spawning

How to apply clustering/spawing child process techniques for Node.js application having bouth IO bound and CPU bound tasks?

由 三世轮回 提交于 2019-12-25 07:15:13
问题 I'm working on a IOT project where the Node.js application perform following tasks: 1. Reading stream of messages using asynchronous messaging library (IO bound) 2. Sending the messages to web service where machine learning happens based on the messages that were sent by Node.js application (IO bound as only API call is involved) 3. Receive the pattern generated as a result of machine learning from web service (using REST API) 4. Compare the pattern against the real-time streaming messages

SKAction repeatActionForever not spawning entity

由 会有一股神秘感。 提交于 2019-12-11 12:50:13
问题 Basically I have a spawn entity function that should in theory, spawn a random balloon onto the screen with certain properties. I have designed the method as such: -(void)spawnBalloon { int a = arc4random_uniform(self.frame.size.width); int b = self.frame.size.height - 50; CGPoint loc = CGPointMake(a, b); [self spawnBalloonAtPoint:loc]; } And this method works. When I call it in the init function, it works. When I call it in the touchesMoved() function it works. However, when I try and call

Python: How to determine subprocess children have all finished running

由 戏子无情 提交于 2019-12-09 06:20:28
问题 I am trying to detect when an installation program finishes executing from within a Python script. Specifically, the application is the Oracle 10gR2 Database. Currently I am using the subprocess module with Popen. Ideally, I would simply use the wait() method to wait for the installation to finish executing, however, the documented command actually spawns child processes to handle the actual installation. Here is some sample code of the failing code: import subprocess OUI_DATABASE_10GR2

Thread Pool vs Many Individual Threads

由 人走茶凉 提交于 2019-12-05 23:15:01
问题 I'm in the middle of a problem where I am unable decide which solution to take. The problem is a bit unique. Lets put it this way, i am receiving data from the network continuously (2 to 4 times per second). Now each data belongs to a different, lets say, group. Now, lets call these groups, group1, group2 and so on. Each group has a dedicated job queue where data from the network is filtered and added to its corresponding group for processing. At first I created a dedicated thread per group

Thread Pool vs Many Individual Threads

由 隐身守侯 提交于 2019-12-04 03:59:53
I'm in the middle of a problem where I am unable decide which solution to take. The problem is a bit unique. Lets put it this way, i am receiving data from the network continuously (2 to 4 times per second). Now each data belongs to a different, lets say, group. Now, lets call these groups, group1, group2 and so on. Each group has a dedicated job queue where data from the network is filtered and added to its corresponding group for processing. At first I created a dedicated thread per group which would take data from the job queue, process it and then goes to blocking state (using Linked

How to spawn a process and capture its STDOUT in .NET? [duplicate]

由 流过昼夜 提交于 2019-11-25 22:49:42
问题 This question already has answers here : Capturing console output from a .NET application (C#) (7 answers) Closed 3 years ago . I need to spawn a child process that is a console application, and capture its output. I wrote up the following code for a method: string retMessage = String.Empty; ProcessStartInfo startInfo = new ProcessStartInfo(); Process p = new Process(); startInfo.CreateNoWindow = true; startInfo.RedirectStandardOutput = true; startInfo.RedirectStandardInput = true; startInfo
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