The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) https://grpc.io/
 
 
 
 
 
 

188 lines
4.8 KiB

/*
*
* Copyright 2016 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/gprpp/mpscq.h"
#include <inttypes.h>
#include <stdlib.h>
#include <gtest/gtest.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/gprpp/thd.h"
#include "test/core/util/test_config.h"
using grpc_core::MultiProducerSingleConsumerQueue;
typedef struct test_node {
MultiProducerSingleConsumerQueue::Node node;
size_t i;
size_t* ctr;
} test_node;
static test_node* new_node(size_t i, size_t* ctr) {
test_node* n = new test_node();
n->i = i;
n->ctr = ctr;
return n;
}
TEST(MpscqTest, Serial) {
gpr_log(GPR_DEBUG, "test_serial");
MultiProducerSingleConsumerQueue q;
for (size_t i = 0; i < 10000000; i++) {
q.Push(&new_node(i, nullptr)->node);
}
for (size_t i = 0; i < 10000000; i++) {
test_node* n = reinterpret_cast<test_node*>(q.Pop());
ASSERT_NE(n, nullptr);
ASSERT_EQ(n->i, i);
delete n;
}
}
typedef struct {
size_t ctr;
MultiProducerSingleConsumerQueue* q;
gpr_event* start;
} thd_args;
#define THREAD_ITERATIONS 10000
static void test_thread(void* args) {
thd_args* a = static_cast<thd_args*>(args);
gpr_event_wait(a->start, gpr_inf_future(GPR_CLOCK_REALTIME));
for (size_t i = 1; i <= THREAD_ITERATIONS; i++) {
a->q->Push(&new_node(i, &a->ctr)->node);
}
}
TEST(MpscqTest, Mt) {
gpr_log(GPR_DEBUG, "test_mt");
gpr_event start;
gpr_event_init(&start);
grpc_core::Thread thds[100];
thd_args ta[GPR_ARRAY_SIZE(thds)];
MultiProducerSingleConsumerQueue q;
for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) {
ta[i].ctr = 0;
ta[i].q = &q;
ta[i].start = &start;
thds[i] = grpc_core::Thread("grpc_mt_test", test_thread, &ta[i]);
thds[i].Start();
}
size_t num_done = 0;
size_t spins = 0;
gpr_event_set(&start, reinterpret_cast<void*>(1));
while (num_done != GPR_ARRAY_SIZE(thds)) {
MultiProducerSingleConsumerQueue::Node* n;
while ((n = q.Pop()) == nullptr) {
spins++;
}
test_node* tn = reinterpret_cast<test_node*>(n);
ASSERT_EQ(*tn->ctr, tn->i - 1);
*tn->ctr = tn->i;
if (tn->i == THREAD_ITERATIONS) num_done++;
delete tn;
}
gpr_log(GPR_DEBUG, "spins: %" PRIdPTR, spins);
for (auto& th : thds) {
th.Join();
}
}
typedef struct {
thd_args* ta;
size_t num_thds;
gpr_mu mu;
size_t num_done;
size_t spins;
MultiProducerSingleConsumerQueue* q;
gpr_event* start;
} pull_args;
static void pull_thread(void* arg) {
pull_args* pa = static_cast<pull_args*>(arg);
gpr_event_wait(pa->start, gpr_inf_future(GPR_CLOCK_REALTIME));
for (;;) {
gpr_mu_lock(&pa->mu);
if (pa->num_done == pa->num_thds) {
gpr_mu_unlock(&pa->mu);
return;
}
MultiProducerSingleConsumerQueue::Node* n;
while ((n = pa->q->Pop()) == nullptr) {
pa->spins++;
}
test_node* tn = reinterpret_cast<test_node*>(n);
ASSERT_EQ(*tn->ctr, tn->i - 1);
*tn->ctr = tn->i;
if (tn->i == THREAD_ITERATIONS) pa->num_done++;
delete tn;
gpr_mu_unlock(&pa->mu);
}
}
TEST(MpscqTest, MtMultipop) {
gpr_log(GPR_DEBUG, "test_mt_multipop");
gpr_event start;
gpr_event_init(&start);
grpc_core::Thread thds[50];
grpc_core::Thread pull_thds[50];
thd_args ta[GPR_ARRAY_SIZE(thds)];
MultiProducerSingleConsumerQueue q;
for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) {
ta[i].ctr = 0;
ta[i].q = &q;
ta[i].start = &start;
thds[i] = grpc_core::Thread("grpc_multipop_test", test_thread, &ta[i]);
thds[i].Start();
}
pull_args pa;
pa.ta = ta;
pa.num_thds = GPR_ARRAY_SIZE(thds);
pa.spins = 0;
pa.num_done = 0;
pa.q = &q;
pa.start = &start;
gpr_mu_init(&pa.mu);
for (size_t i = 0; i < GPR_ARRAY_SIZE(pull_thds); i++) {
pull_thds[i] = grpc_core::Thread("grpc_multipop_pull", pull_thread, &pa);
pull_thds[i].Start();
}
gpr_event_set(&start, reinterpret_cast<void*>(1));
for (auto& pth : pull_thds) {
pth.Join();
}
gpr_log(GPR_DEBUG, "spins: %" PRIdPTR, pa.spins);
for (auto& th : thds) {
th.Join();
}
gpr_mu_destroy(&pa.mu);
}
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}