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@ -34,6 +34,7 @@ |
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#ifndef GRPCXX_IMPL_CODEGEN_CALL_H |
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#define GRPCXX_IMPL_CODEGEN_CALL_H |
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#include <assert.h> |
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#include <cstring> |
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#include <functional> |
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#include <map> |
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@ -50,6 +51,7 @@ |
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#include <grpc++/impl/codegen/status_helper.h> |
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#include <grpc++/impl/codegen/string_ref.h> |
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#include <grpc/impl/codegen/atm.h> |
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#include <grpc/impl/codegen/compression_types.h> |
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#include <grpc/impl/codegen/grpc_types.h> |
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@ -523,14 +525,29 @@ class CallOpClientRecvStatus { |
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/// An abstract collection of CallOpSet's, to be used whenever
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/// CallOpSet objects must be thought of as a group. Each member
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/// of the group should have a shared_ptr back to the collection,
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/// as will the object that instantiates the collection, allowing
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/// for automatic ref-counting. In practice, any actual use should
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/// derive from this base class. This is specifically necessary if
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/// some of the CallOpSet's in the collection are "Sneaky" and don't
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/// report back to the C++ layer CQ operations
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class CallOpSetCollectionInterface |
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: public std::enable_shared_from_this<CallOpSetCollectionInterface> {}; |
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/// of the group should reference the collection, as will the object
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/// that instantiates the collection, allowing for ref-counting.
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/// Any actual use should derive from this base class. This is specifically
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/// necessary if some of the CallOpSet's in the collection are "Sneaky" and
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/// don't report back to the C++ layer CQ operations
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class CallOpSetCollectionInterface { |
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public: |
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CallOpSetCollectionInterface() { |
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gpr_atm_rel_store(&refs_, static_cast<gpr_atm>(1)); |
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} |
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// always allocated against a call arena, no memory free required
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static void operator delete(void* ptr, std::size_t size) { |
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} |
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void Ref() { gpr_atm_no_barrier_fetch_add(&refs_, static_cast<gpr_atm>(1)); } |
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bool Unref() { |
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gpr_atm old = |
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gpr_atm_full_fetch_add(&refs_, static_cast<gpr_atm>(-1)); |
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return (old == static_cast<gpr_atm>(1)); |
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} |
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private: |
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gpr_atm refs_; |
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}; |
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/// An abstract collection of call ops, used to generate the
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/// grpc_call_op structure to pass down to the lower layers,
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@ -539,18 +556,26 @@ class CallOpSetCollectionInterface |
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/// API.
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class CallOpSetInterface : public CompletionQueueTag { |
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public: |
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CallOpSetInterface() {} |
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CallOpSetInterface() : collection_(nullptr) {} |
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~CallOpSetInterface() { ResetCollection(); } |
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/// Fills in grpc_op, starting from ops[*nops] and moving
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/// upwards.
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virtual void FillOps(grpc_op* ops, size_t* nops) = 0; |
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/// Mark this as belonging to a collection if needed
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void SetCollection(std::shared_ptr<CallOpSetCollectionInterface> collection) { |
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void SetCollection(CallOpSetCollectionInterface* collection) { |
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collection_ = collection; |
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collection->Ref(); |
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} |
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void ResetCollection() { |
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if (collection_ != nullptr && collection_->Unref()) { |
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delete collection_; |
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} |
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collection_ = nullptr; |
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} |
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protected: |
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std::shared_ptr<CallOpSetCollectionInterface> collection_; |
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CallOpSetCollectionInterface* collection_; |
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}; |
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/// Primary implementaiton of CallOpSetInterface.
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@ -588,7 +613,7 @@ class CallOpSet : public CallOpSetInterface, |
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this->Op5::FinishOp(status); |
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this->Op6::FinishOp(status); |
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*tag = return_tag_; |
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collection_.reset(); // drop the ref at this point
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ResetCollection(); // drop the ref at this point
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return true; |
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} |
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Craig Tiller
8 years ago
committed by
GitHub