opentelemetry-cpp | The OpenTelemetry C++ Client | Analytics library
kandi X-RAY | opentelemetry-cpp Summary
kandi X-RAY | opentelemetry-cpp Summary
The OpenTelemetry C++ Client
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opentelemetry-cpp Key Features
opentelemetry-cpp Examples and Code Snippets
Community Discussions
Trending Discussions on opentelemetry-cpp
QUESTION
I am trying to compile some code for arm (v7a), that had a
...ANSWER
Answered 2021-Nov-23 at 07:21The __yield
intrinsic is specified as part of the ARM C Language Extensions (see 8.4 "Hints"). It emits the yield
instruction, which is the rough equivalent of x86 pause
. It is intended precisely for situations like waiting on a spinlock; it keeps the CPU from hammering on the cache line excessively (which hurts performance), possibly saves some power, and, in case of a hyperthreading CPU, makes more computational units available to the other logical processor.
(Note that it is purely a CPU function, and not an OS or library call; it doesn't yield a CPU timeslice to the operating system like the similarly named pause()
or sched_yield()
or std::this_thread::yield()
calls would do.)
Although GCC supports some of the ACLE intrinsics, it seems to be missing this one. You should be able to substitute with asm volatile("yield");
. The yield
instruction has no architectural effect (it executes like nop
) so no register or memory clobbers are needed.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install opentelemetry-cpp
As an application owner or the library author, you can find the getting started guide and reference documentation on opentelemetry-cpp.readthedocs.io. The examples/simple directory contains a minimal program demonstrating how to instrument a small library using a simple processor and console exporter, along with build files for CMake and Bazel.
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