mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-01-20 06:15:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

Revert "std.mem.Allocator: add alignedCreate"

Browse Source 
This reverts commit 5647a73fea7ecc9e1ee190362ef47f402eb95dff.
This commit is contained in:
Veikka Tuominen 2022-07-23 15:29:37 +03:00
parent b728e6aa00
commit 72c60acd5d
1 changed files with 0 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
lib/std/mem/Allocator.zig
View File

@ -185,64 +185,6 @@ pub fn create(self: Allocator, comptime T: type) Error!*T {
return &slice[0];
}
/// Returns an aligned pointer to undefined memory.
/// Call `destroy` with the result to free the memory.
pub fn alignedCreate(
self: Allocator,
comptime T: type,
// null means naturally aligned
comptime alignment: ?u29,
) Error!*align(alignment orelse @alignOf(T)) T {
if (@sizeOf(T) == 0) return @as(*T, undefined);
const slice = try self.allocAdvancedWithRetAddr(T, alignment, 1, .exact, @returnAddress());
return &slice[0];
}
test "create" {
// Non-zero type, greater alignment
{
const x = try std.testing.allocator.alignedCreate(u8, @alignOf(u32));
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u32));
}
// Non-zero type, null alignment
{
const x = try std.testing.allocator.alignedCreate(u8, null);
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u8));
}
// Non-zero type, lesser alignment
{
const x = try std.testing.allocator.alignedCreate(u32, @alignOf(u5));
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u5));
}
// Zero type, greater alignment
{
const x = try std.testing.allocator.alignedCreate([0]u8, @alignOf(u32));
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
}
// Zero type, null alignment
{
const x = try std.testing.allocator.alignedCreate([0]u8, null);
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
}
// Zero alignment, lesser alignment
{
const x = try std.testing.allocator.alignedCreate([0]u8, @alignOf(u5));
defer std.testing.allocator.destroy(x);
assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
}
}
/// `ptr` should be the return value of `create`, or otherwise
/// have the same address and alignment property.
pub fn destroy(self: Allocator, ptr: anytype) void {