mcache | 一个高性能本地内存缓存 , 带有各种内存淘汰算法
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kandi X-RAY | mcache Summary
一个高性能本地内存缓存,带有各种内存淘汰算法.
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QUESTION
I'm using the Android 11 DP2 on a Pixel 4 XL, and since then, I get this leak a lot. I suspect that it's caused by the developer preview, but I'm not entirely sure.
I tried to search for this leak online, but I didn't find anything related.
What do you think?
...ANSWER
Answered 2020-Mar-26 at 15:28Yes, this is very likely to be an Android leak. No idea if it's new, but I haven't seen it before. Do you do anything special with auto fill?
You should report it on the Android bug tracker, ideally with a sample project to reproduce it. If you can't reproduce easily, at least providing a link to a heap dump would help investigating.
Based on the names involved in the leaktrace, if ApplicationPackageManager has an application scope (and therefore is not leaking) then ContextImpl.mAutofillClient is holding on to an activity reference for too long.
The field is defined here: https://android.googlesource.com/platform/frameworks/base/+blame/master/core/java/android/app/ContextImpl.java#235
I haven't found any recent changes in autofill that would explain this leak. We can see in the source code of Activity that when an activity gets its base context attached, it sets itself as the autofill client for that base context: https://android.googlesource.com/platform/frameworks/base/+blame/master/core/java/android/app/Activity.java#1124
It never unsets itself, so either that's the mistake, or the base context is expected to have the same scope as the activity.
Another thing that I find weird though is static ApplicationPackageManager.mHasSystemFeatureCache
which means that ApplicationPackageManager has a static fields that starts with m (member field). That's a weird name, usually a mistake that doesn't happen in the android sources. And indeed I can't find it: https://android.googlesource.com/platform/frameworks/base/+blame/master/core/java/android/app/ApplicationPackageManager.java but maybe they haven't shared the updated sources yet? What device are you using this on?
QUESTION
I'm in the process of creating a web application in Go using Beego (https://beego.me).
I have a requirement to capture application monitoring and metering metrics in Newrelic and to be able to view all transactions in Newrelic.
I have followed this documentation and am using Beego GoRelic to initialise the Newrelic agent in my code.
Here is my router.go class -
...ANSWER
Answered 2020-Jan-09 at 17:44Im answering my own question as I believe Ive found a way and it might help someone else too - apparently it was just a matter of looking harder for existing plugins. I found that this plugin : https://github.com/sergeylanzman/newrelic_beego does exactly what I needed.
If we observe the code, it the author has created 3 methods -
- StartTransaction
- NameTransaction
- EndTransaction
and is inserting these as filters in the Beego environment. Under the hood the author has used the official Newrelic Go Agent (https://github.com/newrelic/go-agent) and is using Transactions to report APM data.
Here is the sample code from the plugin which registers the 3 filters -
QUESTION
While running maven image through packer for building purpose I am getting bellow error .
...
ANSWER
Answered 2019-Dec-25 at 09:45As the error message says:
error running hook: exit status 2, stdout: , stderr: fatal error: runtime: out of memory
QUESTION
I made a template class Block and wanted to cache some data for each instance type of Block. For this reason I created an inner class Cache which is storing and initialising the data often used by Block class instances. But the compiler (Visual Studio 2017, C++17) is not accepting the static member variable definition and the error message is not helping me. Whats wrong with my code and how I can accomplish my goal?
Errors:
Error C2061 syntax error: identifier 'Cache'
Warnings:
Warning C4346 'Cache': dependent name is not a type
ANSWER
Answered 2019-May-19 at 12:59add typename
QUESTION
I'm getting Golang errors in my OSX terminal when I press enter multiple times. There's a known issue with OSX Sierra and Golang version 1.4.2. I don't have Golang version 1.4.2 but the stacktrace is referring to that so my assumption is that there is an application somewhere using the old version.
Is there a way I can enable verbose logging or find out the util/daemon that is causing the error? The stacktrace is below:
...ANSWER
Answered 2019-May-13 at 02:13(Moving my comment as an answer to mark this question as resolved).
Ended up fixing it. Manually went through my utilities and isolated direnv (github.com/direnv/direnv) as the problematic utility. I must have compiled it using old Go version.
QUESTION
In a microservice running gin-gonic, I'm trying to collect metrics in a router and expose them on a second one, but it seems this is not possible. Does anyone have experience in it?
All the documentation I found set the prometheus handler into the same application router.
Expected result
See promhttp_metric_handler_requests_total{code="200"}
increasing for each visit of the :8000/test
route
Actual result
promhttp_metric_handler_requests_total{code="200"}
increase only for each visit of the :7100/metrics
route
Example code
(following is a full application that can explain the issue)
...ANSWER
Answered 2019-Feb-14 at 11:38Prometheus uses promhttp_metric_XXXXX
for data it gathers data about itself, here:
As you can gather from http://localhost:9090/metrics, one metric that Prometheus exports about itself is called promhttp_metric_handler_requests_total (the total number of /metrics requests the Prometheus server has served).
What you are looking for is called gin_requests_total
, example of 10
requests:
QUESTION
I see some code snippet like below:
...ANSWER
Answered 2018-Sep-01 at 03:44Given std::unique_ptr mCache;
, when mCache
is destroyed its deleter will use delete
to destroy the pointer being managed (if any), i.e. to deallocate memory for a single object. But after mCache.reset(new uint8_t[size]);
what mCache
manages is a pointer to array, that means it should use delete[]
instead; using delete
to deallocate memory for an array leads to UB.
The code could be changed to
QUESTION
I did have haproxy balancing HTTP and HTTPS traffic from Internet to WEB service. I want to monitoring this service via Prometheus. On GitHub did find application enter link description here HAProxy Exporter for Prometheus
Did collect integration and did get result:
...ANSWER
Answered 2018-Jul-10 at 09:09Among your output:
QUESTION
I have a text file which gives me the metrics of the etcd cluster. The file is like this (only a portion):
...ANSWER
Answered 2018-Jul-06 at 11:53If your pattern never changes:
QUESTION
I've made a simple application with a recyclerview in a fragment. In OnCreateView
I get a list from SharedPreferences (from a separate class), then I save it into a private list like this:
ANSWER
Answered 2017-Sep-29 at 12:26to listen to newly added items use registerOnSharedPreferenceChangeListener it will keep called when items added
use it on onCreateView
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