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70 lines
1.9 KiB
70 lines
1.9 KiB
/*
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* Copyright 2012 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <time.h>
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#include <pthread.h>
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#include <iostream>
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#include "ringbuffer.h"
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#define kNumIter 100000
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#define kBufSize 256
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using namespace ::std;
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void *consumer_thread(void *arg) {
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RingBuffer *rb = (RingBuffer *)arg;
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uint8_t buf[kBufSize];
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for (int i = 0; i < kNumIter; ++i) {
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int bytes_available = rb->BytesAvailable();
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// cout << "bytes_available = " << bytes_available << endl;
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while (bytes_available < kBufSize) {
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struct timespec sleepTime;
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sleepTime.tv_sec = 0;
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sleepTime.tv_nsec = 1000000;
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nanosleep(&sleepTime, NULL);
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bytes_available = rb->BytesAvailable();
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}
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// cout << "reading..." << endl;
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rb->Read(kBufSize, buf);
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for (int j = 0; j < kBufSize; ++j) {
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int expected = (i + j) & 0xff;
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if (buf[j] != expected) {
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cout << "error at " << i << ", " << j << " expected " << expected <<
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" got " << buf[j] << endl;
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}
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}
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}
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return NULL;
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}
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void test_ringbuffer() {
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RingBuffer rb;
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uint8_t buf[kBufSize];
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pthread_t thread;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_create(&thread, &attr, consumer_thread, (void *)&rb);
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for (int i = 0; i < kNumIter; ++i) {
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for (int j = 0; j < kBufSize; ++j) {
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buf[j] = i + j;
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}
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// cout << "writing..." << rb.BytesAvailable() << endl;
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rb.Write(buf, kBufSize);
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}
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pthread_join(thread, NULL);
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}
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