Crate fork_union

OpenMP-style cross-platform fine-grained parallelism library.

Fork Union provides a minimalistic cross-platform thread-pool implementation and Parallel Algorithms, avoiding dynamic memory allocations, exceptions, system calls, and heavy Compare-And-Swap instructions. The library leverages the “weak memory model” to allow Arm and IBM Power CPUs to aggressively optimize execution at runtime. It also aggressively tests against overflows on smaller index types, and is safe to use even with the maximal usize values. It’s compatible with the Nightly toolchain and requires the allocator_api feature to be enabled.

Structs

Prong

Describes a portion of work executed on a specific thread.

SyncConstPtr

Raw const pointer that can cross threads.

SyncMutPtr

Raw mutable pointer that can cross threads.

ThreadPool

Minimalistic, fixed‑size thread‑pool for blocking scoped parallelism.

Enums

Error

Functions

for_each_prong_mut

Visit every element exactly once, passing both the Prong (so you know thread_index and task_index) and a mutable reference to that element.

for_each_prong_mut_dynamic

Visit every element exactly once, passing both the Prong (so you know thread_index and task_index) and a mutable reference to that element.

for_n

Distributes n similar duration calls between threads by individual indices.

for_n_dynamic

Executes n uneven tasks on all threads, greedily stealing work.

for_slices

Distributes n similar duration calls between threads in slices.

spawn

Spawns a pool with the default allocator.