bcc | BCC - Tools for BPF-based Linux IO analysis networking | Monitoring library

 by   iovisor C Version: v0.27.0 License: Apache-2.0

kandi X-RAY | bcc Summary

kandi X-RAY | bcc Summary

bcc is a C library typically used in Performance Management, Monitoring applications. bcc has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

BCC is a toolkit for creating efficient kernel tracing and manipulation programs, and includes several useful tools and examples. It makes use of extended BPF (Berkeley Packet Filters), formally known as eBPF, a new feature that was first added to Linux 3.15. Much of what BCC uses requires Linux 4.1 and above.

            kandi-support Support

              bcc has a medium active ecosystem.
              It has 17445 star(s) with 3488 fork(s). There are 556 watchers for this library.
              There were 2 major release(s) in the last 12 months.
              There are 742 open issues and 981 have been closed. On average issues are closed in 75 days. There are 122 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of bcc is v0.27.0

            kandi-Quality Quality

              bcc has 0 bugs and 0 code smells.

            kandi-Security Security

              bcc has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              bcc code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              bcc is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              bcc releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of bcc
            Get all kandi verified functions for this library.

            bcc Key Features

            No Key Features are available at this moment for bcc.

            bcc Examples and Code Snippets

            Return bcc flags .
            pythondot img1Lines of Code : 13dot img1License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def get_bazel_gcc_flags(self):
                ICELAKE_ARCH_OLD = "skylake-avx512"
                ICELAKE_ARCH_NEW = "icelake-client"
                AVX512_FLAGS = ["avx512f", "avx512cd"]
                if IntelPlatform.use_old_arch_names(self, 8, 4):
                  ret_val = self.BAZEL_PREFIX_ + self.A  

            Community Discussions


            How to display all selected Checkboxes in PHPmailer
            Asked 2022-Apr-01 at 20:30

            I was tying to create a checkbox and get all checkboxes that were selected and ues phpmailer to email them to my email. Apparently i can get only 1 value selected from checkboxes out of all selected ones. Sorry if i make ur brain suicide from these indents xd This is my html file :



            Answered 2022-Apr-01 at 20:30

            You need to use array syntax in your checkboxes' name attributes on the form:

            Source https://stackoverflow.com/questions/71711735


            Update email bcc recipient in email backend
            Asked 2022-Apr-01 at 04:13

            I am building a mail backend that should add a specific address to the bcc of an email.



            Answered 2022-Apr-01 at 04:13

            This is documented behaviour as far as tests are concerned:

            Django’s test runner automatically redirects all Django-sent email to a dummy outbox. This lets you test every aspect of sending email – from the number of messages sent to the contents of each message – without actually sending the messages.

            The test runner accomplishes this by transparently replacing the normal email backend with a testing backend.

            So, your custom backend is never used in your test, which is why it fails. I think the simplest way to address this is to write your test differently, to directly call the send_messages() method on your class, e.g.:

            Source https://stackoverflow.com/questions/71696791


            What is the difference between syscalls openat and sys_enter_openat?
            Asked 2022-Mar-30 at 09:05

            I see for python BCC implementation the syscall __x64_sys_openat is used to attach a kprobe, however in libbpf implementation a kprobe is attached to sys_enter_openat. It seems both capture openat() syscall, I tested it with cat file.txt.

            What is the difference between them? And which one is more reliable to use?



            Answered 2022-Mar-30 at 09:05

            __x64_sys_openat is the name of some function in the Linux kernel, to which BCC attaches a kprobe.

            sys_enter_openat is the name of a tracepoint in Linux, meaning that this is a (more or less) stable interface to which you can hook for tracing, including with an eBPF program. You can see the available tracepoints on your system by listing the entries under /sys/kernel/debug/tracing/events/. I think BCC also has a utility called tplist to help with it.

            When given the choice, I would recommend hooking at tracepoints if possible, because they tend to be more stable than kernel internals: The parameters for __x64_sys_openat, or the name of that function, could change between different kernel versions for example; or the name would change on an other architecture, et cætera. However, the tracepoint is unlikely to change. Note that the instability of kernel's internals is somewhat mitigated for eBPF with CO-RE.

            Then it is not always possible to hook to a tracepoint: You can only use one of the existing tracepoints from the kernel. If you want to hook to another random function where no tracepoint is present (and assuming this function was not inlined at compilation time - check this by looking for it in /proc/kallsyms), then you want to use a kprobe.

            Sometimes you also need to pay extra attention to where you hook. For example, for security use cases (i.e. blocking a syscall), syscall tracepoints (or the corresponding kernel functions, obviously) are not always the best hooking points because they might leave you open to TOCTOU attacks. LSM hooks could be a good solution for that use case.

            Source https://stackoverflow.com/questions/71668868


            nodemailer: Connection closed unexpectedly
            Asked 2022-Mar-28 at 20:56

            I deployed a function to firebase and when I test the function to send an email I get the following error:



            Answered 2022-Mar-28 at 20:56

            I've solved this by creating a new transporter and I've added it inside the function:

            Source https://stackoverflow.com/questions/71652688


            Laravel 9 SymfonyMailer error - An email must have a "To", "Cc", or "Bcc" header
            Asked 2022-Mar-18 at 17:16

            I've got problems with sending emails after updating a Laravel 8 project using the Metronic 8 theme to Laravel 9. I didn't change any of my code related to emails, but now I got this error using the Sendmail driver :

            An email must have a "To", "Cc", or "Bcc" header. {"userId":6,"exception":"[object] (Symfony\Component\Mime\Exception\LogicException(code: 0): An email must have a "To", "Cc", or "Bcc" header. at /home/myhome/public_html/myproject.com/vendor/symfony/mime/Message.php:128)




            Answered 2022-Feb-17 at 11:25


            Image in HTML Body, need to change the .Range(0, 0) to the bottom of the email
            Asked 2022-Mar-13 at 19:52

            I'm using an Excel file to create an Outlook email with all our contacts in a distribution list within the Excel file. There's also a single image within a worksheet, all by itself. Email creation is fine, HTML body is also fine but might need some tweaking but that can be done afterward. Only inconvenience, the image (objshape) that is located in Worksheet1 is pasted at Range (0, 0) which ends up at the very beginning of my email but I want it at the very bottom instead, after the main HTML body. What needs to be changed in order to accomplish this?

            thank you!

            Here's my simple VBA coding I have so far:



            Answered 2022-Mar-13 at 19:52

            First of all, I'd suggest using the one or another way of setting the message body. If you decide to go with the HTMLBody property then construct your string based on the Excel data. If you want to deal with Word you can use its object model. Try to use the following code to paste the content to the end of documents:

            Source https://stackoverflow.com/questions/71451187


            Trying to get vba nested for loop to work for email and pdf export
            Asked 2022-Mar-11 at 17:14

            This code is supposed to do the following:

            1. Take the four worksheets listed in the array (dim as s) export them as a pdf
            2. Attach that pdf to an email and add a simple generic message
            3. Insert the applicable email address into the To field on the email
            4. Display the email to allow the user to review it before they hit send.

            I have this code working correctly except for Step 3.

            The problem I am having is getting the 4 email addresses to loop correctly to load them into the “To: field” for the emails. It will assign the first email address to “strNames” but will continue to use it until after all 4 sheets are exported, so they all are addressed to ABC@gmail.com Only after it exits that loop, will it cycle down to the next email address Achieve@gmail.com Because there are 4 email addresses and 4 worksheets, I end up with 16 emails when it should be 4 different emails each having 4 different applicable attachments.

            I need a nested loop in the code to cycle through the email list, but I’ve been unable to make it work as desired. I added a few notes below to illustrate what is needed.

            Just to clarify, when done I should have 4 emails on my desktop ready to send as follows:

            An email addressed to “ABC@gmail.com” with attached file: 2022 02 (TED)_ABC Therapy.pdf An email addressed to “Achieve@gmail.com” with attached file: 2022 02 (TED)_Achievement Therapy.pdf An email addressed to “Barb@gmail.com” with attached file: 2022 02 (TED)_Barb Therapy.pdf An email addressed to “Robin@yahoo.com” with attached file: 2022 02 (TED)_Felisa, Robin V..pdf

            I would appreciate any help with this VBA code.

            Thanks, Ted



            Answered 2022-Mar-10 at 17:57

            It is easy to see that you're getting 16 results (or emails) in this code because you're using two 4-time cycles. Basically your For i cycle is repeating your For each cycle four times.

            What I would do is delete your For i cycle and maybe add a validation later in the code (if-then) to validate what email address to send the result to. For convenience and to keep it simple, I'll just add a counter for now.

            Source https://stackoverflow.com/questions/71428544


            key,value - how to handle null - python
            Asked 2022-Mar-02 at 23:16

            My data is as below:



            Answered 2022-Mar-02 at 22:58

            You should include a check on the size before you perform unpacking if you don't know its size in advance.

            Source https://stackoverflow.com/questions/71330028


            Hiding php codes from file_get_contents method
            Asked 2022-Feb-19 at 19:03

            I am sending email with PHPMailer. My email design is available in the template.php file. I am pulling the contents of the template.php file with the file_get_contents method in my mail.php file. But I have such a problem, all my php codes in the template.php file are also visible. How can I hide them?




            Answered 2022-Feb-19 at 17:50

            Don’t use file_get_contents for that, use include with output buffering. That way it will run the PHP code and you’ll see the results of its execution instead of the code itself.

            Source https://stackoverflow.com/questions/71187423


            How to get rows of Pandas Dataframe where the column value starts with any of given characters
            Asked 2022-Jan-30 at 17:21

            I have the following Pandas Dataframe:



            Answered 2022-Jan-30 at 16:59

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


            No vulnerabilities reported

            Install bcc

            You can download it from GitHub.


            Already pumped up to commit some code? Here are some resources to join the discussions in the IOVisor community and see what you want to work on.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link

            Explore Related Topics

            Consider Popular Monitoring Libraries


            by netdata


            by getsentry


            by apache


            by osquery


            by dianping

            Try Top Libraries by iovisor


            by iovisorC++


            by iovisorC


            by iovisorGo


            by iovisorC


            by iovisorShell