抛出 OutOfMemoryError “pthread_create (1040KB stack) failed: Try again"使用 Volley 进行异步帖子时 [英] Throwing OutOfMemoryError "pthread_create (1040KB stack) failed: Try again" when doing asynchronous posts using Volley

问题描述

我正在使用 Volley 将一些存储在本地数据库中的数据发布到服务器.问题是当我有大量条目(例如 500)时，我收到此错误:

I'm using Volley to POST some data stored in a local database to a server. The problem is when I have a big number of entries (for example 500) I get this error:

 java.lang.OutOfMemoryError: pthread_create (1040KB stack) failed: Try again
at java.lang.Thread.nativeCreate(Native Method)
at com.android.volley.RequestQueue.start(RequestQueue.java:141)
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66)
at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66)
at mypackageName.SomeClass.upload(SomeClass)
at mypackageName.MyClass$MyThred.run(SomeClass.java:387)

这就是我从游标中检索数据并进行发布的方式

This is how I'm retrieving data from the cursor and doing the post

    private class UploadDataThred extends Thread {

    @Override
    public void run() {
        SomeSQLiteHelper someSQLiteHelper = new SomeSQLiteHelper(context);
        someSQLiteHelper.getWritableDatabase();
        Cursor result = someSQLiteHelper.getAllEvents();
        DataUploader dataUploader = new DataUploader(context);

        while (result.moveToNext()) {
            Build.logError("We're looping!");
            while (!waitingForResponse) {
                try {
                    Thread.sleep(4000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            }
            dataUploader.upload(result.getString(0), false, result.getString(1), result.getString(2), result.getString(3), result.getString(4), result.getString(5), result.getString(6), result.getString(7), result.getString(8));

        }
        someSQLiteHelper.close();
    }
}

这是我执行 POST 的方法

and this is my method that does the POST

 public void upload(Some parameters go here) {

    waitingForResponse = true;
    VolleyLog.DEBUG = false;


    final JSONObject o = new JSONObject();
    o.put(Some data)

    RequestQueue requestQueue = Volley.newRequestQueue(context);

    JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST, HOST,  o, new Response.Listener<JSONObject>() {


        @Override
        public void onResponse(JSONObject response) {

            if (response.toString().contains("OK")) {

                if (columnID != null) {

                deleteSingleEntry(columnID);

                }


                waitingForResponse = false;


            }

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

            waitingForResponse = false;

        }
    }) {

        /**
         * Passing some request headers
         * */
        @Override
        public Map<String, String> getHeaders() throws AuthFailureError {
            HashMap<String, String> headers = new HashMap<String, String>();
            headers.put("Content-Type", "application/json; charset=utf-8");
            return headers;
        }


    };



    requestQueue.add(jsonObjReq);

}

如果我在本地数据库中有 400 个条目，然后它会抛出该 execption，它就可以正常工作.提前致谢.

It work's fine if I've got 400 entries in the local db and after that it throws that execption. Thank you in advance.

推荐答案

问题是我为每个请求创建了一个新的 RequestQueue.这就是我怀疑它抛出 OutOfMemory 异常的原因.解决方法很简单:

The problem is I was creating a new RequestQueue for every request. That's the reason I suspect it was throwing the OutOfMemory Exception. The solution is simple:

代替RequestQueue requestQueue = Volley.newRequestQueue(context);

在方法外声明RequestQueue，并且只有在前一个为空时才添加一个新的RequestQueue.

declare the RequestQueue outside the method and add a new RequestQueue only if the previous one is null.

private RequestQueue requestQueue;

public void uploadData(String s) {
if (requestQueue == null) {
        requestQueue = Volley.newRequestQueue(context);
        Build.logError("Setting a new request queue");
    } more request stuff....
}

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