zircon | Zircon Kernel , Core Drivers , and Services

by xinyu391 C++ Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | zircon Summary

zircon is a C++ library. zircon has no bugs, it has no vulnerabilities and it has low support. However zircon has a Non-SPDX License. You can download it from GitHub.

Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation. The canonical Zircon Git repository is located at: A read-only mirror of the code is present at: The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes). Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls. Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions. This page is a non-comprehensive index of the zircon documentation.

Support

Quality

Security

License

Reuse

Support

zircon has a low active ecosystem.

It has 21 star(s) with 326 fork(s). There are 5 watchers for this library.

It had no major release in the last 6 months.

zircon has no issues reported. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of zircon is current.

Quality

zircon has 0 bugs and 0 code smells.

Security

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

zircon code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

zircon has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

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

It has 565 lines of code, 46 functions and 3 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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zircon Key Features

No Key Features are available at this moment for zircon.

zircon Examples and Code Snippets

No Code Snippets are available at this moment for zircon.

Community Discussions

Trending Discussions on zircon

Understanding ARM relocation (example: str x0, [tmp, #:lo12:zbi_paddr])

Using Rvest to scrape text, table, and combine the two from multiple pages

Is there a way to extract a substring from a cell in OpenOffice Calc?

how to perform indexing in cheerio for web scraping

Substraction between two dataframe's column

QUESTION

Understanding ARM relocation (example: str x0, [tmp, #:lo12:zbi_paddr])

Asked 2020-Nov-15 at 04:09

I found this line of assembly in zircon kernel start.S

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ANSWER

Answered 2020-Nov-15 at 04:09

The underlying issue is that ARM64 instructions are all 32 bits in size, which limits the number of bits of immediate data that can be encoded in any one instruction. You certainly cannot encode 64 bits of address, or even 32 bits.

The code and static data of the kernel can be expected to be well under 4 GB, so in order to store data in the static variable zbi_paddr, the programmer can write the following two instructions (including the preceding one which you omitted but is crucial). Note that tmp is a macro defined above as x9, so the code expands to:

Source https://stackoverflow.com/questions/64838776

QUESTION

Using Rvest to scrape text, table, and combine the two from multiple pages

Asked 2020-Nov-02 at 04:24

I have a situation where i want to scrape multiple tables across different urls. I did manage to scrape one page, but my function is failing when i try to scrape across pages and stack the tables as a dataframe/list.

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ANSWER

Answered 2020-Nov-02 at 04:02

You are passing url to the function and using urls in the body of the function. Try this version :

Source https://stackoverflow.com/questions/64639578

QUESTION

Is there a way to extract a substring from a cell in OpenOffice Calc?

Asked 2020-Sep-28 at 21:19

I have tens of thousands of rows of unstructured data in csv format. I need to extract certain product attributes from a long string of text. Given a set of acceptable attributes, if there is a match, I need it to fill in the cell with the match.

Example data:
"[ROOT];Earrings;Brands;Brands>JeweleryExchange;Earrings>Gender;Earrings>Gemstone;Earrings>Metal;Earrings>Occasion;Earrings>Style;Earrings>Gender>Women's;Earrings>Gemstone>Zircon;Earrings>Metal>White Gold;Earrings>Occasion>Just to say: I Love You;Earrings>Style>Drop/Dangle;Earrings>Style>Fashion;Not Visible;Gifts;Gifts>Price>$500 - $1000;Gifts>Shop>Earrings;Gifts>Occasion;Gifts>Occasion>Christmas;Gifts>Occasion>Just to say: I Love You;Gifts>For>Her"

Look up table of values:
Zircon, Diamond, Pearl, Ruby

Output:
Zircon

I tried using the VLOOKUP() function, but it needs to match an entire cell and works better for translating acronyms. Haven't really found a built in function that accomplishes what I need. The data is totally unstructured, and changes from row to row with no consistency even within variations of the same product. Does anyone have an idea how to do this?? Or how to write an OpenOffice Calc function to accomplish this? Also open to other better methods of doing this if anyone has any experience or ideas in how to approach this...

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ANSWER

Answered 2020-Sep-28 at 21:19

ok so I figured out how to do this on my own... I created many different columns, each with a keyword I was looking to extract as a header. Spreadsheet solution for structured data extraction Then I used this formula to extract the keywords into the correct row beneath the column header. =IF(ISERROR(SEARCH(CF$1,$D769)),"",CF$1) The Search function returns a number value for the position of a search string otherwise it produces an error. I use the iserror function to determine if there is an error condition, and the if statement in such a way that if there is an error, it leaves the cell blank, else it takes the value of the header. Had over 100 columns of specific information to extract, into one final column where I join all the previous cells in the row together for the final list. Worked like a charm. Recommend this approach to anyone who has to do a similar task.

Source https://stackoverflow.com/questions/64068399

QUESTION

how to perform indexing in cheerio for web scraping

Asked 2020-Jun-23 at 23:47

i am using cheerio for web scraping, i have used bs4 earlier.

I want to scrape https://rera.kerala.gov.in/rera_project_details this website, in python to scrape table we can use findall("tr")[0] to get 1 st tr

but how to perform same in cheerio.

below is my code

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ANSWER

Answered 2020-Jun-23 at 10:57

You should be able to use a selector that will give you all the elements from the required table. Once you have the elements you can access their properties, children etc.

Source https://stackoverflow.com/questions/62529394

QUESTION

Substraction between two dataframe's column

Asked 2020-Jun-22 at 23:10

I have different dataset total product data and selling data. I need to find out the Remaining products from product data comparing selling data. So, for that, I have done some general preprocessing and make both dataframe ready to use. But can't get it how to compare them.

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ANSWER

Answered 2020-Jun-22 at 23:10

This can help by merging two dataframe:

Source https://stackoverflow.com/questions/62524730

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

Vulnerabilities

No vulnerabilities reported

Install zircon

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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