FreeStep | Open source , encrypted , responsive chat | Chat library
kandi X-RAY | FreeStep Summary
kandi X-RAY | FreeStep Summary
Open source, fully encrypted chat goodness. Built as an open source clone of ChatStep, with node.js/socket.io/Bootstrap.
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QUESTION
I'm doing some tests with 'malloc_stats' function and I've seen a strange behavior that I don't understand. The test is very easy, what I'm doing is allocate memory and print the 'malloc_stats' before the allocation, after the allocation and after free the memory. This is the code I'm using:
...ANSWER
Answered 2018-Nov-22 at 22:01This discrepancy in the number of bytes is related to paging used by the operating systems, and is not a memory leak. When you allocate block sizes that are not multiple of the page size, some of the extra memory allocated are not freed. This extra memory can later be used by the allocator, and is not leaked.
Long AnswerIf we check the manual page of the malloc_stats
function [1], we see that the total number of bytes consumed by in-use allocations is obtained by the uordblks
field of the mallinfo struct [2] whose documentation says that uordblks
is the number of total allocated bytes. Here, allocated does not necessarily mean that all of this memory is used by you as the application programmer. Allocator may allocate more memory than was requested for alignment purposes if it leads to higher performance and efficiency.
This is the issue described in your question. You run your program as
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Install FreeStep
Clone the repository (git clone git@github.com:jkingsman/FreeStep.git)
Install dependencies (npm install)
Start the server (node server.js)
View in browser http://localhost:3000
Change port and host to your own port and IP in server.js:.
Change port and host to your own port and IP in server.js: app.set('port', process.env.OPENSHIFT_NODEJS_PORT || 80); app.set('ipaddr', process.env.OPENSHIFT_NODEJS_IP || "168.235.152.38");
Change port and host to your own port and IP in public/js/client.js: var socket = io.connect("168.235.152.38:80");
If desired, change the customMode, appName, and appByline variables in client.js to have a custom name, byline, and home page.
Install node and bower dependencies with npm install. Note that this should not be run with admin credentials, as the post-install bower install will cause problems/error out when attempted as root.
For development, I highly recommend supervisor (npm install supervisor) - it watches files for changes and restarts your server when they occur. When combined with the debug variable in client.js, this is powerful way to have the app restarted and be dropped into a room whenever you change a file. My customary command for development was:.
Install the app (npm install)
Run the app (sudo npm start) (sudo required due to the low port number)
Access in your browser at your host's address (or whatever your host is)
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