SpaceShadow provides real-time software for embedded applications. Our main goal is to deliver reliable, predictable, deterministic, safe, and efficient products that also help reduce power consumption. All products provided by SpaceShadow are designed to work on multiple platforms and are decoupled from the hardware-dependent layer. Sirius RTOS (a real-time operating system kernel) is available now. The product provides features characteristic of modern RTOSs (e.g., priority inversion avoidance, automatic resource release, deadlock detection, etc.). It is an ideal solution for embedded system design and development across a wide range of business needs.

Complete product documentation is available online. As SpaceShadow improves or updates the product, the documentation will be immediately posted in the documentation section of the website. Each document is assigned a unique URL address. Once a document is created, it will never be moved or removed. Any changes (such as updates or marking a document as obsolete) will be noted within the document itself without changing its web address. This allows our customers to access current documentation at any time via the Internet. Users can easily find specific documents using the navigation tree on the left side of the web page.

All source files are delivered in separate directories. The user can relocate them to other directories to define a custom application structure. All header files are included by name (without specifying their path); therefore, header file paths should be set at compile time as extra include directories. All product source files begin with a specific prefix. This avoids conflicts between the product's naming convention and the one used by the customer. To use a product in your application, simply add all product source files to the project and include the XX_API.h file (where XX is the product prefix) in each source file where product functions are used.

Each product can be individually configured and optimized for specific use cases. The configuration process is achieved by redefining product-specific constants. All constants are assigned a default value. If the user wishes to specify a value other than the default, the constant should be redefined with the new value in the global configuration file (Config.h), which is shared by all products. These constants are preprocessor definitions, so new values are assigned using the C language #define directive.

Our products can be used in diverse applications. Well-chosen identifiers for functions, types, and constants enable the user to understand the system's purpose, how it works, and how to use the source code for a specific application.

The names of all functions and variables begin with a two- or three-letter lowercase prefix that identifies the product. The words in the name are separated using medial capitalization (PascalCase), rendering "some words" as "SomeWords" (e.g., osWaitForObject, where the 'os' prefix identifies the Operating System product).

All basic types like INT32, PVOID, SIZE, etc., are always written in uppercase letters. Structure types or function pointers begin with an uppercase 'T', and the rest of the name uses medial capitalization (e.g., TTaskProc).

Configuration constants and definitions are always written in uppercase, with a two-letter prefix and words separated by underscores (e.g., AR_USE_64_BIT).