diff options
Diffstat (limited to 'src/engine/snapshot.c')
| -rw-r--r-- | src/engine/snapshot.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/engine/snapshot.c b/src/engine/snapshot.c index 40bad21e..3bd2f6de 100644 --- a/src/engine/snapshot.c +++ b/src/engine/snapshot.c @@ -1,4 +1,5 @@ #include "snapshot.h" +#include "compression.h" int *snapitem_data(SNAPSHOT_ITEM *item) { return (int *)(item+1); } @@ -108,11 +109,25 @@ static int diff_item(int *past, int *current, int *out, int size) return needed; } +int snapshot_data_rate[0xffff] = {0}; +int snapshot_data_updates[0xffff] = {0}; +static int snapshot_current = 0; + static void undiff_item(int *past, int *diff, int *out, int size) { while(size) { *out = *past+*diff; + + if(*diff == 0) + snapshot_data_rate[snapshot_current] += 1; + else + { + unsigned char buf[16]; + unsigned char *end = vint_pack(buf, *diff); + snapshot_data_rate[snapshot_current] += (int)(end - (unsigned char*)buf) * 8; + } + out++; past++; diff++; @@ -260,6 +275,7 @@ int snapshot_unpack_delta(SNAPSHOT *from, SNAPSHOT *to, void *srcdata, int data_ itemsize = *data++; type = *data++; id = *data++; + snapshot_current = type; key = (type<<16)|id; @@ -273,9 +289,14 @@ int snapshot_unpack_delta(SNAPSHOT *from, SNAPSHOT *to, void *srcdata, int data_ { /* we got an update so we need to apply the diff */ undiff_item((int *)snapitem_data(snapshot_get_item(from, fromindex)), data, newdata, itemsize/4); + snapshot_data_updates[snapshot_current]++; } else /* no previous, just copy the data */ + { mem_copy(newdata, data, itemsize); + snapshot_data_rate[snapshot_current] += itemsize*8; + snapshot_data_updates[snapshot_current]++; + } data += itemsize/4; } |