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readme: create userland multithread section

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Ciro Santilli 六四事件 法轮功
2019-07-18 00:00:00 +00:00
parent 6fe321deed
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README.adoc
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@@ -965,7 +965,7 @@ Notable userland content included / moving into this repository includes:
==== Userland setup getting started ==== Userland setup getting started
There are several ways to run our userland content, notably: There are several ways to run our <<userland-content>>, notably:
* natively on the host as shown at: <<userland-setup-getting-started-natively>> * natively on the host as shown at: <<userland-setup-getting-started-natively>>
+ +
@@ -11792,12 +11792,12 @@ One "downside" of glibc is that it exercises much more kernel functionality on i
This section contains userland content, such as <<c>>, <<cpp>> and <<posix>> examples. This section contains userland content, such as <<c>>, <<cpp>> and <<posix>> examples.
Getting started at: <<userland-setup>>
Userland assembly content is located at: <<userland-assembly>>. It was split from this section basically becase we were hitting the HTML `h6` limit, stupid web :-) Userland assembly content is located at: <<userland-assembly>>. It was split from this section basically becase we were hitting the HTML `h6` limit, stupid web :-)
This content makes up the bulk of the link:userland/[] directory. This content makes up the bulk of the link:userland/[] directory.
Getting started at: <<userland-setup>>
The quickest way to run the arch agnostic examples, which comprise the majority of the examples, is natively with: <<userland-setup-getting-started-natively>> The quickest way to run the arch agnostic examples, which comprise the majority of the examples, is natively with: <<userland-setup-getting-started-natively>>
This section was originally moved in here from: https://github.com/cirosantilli/cpp-cheat This section was originally moved in here from: https://github.com/cirosantilli/cpp-cheat
@@ -11864,6 +11864,10 @@ Programs under link:userland/cpp/[] are examples of https://en.wikipedia.org/wik
* link:userland/cpp/empty.cpp[] * link:userland/cpp/empty.cpp[]
* link:userland/cpp/hello.cpp[] * link:userland/cpp/hello.cpp[]
[[cpp-multithreading]]
==== C++ multithreading
* `<atomic>`: <<cpp17>> 32 "Atomic operations library" * `<atomic>`: <<cpp17>> 32 "Atomic operations library"
** link:userland/cpp/atomic.cpp[] ** link:userland/cpp/atomic.cpp[]
@@ -11906,6 +11910,14 @@ getconf -a
`getconf` is also specified by POSIX at: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/getconf.html but not the `-a` option which shows all configurations. `getconf` is also specified by POSIX at: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/getconf.html but not the `-a` option which shows all configurations.
=== Userland multithreading
The following sections are related to multithreading in userland:
* <cpp-multithreading>
* <<x86-thread-synchronization-primitives>>
* <<arm-lse>>
== Userland assembly == Userland assembly
Programs under `userland/arch/<arch>/` are examples of userland assembly programming. Programs under `userland/arch/<arch>/` are examples of userland assembly programming.
@@ -13228,7 +13240,9 @@ TODO We didn't manage to find a working ARM analogue to <<x86-rdtsc-instruction>
* https://stackoverflow.com/questions/31620375/arm-cortex-a7-returning-pmccntr-0-in-kernel-mode-and-illegal-instruction-in-u/31649809#31649809 * https://stackoverflow.com/questions/31620375/arm-cortex-a7-returning-pmccntr-0-in-kernel-mode-and-illegal-instruction-in-u/31649809#31649809
* https://blog.regehr.org/archives/794 * https://blog.regehr.org/archives/794
=== x86 LOCK prefix === x86 thread synchronization primitives
==== x86 LOCK prefix
Inline assembly example at: link:userland/cpp/atomic.cpp[] Inline assembly example at: link:userland/cpp/atomic.cpp[]