sems | Virtualbox VirtualMachine Cuckoo Anubis | Security library

by AlicanAkyol C++ Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | sems Summary

sems is a C++ library typically used in Security applications. sems has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Virtualbox, VirtualMachine, Cuckoo, Anubis, ThreatExpert, Sandboxie, QEMU, Analysis Tools Detection Tools

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Support

sems has a low active ecosystem.

It has 382 star(s) with 121 fork(s). There are 40 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 0 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of sems is current.

Quality

sems has no bugs reported.

Security

sems has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

sems does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

sems releases are not available. You will need to build from source code and install.

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sems Key Features

No Key Features are available at this moment for sems.

sems Examples and Code Snippets

No Code Snippets are available at this moment for sems.

Community Discussions

Trending Discussions on sems

is it possible to have an array of semaphores?

Selecting the last day price by using LAG() function

Calculate gap between two datasets (pandas, matplotlib, fill_between already used)

Opening a semaphore return 0

Ionic timepicker limit results

Recursive functions Js

How to increase the maximum semaphore limit on MacOS/BSD

is it possible to do tab completion in elm repl?

Mongo: filter after projection

Cant insert Values in table on Android App(SQLite)

QUESTION

is it possible to have an array of semaphores?

Asked 2021-Mar-17 at 01:53

I am working on the dining philosophers problem, and I am attempting to create a way to keep track of the shared recourse (the forks). So my thinking is to create an array of semaphores, and that way when i have to fork off i can keep track of the philosophers number and his fork for eating by utilizing the index in the array which would ideally contain the recourse.

So my question is, is this possible? Everything i have attempted has resulted in an error such as:

...

ANSWER

Answered 2021-Mar-17 at 01:53

Yes, is possible, cf Arrays of semaphore and mutual assignment in C

There are two types of semaphores in linux : SystemV and POSIX semaphores (https://www.tutorialspoint.com/inter_process_communication/inter_process_communication_system_v_posix.htm)

SystemV (sem.h)

Kernel-inbuilt semaphore arrays exist in distros that use SysVinit as init system (SystemV), see https://serverfault.com/questions/312982/what-are-the-semaphore-arrays-on-linux

There is an older semaphore library from SystemV (sem.h) in that a function GETALL exists that writes all semaphores to an array

semctl(semid, 2, GETALL, outarray); in How semaphore operations are done for parent & child processes?

POSIX (semaphores.h)

Semaphores are maintained in the kernel (Ring 0), they are stored in /dev filesystem, see https://man7.org/linux/man-pages/man7/sem_overview.7.html and https://unix.stackexchange.com/questions/275650/where-is-a-named-semaphore-stored

You can get an overview over all semaphores using sem_overview() (named semaphores) and shm_overview() (unnamed semaphores)

Source https://stackoverflow.com/questions/66665534

QUESTION

Selecting the last day price by using LAG() function

Asked 2021-Jan-27 at 10:33

I have a user transaction table which is having a userid, date, itemid, price and prev_day_price column. Sample is:

userid date itemid price prev_day_price 1 2020-12-26 archicad 1400.0 1 2020-12-26 archicad 1400.0 1 2020-12-24 archicad 1200.0 1 2020-12-23 archicad 1240.0 1 2020-12-23 archicad 1240.0 1 2020-12-21 archicad 1100.0

I need to find the previous (last) day price for each item. I'd like to apply the lag function but also a group by so I can find the previous price by userid and itemid. As my table some days having a more than one rows\price by item and it doesnt goes on 24-12-2020 - 25-12-2020 - 26-12-2020.

userid date itemid price prev_day_price 1 2020-12-26 archicad 1400.0 1 2020-12-26 archicad 1400.0

Now, its starts to confusing and melting my mind to using lag function. Before the update prev_day_price column i'd tried to see preview results by lag function:

...

ANSWER

Answered 2021-Jan-27 at 10:33

Why doesn't your solution work properly?

lag(), as well as every other window function, work on the window you are defining. In your case you define a partitioned window, a group, so to speak. The lag() function is executed only within this group, not over the groups. So, it returns the previous values within the partition. E.g. for the 2020-12-26 it return NULL for the first record (as there is no previous record before the first one) and the value for the first record in the second one. But this happens separately within every date group. This explains your result.

Solution for Postgres 11+ :

demo:db<>fiddle

Source https://stackoverflow.com/questions/65916540

QUESTION

Calculate gap between two datasets (pandas, matplotlib, fill_between already used)

Asked 2020-Dec-07 at 14:23

I'd like to ask for suggestions how to calculate lenght of gap between two datasets in matplotlib made of pandas dataframe. Ideally, I would like to have these gap values written in the plot and also, if it is possible, include them into the dataframe. Here is my simplified example of dataframe:

...

ANSWER

Answered 2020-Dec-07 at 14:23

IIUC, do you want something like this:

Source https://stackoverflow.com/questions/65182638

QUESTION

Opening a semaphore return 0

Asked 2020-Oct-17 at 19:46

char* cath="/cath";
char* cathFlag="/cathf";
char* hyp="/hyp";
char* hypFlag="/hypf";

printf("SEMS OPEN\n");
sem_t *csem = sem_open(cath, O_CREAT, 0777, 0);
printf("CSEM: %d\n", *csem);
perror("ERROR: ");
sem_t *cfsem = sem_open(cathFlag, O_CREAT, 0777, 0);
sem_t *hsem = sem_open(hyp, O_CREAT, 0777, 0);
sem_t *hfsem = sem_open(hypFlag, O_CREAT, 0777, 0); 
printf("SEMS OPENED\n");

...

ANSWER

Answered 2020-Oct-17 at 13:37

Here is what I tried and it works :

Source https://stackoverflow.com/questions/64402359

QUESTION

Ionic timepicker limit results

Asked 2020-Oct-05 at 08:21

I am using ionic datetime and all I want from it is to get hours,minutes,seconds but I get result such as this 2020-10-05T00:00:27.634+07:00 what I need from this result is only 00:00:27.

My question is how to limit the result to my preferred version?

Code ...

ANSWER

Answered 2020-Oct-05 at 08:21

Solved

Here is my final code that solved my problem

Source https://stackoverflow.com/questions/64202869

QUESTION

Recursive functions Js

Asked 2020-Oct-05 at 03:58

I have numbers array, through my_number function I create a random numer, if it already exist in the array, I call the function again and create a new random number, if it is not in the array I send it to it through push.

Unfortunately it sems to send all numbers again and again until browser crashes.

How could I fix this.

Thanks for your help

...

ANSWER

Answered 2020-Oct-05 at 03:14

I'm not really sure what you are exactly trying to do, but I messed with your code. Try this code out and see if its your expected output. (This is probably wrong tbh. Sorry.)

Source https://stackoverflow.com/questions/64201908

QUESTION

How to increase the maximum semaphore limit on MacOS/BSD

Asked 2020-Oct-02 at 09:24

I want to increase the maximum number of semaphores that can be opened at the same time.

I know that the current limit can be retrieved via

...

ANSWER

Answered 2020-Oct-02 at 09:24

The following variables are editable via /usr/sbin/sysctl (available for your current session), or you can create a plist to always set the values on reboot. You must create the file.

Source https://stackoverflow.com/questions/64158180

QUESTION

is it possible to do tab completion in elm repl?

Asked 2020-Sep-15 at 03:31

I am currently starting to use elm for web development. Using the repl it sems that there is no tab completion for common built functions, except for user defined. Is this really the case or am I missing something here? for example, in the example below I have to type everything, tabbing String. doesn't give any completion suggestions

...

ANSWER

Answered 2020-Sep-15 at 03:31

You are correct. The current elm repl does NOT support tab completion.

Source https://stackoverflow.com/questions/63874761

QUESTION

Mongo: filter after projection

Asked 2020-Jun-02 at 22:33

I'm working with pymongo. One of my fields is: published_date which is a string formated as 2020/03/10 07:20:09

I'm able to convert this value to a datetime using the following aggregate:

...

ANSWER

Answered 2020-Jun-02 at 22:33

Forget $filter. It serves different purpose. You want an extra $match stage in the pipeline to filter out documents produced by the $project stage:

Source https://stackoverflow.com/questions/62154463

QUESTION

Cant insert Values in table on Android App(SQLite)

Asked 2020-Apr-26 at 14:54

I am facing a very strange issue and i really can't see what causes it. So i am trying to insert values in a table. Let me first tell you that the table exist(i have checked it Db Browser for SQLite). The issue made me to hardcode the insert query, but nothing changed. For saving space, i will paste only the necessary blocks of code. So let me show you blocks of the code. Inside my DB helper class

...

ANSWER

Answered 2020-Apr-26 at 14:53

In a valid insert statement all the string literals must be enclosed inside single quotes.
So your statement with the hardcoded values should be:

Source https://stackoverflow.com/questions/61442328

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install sems

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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