the code by using
GSlice
---
server/display-channel.h | 3 --
server/red_worker.c | 117 ++++++++++++-----------------------------------
2 files changed, 28 insertions(+), 92 deletions(-)
diff --git a/server/display-channel.h b/server/display-channel.h
index f1f4e3a..f45860c 100644
--- a/server/display-channel.h
+++ b/server/display-channel.h
@@ -73,7 +73,6 @@
typedef struct RedCompressBuf RedCompressBuf;
struct RedCompressBuf {
uint8_t buf[64 * 1024];
- RedCompressBuf *next;
RedCompressBuf *send_next;
};
@@ -179,8 +178,6 @@ struct DisplayChannelClient {
uint32_t stream_outbuf_size;
uint8_t *stream_outbuf; // caution stream buffer is also used as compress bufs!!!
- RedCompressBuf *used_compress_bufs;
-
FreeList free_list;
uint64_t pixmap_cache_items[MAX_DRAWABLE_PIXMAP_CACHE_ITEMS];
int num_pixmap_cache_items;
diff --git a/server/red_worker.c b/server/red_worker.c
index 83e0fa0..1c99f01 100644
--- a/server/red_worker.c
+++ b/server/red_worker.c
@@ -3464,16 +3464,27 @@ static void red_push_surface_image(DisplayChannelClient *dcc, int surface_id)
red_channel_client_push(RED_CHANNEL_CLIENT(dcc));
}
+static RedCompressBuf *compress_buf_new(void)
+{
+ return g_slice_new(RedCompressBuf);
+}
+
+static void compress_buf_free(RedCompressBuf *buf)
+{
+ g_slice_free(RedCompressBuf, buf);
+}
+
static void marshaller_add_compressed(SpiceMarshaller *m,
RedCompressBuf *comp_buf, size_t size)
{
size_t max = size;
size_t now;
do {
- spice_assert(comp_buf);
+ spice_return_if_fail(comp_buf);
now = MIN(sizeof(comp_buf->buf), max);
max -= now;
- spice_marshaller_add_ref(m, (uint8_t*)comp_buf->buf, now);
+ spice_marshaller_add_ref_full(m, (uint8_t*)comp_buf->buf, now,
+ (spice_marshaller_item_free_func)compress_buf_free, NULL);
comp_buf = comp_buf->send_next;
} while (max);
}
@@ -3508,66 +3519,6 @@ static inline void fill_palette(DisplayChannelClient *dcc,
}
}
-static inline RedCompressBuf *red_display_alloc_compress_buf(DisplayChannelClient *dcc)
-{
- DisplayChannel *display_channel = DCC_TO_DC(dcc);
- RedCompressBuf *ret;
-
- if (display_channel->free_compress_bufs) {
- ret = display_channel->free_compress_bufs;
- display_channel->free_compress_bufs = ret->next;
- } else {
- ret = spice_new(RedCompressBuf, 1);
- }
-
- ret->next = dcc->send_data.used_compress_bufs;
- dcc->send_data.used_compress_bufs = ret;
- return ret;
-}
-
-static inline void __red_display_free_compress_buf(DisplayChannel *dc,
- RedCompressBuf *buf)
-{
- buf->next = dc->free_compress_bufs;
- dc->free_compress_bufs = buf;
-}
-
-static void red_display_free_compress_buf(DisplayChannelClient *dcc,
- RedCompressBuf *buf)
-{
- DisplayChannel *display_channel = DCC_TO_DC(dcc);
- RedCompressBuf **curr_used = &dcc->send_data.used_compress_bufs;
-
- for (;;) {
- spice_assert(*curr_used);
- if (*curr_used == buf) {
- *curr_used = buf->next;
- break;
- }
- curr_used = &(*curr_used)->next;
- }
- __red_display_free_compress_buf(display_channel, buf);
-}
-
-static void red_display_reset_compress_buf(DisplayChannelClient *dcc)
-{
- while (dcc->send_data.used_compress_bufs) {
- RedCompressBuf *buf = dcc->send_data.used_compress_bufs;
- dcc->send_data.used_compress_bufs = buf->next;
- __red_display_free_compress_buf(DCC_TO_DC(dcc), buf);
- }
-}
-
-static void red_display_destroy_compress_bufs(DisplayChannel *display_channel)
-{
- spice_assert(!red_channel_is_connected(RED_CHANNEL(display_channel)));
- while (display_channel->free_compress_bufs) {
- RedCompressBuf *buf = display_channel->free_compress_bufs;
- display_channel->free_compress_bufs = buf->next;
- free(buf);
- }
-}
-
/******************************************************
* Global lz red drawables routines
*******************************************************/
@@ -3892,9 +3843,7 @@ static int encoder_usr_more_space(EncoderData *enc_data, uint8_t **io_ptr)
{
RedCompressBuf *buf;
- if (!(buf = red_display_alloc_compress_buf(enc_data->dcc))) {
- return 0;
- }
+ buf = compress_buf_new();
enc_data->bufs_tail->send_next = buf;
enc_data->bufs_tail = buf;
buf->send_next = NULL;
@@ -4154,7 +4103,7 @@ static inline int red_glz_compress_image(DisplayChannelClient *dcc,
int glz_size;
int zlib_size;
- glz_data->data.bufs_tail = red_display_alloc_compress_buf(dcc);
+ glz_data->data.bufs_tail = compress_buf_new();
glz_data->data.bufs_head = glz_data->data.bufs_tail;
if (!glz_data->data.bufs_head) {
@@ -4175,7 +4124,7 @@ static inline int red_glz_compress_image(DisplayChannelClient *dcc,
glz_size = glz_encode(dcc->glz, type, src->x, src->y,
(src->flags & SPICE_BITMAP_FLAGS_TOP_DOWN), NULL, 0,
- src->stride, (uint8_t*)glz_data->data.bufs_head->buf,
+ src->stride, glz_data->data.bufs_head->buf,
sizeof(glz_data->data.bufs_head->buf),
glz_drawable_instance,
&glz_drawable_instance->glz_instance);
@@ -4190,7 +4139,7 @@ static inline int red_glz_compress_image(DisplayChannelClient *dcc,
#endif
zlib_data = &worker->zlib_data;
- zlib_data->data.bufs_tail = red_display_alloc_compress_buf(dcc);
+ zlib_data->data.bufs_tail = compress_buf_new();
zlib_data->data.bufs_head = zlib_data->data.bufs_tail;
if (!zlib_data->data.bufs_head) {
@@ -4205,7 +4154,7 @@ static inline int red_glz_compress_image(DisplayChannelClient *dcc,
zlib_data->data.u.compressed_data.size_left = glz_size;
zlib_size = zlib_encode(worker->zlib, display_channel->zlib_level,
- glz_size, (uint8_t*)zlib_data->data.bufs_head->buf,
+ glz_size, zlib_data->data.bufs_head->buf,
sizeof(zlib_data->data.bufs_head->buf));
// the compressed buffer is bigger than the original data
@@ -4213,7 +4162,7 @@ static inline int red_glz_compress_image(DisplayChannelClient *dcc,
while (zlib_data->data.bufs_head) {
RedCompressBuf *buf = zlib_data->data.bufs_head;
zlib_data->data.bufs_head = buf->send_next;
- red_display_free_compress_buf(dcc, buf);
+ compress_buf_free(buf);
}
goto glz;
}
@@ -4252,7 +4201,7 @@ static inline int red_lz_compress_image(DisplayChannelClient *dcc,
stat_time_t start_time = stat_now(worker);
#endif
- lz_data->data.bufs_tail = red_display_alloc_compress_buf(dcc);
+ lz_data->data.bufs_tail = compress_buf_new();
lz_data->data.bufs_head = lz_data->data.bufs_tail;
if (!lz_data->data.bufs_head) {
@@ -4266,7 +4215,7 @@ static inline int red_lz_compress_image(DisplayChannelClient *dcc,
while (lz_data->data.bufs_head) {
RedCompressBuf *buf = lz_data->data.bufs_head;
lz_data->data.bufs_head = buf->send_next;
- red_display_free_compress_buf(dcc, buf);
+ compress_buf_free(buf);
}
return FALSE;
}
@@ -4280,7 +4229,7 @@ static inline int red_lz_compress_image(DisplayChannelClient *dcc,
size = lz_encode(lz, type, src->x, src->y,
!!(src->flags & SPICE_BITMAP_FLAGS_TOP_DOWN),
NULL, 0, src->stride,
- (uint8_t*)lz_data->data.bufs_head->buf,
+ lz_data->data.bufs_head->buf,
sizeof(lz_data->data.bufs_head->buf));
// the compressed buffer is bigger than the original data
@@ -4355,7 +4304,7 @@ static int red_jpeg_compress_image(DisplayChannelClient *dcc, SpiceImage *dest,
return FALSE;
}
- jpeg_data->data.bufs_tail = red_display_alloc_compress_buf(dcc);
+ jpeg_data->data.bufs_tail = compress_buf_new();
jpeg_data->data.bufs_head = jpeg_data->data.bufs_tail;
if (!jpeg_data->data.bufs_head) {
@@ -4370,7 +4319,7 @@ static int red_jpeg_compress_image(DisplayChannelClient *dcc, SpiceImage *dest,
while (jpeg_data->data.bufs_head) {
RedCompressBuf *buf = jpeg_data->data.bufs_head;
jpeg_data->data.bufs_head = buf->send_next;
- red_display_free_compress_buf(dcc, buf);
+ compress_buf_free(buf);
}
return FALSE;
}
@@ -4393,7 +4342,7 @@ static int red_jpeg_compress_image(DisplayChannelClient *dcc, SpiceImage *dest,
}
jpeg_size = jpeg_encode(jpeg, display_channel->jpeg_quality, jpeg_in_type,
src->x, src->y, NULL,
- 0, stride, (uint8_t*)jpeg_data->data.bufs_head->buf,
+ 0, stride, jpeg_data->data.bufs_head->buf,
sizeof(jpeg_data->data.bufs_head->buf));
// the compressed buffer is bigger than the original data
@@ -4419,7 +4368,7 @@ static int red_jpeg_compress_image(DisplayChannelClient *dcc, SpiceImage *dest,
comp_head_filled = jpeg_size % sizeof(lz_data->data.bufs_head->buf);
comp_head_left = sizeof(lz_data->data.bufs_head->buf) - comp_head_filled;
- lz_out_start_byte = ((uint8_t *)lz_data->data.bufs_head->buf) + comp_head_filled;
+ lz_out_start_byte = lz_data->data.bufs_head->buf + comp_head_filled;
lz_data->data.dcc = dcc;
@@ -4555,13 +4504,8 @@ static inline int red_quic_compress_image(DisplayChannelClient *dcc, SpiceImage
return FALSE;
}
- quic_data->data.bufs_tail = red_display_alloc_compress_buf(dcc);
+ quic_data->data.bufs_tail = compress_buf_new();
quic_data->data.bufs_head = quic_data->data.bufs_tail;
-
- if (!quic_data->data.bufs_head) {
- return FALSE;
- }
-
quic_data->data.bufs_head->send_next = NULL;
quic_data->data.dcc = dcc;
@@ -4569,7 +4513,7 @@ static inline int red_quic_compress_image(DisplayChannelClient *dcc, SpiceImage
while (quic_data->data.bufs_head) {
RedCompressBuf *buf = quic_data->data.bufs_head;
quic_data->data.bufs_head = buf->send_next;
- red_display_free_compress_buf(dcc, buf);
+ compress_buf_free(buf);
}
return FALSE;
}
@@ -5049,7 +4993,6 @@ static void fill_attr(SpiceMarshaller *m, SpiceLineAttr *attr, uint32_t group_id
static inline void red_display_reset_send_data(DisplayChannelClient *dcc)
{
- red_display_reset_compress_buf(dcc);
dcc->send_data.free_list.res->count = 0;
dcc->send_data.num_pixmap_cache_items = 0;
memset(dcc->send_data.free_list.sync, 0, sizeof(dcc->send_data.free_list.sync));
@@ -7276,14 +7219,10 @@ static void display_channel_client_on_disconnect(RedChannelClient *rcc)
red_release_glz(dcc);
red_reset_palette_cache(dcc);
free(dcc->send_data.stream_outbuf);
- red_display_reset_compress_buf(dcc);
free(dcc->send_data.free_list.res);
dcc_destroy_stream_agents(dcc);
// this was the last channel client
- if (!red_channel_is_connected(rcc->channel)) {
- red_display_destroy_compress_bufs(display);
- }
spice_debug("#draw=%d, #red_draw=%d, #glz_draw=%d",
display->drawable_count, worker->red_drawable_count,
worker->glz_drawable_count);
--
2.4.3
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