From b1485c97b493f7eaf65c6afdfb82e3065306b8fe Mon Sep 17 00:00:00 2001
From: Gabriel Schneider <gbrls@0x4200.cafe>
Date: Tue, 29 Sep 2026 22:58:53 -0300
Subject: The PDF benches share their clock, fatal exit, hash, count parser and
 effect drain, and lspprobe is lspbench's probe subcommand

B4: test/bench_util.zig holds what pdf_bench, pdf_pointer_bench, pdf_scroll_bench and pdf_sections_bench each copied (nowNs x4, fatal x3 named per bench, mix x3, parsePositive/parseCount x3, drainEffects x2). They stay four entry points: pdf_bench links its own mupdf module (with its C source and c_heap) where the others link the core's, which one executable cannot import under one name, and their reports and identities are each bench's own. pdf_sections_bench had rotted since the pane's cursor and selections moved to its body and the render revision became next_raster_revision; it builds and runs again. C6: tools/lspprobe.zig is lspbench's `probe` subcommand (zig build lspbench -- probe <kind> <file> <line>:<col>), and the lspprobe build step goes; docs/lsp.md names the new command.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 test/pdf_scroll_bench.zig | 43 +++++++++----------------------------------
 1 file changed, 9 insertions(+), 34 deletions(-)

(limited to 'test/pdf_scroll_bench.zig')

diff --git a/test/pdf_scroll_bench.zig b/test/pdf_scroll_bench.zig
index 33dfe70a..a4511dbe 100644
--- a/test/pdf_scroll_bench.zig
+++ b/test/pdf_scroll_bench.zig
@@ -42,6 +42,11 @@
 //!
 //! Setup, teardown, checksumming, and reporting are outside every timer.
 const std = @import("std");
+const bench_util = @import("bench_util.zig");
+const nowNs = bench_util.nowNs;
+const fatal = bench_util.Fatal("pdf-scroll-bench").f;
+const mix = bench_util.mix;
+const drainEffects = bench_util.drainEffects;
 const libc = std.c;
 const pardes = @import("pardes");
 const pdf = @import("mupdf");
@@ -211,14 +216,6 @@ fn parseArgs(args: []const []const u8) Config {
     return config;
 }
 
-fn parseCount(flag: []const u8, text: []const u8) usize {
-    const value = std.fmt.parseUnsigned(usize, text, 10) catch
-        fatal("{s} expects a positive integer", .{flag});
-    if (value == 0 or value > 10_000)
-        fatal("{s} must be in 1..10000", .{flag});
-    return value;
-}
-
 const Travel = struct {
     /// Scrollable display pixels: the whole strip minus one screenful.
     max_scroll: f64,
@@ -520,20 +517,6 @@ fn stridedHash(seed: u64, rgba: []const u8) u64 {
     return hash;
 }
 
-fn mix(seed: u64, value: anytype) u64 {
-    const Value = @TypeOf(value);
-    const Stable = switch (@typeInfo(Value)) {
-        .comptime_int => u64,
-        else => Value,
-    };
-    var stable: Stable = value;
-    return std.hash.Wyhash.hash(seed, std.mem.asBytes(&stable));
-}
-
-fn drainEffects(core: *pardes.Pardes) void {
-    while (core.nextEffect()) |_| {}
-}
-
 fn verifyIdentity(
     name: []const u8,
     expected: *?Identity,
@@ -557,13 +540,6 @@ fn verifyIdentity(
     } else expected.* = got;
 }
 
-fn nowNs() u64 {
-    var ts: std.c.timespec = undefined;
-    _ = std.c.clock_gettime(.MONOTONIC, &ts);
-    return @as(u64, @intCast(ts.sec)) *| 1_000_000_000 +|
-        @as(u64, @intCast(ts.nsec));
-}
-
 fn reportText(config: Config, travel: Travel, results: []const Result) void {
     std.debug.print("pardes PDF fast-scroll benchmark ({s})\n", .{bench_config.core_optimize});
     std.debug.print(
@@ -649,13 +625,12 @@ fn reportJson(io: std.Io, config: Config, travel: Travel, results: []const Resul
     std.Io.File.stdout().writeStreamingAll(io, out.buffered()) catch {};
 }
 
-fn fatal(comptime format: []const u8, args: anytype) noreturn {
-    std.debug.print("pdf-scroll-bench: " ++ format ++ "\n", args);
-    std.process.exit(1);
-}
-
 comptime {
     // The bench links the real MuPDF wrapper the core uses; keep the import
     // load-bearing so a build that silently dropped it fails here.
     _ = pdf.Document;
 }
+
+fn parseCount(flag: []const u8, text: []const u8) usize {
+    return bench_util.parsePositive(fatal, flag, text, 10_000);
+}
-- 
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