本文整理汇总了C++中concurrent_queue::deQ方法的典型用法代码示例。如果您正苦于以下问题：C++ concurrent_queue::deQ方法的具体用法？C++ concurrent_queue::deQ怎么用？C++ concurrent_queue::deQ使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类concurrent_queue的用法示例。
在下文中一共展示了concurrent_queue::deQ方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: worker
void* worker(void* d) {
shared_ptr<UploadBuffer> pdata;
srand(time(NULL));
// get data from fq
while (1) {
fq.deQ(pdata);
if (pdata->index == 0) {
// inited data??
cout << "inited data" << std::endl;
}
if (pdata->index == -1) { // finished
// cout<<"finished"<<std::endl;
break;
}
MD5Calc m;
m.Update(pdata->data.getdata(), pdata->data.len());
cout << pdata->index << "\t" << m.Get() << std::endl;
// sleep(rand()%5);
// reset pdata
pdata->data.reset();
pdata->index = 0;
// re queue to empty queue
eq.enQ(pdata);
}
// cout<<"quit...\n";
}示例2: while
void *worker(void *a) {
int r;
while (1) {
q.deQ(r);
if (r == -1) break;
}
return NULL;
}示例3: main
int main(int argc, char* argv[]) {
vector<pthread_t> threads;
shared_ptr<UploadBuffer> curdata;
if (argc < 2) {
printf("not enough args\n");
return 1;
}
int fd = open(argv[1], O_RDONLY);
if (fd == -1) {
perror("open file fail");
return 1;
}
char* localbuf = (char*)malloc(READLEN);
int readlen = READLEN;
for (int tnum = 0; tnum < NUMTHREADS; tnum++) threads.emplace_back();
for (int tnum = 0; tnum < NUMTHREADS; tnum++) {
eq.enQ(make_shared<UploadBuffer>(CHUCKSIZE));
}
for (int tnum = 0; tnum < NUMTHREADS; tnum++) {
pthread_create(&threads[tnum], NULL, worker, NULL);
}
eq.deQ(curdata);
// assert (curdata->index == 0)
int count = 1;
curdata->index = count++;
int tmplen;
while (1) {
// read data from file
readlen = read(fd, localbuf, READLEN);
if (readlen == -1) {
perror("read fail");
break;
} else if (readlen == 0) { // EOF
// cout<<"end of file\n";
if (curdata->index > 0) fq.enQ(curdata);
break;
}
//
while (1) {
tmplen = curdata->data.append(localbuf, readlen);
if (tmplen < readlen) { // change to next queue, enqueue
fq.enQ(curdata);
eq.deQ(curdata);
curdata->index = count++;
// assert (curdata->index == 0)
readlen -= tmplen;
} else {
break; // contineu to read
}
}
}
printf("Start teardown\n");
// terminate thread
for (int tnum = 0; tnum < NUMTHREADS; tnum++) {
eq.deQ(curdata);
curdata->index = -1;
fq.enQ(curdata);
}
curdata.reset();
for (int tnum = 0; tnum < NUMTHREADS; tnum++) {
pthread_join(threads[tnum], NULL);
}
free(localbuf);
close(fd);
return 0;
}