multithreading

问题 As the integers are produced the Consumer thread sums their value (1+2+3…+10=55) Producer thread generates integers from 1 to 10 The program is meant to produce an integer and consume it right away. But, the result generated at the program’s end rarely equals 55. This is because the threads don’t wait for each other to complete their tasks Need to add syncronization to the code so that the consumer thread adds a value to the total only after a producer thread has generated a new integer

问题 When I push the button the scan_open_ports start working until the line ip_list.curselection() where it stops, this line blocks the running of the function... I wanted to know why and how to fix that? Thanks def scan_open_ports(): #long runtime function print "Asdasd\" ip_list.curselection() def thr_open_ports(): threading.Thread(target=scan_open_ports).start() ip_list = Listbox() scan_ports = Button(window, text="Scan Open Ports", command= thr_open_ports, height = 10, width = 20) 回答1: I have

问题 I want to run a asynchronous event in background with flask and for that i worte a code below But When I run app.py main function is successfully run for the first time by the schedule but in second time it throwing an error. Please give me a solution main.py import asyncio import aiohttp from database import DBHelper MESSAGE_TO_SEND = 'Please Complete Your Task' ACCESS_TOKEN = Access_token db = DBHelper() async def taskReminder(memberID): data = { "recipient": { "id": memberID }, "message":

问题 I have a form ( complexForm in the code) with multiple controls which takes some time to load. So I decided to put in in a separate thread in order to decrease initial loading time. Everything works fine except the label control on the wait form ( Form1 in the code) doesn't show up initially; just a flash of a sec before Form1 went off. So my question is, why doesn't the label control show up? [STAThread] static void Main() { Thread thread = new Thread(delegate() { var wait = new Form1(); /

问题 I have a form ( complexForm in the code) with multiple controls which takes some time to load. So I decided to put in in a separate thread in order to decrease initial loading time. Everything works fine except the label control on the wait form ( Form1 in the code) doesn't show up initially; just a flash of a sec before Form1 went off. So my question is, why doesn't the label control show up? [STAThread] static void Main() { Thread thread = new Thread(delegate() { var wait = new Form1(); /

问题 I need to suspend a thread on windows via Windows SDK on msys. I tried something like std::thread thread(somefunction, someparameters); HANDLE handle=thread.native_handle(); SuspendThread(handle); But gcc told me the return value of native_handle() is 'long long unsigned int' but not void*. So I tried HANDLE handle=reinterpret_cast<HANDLE>(thread.native_handle()); But it does not work because when I called GetLastError() I received the error code 6 which means the handle is invalid. What

问题 I need to suspend a thread on windows via Windows SDK on msys. I tried something like std::thread thread(somefunction, someparameters); HANDLE handle=thread.native_handle(); SuspendThread(handle); But gcc told me the return value of native_handle() is 'long long unsigned int' but not void*. So I tried HANDLE handle=reinterpret_cast<HANDLE>(thread.native_handle()); But it does not work because when I called GetLastError() I received the error code 6 which means the handle is invalid. What

问题 I need to suspend a thread on windows via Windows SDK on msys. I tried something like std::thread thread(somefunction, someparameters); HANDLE handle=thread.native_handle(); SuspendThread(handle); But gcc told me the return value of native_handle() is 'long long unsigned int' but not void*. So I tried HANDLE handle=reinterpret_cast<HANDLE>(thread.native_handle()); But it does not work because when I called GetLastError() I received the error code 6 which means the handle is invalid. What

问题 EDITED: I have a code which looks like: __author__ = 'feynman' cimport cython @cython.boundscheck(False) @cython.wraparound(False) @cython.nonecheck(False) def MC_Surface(volume, mc_vol): Perm_area = { "00000000": 0.000000, "11111111": 0.000000, ... ... "11100010": 1.515500, "00011101": 1.515500 } cdef int j, i, k for k in range(volume.shape[2] - 1): for j in range(volume.shape[1] - 1): for i in range(volume.shape[0] - 1): pattern = '%i%i%i%i%i%i%i%i' % ( volume[i, j, k], volume[i, j + 1, k],

问题 This question already has answers here : How can I pass a reference to a stack variable to a thread? (1 answer) Thread references require static lifetime? (1 answer) How do I use static lifetimes with threads? (2 answers) How can I send non-static data to a thread in Rust and is it needed in this example? (1 answer) Closed 1 year ago . Here's a toy example of my problem: use std::sync::{Arc, Mutex}; fn operate_in_chunks(vec: &mut Vec<f32>) { let chunk_size = 10; let mutex_vec: Arc<Mutex<&mut