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Data type registrator went the same way - using plain statics instead of in-place allocation at first call. For code size critical applications, GCC flag -fno-threadsafe-statics should be used

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This commit is contained in:
Pavel Kirienko
2014-04-20 23:40:32 +04:00
parent 7a02960401
commit f155702008
1 changed files with 5 additions and 21 deletions
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libuavcan/include/uavcan/node/global_data_type_registry.hpp
+5 -21
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@@ -139,39 +139,23 @@ GlobalDataTypeRegistry::RegistResult GlobalDataTypeRegistry::regist(DataTypeID i
{ {
return RegistResultFrozen; return RegistResultFrozen;
} }
static Entry entry;
static union
{ {
uint8_t buffer[sizeof(Entry)]; const RegistResult remove_res = remove(&entry);
long long _aligner_1;
long double _aligner_2;
} storage;
static bool constructed = false;
if (!constructed)
{
new (storage.buffer) Entry();
constructed = true;
}
Entry* const entry = reinterpret_cast<Entry*>(storage.buffer);
{
const RegistResult remove_res = remove(entry);
if (remove_res != RegistResultOk) if (remove_res != RegistResultOk)
{ {
return remove_res; return remove_res;
} }
} }
new (storage.buffer) Entry(DataTypeKind(Type::DataTypeKind), id, Type::getDataTypeSignature(), entry = Entry(DataTypeKind(Type::DataTypeKind), id, Type::getDataTypeSignature(), Type::getDataTypeFullName());
Type::getDataTypeFullName());
{ {
const RegistResult remove_res = remove(entry); const RegistResult remove_res = remove(&entry);
if (remove_res != RegistResultOk) if (remove_res != RegistResultOk)
{ {
return remove_res; return remove_res;
} }
} }
return registImpl(entry); return registImpl(&entry);
} }
} }