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DVE2: Minor memory compaction.

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* iface/dve2/dve2.cc (dve2_state, dve2_compressed_state): Store
size and count on 16 bits, and hash on 32 bits, to limit memory
wasted.
This commit is contained in:
Alexandre Duret-Lutz 2011-05-02 14:46:01 +02:00
parent bf8becccea
commit ff43212e67
2 changed files with 17 additions and 9 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2011-05-02 Alexandre Duret-Lutz <adl@va-et-vient.net>
DVE2: Minor memory compaction.
* iface/dve2/dve2.cc (dve2_state, dve2_compressed_state): Store
size and count on 16 bits, and hash on 32 bits, to limit memory
wasted.
2011-05-01 Alexandre Duret-Lutz <adl@lrde.epita.fr> 2011-05-01 Alexandre Duret-Lutz <adl@lrde.epita.fr>
DVE2: Optionally use the new compression. DVE2: Optionally use the new compression.

18
iface/dve2/dve2.cc
View file

@ -74,7 +74,7 @@ namespace spot
struct dve2_state: public state struct dve2_state: public state
{ {
dve2_state(int s, fixed_size_pool* p) dve2_state(int s, fixed_size_pool* p)
: size(s), count(1), pool(p) : pool(p), size(s), count(1)
{ {
} }
@ -123,17 +123,17 @@ namespace spot
} }
public: public:
int size;
mutable unsigned count;
size_t hash_value;
fixed_size_pool* pool; fixed_size_pool* pool;
size_t hash_value: 32;
int size: 16;
mutable unsigned count: 16;
int vars[0]; int vars[0];
}; };
struct dve2_compressed_state: public state struct dve2_compressed_state: public state
{ {
dve2_compressed_state(int s, multiple_size_pool* p) dve2_compressed_state(int s, multiple_size_pool* p)
: size(s), count(1), pool(p) : pool(p), size(s), count(1)
{ {
} }
@ -154,7 +154,7 @@ namespace spot
{ {
if (--count) if (--count)
return; return;
pool->deallocate(this, sizeof(*this) + size * sizeof(int)); pool->deallocate(this, sizeof(*this) + size * sizeof(*vars));
} }
size_t hash() const size_t hash() const
@ -189,10 +189,10 @@ namespace spot
} }
public: public:
int size;
mutable unsigned count;
size_t hash_value;
multiple_size_pool* pool; multiple_size_pool* pool;
size_t hash_value: 32;
int size: 16;
mutable unsigned count: 16;
int vars[0]; int vars[0];
}; };