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This is useful for creating byte buffers of actually-different-things.
Copied the argument order from `Allocator.alignedAlloc`
I noted that `ArrayListAligned` is going out of it's way to not set the
alignment at comptime when it is not specified. However, I was not able
to do that the same way here, and good people on IRC, @ifreund in
particular (thanks!) assured me that
[N]T align(@alignOf(T))
is equivalent to
[N]T
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Options have been moved to a single namespace.
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Previously, this API had pid, to be used on POSIX systems, and handle,
to be used on Windows.
This commit unifies the API, defining an Id type that is either the pid
or the HANDLE depending on the target OS.
This commit also prepares for the future by allowing one to import via
`std.process.Child` which is the fully qualified namespace that I intend
to migrate to in the future.
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These declarations are now aliases of their new APIs and marked as
deprecated via doc comments:
* std.build.Builder
* std.build
* std.Build.LibExeObjStep
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This matches the nomenclature internally: a Compilation is the main type
that represents a single invokation of the compiler.
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I've been wanting to do this for along time.
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Playtime is over. I'm working on networking now.
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Closes #13978
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There are intended to be no functional changes in this commit.
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I want to use it for the self-hosted compiler.
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This file contains a collections of functions that may be useful for SIMD, such as generating a vector with a linear range of numbers starting at zero, joining two vectors together, getting the index of the first true in a vector of bools, etc.
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closes #9388
closes #9321
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We already have a LICENSE file that covers the Zig Standard Library. We
no longer need to remind everyone that the license is MIT in every single
file.
Previously this was introduced to clarify the situation for a fork of
Zig that made Zig's LICENSE file harder to find, and replaced it with
their own license that required annual payments to their company.
However that fork now appears to be dead. So there is no need to
reinforce the copyright notice in every single file.
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(#9134)
This is a simple structure containing an array and a length, that can be viewed as a slice.
It is useful to pass-by-copy small data whose exact size is known at runtime, but whose maximum size is known at comptime. This greatly simplifies code that otherwise would require an allocator, or reimplementing what this type does.
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Kick-start initial work on new cross-platform abstraction for
sockets. Adds a test for read timeouts and a test for creating
a non-blocking socket pair on Linux.
The new Socket abstraction is barebones and is made to support both
blocking and non-blocking abstractions, alongside different socket
protocols and domains.
Support for platform-dependant socket options that handles unsupported
platforms gracefully via. comptime checks is provided for the new Socket
abstraction.
This also marks the first out of many commits for introducing breaking
changes to the standard library in a separate `x` folder, which was
pre-approved by @andrewrk.
The intent for the new `x` package is to introduce new async, event loop,
networking, and operating system abstractions that would require breaking
the standard library significantly. By having the `x` package, code in the
standard library and compiler may then slowly be refactored to use the `x`
package. Once modules in the `x` package are stabilized, they can be moved
out of the `x` package, and a global 'grep' can be done to update import
paths that resolve to the stabilized module in the `x` package.
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This branch adds "builtin" and "std" to the import table when using the
self-hosted backend.
"builtin" gains one additional item:
```
pub const zig_is_stage2 = true; // false when using stage1 backend
```
This allows the std lib to do conditional compilation based on detecting
which backend is being used. This will be removed from builtin as soon
as self-hosted catches up to feature parity with stage1.
Keep a sharp eye out - people are going to be tempted to abuse this.
The general rule of thumb is do not use `builtin.zig_is_stage2`. However
this commit breaks the rule so that we can gain limited start.zig support
as we incrementally improve the self-hosted compiler.
This commit also implements `fullyQualifiedNameHash` and related
functionality, which effectively puts all Decls in their proper
namespaces. `fullyQualifiedName` is not yet implemented.
Stop printing "todo" log messages for test decls unless we are in test
mode.
Add "previous definition here" error notes for Decl name collisions.
This commit does not bring us yet to a newly passing test case.
Here's what I'm working towards:
```zig
const std = @import("std");
export fn main() c_int {
const a = std.fs.base64_alphabet[0];
return a - 'A';
}
```
Current output:
```
$ ./zig-cache/bin/zig build-exe test.zig
test.zig:3:1: error: TODO implement more analyze elemptr
zig-cache/lib/zig/std/start.zig:38:46: error: TODO implement structInitExpr ty
```
So the next steps are clear:
* Sema: improve elemptr
* AstGen: implement structInitExpr
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std: Add Priority Dequeue
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Conflicts:
* lib/std/zig/ast.zig
* lib/std/zig/parse.zig
* lib/std/zig/parser_test.zig
* lib/std/zig/render.zig
* src/Module.zig
* src/zir.zig
I resolved some of the conflicts by reverting a small portion of
@tadeokondrak's stage2 logic here regarding `callconv(.Inline)`.
It will need to get reworked as part of this branch.
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Update link.Wasm.zig to use std.wasm for its constants
Make opcodes u8 and non-exhaustive
Update test and rename 'spec' to 'wasm'
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Also known as "Struct-Of-Arrays" or "SOA". The purpose of this data
structure is to provide a similar API to ArrayList but instead of
the element type being a struct, the fields of the struct are in N
different arrays, all with the same length and capacity.
Having this abstraction means we can put them in the same allocation,
avoiding overhead with the allocator. It also saves a tiny bit of
overhead from the redundant capacity and length fields, since each
struct element shares the same value.
This is an alternate implementation to #7854.
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* move concurrency primitives that always operate on kernel threads to
the std.Thread namespace
* remove std.SpinLock. Nobody should use this in a non-freestanding
environment; the other primitives are always preferable. In
freestanding, it will be necessary to put custom spin logic in there,
so there are no use cases for a std lib version.
* move some std lib files to the top level fields convention
* add std.Thread.spinLoopHint
* add std.Thread.Condition
* add std.Thread.Semaphore
* new implementation of std.Thread.Mutex for Windows and non-pthreads Linux
* add std.Thread.RwLock
Implementations provided by @kprotty
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structs which are intended to be directly initialized and support static
initialization should not have init/deinit methods.
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I've enabled only the tests that check things specific to Windows that
are not tested by other systems.
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Move ArrayListSentineled to std lib orphanage
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* split std.ResetEvent into:
- ResetEvent - requires init() at runtime and it can fail. Also
requires deinit().
- StaticResetEvent - can be statically initialized and requires no
deinitialization. Initialization cannot fail.
* the POSIX sem_t implementation can in fact fail on initialization
because it is allowed to be implemented as a file descriptor.
* Completely define, clarify, and explain in detail the semantics of
these APIs. Remove the `isSet` function.
* `ResetEvent.timedWait` returns an enum instead of a possible error.
* `ResetEvent.init` takes a pointer to the ResetEvent instead of
returning a copy.
* On Darwin, `ResetEvent` is implemented using Grand Central Dispatch,
which is exposed by libSystem.
stage2 changes:
* ThreadPool: use a single, pre-initialized `ResetEvent` per worker.
* WaitGroup: now requires init() and deinit() and init() can fail.
- Add a `reset` function.
- Compilation initializes one for the work queue in creation and
re-uses it for every update.
- Rename `stop` to `finish`.
- Simplify the implementation based on the usage pattern.
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We generally get away with atomic primitives, however a lock is required
around the refresh function since it traverses the Node graph, and we
need to be sure no references to Nodes remain after end() is called.
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I spent a long time working on this data structure, and I still think
it's a neat idea, but it has no business being in the std lib.
I'm aware of the few remaining references to SegmentedList that exist in
the std lib, but they are dead code, and so I'm leaving the dead
references as a clue that the code is dead. Cleaning up dead code will
be a separate effort that involves code coverage tools to make sure we
find it all.
std-lib-orphanage commit: 2c36a7894c689ecbaf63d5f489bb0c68773410c4
closes #7190
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* Move leb128 out of debug and remove trivial *mem functions as discussed in #5588
* Turns out one of the *Mem functions was used by MachO. Replaced with trivial use of FixedBufferStream.
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This will parse, format, and compare version strings following the
SemVer 2 specification. See: https://semver.org
Updates #6466
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