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This commit is contained in:
Eelco Dolstra 2019-04-15 18:40:35 +02:00
parent bb6e6923f2
commit 4237414f4d
23 changed files with 844 additions and 295 deletions
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19
src/libexpr/attr-set.cc
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@ -7,26 +7,25 @@
namespace nix {
/* Allocate a new array of attributes for an attribute set with a specific
capacity. The space is implicitly reserved after the Bindings
structure. */
Bindings * EvalState::allocBindings(size_t capacity)
/* Allocate a new array of attributes for an attribute set with a
specific capacity. The space is implicitly reserved after the
Bindings structure. */
Ptr<Bindings> Bindings::allocBindings(size_t capacity)
{
if (capacity > std::numeric_limits<Bindings::size_t>::max())
if (capacity >= 1UL << Object::miscBits)
throw Error("attribute set of size %d is too big", capacity);
return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity);
return gc.alloc<Bindings>(Bindings::wordsFor(capacity), capacity);
}
void EvalState::mkAttrs(Value & v, size_t capacity)
{
v.type = tAttrs;
if (capacity == 0) {
v = vEmptySet;
v.attrs = emptyBindings;
return;
}
clearValue(v);
v.type = tAttrs;
v.attrs = allocBindings(capacity);
v.attrs = Bindings::allocBindings(capacity);
nrAttrsets++;
nrAttrsInAttrsets += capacity;
}