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Core.OS (Visera.Core.OS)

Core.OS provides OS-related base capabilities: filesystem and file I/O, memory allocation and Arena, thread and sync primitives (atomic, critical section, event, RW lock, spinlock), and time (clock, duration, time point). All APIs are in Visera namespace; implementation uses std or platform API for consistent cross-platform behavior.

Responsibilities

  • FileSystem: Path resolution, file open (stream or FFile), read/write mode and error state (EIOStatus, EFileMode, EStreamMode).
  • Memory: Global memory ops and Arena allocator for frame or local fast allocation.
  • Thread: Thread creation is by caller or runtime; this module provides thread-safe queues (MPSC/SPSC), atomic, critical section, event, RW lock, spinlock for sync and lock-free communication.
  • Time: Clock, Duration, TimePoint and common time types for frame rate, timing and scheduling.

Difference from Platform: Platform provides platform-specific window and path (Windows/macOS/GLFW); OS provides platform-agnostic interface and common implementation (e.g. file I/O via std::fstream/FILE*).

Submodules

Module Description
FileSystem Filesystem abstraction and File handle.
Memory Memory and Arena.
Thread Thread queues (MPSC/SPSC) and Sync primitives.
Time Clock, Duration, TimePoint.

See also