Commit Graph

3 Commits

Author SHA1 Message Date
Yuta Saito
709359cfab Rename duplicated swift::fatalError definition in swiftRuntime and swift_Concurrency
Both swiftRuntime and swift_Concurrency had swift::fatalError
implementation, but it causes symbol conflict when -static-stdlib.

This patch renames one of the impl in swift_Concurrency to avoid
conflict.
2021-04-28 23:52:18 +09:00
Erik Eckstein
ec1490d06e [concurrency] Implement the Task allocator as bump-pointer allocator.
Use the StackAllocator as task allocator.

TODO: we could pass an initial pre-allocated first slab to the allocator, which is allocated on the stack or with the parent task's allocator.

rdar://problem/71157018
2020-12-09 22:22:28 +01:00
Erik Eckstein
e7b5843b33 runtime: add a StackAllocator utility
A StackAllocator performs fast allocation and deallocation of memory by implementing a bump-pointer allocation strategy.
In contrast to a pure bump-pointer allocator, it's possible to free memory.
Allocations and deallocations must follow a strict stack discipline.

In general, slabs which become unused are _not_ freed, but reused for subsequent allocations.
The first slab can be placed into pre-allocated memory.
2020-12-09 22:22:28 +01:00