test/core/surface/completion_queue_test.cc - platform/external/grpc-grpc - Git at Google

 /*
  *
  * 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 "src/core/lib/surface/completion_queue.h"

 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/time.h>
 #include "src/core/lib/gpr/useful.h"
 #include "src/core/lib/gprpp/memory.h"
 #include "src/core/lib/iomgr/iomgr.h"
 #include "test/core/util/test_config.h"

 #define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)

 static void* create_test_tag(void) {
   static intptr_t i = 0;
   return (void*)(++i);
 }

 /* helper for tests to shutdown correctly and tersely */
 static void shutdown_and_destroy(grpc_completion_queue* cc) {
   grpc_event ev;
   grpc_completion_queue_shutdown(cc);

   switch (grpc_get_cq_completion_type(cc)) {
     case GRPC_CQ_NEXT: {
       ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
                                       nullptr);
       GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
       break;
     }
     case GRPC_CQ_PLUCK: {
       ev = grpc_completion_queue_pluck(
           cc, create_test_tag(), gpr_inf_past(GPR_CLOCK_REALTIME), nullptr);
       GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
       break;
     }
     case GRPC_CQ_CALLBACK: {
       // Nothing to do here. The shutdown callback will be invoked when
       // possible.
       break;
     }
     default: {
       gpr_log(GPR_ERROR, "Unknown completion type");
       break;
     }
   }

   grpc_completion_queue_destroy(cc);
 }

 /* ensure we can create and destroy a completion channel */
 static void test_no_op(void) {
   grpc_cq_completion_type completion_types[] = {GRPC_CQ_NEXT, GRPC_CQ_PLUCK};
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   LOG_TEST("test_no_op");

   attr.version = 1;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(completion_types); i++) {
     for (size_t j = 0; j < GPR_ARRAY_SIZE(polling_types); j++) {
       attr.cq_completion_type = completion_types[i];
       attr.cq_polling_type = polling_types[j];
       shutdown_and_destroy(grpc_completion_queue_create(
           grpc_completion_queue_factory_lookup(&attr), &attr, nullptr));
     }
   }
 }

 static void test_pollset_conversion(void) {
   grpc_cq_completion_type completion_types[] = {GRPC_CQ_NEXT, GRPC_CQ_PLUCK};
   grpc_cq_polling_type polling_types[] = {GRPC_CQ_DEFAULT_POLLING,
                                           GRPC_CQ_NON_LISTENING};
   grpc_completion_queue* cq;
   grpc_completion_queue_attributes attr;

   LOG_TEST("test_pollset_conversion");

   attr.version = 1;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(completion_types); i++) {
     for (size_t j = 0; j < GPR_ARRAY_SIZE(polling_types); j++) {
       attr.cq_completion_type = completion_types[i];
       attr.cq_polling_type = polling_types[j];
       cq = grpc_completion_queue_create(
           grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
       GPR_ASSERT(grpc_cq_pollset(cq) != nullptr);
       shutdown_and_destroy(cq);
     }
   }
 }

 static void test_wait_empty(void) {
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue* cc;
   grpc_completion_queue_attributes attr;
   grpc_event event;

   LOG_TEST("test_wait_empty");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
     event =
         grpc_completion_queue_next(cc, gpr_now(GPR_CLOCK_REALTIME), nullptr);
     GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
     shutdown_and_destroy(cc);
   }
 }

 static void do_nothing_end_completion(void* arg, grpc_cq_completion* c) {}

 static void test_cq_end_op(void) {
   grpc_event ev;
   grpc_completion_queue* cc;
   grpc_cq_completion completion;
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   void* tag = create_test_tag();

   LOG_TEST("test_cq_end_op");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     grpc_core::ExecCtx exec_ctx;
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     GPR_ASSERT(grpc_cq_begin_op(cc, tag));
     grpc_cq_end_op(cc, tag, GRPC_ERROR_NONE, do_nothing_end_completion, nullptr,
                    &completion);

     ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
                                     nullptr);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
     GPR_ASSERT(ev.success);

     shutdown_and_destroy(cc);
   }
 }

 static void test_cq_tls_cache_full(void) {
   grpc_event ev;
   grpc_completion_queue* cc;
   grpc_cq_completion completion;
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   void* tag = create_test_tag();
   void* res_tag;
   int ok;

   LOG_TEST("test_cq_tls_cache_full");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     grpc_core::ExecCtx exec_ctx;  // Reset exec_ctx
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     grpc_completion_queue_thread_local_cache_init(cc);
     GPR_ASSERT(grpc_cq_begin_op(cc, tag));
     grpc_cq_end_op(cc, tag, GRPC_ERROR_NONE, do_nothing_end_completion, nullptr,
                    &completion);

     ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
                                     nullptr);
     GPR_ASSERT(ev.type == GRPC_QUEUE_TIMEOUT);

     GPR_ASSERT(
         grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 1);
     GPR_ASSERT(res_tag == tag);
     GPR_ASSERT(ok);

     ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
                                     nullptr);
     GPR_ASSERT(ev.type == GRPC_QUEUE_TIMEOUT);

     shutdown_and_destroy(cc);
   }
 }

 static void test_cq_tls_cache_empty(void) {
   grpc_completion_queue* cc;
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   void* res_tag;
   int ok;

   LOG_TEST("test_cq_tls_cache_empty");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     grpc_core::ExecCtx exec_ctx;  // Reset exec_ctx
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     GPR_ASSERT(
         grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 0);
     grpc_completion_queue_thread_local_cache_init(cc);
     GPR_ASSERT(
         grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 0);
     shutdown_and_destroy(cc);
   }
 }

 static void test_shutdown_then_next_polling(void) {
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue* cc;
   grpc_completion_queue_attributes attr;
   grpc_event event;
   LOG_TEST("test_shutdown_then_next_polling");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
     grpc_completion_queue_shutdown(cc);
     event = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
                                        nullptr);
     GPR_ASSERT(event.type == GRPC_QUEUE_SHUTDOWN);
     grpc_completion_queue_destroy(cc);
   }
 }

 static void test_shutdown_then_next_with_timeout(void) {
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue* cc;
   grpc_completion_queue_attributes attr;
   grpc_event event;
   LOG_TEST("test_shutdown_then_next_with_timeout");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_NEXT;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     grpc_completion_queue_shutdown(cc);
     event = grpc_completion_queue_next(cc, gpr_inf_future(GPR_CLOCK_REALTIME),
                                        nullptr);
     GPR_ASSERT(event.type == GRPC_QUEUE_SHUTDOWN);
     grpc_completion_queue_destroy(cc);
   }
 }

 static void test_pluck(void) {
   grpc_event ev;
   grpc_completion_queue* cc;
   void* tags[128];
   grpc_cq_completion completions[GPR_ARRAY_SIZE(tags)];
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   unsigned i, j;

   LOG_TEST("test_pluck");

   for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
     tags[i] = create_test_tag();
     for (j = 0; j < i; j++) {
       GPR_ASSERT(tags[i] != tags[j]);
     }
   }

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_PLUCK;
   for (size_t pidx = 0; pidx < GPR_ARRAY_SIZE(polling_types); pidx++) {
     grpc_core::ExecCtx exec_ctx;  // reset exec_ctx
     attr.cq_polling_type = polling_types[pidx];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
       grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
                      nullptr, &completions[i]);
     }

     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       ev = grpc_completion_queue_pluck(
           cc, tags[i], gpr_inf_past(GPR_CLOCK_REALTIME), nullptr);
       GPR_ASSERT(ev.tag == tags[i]);
     }

     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
       grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
                      nullptr, &completions[i]);
     }

     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       ev = grpc_completion_queue_pluck(cc, tags[GPR_ARRAY_SIZE(tags) - i - 1],
                                        gpr_inf_past(GPR_CLOCK_REALTIME),
                                        nullptr);
       GPR_ASSERT(ev.tag == tags[GPR_ARRAY_SIZE(tags) - i - 1]);
     }

     shutdown_and_destroy(cc);
   }
 }

 static void test_pluck_after_shutdown(void) {
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_event ev;
   grpc_completion_queue* cc;
   grpc_completion_queue_attributes attr;

   LOG_TEST("test_pluck_after_shutdown");

   attr.version = 1;
   attr.cq_completion_type = GRPC_CQ_PLUCK;
   for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
     attr.cq_polling_type = polling_types[i];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
     grpc_completion_queue_shutdown(cc);
     ev = grpc_completion_queue_pluck(
         cc, nullptr, gpr_inf_future(GPR_CLOCK_REALTIME), nullptr);
     GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
     grpc_completion_queue_destroy(cc);
   }
 }

 static void test_callback(void) {
   grpc_completion_queue* cc;
   void* tags[128];
   grpc_cq_completion completions[GPR_ARRAY_SIZE(tags)];
   grpc_cq_polling_type polling_types[] = {
       GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
   grpc_completion_queue_attributes attr;
   unsigned i;

   LOG_TEST("test_callback");

   bool got_shutdown = false;
   class ShutdownCallback : public grpc_experimental_completion_queue_functor {
    public:
     ShutdownCallback(bool* done) : done_(done) {
       functor_run = &ShutdownCallback::Run;
     }
     ~ShutdownCallback() {}
     static void Run(grpc_experimental_completion_queue_functor* cb, int ok) {
       *static_cast<ShutdownCallback*>(cb)->done_ = static_cast<bool>(ok);
     }

    private:
     bool* done_;
   };
   ShutdownCallback shutdown_cb(&got_shutdown);

   attr.version = 2;
   attr.cq_completion_type = GRPC_CQ_CALLBACK;
   attr.cq_shutdown_cb = &shutdown_cb;

   for (size_t pidx = 0; pidx < GPR_ARRAY_SIZE(polling_types); pidx++) {
     grpc_core::ExecCtx exec_ctx;  // reset exec_ctx
     attr.cq_polling_type = polling_types[pidx];
     cc = grpc_completion_queue_create(
         grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

     int counter = 0;
     class TagCallback : public grpc_experimental_completion_queue_functor {
      public:
       TagCallback(int* counter, int tag) : counter_(counter), tag_(tag) {
         functor_run = &TagCallback::Run;
       }
       ~TagCallback() {}
       static void Run(grpc_experimental_completion_queue_functor* cb, int ok) {
         GPR_ASSERT(static_cast<bool>(ok));
         auto* callback = static_cast<TagCallback*>(cb);
         *callback->counter_ += callback->tag_;
         grpc_core::Delete(callback);
       };

      private:
       int* counter_;
       int tag_;
     };

     int sumtags = 0;
     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       tags[i] = static_cast<void*>(grpc_core::New<TagCallback>(&counter, i));
       sumtags += i;
     }

     for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
       GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
       grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
                      nullptr, &completions[i]);
     }

     GPR_ASSERT(sumtags == counter);

     shutdown_and_destroy(cc);

     GPR_ASSERT(got_shutdown);
     got_shutdown = false;
   }
 }

 struct thread_state {
   grpc_completion_queue* cc;
   void* tag;
 };

 int main(int argc, char** argv) {
   grpc_test_init(argc, argv);
   grpc_init();
   test_no_op();
   test_pollset_conversion();
   test_wait_empty();
   test_shutdown_then_next_polling();
   test_shutdown_then_next_with_timeout();
   test_cq_end_op();
   test_pluck();
   test_pluck_after_shutdown();
   test_cq_tls_cache_full();
   test_cq_tls_cache_empty();
   test_callback();
   grpc_shutdown();
   return 0;
 }
	/*
	*
	* 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 "src/core/lib/surface/completion_queue.h"

	#include <grpc/support/alloc.h>
	#include <grpc/support/log.h>
	#include <grpc/support/time.h>
	#include "src/core/lib/gpr/useful.h"
	#include "src/core/lib/gprpp/memory.h"
	#include "src/core/lib/iomgr/iomgr.h"
	#include "test/core/util/test_config.h"

	#define LOG_TEST(x) gpr_log(GPR_INFO, "%s", x)

	static void* create_test_tag(void) {
	static intptr_t i = 0;
	return (void*)(++i);
	}

	/* helper for tests to shutdown correctly and tersely */
	static void shutdown_and_destroy(grpc_completion_queue* cc) {
	grpc_event ev;
	grpc_completion_queue_shutdown(cc);

	switch (grpc_get_cq_completion_type(cc)) {
	case GRPC_CQ_NEXT: {
	ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
	break;
	}
	case GRPC_CQ_PLUCK: {
	ev = grpc_completion_queue_pluck(
	cc, create_test_tag(), gpr_inf_past(GPR_CLOCK_REALTIME), nullptr);
	GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
	break;
	}
	case GRPC_CQ_CALLBACK: {
	// Nothing to do here. The shutdown callback will be invoked when
	// possible.
	break;
	}
	default: {
	gpr_log(GPR_ERROR, "Unknown completion type");
	break;
	}
	}

	grpc_completion_queue_destroy(cc);
	}

	/* ensure we can create and destroy a completion channel */
	static void test_no_op(void) {
	grpc_cq_completion_type completion_types[] = {GRPC_CQ_NEXT, GRPC_CQ_PLUCK};
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	LOG_TEST("test_no_op");

	attr.version = 1;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(completion_types); i++) {
	for (size_t j = 0; j < GPR_ARRAY_SIZE(polling_types); j++) {
	attr.cq_completion_type = completion_types[i];
	attr.cq_polling_type = polling_types[j];
	shutdown_and_destroy(grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr));
	}
	}
	}

	static void test_pollset_conversion(void) {
	grpc_cq_completion_type completion_types[] = {GRPC_CQ_NEXT, GRPC_CQ_PLUCK};
	grpc_cq_polling_type polling_types[] = {GRPC_CQ_DEFAULT_POLLING,
	GRPC_CQ_NON_LISTENING};
	grpc_completion_queue* cq;
	grpc_completion_queue_attributes attr;

	LOG_TEST("test_pollset_conversion");

	attr.version = 1;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(completion_types); i++) {
	for (size_t j = 0; j < GPR_ARRAY_SIZE(polling_types); j++) {
	attr.cq_completion_type = completion_types[i];
	attr.cq_polling_type = polling_types[j];
	cq = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
	GPR_ASSERT(grpc_cq_pollset(cq) != nullptr);
	shutdown_and_destroy(cq);
	}
	}
	}

	static void test_wait_empty(void) {
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue* cc;
	grpc_completion_queue_attributes attr;
	grpc_event event;

	LOG_TEST("test_wait_empty");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
	event =
	grpc_completion_queue_next(cc, gpr_now(GPR_CLOCK_REALTIME), nullptr);
	GPR_ASSERT(event.type == GRPC_QUEUE_TIMEOUT);
	shutdown_and_destroy(cc);
	}
	}

	static void do_nothing_end_completion(void* arg, grpc_cq_completion* c) {}

	static void test_cq_end_op(void) {
	grpc_event ev;
	grpc_completion_queue* cc;
	grpc_cq_completion completion;
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	void* tag = create_test_tag();

	LOG_TEST("test_cq_end_op");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	grpc_core::ExecCtx exec_ctx;
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	GPR_ASSERT(grpc_cq_begin_op(cc, tag));
	grpc_cq_end_op(cc, tag, GRPC_ERROR_NONE, do_nothing_end_completion, nullptr,
	&completion);

	ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
	GPR_ASSERT(ev.tag == tag);
	GPR_ASSERT(ev.success);

	shutdown_and_destroy(cc);
	}
	}

	static void test_cq_tls_cache_full(void) {
	grpc_event ev;
	grpc_completion_queue* cc;
	grpc_cq_completion completion;
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	void* tag = create_test_tag();
	void* res_tag;
	int ok;

	LOG_TEST("test_cq_tls_cache_full");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	grpc_core::ExecCtx exec_ctx; // Reset exec_ctx
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	grpc_completion_queue_thread_local_cache_init(cc);
	GPR_ASSERT(grpc_cq_begin_op(cc, tag));
	grpc_cq_end_op(cc, tag, GRPC_ERROR_NONE, do_nothing_end_completion, nullptr,
	&completion);

	ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(ev.type == GRPC_QUEUE_TIMEOUT);

	GPR_ASSERT(
	grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 1);
	GPR_ASSERT(res_tag == tag);
	GPR_ASSERT(ok);

	ev = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(ev.type == GRPC_QUEUE_TIMEOUT);

	shutdown_and_destroy(cc);
	}
	}

	static void test_cq_tls_cache_empty(void) {
	grpc_completion_queue* cc;
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	void* res_tag;
	int ok;

	LOG_TEST("test_cq_tls_cache_empty");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	grpc_core::ExecCtx exec_ctx; // Reset exec_ctx
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	GPR_ASSERT(
	grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 0);
	grpc_completion_queue_thread_local_cache_init(cc);
	GPR_ASSERT(
	grpc_completion_queue_thread_local_cache_flush(cc, &res_tag, &ok) == 0);
	shutdown_and_destroy(cc);
	}
	}

	static void test_shutdown_then_next_polling(void) {
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue* cc;
	grpc_completion_queue_attributes attr;
	grpc_event event;
	LOG_TEST("test_shutdown_then_next_polling");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
	grpc_completion_queue_shutdown(cc);
	event = grpc_completion_queue_next(cc, gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(event.type == GRPC_QUEUE_SHUTDOWN);
	grpc_completion_queue_destroy(cc);
	}
	}

	static void test_shutdown_then_next_with_timeout(void) {
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue* cc;
	grpc_completion_queue_attributes attr;
	grpc_event event;
	LOG_TEST("test_shutdown_then_next_with_timeout");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_NEXT;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	grpc_completion_queue_shutdown(cc);
	event = grpc_completion_queue_next(cc, gpr_inf_future(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(event.type == GRPC_QUEUE_SHUTDOWN);
	grpc_completion_queue_destroy(cc);
	}
	}

	static void test_pluck(void) {
	grpc_event ev;
	grpc_completion_queue* cc;
	void* tags[128];
	grpc_cq_completion completions[GPR_ARRAY_SIZE(tags)];
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	unsigned i, j;

	LOG_TEST("test_pluck");

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	tags[i] = create_test_tag();
	for (j = 0; j < i; j++) {
	GPR_ASSERT(tags[i] != tags[j]);
	}
	}

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_PLUCK;
	for (size_t pidx = 0; pidx < GPR_ARRAY_SIZE(polling_types); pidx++) {
	grpc_core::ExecCtx exec_ctx; // reset exec_ctx
	attr.cq_polling_type = polling_types[pidx];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
	grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
	nullptr, &completions[i]);
	}

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	ev = grpc_completion_queue_pluck(
	cc, tags[i], gpr_inf_past(GPR_CLOCK_REALTIME), nullptr);
	GPR_ASSERT(ev.tag == tags[i]);
	}

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
	grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
	nullptr, &completions[i]);
	}

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	ev = grpc_completion_queue_pluck(cc, tags[GPR_ARRAY_SIZE(tags) - i - 1],
	gpr_inf_past(GPR_CLOCK_REALTIME),
	nullptr);
	GPR_ASSERT(ev.tag == tags[GPR_ARRAY_SIZE(tags) - i - 1]);
	}

	shutdown_and_destroy(cc);
	}
	}

	static void test_pluck_after_shutdown(void) {
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_event ev;
	grpc_completion_queue* cc;
	grpc_completion_queue_attributes attr;

	LOG_TEST("test_pluck_after_shutdown");

	attr.version = 1;
	attr.cq_completion_type = GRPC_CQ_PLUCK;
	for (size_t i = 0; i < GPR_ARRAY_SIZE(polling_types); i++) {
	attr.cq_polling_type = polling_types[i];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);
	grpc_completion_queue_shutdown(cc);
	ev = grpc_completion_queue_pluck(
	cc, nullptr, gpr_inf_future(GPR_CLOCK_REALTIME), nullptr);
	GPR_ASSERT(ev.type == GRPC_QUEUE_SHUTDOWN);
	grpc_completion_queue_destroy(cc);
	}
	}

	static void test_callback(void) {
	grpc_completion_queue* cc;
	void* tags[128];
	grpc_cq_completion completions[GPR_ARRAY_SIZE(tags)];
	grpc_cq_polling_type polling_types[] = {
	GRPC_CQ_DEFAULT_POLLING, GRPC_CQ_NON_LISTENING, GRPC_CQ_NON_POLLING};
	grpc_completion_queue_attributes attr;
	unsigned i;

	LOG_TEST("test_callback");

	bool got_shutdown = false;
	class ShutdownCallback : public grpc_experimental_completion_queue_functor {
	public:
	ShutdownCallback(bool* done) : done_(done) {
	functor_run = &ShutdownCallback::Run;
	}
	~ShutdownCallback() {}
	static void Run(grpc_experimental_completion_queue_functor* cb, int ok) {
	static_cast<ShutdownCallback>(cb)->done_ = static_cast<bool>(ok);
	}

	private:
	bool* done_;
	};
	ShutdownCallback shutdown_cb(&got_shutdown);

	attr.version = 2;
	attr.cq_completion_type = GRPC_CQ_CALLBACK;
	attr.cq_shutdown_cb = &shutdown_cb;

	for (size_t pidx = 0; pidx < GPR_ARRAY_SIZE(polling_types); pidx++) {
	grpc_core::ExecCtx exec_ctx; // reset exec_ctx
	attr.cq_polling_type = polling_types[pidx];
	cc = grpc_completion_queue_create(
	grpc_completion_queue_factory_lookup(&attr), &attr, nullptr);

	int counter = 0;
	class TagCallback : public grpc_experimental_completion_queue_functor {
	public:
	TagCallback(int* counter, int tag) : counter_(counter), tag_(tag) {
	functor_run = &TagCallback::Run;
	}
	~TagCallback() {}
	static void Run(grpc_experimental_completion_queue_functor* cb, int ok) {
	GPR_ASSERT(static_cast<bool>(ok));
	auto* callback = static_cast<TagCallback*>(cb);
	*callback->counter_ += callback->tag_;
	grpc_core::Delete(callback);
	};

	private:
	int* counter_;
	int tag_;
	};

	int sumtags = 0;
	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	tags[i] = static_cast<void*>(grpc_core::New<TagCallback>(&counter, i));
	sumtags += i;
	}

	for (i = 0; i < GPR_ARRAY_SIZE(tags); i++) {
	GPR_ASSERT(grpc_cq_begin_op(cc, tags[i]));
	grpc_cq_end_op(cc, tags[i], GRPC_ERROR_NONE, do_nothing_end_completion,
	nullptr, &completions[i]);
	}

	GPR_ASSERT(sumtags == counter);

	shutdown_and_destroy(cc);

	GPR_ASSERT(got_shutdown);
	got_shutdown = false;
	}
	}

	struct thread_state {
	grpc_completion_queue* cc;
	void* tag;
	};

	int main(int argc, char** argv) {
	grpc_test_init(argc, argv);
	grpc_init();
	test_no_op();
	test_pollset_conversion();
	test_wait_empty();
	test_shutdown_then_next_polling();
	test_shutdown_then_next_with_timeout();
	test_cq_end_op();
	test_pluck();
	test_pluck_after_shutdown();
	test_cq_tls_cache_full();
	test_cq_tls_cache_empty();
	test_callback();
	grpc_shutdown();
	return 0;
	}