bcc | BCC - Tools for BPF-based Linux IO analysis networking | Monitoring library
kandi X-RAY | bcc Summary
kandi X-RAY | bcc Summary
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.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of bcc
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bcc Examples and Code Snippets
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
Trending Discussions on bcc
QUESTION
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 :
...ANSWER
Answered 2022-Apr-01 at 20:30You need to use array syntax in your checkboxes' name
attributes on the form:
QUESTION
I am building a mail backend that should add a specific address to the bcc of an email.
...ANSWER
Answered 2022-Apr-01 at 04:13This 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.:
QUESTION
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?
...ANSWER
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.
QUESTION
I deployed a function to firebase and when I test the function to send an email I get the following error:
...ANSWER
Answered 2022-Mar-28 at 20:56I've solved this by creating a new transporter and I've added it inside the function:
QUESTION
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)
Controller
...ANSWER
Answered 2022-Feb-17 at 11:25use ->to()
QUESTION
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:
...ANSWER
Answered 2022-Mar-13 at 19:52First 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:
QUESTION
This code is supposed to do the following:
- Take the four worksheets listed in the array (dim as s) export them as a pdf
- Attach that pdf to an email and add a simple generic message
- Insert the applicable email address into the To field on the email
- 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
...ANSWER
Answered 2022-Mar-10 at 17:57It 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.
QUESTION
My data is as below:
...ANSWER
Answered 2022-Mar-02 at 22:58You should include a check on the size before you perform unpacking if you don't know its size in advance.
QUESTION
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?
Mail.php
...ANSWER
Answered 2022-Feb-19 at 17:50Don’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.
QUESTION
I have the following Pandas Dataframe:
...ANSWER
Answered 2022-Jan-30 at 16:59Something like this?
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