22690efcc2
Instead of always using std.testing.allocator, the test harness now follows the same logic as self-hosted for choosing an allocator - that is - it uses C allocator when linking libc, std.testing.allocator otherwise, and respects `-Dforce-gpa` to override the decision. I did this because I found GeneralPurposeAllocator to be prohibitively slow when doing multi-threading, even in the context of a debug build. There is now a second thread pool which is used to spawn each test case. The stage2 tests are passed the first thread pool. If it were only multi-threading the stage1 tests then we could use the same thread pool for everything. However, the problem with this strategy with stage2 is that stage2 wants to spawn tasks and then call wait() on the main thread. If we use the same thread pool for everything, we get a deadlock because all the threads end up all hanging at wait() and nothing is getting done. So we use our second thread pool to simulate a "process pool" of sorts. I spent most of the time working on this commit scratching my head trying to figure out why I was getting ETXTBSY when spawning the test cases. Turns out it's a fundamental Unix design flaw, already a known, unsolved issue by Go and Java maintainers: https://github.com/golang/go/issues/22315 https://bugs.openjdk.org/browse/JDK-8068370 With this change, the following command, executed on my laptop, went from 6m24s to 1m44s: ``` stage1/bin/zig build test-cases -fqemu -fwasmtime -Denable-llvm ``` closes #11818
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
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The ultimate goal of the Zig project is to serve users. As a first-order effect, this means users of the compiler, helping programmers to write better software. Even more important, however, are the end-users.
Zig is intended to be used to help end-users accomplish their goals. Zig should be used to empower end-users, never to exploit them financially, or to limit their freedom to interact with hardware or software in any way.
However, such problems are best solved with social norms, not with software licenses. Any attempt to complicate the software license of Zig would risk compromising the value Zig provides.
Therefore, Zig is available under the MIT (Expat) License, and comes with a humble request: use it to make software better serve the needs of end-users.
This project redistributes code from other projects, some of which have other licenses besides MIT. Such licenses are generally similar to the MIT license for practical purposes. See the subdirectories and files inside lib/ for more details.