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我遇到一個奇怪的行爲開始從波科:: HttpServer的一個線程從波科:: HttpServer的啓動線程
這裏就是我已經得到了:現在
class Worker : public Poco::Runnable {
public:
Worker(std::string request): _request(request) {};
void run();
std::string GetResult();
private:
std::string _request;
};
void Worker::run() {
// do something with _request;
}
class RequestHandler : public HTTPRequestHandler {
public:
virtual void handleRequest(HTTPServerRequest &req, HTTPServerResponse &resp) {
std::string request(static_cast<stringstream const&>(stringstream() << req.stream().rdbuf()).str());
Poco::Thread thread;
Worker worker(request);
std::string response = "";
thread.start(worker);
// parsing content of the request to detect if request is async or sync
if(async) {
// make dummy response
response = "your request queued";
} else { // if sync
thread.join();
response = worker.GetResult();
}
ostream& out = resp.send();
out << response;
out.flush();
}
private:
};
,如果請求是同步的鍵入all ok,RequestHandler等待線程的連接,然後用worker的結果響應,一切正常。但是如果請求是異步類型的,我不需要等待線程連接,我只需要在工作線程繼續處理請求時發送一個虛擬響應。在幾次異步請求之後,問題是segfault。像這樣:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff2e4c700 (LWP 13986)]
0x0000000000000000 in ??()
(gdb) bt
#0 0x0000000000000000 in ??()
#1 0x00007ffff7a3f76e in Poco::ThreadImpl::runnableEntry (pThread=0x7ffff464e930) at /home/uzurik/libs/poco-PostgreSQL/Foundation/src/Thread_POSIX.cpp:436
#2 0x00007ffff66c26aa in start_thread (arg=0x7ffff2e4c700) at pthread_create.c:333
#3 0x00007ffff69dfeed in clone() at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
我做錯了什麼?