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fc690f1c47
* Split the internal state into incoming and outgoing message relations * Avoid fragmenting of one state like formerly '_state' and '_help' * Remove pointer to caller, use incoming FIFO instead This commit fixes at least two bugs that were triggered by tests that destroy threads in many different states, like run/bomb: * The '_help' data member was not reset reliable in each situation where a helping relationship came to an end. However, when we fixed this bug alone in the old state model, the issues remained. The new state model fixes this bug as well. * A thread sometimes referenced an already dead thread as receiver. This caused the kernel IPC code to access the vtable of an object that didn't exist any longer. Note that the two threads were not in direct IPC relationship while the receiver was destroyed, so, there must have been an intermediate node between them. Due to the complexity of this problem, we eventually gave up pin-pointing the exact reason in the kernel IPC code. The issue disappeared with the new state model. Fix genodelabs/genode#4704
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Genode source-code repositories
===============================
This directory contains the source-code repositories of the Genode OS
Framework. Each sub directory has the same principle layout as described in the
build-system manual:
:Build-system manual:
[https://genode.org/documentation/developer-resources/build_system]
The build system uses a configurable selection of those reposities to obtain
the source codes for the build process. The repositories are not independent
but build upon of each other:
:'base':
This directory contains the source-code repository of the fundamental
frameworks and interfaces of Genode. Furthermore, it contains the generic
parts of core.
:'base-<platform>':
These directories contain platform-specific source-code repositories
complementing the 'base' repository. The following platforms are supported:
:'hw':
The hw platform hosts Genode on a custom microkernel specifically
developed for Genode. The name "hw" denotes that Genode is executed on
bare hardware without a 3rd-party kernel underneath.
:'linux':
Linux kernel (both x86_32 and x86_64)
:'nova':
NOVA hypervisor ([https://hypervisor.org])
:'foc':
Fiasco.OC is a modernized version of the Fiasco microkernel with a
completely revised kernel interface fostering capability-based
security. It is not compatible with L4/Fiasco.
:'okl4':
OKL4 kernel (x86_32 and ARM) developed at Open-Kernel-Labs.
:'pistachio':
L4ka::Pistachio kernel developed at University of Karlsruhe.
:'fiasco':
L4/Fiasco kernel developed at University of Technology Dresden.
:'sel4':
seL4 microkernel ([https://sel4.systems/])
:'os':
This directory contains the non-base OS components such as the init
component, device drivers, and basic system services.
:'demo':
This directory contains the source-code repository of various services and
applications that we use for demonstration purposes. For example, a graphical
application launcher called Launchpad and the Scout tutorial browser.
:'hello_tutorial':
Tutorial for creating a simple client-server scenario with Genode. This
repository includes documentation and the complete source code.
:'libports':
This source-code repository contains ports of popular open-source libraries
to Genode, most importantly the C library. The repository contains no
upstream source code but means to download the code and adapt it to Genode.
For instructions about how to use this mechanism, please consult the README
file at the top level of the repository. Among the 3rd-party libraries
are Qt5, freetype, ncurses, and Mesa.
:'dde_linux':
This source-code repository contains the device driver environment for
executing Linux subsystems as Genode components.
:'dde_ipxe':
This source-code repository contains the device-driver environment for
executing network drivers of the iPXE project.
:'dde_bsd':
This source-code repository contains the device-driver environment for
drivers of the OpenBSD operating system.
:'dde_rump':
This source-code repository contains the port of rump kernels, which are
used to execute subsystems of the NetBSD kernel as user level processes.
The repository contains a server that uses a rump kernel to provide
various NetBSD file systems to Genode.
:'pc':
This source-code repository hosts device drivers that are specific for PC
platforms. It depends on the 'dde_linux' repository.
:'ports':
This source-code repository hosts ports of 3rd-party applications to
Genode. The repository does not contain upstream source code but provides
a mechanism for downloading the official source distributions and adapt
them to the Genode environment. The used mechanism is roughly the same
as used for the 'libports' repository. Please consult 'libports/README'
for further information.
:'gems':
This source-code repository contains Genode applications that use
both native Genode interfaces as well as features of other high-level
repositories, in particular shared libraries provided by 'libports'.