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-rw-r--r--pack-objects.h70
1 files changed, 61 insertions, 9 deletions
diff --git a/pack-objects.h b/pack-objects.h
index c340361..3cd8d1f 100644
--- a/pack-objects.h
+++ b/pack-objects.h
@@ -5,6 +5,8 @@
#include "thread-utils.h"
#include "pack.h"
+struct repository;
+
#define DEFAULT_DELTA_CACHE_SIZE (256 * 1024 * 1024)
#define OE_DFS_STATE_BITS 2
@@ -103,6 +105,7 @@ struct object_entry {
unsigned no_try_delta:1;
unsigned type_:TYPE_BITS;
unsigned in_pack_type:TYPE_BITS; /* could be delta */
+
unsigned preferred_base:1; /*
* we do not pack this, but is available
* to be used as the base object to delta
@@ -112,6 +115,7 @@ struct object_entry {
unsigned filled:1; /* assigned write-order */
unsigned dfs_state:OE_DFS_STATE_BITS;
unsigned depth:OE_DEPTH_BITS;
+ unsigned ext_base:1; /* delta_idx points outside packlist */
/*
* pahole results on 64-bit linux (gcc and clang)
@@ -125,6 +129,7 @@ struct object_entry {
};
struct packing_data {
+ struct repository *repo;
struct object_entry *objects;
uint32_t nr_objects, nr_alloc;
@@ -143,27 +148,33 @@ struct packing_data {
struct packed_git **in_pack_by_idx;
struct packed_git **in_pack;
-#ifndef NO_PTHREADS
pthread_mutex_t lock;
-#endif
+
+ /*
+ * This list contains entries for bases which we know the other side
+ * has (e.g., via reachability bitmaps), but which aren't in our
+ * "objects" list.
+ */
+ struct object_entry *ext_bases;
+ uint32_t nr_ext, alloc_ext;
uintmax_t oe_size_limit;
uintmax_t oe_delta_size_limit;
+
+ /* delta islands */
+ unsigned int *tree_depth;
+ unsigned char *layer;
};
-void prepare_packing_data(struct packing_data *pdata);
+void prepare_packing_data(struct repository *r, struct packing_data *pdata);
static inline void packing_data_lock(struct packing_data *pdata)
{
-#ifndef NO_PTHREADS
pthread_mutex_lock(&pdata->lock);
-#endif
}
static inline void packing_data_unlock(struct packing_data *pdata)
{
-#ifndef NO_PTHREADS
pthread_mutex_unlock(&pdata->lock);
-#endif
}
struct object_entry *packlist_alloc(struct packing_data *pdata,
@@ -249,9 +260,12 @@ static inline struct object_entry *oe_delta(
const struct packing_data *pack,
const struct object_entry *e)
{
- if (e->delta_idx)
+ if (!e->delta_idx)
+ return NULL;
+ if (e->ext_base)
+ return &pack->ext_bases[e->delta_idx - 1];
+ else
return &pack->objects[e->delta_idx - 1];
- return NULL;
}
static inline void oe_set_delta(struct packing_data *pack,
@@ -264,6 +278,10 @@ static inline void oe_set_delta(struct packing_data *pack,
e->delta_idx = 0;
}
+void oe_set_delta_ext(struct packing_data *pack,
+ struct object_entry *e,
+ const unsigned char *sha1);
+
static inline struct object_entry *oe_delta_child(
const struct packing_data *pack,
const struct object_entry *e)
@@ -384,4 +402,38 @@ static inline void oe_set_delta_size(struct packing_data *pack,
}
}
+static inline unsigned int oe_tree_depth(struct packing_data *pack,
+ struct object_entry *e)
+{
+ if (!pack->tree_depth)
+ return 0;
+ return pack->tree_depth[e - pack->objects];
+}
+
+static inline void oe_set_tree_depth(struct packing_data *pack,
+ struct object_entry *e,
+ unsigned int tree_depth)
+{
+ if (!pack->tree_depth)
+ CALLOC_ARRAY(pack->tree_depth, pack->nr_alloc);
+ pack->tree_depth[e - pack->objects] = tree_depth;
+}
+
+static inline unsigned char oe_layer(struct packing_data *pack,
+ struct object_entry *e)
+{
+ if (!pack->layer)
+ return 0;
+ return pack->layer[e - pack->objects];
+}
+
+static inline void oe_set_layer(struct packing_data *pack,
+ struct object_entry *e,
+ unsigned char layer)
+{
+ if (!pack->layer)
+ CALLOC_ARRAY(pack->layer, pack->nr_alloc);
+ pack->layer[e - pack->objects] = layer;
+}
+
#endif