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| author | Andrew Kelley <andrew@ziglang.org> | 2022-04-19 21:51:08 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2022-04-20 17:37:35 -0700 |
| commit | f7596ae9423e9de8276629803147e1a243f2177b (patch) | |
| tree | b97f2a8e8fdb84a118f587bcbfd76918710587dd /lib/std/std.zig | |
| parent | 4f527e5d36f66a83ff6a263a03f16e2c4d049f1e (diff) | |
| download | zig-f7596ae9423e9de8276629803147e1a243f2177b.tar.gz zig-f7596ae9423e9de8276629803147e1a243f2177b.zip | |
stage2: use indexes for Decl objects
Rather than allocating Decl objects with an Allocator, we instead allocate
them with a SegmentedList. This provides four advantages:
* Stable memory so that one thread can access a Decl object while another
thread allocates additional Decl objects from this list.
* It allows us to use u32 indexes to reference Decl objects rather than
pointers, saving memory in Type, Value, and dependency sets.
* Using integers to reference Decl objects rather than pointers makes
serialization trivial.
* It provides a unique integer to be used for anonymous symbol names,
avoiding multi-threaded contention on an atomic counter.
Diffstat (limited to 'lib/std/std.zig')
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