motiejus/zig
1
Fork 0
Code Releases Activity

Use a fixed chunk size when calculating MachO UUID

Browse Source
This commit is contained in:
Jeremy Volkman
2024-01-05 00:55:59 -08:00
committed by Jakub Konka
parent f5978181e4
commit 8fd15c6ca8
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/link/MachO/uuid.zig
View File

@@ -5,9 +5,9 @@
/// TODO LLD also hashes the output filename to disambiguate between same builds with different
/// output files. Should we also do that?
pub fn calcUuid(comp: *const Compilation, file: fs.File, file_size: u64, out: *[Md5.digest_length]u8) !void {
const num_chunks = @max(comp.thread_pool.threads.len, 1) * 0x10;
const chunk_size = @divTrunc(file_size, num_chunks);
const actual_num_chunks = if (@rem(file_size, num_chunks) > 0) num_chunks + 1 else num_chunks;
const chunk_size: usize = 1024 * 1024;
const num_chunks: usize = std.math.cast(usize, @divTrunc(file_size, chunk_size)) orelse return error.Overflow;
const actual_num_chunks = if (@rem(file_size, chunk_size) > 0) num_chunks + 1 else num_chunks;
const hashes = try comp.gpa.alloc([Md5.digest_length]u8, actual_num_chunks);
defer comp.gpa.free(hashes);