[orc-rt] Introduce WrapperFunction APIs. #157091
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Introduces the following key APIs:
`orc_rt_WrapperFunction` defines the signature of an ORC asynchronous wrapper
function:
```
typedef void (*orc_rt_WrapperFunctionReturn)(
orc_rt_SessionRef Session, void *CallCtx,
orc_rt_WrapperFunctionBuffer ResultBytes);
typedef void (*orc_rt_WrapperFunction)(orc_rt_SessionRef Session, void *CallCtx,
orc_rt_WrapperFunctionReturn Return,
orc_rt_WrapperFunctionBuffer ArgBytes);
```
A wrapper function takes a reference to the session object, a context pointer
for the call being made, and a pointer to an orc_rt_WrapperFunctionReturn
function that can be used to send the result bytes.
The `orc_rt::WrapperFunction` utility simplifies the writing of wrapper
functions whose arguments and return values are serialized/deserialized using
an abstract serialization utility.
The `orc_rt::SPSWrapperFunction` utility provides a specialized version of
`orc_rt::WrapperFunction` that uses SPS serialization.
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Introduces the following key APIs:
orc_rt_WrapperFunctiondefines the signature of an ORC asynchronous wrapper function:A wrapper function takes a reference to the session object, a context pointer for the call being made, and a pointer to an orc_rt_WrapperFunctionReturn function that can be used to send the result bytes.
The
orc_rt::WrapperFunctionutility simplifies the writing of wrapper functions whose arguments and return values are serialized/deserialized using an abstract serialization utility.The
orc_rt::SPSWrapperFunctionutility provides a specialized version oforc_rt::WrapperFunctionthat uses SPS serialization.