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Tune the default size of literal tables.

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This simple change will save about 40mb of memory when indexing Qt Creator!
This commit is contained in:
Roberto Raggi
2010-09-01 14:10:25 +02:00
parent b30ef6210b
commit 700433fc16
1 changed files with 5 additions and 14 deletions
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19
src/shared/cplusplus/LiteralTable.h
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@@ -66,9 +66,9 @@ public:
public:
LiteralTable()
: _literals(0),
_buckets(0),
_allocatedLiterals(0),
_literalCount(-1),
_buckets(0),
_allocatedBuckets(0)
{ }
@@ -127,17 +127,13 @@ public:
_Literal *literal = new _Literal(chars, size);
if (++_literalCount == _allocatedLiterals) {
_allocatedLiterals <<= 1;
if (! _allocatedLiterals)
_allocatedLiterals = 256;
_allocatedLiterals += 32;
_literals = (_Literal **) std::realloc(_literals, sizeof(_Literal *) * _allocatedLiterals);
}
_literals[_literalCount] = literal;
if (! _buckets || _literalCount >= _allocatedBuckets * .6)
if (! _buckets || _literalCount * 5 >= _allocatedBuckets * 3)
rehash();
else {
unsigned h = literal->hashCode() % _allocatedBuckets;
@@ -154,11 +150,7 @@ protected:
if (_buckets)
std::free(_buckets);
_allocatedBuckets <<= 1;
if (! _allocatedBuckets)
_allocatedBuckets = 256;
_allocatedBuckets += 32;
_buckets = (_Literal **) std::calloc(_allocatedBuckets, sizeof(_Literal *));
_Literal **lastLiteral = _literals + (_literalCount + 1);
@@ -174,10 +166,9 @@ protected:
protected:
_Literal **_literals;
_Literal **_buckets;
int _allocatedLiterals;
int _literalCount;
_Literal **_buckets;
int _allocatedBuckets;
};