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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
#define GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
#include <cassert>
#include <grpc/impl/codegen/byte_buffer_reader.h>
#include <grpc/impl/codegen/grpc_types.h>
#include <grpc/impl/codegen/sync.h>
#include <grpcpp/impl/codegen/config.h>
#include <grpcpp/impl/codegen/status.h>
namespace grpc {
/// Interface between the codegen library and the minimal subset of core
/// features required by the generated code.
///
/// All undocumented methods are simply forwarding the call to their namesakes.
/// Please refer to their corresponding documentation for details.
///
/// \warning This interface should be considered internal and private.
class CoreCodegenInterface {
public:
virtual ~CoreCodegenInterface() = default;
/// Upon a failed assertion, log the error.
virtual void assert_fail(const char* failed_assertion, const char* file,
int line) = 0;
virtual const grpc_completion_queue_factory*
grpc_completion_queue_factory_lookup(
const grpc_completion_queue_attributes* attributes) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create(
const grpc_completion_queue_factory* factory,
const grpc_completion_queue_attributes* attributes, void* reserved) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create_for_next(
void* reserved) = 0;
virtual grpc_completion_queue* grpc_completion_queue_create_for_pluck(
void* reserved) = 0;
virtual void grpc_completion_queue_destroy(grpc_completion_queue* cq) = 0;
virtual grpc_event grpc_completion_queue_pluck(grpc_completion_queue* cq,
void* tag,
gpr_timespec deadline,
void* reserved) = 0;
virtual void* gpr_malloc(size_t size) = 0;
virtual void gpr_free(void* p) = 0;
// These are only to be used to fix edge cases involving grpc_init and
// grpc_shutdown. Calling grpc_init from the codegen interface before
// the real grpc_init is called will cause a crash, so if you use this
// function, ensure that it is not the first call to grpc_init.
virtual void grpc_init() = 0;
virtual void grpc_shutdown() = 0;
virtual void gpr_mu_init(gpr_mu* mu) = 0;
virtual void gpr_mu_destroy(gpr_mu* mu) = 0;
virtual void gpr_mu_lock(gpr_mu* mu) = 0;
virtual void gpr_mu_unlock(gpr_mu* mu) = 0;
virtual void gpr_cv_init(gpr_cv* cv) = 0;
virtual void gpr_cv_destroy(gpr_cv* cv) = 0;
virtual int gpr_cv_wait(gpr_cv* cv, gpr_mu* mu,
gpr_timespec abs_deadline) = 0;
virtual void gpr_cv_signal(gpr_cv* cv) = 0;
virtual void gpr_cv_broadcast(gpr_cv* cv) = 0;
virtual grpc_byte_buffer* grpc_byte_buffer_copy(grpc_byte_buffer* bb) = 0;
virtual void grpc_byte_buffer_destroy(grpc_byte_buffer* bb) = 0;
virtual size_t grpc_byte_buffer_length(grpc_byte_buffer* bb)
GRPC_MUST_USE_RESULT = 0;
virtual int grpc_byte_buffer_reader_init(grpc_byte_buffer_reader* reader,
grpc_byte_buffer* buffer)
GRPC_MUST_USE_RESULT = 0;
virtual void grpc_byte_buffer_reader_destroy(
grpc_byte_buffer_reader* reader) = 0;
virtual int grpc_byte_buffer_reader_next(grpc_byte_buffer_reader* reader,
grpc_slice* slice) = 0;
virtual grpc_byte_buffer* grpc_raw_byte_buffer_create(grpc_slice* slice,
size_t nslices) = 0;
virtual grpc_slice grpc_slice_new_with_user_data(void* p, size_t len,
void (*destroy)(void*),
void* user_data) = 0;
virtual grpc_slice grpc_slice_new_with_len(void* p, size_t len,
void (*destroy)(void*,
size_t)) = 0;
virtual grpc_call_error grpc_call_start_batch(grpc_call* call,
const grpc_op* ops, size_t nops,
void* tag, void* reserved) = 0;
virtual grpc_call_error grpc_call_cancel_with_status(grpc_call* call,
grpc_status_code status,
const char* description,
void* reserved) = 0;
virtual void grpc_call_ref(grpc_call* call) = 0;
virtual void grpc_call_unref(grpc_call* call) = 0;
virtual void* grpc_call_arena_alloc(grpc_call* call, size_t length) = 0;
virtual grpc_slice grpc_empty_slice() = 0;
virtual grpc_slice grpc_slice_malloc(size_t length) = 0;
virtual void grpc_slice_unref(grpc_slice slice) = 0;
virtual grpc_slice grpc_slice_ref(grpc_slice slice) = 0;
virtual grpc_slice grpc_slice_split_tail(grpc_slice* s, size_t split) = 0;
virtual grpc_slice grpc_slice_split_head(grpc_slice* s, size_t split) = 0;
virtual grpc_slice grpc_slice_sub(grpc_slice s, size_t begin, size_t end) = 0;
virtual void grpc_slice_buffer_add(grpc_slice_buffer* sb,
grpc_slice slice) = 0;
virtual void grpc_slice_buffer_pop(grpc_slice_buffer* sb) = 0;
virtual grpc_slice grpc_slice_from_static_buffer(const void* buffer,
size_t length) = 0;
virtual grpc_slice grpc_slice_from_copied_buffer(const void* buffer,
size_t length) = 0;
virtual void grpc_metadata_array_init(grpc_metadata_array* array) = 0;
virtual void grpc_metadata_array_destroy(grpc_metadata_array* array) = 0;
virtual const Status& ok() = 0;
virtual const Status& cancelled() = 0;
virtual gpr_timespec gpr_inf_future(gpr_clock_type type) = 0;
virtual gpr_timespec gpr_time_0(gpr_clock_type type) = 0;
};
extern CoreCodegenInterface* g_core_codegen_interface;
/// Codegen specific version of \a GPR_ASSERT.
#define GPR_CODEGEN_ASSERT(x) \
do { \
if (!(x)) { \
grpc::g_core_codegen_interface->assert_fail(#x, __FILE__, __LINE__); \
} \
} while (0)
/// Codegen specific version of \a GPR_DEBUG_ASSERT.
#ifndef NDEBUG
#define GPR_CODEGEN_DEBUG_ASSERT(x) GPR_CODEGEN_ASSERT(x)
#else
#define GPR_CODEGEN_DEBUG_ASSERT(x) \
do { \
} while (0)
#endif
} // namespace grpc
#endif // GRPCPP_IMPL_CODEGEN_CORE_CODEGEN_INTERFACE_H
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