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Merge pull request #771 from pkasting/static_init_1

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Remove a static initializer by removing a global of non-POD type.
pull/687/merge
Feng Xiao 9 years ago
parent 67946e98a9 4f3bead537
commit 69ac02a216
2 changed files with 78 additions and 63 deletions
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  1. 109
      src/google/protobuf/extension_set.cc
  2. 32
      src/google/protobuf/extension_set.h

109
src/google/protobuf/extension_set.cc
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@ -34,7 +34,6 @@
#include <google/protobuf/stubs/hash.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/stubs/once.h>
#include <google/protobuf/extension_set.h>
#include <google/protobuf/message_lite.h>
#include <google/protobuf/io/coded_stream.h>
@ -1747,65 +1746,67 @@ void ExtensionSet::Extension::Free() {
// ==================================================================
// Default repeated field instances for iterator-compatible accessors
const RepeatedStringTypeTraits::RepeatedFieldType*
RepeatedStringTypeTraits::default_repeated_field_ = NULL;
const RepeatedMessageGenericTypeTraits::RepeatedFieldType*
RepeatedMessageGenericTypeTraits::default_repeated_field_ = NULL;
GOOGLE_PROTOBUF_DECLARE_ONCE(repeated_primitive_generic_type_traits_once_init_);
GOOGLE_PROTOBUF_DECLARE_ONCE(repeated_string_type_traits_once_init_);
GOOGLE_PROTOBUF_DECLARE_ONCE(repeated_message_generic_type_traits_once_init_);
void RepeatedPrimitiveGenericTypeTraits::InitializeDefaultRepeatedFields() {
default_repeated_field_int32_ = new RepeatedField<int32>;
default_repeated_field_int64_ = new RepeatedField<int64>;
default_repeated_field_uint32_ = new RepeatedField<uint32>;
default_repeated_field_uint64_ = new RepeatedField<uint64>;
default_repeated_field_double_ = new RepeatedField<double>;
default_repeated_field_float_ = new RepeatedField<float>;
default_repeated_field_bool_ = new RepeatedField<bool>;
OnShutdown(&DestroyDefaultRepeatedFields);
}
#define PROTOBUF_DEFINE_DEFAULT_REPEATED(TYPE) \
const RepeatedField<TYPE>* \
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_##TYPE##_ = NULL;
void RepeatedPrimitiveGenericTypeTraits::DestroyDefaultRepeatedFields() {
delete default_repeated_field_int32_;
delete default_repeated_field_int64_;
delete default_repeated_field_uint32_;
delete default_repeated_field_uint64_;
delete default_repeated_field_double_;
delete default_repeated_field_float_;
delete default_repeated_field_bool_;
}
PROTOBUF_DEFINE_DEFAULT_REPEATED(int32)
PROTOBUF_DEFINE_DEFAULT_REPEATED(int64)
PROTOBUF_DEFINE_DEFAULT_REPEATED(uint32)
PROTOBUF_DEFINE_DEFAULT_REPEATED(uint64)
PROTOBUF_DEFINE_DEFAULT_REPEATED(double)
PROTOBUF_DEFINE_DEFAULT_REPEATED(float)
PROTOBUF_DEFINE_DEFAULT_REPEATED(bool)
void RepeatedStringTypeTraits::InitializeDefaultRepeatedFields() {
default_repeated_field_ = new RepeatedFieldType;
OnShutdown(&DestroyDefaultRepeatedFields);
}
#undef PROTOBUF_DEFINE_DEFAULT_REPEATED
void RepeatedStringTypeTraits::DestroyDefaultRepeatedFields() {
delete default_repeated_field_;
}
struct StaticDefaultRepeatedFieldsInitializer {
StaticDefaultRepeatedFieldsInitializer() {
InitializeDefaultRepeatedFields();
void RepeatedMessageGenericTypeTraits::InitializeDefaultRepeatedFields() {
default_repeated_field_ = new RepeatedFieldType;
OnShutdown(&DestroyDefaultRepeatedFields);
}
} static_repeated_fields_initializer;
void InitializeDefaultRepeatedFields() {
RepeatedStringTypeTraits::default_repeated_field_ =
new RepeatedStringTypeTraits::RepeatedFieldType;
RepeatedMessageGenericTypeTraits::default_repeated_field_ =
new RepeatedMessageGenericTypeTraits::RepeatedFieldType;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int32_ =
new RepeatedField<int32>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int64_ =
new RepeatedField<int64>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint32_ =
new RepeatedField<uint32>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint64_ =
new RepeatedField<uint64>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_double_ =
new RepeatedField<double>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_float_ =
new RepeatedField<float>;
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_bool_ =
new RepeatedField<bool>;
}
void DestroyDefaultRepeatedFields() {
delete RepeatedStringTypeTraits::default_repeated_field_;
delete RepeatedMessageGenericTypeTraits::default_repeated_field_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int32_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int64_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint32_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint64_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_double_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_float_;
delete RepeatedPrimitiveGenericTypeTraits::default_repeated_field_bool_;
}
void RepeatedMessageGenericTypeTraits::DestroyDefaultRepeatedFields() {
delete default_repeated_field_;
}
const RepeatedField<int32>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int32_ = NULL;
const RepeatedField<int64>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_int64_ = NULL;
const RepeatedField<uint32>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint32_ = NULL;
const RepeatedField<uint64>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_uint64_ = NULL;
const RepeatedField<double>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_double_ = NULL;
const RepeatedField<float>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_float_ = NULL;
const RepeatedField<bool>*
RepeatedPrimitiveGenericTypeTraits::default_repeated_field_bool_ = NULL;
const RepeatedStringTypeTraits::RepeatedFieldType*
RepeatedStringTypeTraits::default_repeated_field_ = NULL;
const RepeatedMessageGenericTypeTraits::RepeatedFieldType*
RepeatedMessageGenericTypeTraits::default_repeated_field_ = NULL;
} // namespace internal
} // namespace protobuf

32
src/google/protobuf/extension_set.h
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@ -45,6 +45,7 @@
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/stubs/once.h>
#include <google/protobuf/repeated_field.h>
@ -716,15 +717,14 @@ class RepeatedPrimitiveTypeTraits {
static const RepeatedFieldType* GetDefaultRepeatedField();
};
// Declared here so that this can be friended below.
void InitializeDefaultRepeatedFields();
void DestroyDefaultRepeatedFields();
LIBPROTOBUF_EXPORT extern ProtobufOnceType
repeated_primitive_generic_type_traits_once_init_;
class LIBPROTOBUF_EXPORT RepeatedPrimitiveGenericTypeTraits {
private:
template<typename Type> friend class RepeatedPrimitiveTypeTraits;
friend void InitializeDefaultRepeatedFields();
friend void DestroyDefaultRepeatedFields();
static void InitializeDefaultRepeatedFields();
static void DestroyDefaultRepeatedFields();
static const RepeatedField<int32>* default_repeated_field_int32_;
static const RepeatedField<int64>* default_repeated_field_int64_;
static const RepeatedField<uint32>* default_repeated_field_uint32_;
@ -759,6 +759,9 @@ template<> inline void RepeatedPrimitiveTypeTraits<TYPE>::Add( \
} \
template<> inline const RepeatedField<TYPE>* \
RepeatedPrimitiveTypeTraits<TYPE>::GetDefaultRepeatedField() { \
GoogleOnceInit( \
&repeated_primitive_generic_type_traits_once_init_, \
&RepeatedPrimitiveGenericTypeTraits::InitializeDefaultRepeatedFields); \
return RepeatedPrimitiveGenericTypeTraits:: \
default_repeated_field_##TYPE##_; \
} \
@ -812,6 +815,9 @@ class LIBPROTOBUF_EXPORT StringTypeTraits {
}
};
LIBPROTOBUF_EXPORT extern ProtobufOnceType
repeated_string_type_traits_once_init_;
class LIBPROTOBUF_EXPORT RepeatedStringTypeTraits {
public:
typedef const string& ConstType;
@ -855,12 +861,14 @@ class LIBPROTOBUF_EXPORT RepeatedStringTypeTraits {
}
static const RepeatedFieldType* GetDefaultRepeatedField() {
GoogleOnceInit(&repeated_string_type_traits_once_init_,
&InitializeDefaultRepeatedFields);
return default_repeated_field_;
}
private:
friend void InitializeDefaultRepeatedFields();
friend void DestroyDefaultRepeatedFields();
static void InitializeDefaultRepeatedFields();
static void DestroyDefaultRepeatedFields();
static const RepeatedFieldType *default_repeated_field_;
};
@ -1019,6 +1027,9 @@ class RepeatedMessageTypeTraits {
static const RepeatedFieldType* GetDefaultRepeatedField();
};
LIBPROTOBUF_EXPORT extern ProtobufOnceType
repeated_message_generic_type_traits_once_init_;
// This class exists only to hold a generic default empty repeated field for all
// message-type repeated field extensions.
class LIBPROTOBUF_EXPORT RepeatedMessageGenericTypeTraits {
@ -1026,14 +1037,17 @@ class LIBPROTOBUF_EXPORT RepeatedMessageGenericTypeTraits {
typedef RepeatedPtrField< ::google::protobuf::MessageLite*> RepeatedFieldType;
private:
template<typename Type> friend class RepeatedMessageTypeTraits;
friend void InitializeDefaultRepeatedFields();
friend void DestroyDefaultRepeatedFields();
static void InitializeDefaultRepeatedFields();
static void DestroyDefaultRepeatedFields();
static const RepeatedFieldType* default_repeated_field_;
};
template<typename Type> inline
const typename RepeatedMessageTypeTraits<Type>::RepeatedFieldType*
RepeatedMessageTypeTraits<Type>::GetDefaultRepeatedField() {
GoogleOnceInit(
&repeated_message_generic_type_traits_once_init_,
&RepeatedMessageGenericTypeTraits::InitializeDefaultRepeatedFields);
return reinterpret_cast<const RepeatedFieldType*>(
RepeatedMessageGenericTypeTraits::default_repeated_field_);
}

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