92749d9a76
The dynamic linker is already taking care of this for us. Now
that crt0 is statically linked into each executable and shared
library this breaks things because initializers are invoked twice.
Before this PR this didn't crash because crt0 and its _start()
function was contained in LibC and thus only LibC's initializers were
invoked several times which wasn't as much of a problem because
these initializers didn't have any side effects (such as malloc/free).
However, user programs are more likely to have constructors with side
effects, e.g.:
std::string g_test("hello!");
This would allocate memory when the constructor is invoked. When it is
invoked again the original allocation would be leaked and another copy
of the string would get allocated. Worse still, when the destructors are
invoked twice the memory would get free'd twice which would likely
crash the program.
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|---|---|---|
| .github | ||
| AK | ||
| Base | ||
| Documentation | ||
| Kernel | ||
| Meta | ||
| Ports | ||
| Toolchain | ||
| Userland | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| .prettierignore | ||
| .prettierrc | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| README.md | ||
SerenityOS
Graphical Unix-like operating system for x86 computers.
About
SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.
Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix. This is a system by us, for us, based on the things we like.
I (Andreas) regularly post raw hacking sessions and demos on my YouTube channel.
Sometimes I write about the system on my github.io blog.
I'm also on Patreon and GitHub Sponsors if you would like to show some support that way.
Screenshot
Kernel features
- x86 (32-bit) kernel with pre-emptive multi-threading
- Hardware protections (SMEP, SMAP, UMIP, NX, WP, TSD, ...)
- IPv4 stack with ARP, TCP, UDP and ICMP protocols
- ext2 filesystem
- POSIX signals
- Purgeable memory
- /proc filesystem
- Pseudoterminals (with /dev/pts filesystem)
- Filesystem notifications
- CPU and memory profiling
- SoundBlaster 16 driver
- VMWare/QEMU mouse integration
System services
- Launch/session daemon (SystemServer)
- Compositing window server (WindowServer)
- Text console manager (TTYServer)
- DNS client (LookupServer)
- Network protocols server (ProtocolServer)
- Software-mixing sound daemon (AudioServer)
- Desktop notifications (NotificationServer)
- HTTP server (WebServer)
- Telnet server (TelnetServer)
- DHCP client (DHCPClient)
Libraries
- C++ templates and containers (AK)
- Event loop and utilities (LibCore)
- 2D graphics library (LibGfx)
- GUI toolkit (LibGUI)
- Cross-process communication library (LibIPC)
- HTML/CSS engine (LibWeb)
- JavaScript engine (LibJS)
- Markdown (LibMarkdown)
- Audio (LibAudio)
- PCI database (LibPCIDB)
- Terminal emulation (LibVT)
- Out-of-process network protocol I/O (LibProtocol)
- Mathematical functions (LibM)
- ELF file handling (LibELF)
- POSIX threading (LibPthread)
- Higher-level threading (LibThread)
- Transport Layer Security (LibTLS)
- HTTP and HTTPS (LibHTTP)
Userland features
- Unix-like libc and userland
- Shell with pipes and I/O redirection
- On-line help system (both terminal and GUI variants)
- Web browser (Browser)
- C++ IDE (HackStudio)
- IRC client
- Desktop synthesizer (Piano)
- Various desktop apps & games
- Color themes
How do I read the documentation?
Man pages are browsable outside of SerenityOS under Base/usr/share/man.
When running SerenityOS you can use man for the terminal interface, or help for the GUI interface.
How do I build and run this?
See the SerenityOS build instructions
Before opening an issue
Please see the issue policy.
Get in touch
IRC: #serenityos on the Freenode IRC network.
Discord: SerenityOS Discord
Author
- Andreas Kling - awesomekling
Contributors
- Robin Burchell - rburchell
- Conrad Pankoff - deoxxa
- Sergey Bugaev - bugaevc
- Liav A - supercomputer7
- Linus Groh - linusg
- Ali Mohammad Pur - alimpfard
- Shannon Booth - shannonbooth
- Hüseyin ASLITÜRK - asliturk
- Matthew Olsson - mattco98
- Nico Weber - nico
- Brian Gianforcaro - bgianfo
- Ben Wiederhake - BenWiederhake
- Tom - tomuta
- Paul Scharnofske - asynts
- Itamar Shenhar - itamar8910
- Luke Wilde - Lubrsi
- Brendan Coles - bcoles
- Andrew Kaster - ADKaster
- thankyouverycool - thankyouverycool
(And many more!) The people listed above have landed more than 100 commits in the project. :^)
License
SerenityOS is licensed under a 2-clause BSD license.