WebSVN – HelenOS-doc – Diff – /prjdoc/trunk/developers/developers.tex


\chapter{Developers}
\label{developers}
 
\section{\JJ}
Jakub is the original author of the SPARTAN kernel and the initiator of
the idea to start the HelenOS project. Once the team was composed, he
implemented considerable parts of the ia64 code and he also worked on
the mips32 memory management. On the generic front, Jakub designed the
generic virtual address translation interface for the 4-level
hierarchical page table translation mechanism as well as the global page
hash table translation mechanism. He has been involved in the address
space management functions and userspace synchronization through
futexes. Other areas in which he contributed include the kernel console
and the kernel ELF loader. Jakub is also the author of the generic buddy
system framework as well as the B+tree implementation. His latest
contribution is the userspace PCI driver.
 
\section{\OP}
{\Ondrej} has completely created the amd64 port and completed the mips32 port
to the extent that it runs on a real MIPS machine\footnote{SGI Indy}.
Besides the architecture specific involvement, {\Ondrej} programmed the slab
allocator and modified the frame allocator to be self-contained which in
turn let the old and very limited heap manager be removed from the
kernel entirely. He also created architecture independent FPU lazy
switching framework. Other example of his activity is the IPC subsystem
and partial TLS\footnote{Thread local storage.} support. Lastly, {\Ondrej}
equipped the kernel console with features found in userspace command
shells (e.g. tab completion of commands and command history through
keyboard arrows) and wrote the kernel configuration software.
 
\section{\MD}
Right from the beginning, Martin has cared about project's code purity
and readibility. He was the first developer to start writing
Doxygen-style comments. He has promoted the proper use of C language
{\tt const} keywords and extensive typedefing. On the tools front, he
has rewritten the initial build system and created all our toolchain
build scripts.
 
Martin worked and much improved the ia32 and amd64 kernel booting using
the Grub bootloader and Multiboot specification. He also created
specialized boot loaders for mips32 and ppc32 --- architectures that
don't provide many other ways to load userspace init tasks. Finally,
Martin bacame the sole author of the entire ppc32 port and has
encountered partial success in booting ppc64 port to real
hardware\footnote{Apple G5.}.
 
\section{\JV}
Jakub has worked on ia32 and the ia64 FPU context switching and passive
ia32 and active and passive ia64 console. He has relocated the ia64
kernel to region 7 (i.e. to the highest addresses) and has first coped
with ia64 interrupts.  Lastly, Jakub programmed the VESA frame buffer
support for ia32 and amd64 and created the userspace framebuffer driver.
 
\section{\JC}
Josef has worked on ia32 memory map detection, softfloat and softint
libraries and printf() standards conformance. He also ported several
kernel libraries to userspace and implemented considerable parts of
HelenOS libc. Josef is the author of the userspace keyboard driver.
 
\section{\SB}
Sergey implemented sorting library functions and implemented the buddy
allocator interface for the frame allocator. He edited project
documentation.
 

Subversion Repositories HelenOS-doc

(root)/prjdoc/trunk/developers/developers.tex – Rev 42 → 162

Rev 42		Rev 162
1	\chapter{Developers}	1	\chapter{Developers}
2	\label{developers}	2	\label{developers}
3		3
4	\section{\JJ}	4	\section{\JJ}
5	Jakub is the original author of the SPARTAN kernel and the initiator of	5	Jakub is the original author of the SPARTAN kernel and the initiator of
6	the idea to start the HelenOS project. Once the team was composed, he	6	the idea to start the HelenOS project. Once the team was composed, he
7	implemented considerable parts of the ia64 code and he also worked on	7	implemented considerable parts of the ia64 code and he also worked on
8	the mips32 memory management. On the generic front, Jakub designed the	8	the mips32 memory management. On the generic front, Jakub designed the
9	generic virtual address translation interface for the 4-level	9	generic virtual address translation interface for the 4-level
10	hierarchical page table translation mechanism as well as the global page	10	hierarchical page table translation mechanism as well as the global page
11	hash table translation mechanism. He has been involved in the address	11	hash table translation mechanism. He has been involved in the address
12	space management functions and userspace synchronization through	12	space management functions and userspace synchronization through
13	futexes. Other areas in which he contributed include the kernel console	13	futexes. Other areas in which he contributed include the kernel console
14	and the kernel ELF loader. Jakub is also the author of the generic buddy	14	and the kernel ELF loader. Jakub is also the author of the generic buddy
15	system framework as well as the B+tree implementation. His latest	15	system framework as well as the B+tree implementation. His latest
16	contribution is the userspace PCI driver.	16	contribution is the userspace PCI driver.
17		17
18	\section{\OP}	18	\section{\OP}
19	{\Ondrej} has completely created the amd64 port and completed the mips32 port	19	{\Ondrej} has completely created the amd64 port and completed the mips32 port
20	to the extent that it runs on a real MIPS machine\footnote{SGI Indy}.	20	to the extent that it runs on a real MIPS machine\footnote{SGI Indy}.
21	Besides the architecture specific involvement, {\Ondrej} programmed the slab	21	Besides the architecture specific involvement, {\Ondrej} programmed the slab
22	allocator and modified the frame allocator to be self-contained which in	22	allocator and modified the frame allocator to be self-contained which in
23	turn let the old and very limited heap manager be removed from the	23	turn let the old and very limited heap manager be removed from the
24	kernel entirely. He also created architecture independent FPU lazy	24	kernel entirely. He also created architecture independent FPU lazy
25	switching framework. Other example of his activity is the IPC subsystem	25	switching framework. Other example of his activity is the IPC subsystem
26	and partial TLS\footnote{Thread local storage.} support. Lastly, {\Ondrej}	26	and partial TLS\footnote{Thread local storage.} support. Lastly, {\Ondrej}
27	equipped the kernel console with features found in userspace command	27	equipped the kernel console with features found in userspace command
28	shells (e.g. tab completion of commands and command history through	28	shells (e.g. tab completion of commands and command history through
29	keyboard arrows) and wrote the kernel configuration software.	29	keyboard arrows) and wrote the kernel configuration software.
30		30
31	\section{\MD}	31	\section{\MD}
32	Right from the beginning, Martin has cared about project's code purity	32	Right from the beginning, Martin has cared about project's code purity
33	and readibility. He was the first developer to start writing	33	and readibility. He was the first developer to start writing
34	Doxygen-style comments. He has promoted the proper use of C language	34	Doxygen-style comments. He has promoted the proper use of C language
35	{\tt const} keywords and extensive typedefing. On the tools front, he	35	{\tt const} keywords and extensive typedefing. On the tools front, he
36	has rewritten the initial build system and created all our toolchain	36	has rewritten the initial build system and created all our toolchain
37	build scripts.	37	build scripts.
38		38
39	Martin worked and much improved the ia32 and amd64 kernel booting using	39	Martin worked and much improved the ia32 and amd64 kernel booting using
40	the Grub bootloader and Multiboot specification. He also created	40	the Grub bootloader and Multiboot specification. He also created
41	specialized boot loaders for mips32 and ppc32 --- architectures that	41	specialized boot loaders for mips32 and ppc32 --- architectures that
42	don't provide many other ways to load userspace init tasks. Finally,	42	don't provide many other ways to load userspace init tasks. Finally,
43	Martin bacame the sole author of the entire ppc32 port and has	43	Martin bacame the sole author of the entire ppc32 port and has
44	encountered partial success in booting ppc64 port to real	44	encountered partial success in booting ppc64 port to real
45	hardware\footnote{Apple G5.}.	45	hardware\footnote{Apple G5.}.
46		46
47	\section{\JV}	47	\section{\JV}
48	Jakub has worked on ia32 and the ia64 FPU context switching and passive	48	Jakub has worked on ia32 and the ia64 FPU context switching and passive
49	ia32 and active and passive ia64 console. He has relocated the ia64	49	ia32 and active and passive ia64 console. He has relocated the ia64
50	kernel to region 7 (i.e. to the highest addresses) and has first coped	50	kernel to region 7 (i.e. to the highest addresses) and has first coped
51	with ia64 interrupts. Lastly, Jakub programmed the VESA frame buffer	51	with ia64 interrupts. Lastly, Jakub programmed the VESA frame buffer
52	support for ia32 and amd64 and created the userspace framebuffer driver.	52	support for ia32 and amd64 and created the userspace framebuffer driver.
53		53
54	\section{\JC}	54	\section{\JC}
55	Josef has worked on ia32 memory map detection, softfloat and softint	55	Josef has worked on ia32 memory map detection, softfloat and softint
56	libraries and printf() standards conformance. He also ported several	56	libraries and printf() standards conformance. He also ported several
57	kernel libraries to userspace and implemented considerable parts of	57	kernel libraries to userspace and implemented considerable parts of
58	HelenOS libc. Josef is the author of the userspace keyboard driver.	58	HelenOS libc. Josef is the author of the userspace keyboard driver.
59		59
60	\section{\SB}	60	\section{\SB}
61	Sergey implemented sorting library functions and implemented the buddy	61	Sergey implemented sorting library functions and implemented the buddy
62	allocator interface for the frame allocator. He edited project	62	allocator interface for the frame allocator. He edited project
63	documentation.	63	documentation.
64		64