--- /dev/null
+/*
+ *
+ * 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 GRPC_CORE_LIB_SURFACE_CHANNEL_H
+#define GRPC_CORE_LIB_SURFACE_CHANNEL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+#include "src/core/lib/channel/channel_stack_builder.h"
+#include "src/core/lib/channel/channelz.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+
+grpc_channel* grpc_channel_create(const char* target,
+ const grpc_channel_args* args,
+ grpc_channel_stack_type channel_stack_type,
+ grpc_transport* optional_transport,
+ grpc_resource_user* resource_user = nullptr);
+
+grpc_channel* grpc_channel_create_with_builder(
+ grpc_channel_stack_builder* builder,
+ grpc_channel_stack_type channel_stack_type);
+
+/** Create a call given a grpc_channel, in order to call \a method.
+ Progress is tied to activity on \a pollset_set. The returned call object is
+ meant to be used with \a grpc_call_start_batch_and_execute, which relies on
+ callbacks to signal completions. \a method and \a host need
+ only live through the invocation of this function. If \a parent_call is
+ non-NULL, it must be a server-side call. It will be used to propagate
+ properties from the server call to this new client call, depending on the
+ value of \a propagation_mask (see propagation_bits.h for possible values) */
+grpc_call* grpc_channel_create_pollset_set_call(
+ grpc_channel* channel, grpc_call* parent_call, uint32_t propagation_mask,
+ grpc_pollset_set* pollset_set, const grpc_slice& method,
+ const grpc_slice* host, grpc_millis deadline, void* reserved);
+
+/** Get a (borrowed) pointer to this channels underlying channel stack */
+grpc_channel_stack* grpc_channel_get_channel_stack(grpc_channel* channel);
+
+grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+ grpc_channel* channel);
+
+/** Get a grpc_mdelem of grpc-status: X where X is the numeric value of
+ status_code.
+
+ The returned elem is owned by the caller. */
+grpc_mdelem grpc_channel_get_reffed_status_elem_slowpath(grpc_channel* channel,
+ int status_code);
+inline grpc_mdelem grpc_channel_get_reffed_status_elem(grpc_channel* channel,
+ int status_code) {
+ switch (status_code) {
+ case 0:
+ return GRPC_MDELEM_GRPC_STATUS_0;
+ case 1:
+ return GRPC_MDELEM_GRPC_STATUS_1;
+ case 2:
+ return GRPC_MDELEM_GRPC_STATUS_2;
+ }
+ return grpc_channel_get_reffed_status_elem_slowpath(channel, status_code);
+}
+
+size_t grpc_channel_get_call_size_estimate(grpc_channel* channel);
+void grpc_channel_update_call_size_estimate(grpc_channel* channel, size_t size);
+
+struct registered_call;
+struct grpc_channel {
+ int is_client;
+ grpc_compression_options compression_options;
+
+ gpr_atm call_size_estimate;
+ grpc_resource_user* resource_user;
+
+ gpr_mu registered_call_mu;
+ registered_call* registered_calls;
+
+ grpc_core::RefCountedPtr<grpc_core::channelz::ChannelNode> channelz_node;
+
+ char* target;
+};
+#define CHANNEL_STACK_FROM_CHANNEL(c) ((grpc_channel_stack*)((c) + 1))
+
+inline grpc_compression_options grpc_channel_compression_options(
+ const grpc_channel* channel) {
+ return channel->compression_options;
+}
+
+inline grpc_channel_stack* grpc_channel_get_channel_stack(
+ grpc_channel* channel) {
+ return CHANNEL_STACK_FROM_CHANNEL(channel);
+}
+
+inline grpc_core::channelz::ChannelNode* grpc_channel_get_channelz_node(
+ grpc_channel* channel) {
+ return channel->channelz_node.get();
+}
+
+#ifndef NDEBUG
+inline void grpc_channel_internal_ref(grpc_channel* channel,
+ const char* reason) {
+ GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel,
+ const char* reason) {
+ GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), reason);
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+ grpc_channel_internal_ref(channel, reason)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+ grpc_channel_internal_unref(channel, reason)
+#else
+inline void grpc_channel_internal_ref(grpc_channel* channel) {
+ GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+inline void grpc_channel_internal_unref(grpc_channel* channel) {
+ GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CHANNEL(channel), "unused");
+}
+#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \
+ grpc_channel_internal_ref(channel)
+#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \
+ grpc_channel_internal_unref(channel)
+#endif
+
+/** Return the channel's compression options. */
+grpc_compression_options grpc_channel_compression_options(
+ const grpc_channel* channel);
+
+#endif /* GRPC_CORE_LIB_SURFACE_CHANNEL_H */