Built motion from commit 6a09e18b.|2.6.11
[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / lib / surface / channel_ping.cc
diff --git a/legacy-libs/grpc/deps/grpc/src/core/lib/surface/channel_ping.cc b/legacy-libs/grpc/deps/grpc/src/core/lib/surface/channel_ping.cc
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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.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/surface/channel.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/surface/api_trace.h"
+#include "src/core/lib/surface/completion_queue.h"
+
+typedef struct {
+  grpc_closure closure;
+  void* tag;
+  grpc_completion_queue* cq;
+  grpc_cq_completion completion_storage;
+} ping_result;
+
+static void ping_destroy(void* arg, grpc_cq_completion* storage) {
+  gpr_free(arg);
+}
+
+static void ping_done(void* arg, grpc_error* error) {
+  ping_result* pr = static_cast<ping_result*>(arg);
+  grpc_cq_end_op(pr->cq, pr->tag, GRPC_ERROR_REF(error), ping_destroy, pr,
+                 &pr->completion_storage);
+}
+
+void grpc_channel_ping(grpc_channel* channel, grpc_completion_queue* cq,
+                       void* tag, void* reserved) {
+  GRPC_API_TRACE("grpc_channel_ping(channel=%p, cq=%p, tag=%p, reserved=%p)", 4,
+                 (channel, cq, tag, reserved));
+  grpc_transport_op* op = grpc_make_transport_op(nullptr);
+  ping_result* pr = static_cast<ping_result*>(gpr_malloc(sizeof(*pr)));
+  grpc_channel_element* top_elem =
+      grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0);
+  grpc_core::ExecCtx exec_ctx;
+  GPR_ASSERT(reserved == nullptr);
+  pr->tag = tag;
+  pr->cq = cq;
+  GRPC_CLOSURE_INIT(&pr->closure, ping_done, pr, grpc_schedule_on_exec_ctx);
+  op->send_ping.on_ack = &pr->closure;
+  op->bind_pollset = grpc_cq_pollset(cq);
+  GPR_ASSERT(grpc_cq_begin_op(cq, tag));
+  top_elem->filter->start_transport_op(top_elem, op);
+}