tiny.profiling.reduction
Defined in tiny.profiling.
API (29)
Actions
Public operations.
Result.processCountResult.stateNamecapturedirectBenchmarkDomainparseparseDomainrelocateverifywriteDomainJsonwriteJson
Types and contracts
Public types and contracts.
AllocationAttributionAllocationMaximaArtifactBenchmarkCompleteDomainDeclarationExecutionNotApplicableNotApplicableReasonResultSourceStatistics
Values and defaults
Public values and defaults.
bootstrap_confidence_per_millebootstrap_iterationsbootstrap_seedmax_benchmarksmax_inner_samplesmax_processesschema
Source
Source: src/profiling/reduction.zig
zig
const std = @import("std");const bench = @import("bench");const pretty = @import("pretty");const sys = @import("sys");const fingerprint = @import("root.zig").fingerprint;const host = @import("root.zig").host;const ingest = @import("root.zig").ingest;const json = @import("root.zig").json;const profiling_schema = @import("root.zig").schema;const pretty_json = pretty.json;pub const schema = "tiny.profiling.benchmark-process-reduction/v1";pub const max_processes: usize = host.process.max_executions;pub const max_benchmarks: usize = 256;pub const max_inner_samples: usize = 10_000;pub const bootstrap_iterations: u32 = 1_000;pub const bootstrap_confidence_per_mille: u16 = 950;pub const bootstrap_seed: u64 = 0x5459_5052_4f43_4d45;comptime { std.debug.assert(max_processes == 100); std.debug.assert(max_benchmarks > 1); std.debug.assert(max_inner_samples >= max_processes); std.debug.assert(bootstrap_iterations > 0); std.debug.assert(bootstrap_confidence_per_mille == 950); std.debug.assert(schema.len > 0);}pub const Execution = struct { index: usize, acquisition_position: ?usize, exit_code: i64, bench_jsonl: []const u8, structured: []const u8, structured_bench_path: ?[]const u8 = null,};pub const Artifact = struct { path: []const u8, identity: fingerprint.File,};pub const Source = struct { execution_index: usize, acquisition_position: ?usize, structured_bench_path: []const u8, bench_jsonl: Artifact, structured: Artifact,};pub const AllocationAttribution = enum { none, sample_call, prepare_owner,};pub const AllocationMaxima = struct { alloc_count: ?u64 = null, free_count: ?u64 = null, alloc_bytes: ?u64 = null, alloc_count_per_eval: ?u64 = null, free_count_per_eval: ?u64 = null, alloc_bytes_per_eval: ?u64 = null, fn observe(self: *AllocationMaxima, other: AllocationMaxima) void { inline for (@typeInfo(AllocationMaxima).@"struct".field_names) |field_name| { const incoming = @field(other, field_name); const current = @field(self, field_name); @field(self, field_name) = maxOptional(current, incoming); } }};pub const Statistics = struct { min_ns: u64, max_ns: u64, mean_ns: f64, median_ns: u64, p75_ns: u64, p95_ns: u64, p99_ns: u64, total_ns: u64, median_interval: bench.ConfidenceInterval,};pub const Benchmark = struct { key: []const u8, suite: []const u8, id: []const u8, allocation_attribution: AllocationAttribution, sample_ns: []const u64, inner_sample_count: []const u32, statistics: Statistics, allocation_maxima: AllocationMaxima,};pub const NotApplicableReason = enum { fewer_than_two_executions, outside_direct_benchmark_domain,};pub const NotApplicable = struct { reason: NotApplicableReason, process_count: usize,};pub const Complete = struct { sources: []const Source, benchmarks: []const Benchmark,};pub const Result = union(enum) { not_applicable: NotApplicable, complete: Complete, pub fn stateName(self: Result) []const u8 { return @tagName(self); } pub fn processCount(self: Result) usize { return switch (self) { .not_applicable => |value| value.process_count, .complete => |value| value.sources.len, }; }};pub const DomainDeclaration = struct { benchmark_surface: bool, direct_execution: bool, host_profiler: bool, tracy: bool, causal: bool, allocation_trace: bool, capture_control: bool,};pub fn directBenchmarkDomain(declaration: DomainDeclaration) bool { return declaration.benchmark_surface and declaration.direct_execution and !declaration.host_profiler and !declaration.tracy and !declaration.causal and !declaration.allocation_trace and !declaration.capture_control;}pub fn parseDomain(value: std.json.Value) !DomainDeclaration { const object = json.object(value) catch return error.InvalidBenchmarkReductionDomain; return .{ .benchmark_surface = try domainBool(object, "benchmark_surface"), .direct_execution = try domainBool(object, "direct_execution"), .host_profiler = try domainBool(object, "host_profiler"), .tracy = try domainBool(object, "tracy"), .causal = try domainBool(object, "causal"), .allocation_trace = try domainBool(object, "allocation_trace"), .capture_control = try domainBool(object, "capture_control"), };}pub fn writeDomainJson( out: *pretty_json.Writer, declaration: DomainDeclaration,) !void { try out.beginObject(); inline for (@typeInfo(DomainDeclaration).@"struct".field_names) |field| { try out.objectField(field); try out.write(@field(declaration, field)); } try out.endObject();}fn domainBool(object: std.json.ObjectMap, field: []const u8) !bool { return json.asBool(object.get(field)) orelse error.InvalidBenchmarkReductionDomain;}const Row = struct { key: []const u8, suite: []const u8, id: []const u8, source_line: usize, median_ns: u64, inner_sample_count: u32, allocation_attribution: AllocationAttribution, allocations: AllocationMaxima,};const Process = struct { source: ?Source, rows: []const Row,};const ProtocolState = enum { start, rows, end,};const Protocol = struct { state: ProtocolState = .start, suite: []const u8 = "", rows_expected: usize = 0, rows_remaining: usize = 0, groups: usize = 0,};pub fn capture( allocator: std.mem.Allocator, executions: []const Execution,) !Result { if (executions.len < 2) return .{ .not_applicable = .{ .reason = .fewer_than_two_executions, .process_count = executions.len, } }; if (executions.len > max_processes) return error.TooManyProcesses; var order_buffer: [max_processes]usize = undefined; const acquisition_order = try orderedExecutions(&order_buffer, executions); var statistics = try bench.StatisticsStorage.init(allocator, .{ .samples = max_inner_samples, .bootstrap_iterations = bootstrap_iterations, }); defer statistics.deinit(allocator); statistics.activate(); return try captureOrdered(allocator, &statistics, executions, acquisition_order);}fn captureOrdered( allocator: std.mem.Allocator, statistics: *bench.StatisticsStorage, executions: []const Execution, acquisition_order: []const usize,) !Result { const sources = try allocator.alloc(Source, executions.len); const processes = try allocator.alloc(Process, executions.len); for (acquisition_order, 0..) |execution_offset, process_index| { const execution = executions[execution_offset]; if (execution.exit_code != 0) return error.FailedMeasuredProcess; processes[process_index] = try loadProcess(allocator, statistics, execution); } const first_rows = processes[0].rows; if (first_rows.len == 0) return error.EmptyBenchmarkProtocol; try validateUniqueRows(first_rows); const sample_values = try allocator.alloc(u64, first_rows.len * executions.len); const inner_counts = try allocator.alloc(u32, first_rows.len * executions.len); const maxima = try allocator.alloc(AllocationMaxima, first_rows.len); for (first_rows, 0..) |row, index| maxima[index] = row.allocations; try collectProcesses( processes, first_rows, sources, sample_values, inner_counts, maxima, ); return .{ .complete = .{ .sources = sources, .benchmarks = try finishBenchmarks( allocator, statistics, first_rows, executions.len, sample_values, inner_counts, maxima, ), } };}fn collectProcesses( processes: []const Process, first_rows: []const Row, sources: []Source, sample_values: []u64, inner_counts: []u32, maxima: []AllocationMaxima,) !void { std.debug.assert(processes.len == sources.len); std.debug.assert(sample_values.len == first_rows.len * processes.len); for (processes, 0..) |process, process_index| { if (process.rows.len < first_rows.len) return error.MissingBenchmarkRow; if (process.rows.len > first_rows.len) return error.BenchmarkSetMismatch; try validateUniqueRows(process.rows); sources[process_index] = process.source orelse return error.MissingBenchmarkArtifact; for (process.rows) |row| { const benchmark_index = findRow(first_rows, row.key) orelse return error.BenchmarkSetMismatch; try validateShape(first_rows[benchmark_index], row); const sample_index = benchmark_index * processes.len + process_index; sample_values[sample_index] = row.median_ns; inner_counts[sample_index] = row.inner_sample_count; maxima[benchmark_index].observe(row.allocations); } }}fn finishBenchmarks( allocator: std.mem.Allocator, storage: *bench.StatisticsStorage, rows: []const Row, process_count: usize, sample_values: []const u64, inner_counts: []const u32, maxima: []const AllocationMaxima,) ![]const Benchmark { const result = try allocator.alloc(Benchmark, rows.len); for (rows, 0..) |row, index| { const start = index * process_count; const samples = sample_values[start..][0..process_count]; const counts = inner_counts[start..][0..process_count]; const stats = try bench.computeSampleStatsWithBootstrap(storage, samples, .{ .iterations = bootstrap_iterations, .seed = bootstrap_seed, .confidence_per_mille = bootstrap_confidence_per_mille, }); result[index] = .{ .key = row.key, .suite = row.suite, .id = row.id, .allocation_attribution = row.allocation_attribution, .sample_ns = samples, .inner_sample_count = counts, .statistics = statisticsFromBench(stats), .allocation_maxima = maxima[index], }; } return result;}fn statisticsFromBench(stats: bench.SampleStats) Statistics { const intervals = stats.confidence_intervals.?; std.debug.assert(intervals.iterations == bootstrap_iterations); std.debug.assert(intervals.seed == bootstrap_seed); return .{ .min_ns = stats.min_ns, .max_ns = stats.max_ns, .mean_ns = stats.mean_ns, .median_ns = stats.median_ns, .p75_ns = stats.p75_ns, .p95_ns = stats.p95_ns, .p99_ns = stats.p99_ns, .total_ns = stats.total_ns, .median_interval = intervals.median_ns, };}fn orderedExecutions( buffer: *[max_processes]usize, executions: []const Execution,) ![]const usize { if (executions.len > buffer.len) return error.TooManyProcesses; const result = buffer[0..executions.len]; for (result, 0..) |*slot, index| slot.* = index; var positioned = false; for (executions, 0..) |execution, index| { if (execution.index == 0 or execution.index > executions.len) { return error.InvalidExecutionOrder; } for (executions[0..index]) |previous| { if (previous.index == execution.index) return error.InvalidExecutionOrder; } positioned = positioned or execution.acquisition_position != null; } if (positioned) { for (executions) |execution| { if (execution.acquisition_position == null) return error.InvalidExecutionOrder; } } std.mem.sort(usize, result, executions, executionLessThan); for (result[1..], result[0 .. result.len - 1]) |right, left| { if (executionOrder(executions[right]) == executionOrder(executions[left])) { return error.InvalidExecutionOrder; } } return result;}fn executionLessThan(executions: []const Execution, left: usize, right: usize) bool { return executionOrder(executions[left]) < executionOrder(executions[right]);}fn executionOrder(execution: Execution) usize { return execution.acquisition_position orelse execution.index;}fn loadProcess( allocator: std.mem.Allocator, statistics: *bench.StatisticsStorage, execution: Execution,) !Process { if (execution.bench_jsonl.len == 0 or execution.structured.len == 0) { return error.MissingBenchmarkArtifact; } const bench_before = fingerprint.inspect(execution.bench_jsonl) catch |err| switch (err) { error.FileNotFound => return error.MissingBenchmarkArtifact, else => return err, }; const bench_text = try sys.fs.readFileAlloc( allocator, execution.bench_jsonl, ingest.model.max_source_bytes, ); defer allocator.free(bench_text); const rows = try parseProtocol(allocator, statistics, bench_text); if (rows.len == 0) return error.EmptyBenchmarkProtocol; const bench_after = try fingerprint.inspect(execution.bench_jsonl); if (!std.meta.eql(bench_before, bench_after)) { return error.ArtifactChangedDuringReduction; } const structured_before = fingerprint.inspect(execution.structured) catch |err| switch (err) { error.FileNotFound => return error.MissingBenchmarkArtifact, else => return err, }; const structured_text = try sys.fs.readFileAlloc( allocator, execution.structured, ingest.model.max_source_bytes, ); defer allocator.free(structured_text); try verifyStructuredRows( allocator, execution.structured_bench_path orelse execution.bench_jsonl, bench_text, structured_text, rows, ); const structured_after = try fingerprint.inspect(execution.structured); if (!std.meta.eql(structured_before, structured_after)) { return error.ArtifactChangedDuringReduction; } return .{ .source = .{ .execution_index = execution.index, .acquisition_position = execution.acquisition_position, .structured_bench_path = execution.structured_bench_path orelse execution.bench_jsonl, .bench_jsonl = .{ .path = execution.bench_jsonl, .identity = bench_after, }, .structured = .{ .path = execution.structured, .identity = structured_after, }, }, .rows = rows, };}const RawLine = struct { bytes: []const u8, number: usize,};const RawCursor = struct { lines: std.mem.SplitIterator(u8, .scalar), line_number: usize = 0, fn init(text: []const u8) RawCursor { return .{ .lines = std.mem.splitScalar(u8, text, '\n') }; } fn at(self: *RawCursor, target: usize) ?RawLine { if (target <= self.line_number) return null; while (self.lines.next()) |line| { self.line_number += 1; const trimmed = std.mem.trim(u8, line, " \t\r"); if (self.line_number == target and trimmed.len != 0) return .{ .bytes = trimmed, .number = self.line_number, }; if (self.line_number == target) return null; } return null; }};fn verifyStructuredRows( allocator: std.mem.Allocator, bench_path: []const u8, bench_text: []const u8, structured_text: []const u8, rows: []const Row,) !void { var raw = RawCursor.init(bench_text); var seen: [max_benchmarks]bool = @splat(false); var previous_line: usize = 0; var structured_lines = std.mem.splitScalar(u8, structured_text, '\n'); while (structured_lines.next()) |line| { const trimmed = std.mem.trim(u8, line, " \t\r"); if (trimmed.len == 0) continue; var parsed = std.json.parseFromSlice(std.json.Value, allocator, trimmed, .{}) catch return error.InvalidStructuredBenchmarkRows; defer parsed.deinit(); const object = json.object(parsed.value) catch return error.InvalidStructuredBenchmarkRows; try requireString(object, "schema", ingest.schema); const source = json.object(object.get("source") orelse return error.InvalidStructuredBenchmarkRows) catch return error.InvalidStructuredBenchmarkRows; const kind_name = json.string(source.get("kind")) orelse return error.InvalidStructuredBenchmarkRows; if (!std.mem.eql(u8, kind_name, "bench_jsonl")) continue; const source_path = json.string(source.get("path")) orelse return error.InvalidStructuredBenchmarkRows; const source_line_u64 = json.asU64(source.get("line")) orelse return error.InvalidStructuredBenchmarkRows; const source_line = std.math.cast(usize, source_line_u64) orelse return error.InvalidStructuredBenchmarkRows; if (!std.mem.eql(u8, source_path, bench_path) or source_line <= previous_line) { return error.StructuredBenchmarkMismatch; } previous_line = source_line; const row_value = object.get("row") orelse return error.InvalidStructuredBenchmarkRows; const row_index = findRowByLine(rows, source_line) orelse { if (isStrictBenchmarkValue(row_value)) { return error.StructuredBenchmarkMismatch; } continue; }; if (seen[row_index]) return error.StructuredBenchmarkMismatch; try verifyStructuredRow( allocator, row_value, raw.at(source_line), ); seen[row_index] = true; } for (seen[0..rows.len]) |matched| { if (!matched) return error.StructuredBenchmarkMismatch; }}fn verifyStructuredRow( allocator: std.mem.Allocator, structured_row: std.json.Value, raw_line: ?RawLine,) !void { const raw = raw_line orelse return error.StructuredBenchmarkMismatch; std.debug.assert(raw.number > 0); var parsed_raw = std.json.parseFromSlice( std.json.Value, allocator, raw.bytes, .{}, ) catch return error.InvalidBenchmarkProtocol; defer parsed_raw.deinit(); if (!jsonValuesEqual(parsed_raw.value, structured_row)) { return error.StructuredBenchmarkMismatch; }}fn findRowByLine(rows: []const Row, line_number: usize) ?usize { for (rows, 0..) |row, index| { if (row.source_line == line_number) return index; } return null;}fn isStrictBenchmarkValue(value: std.json.Value) bool { const object = json.object(value) catch return false; const event = json.string(object.get("event")) orelse return false; if (!std.mem.eql(u8, event, "bench_end")) return false; const classification = profiling_schema.classify(object, "bench_jsonl"); return classification.strict and classification.family == .timing;}fn jsonValuesEqual(left: std.json.Value, right: std.json.Value) bool { const Tag = std.meta.Tag(std.json.Value); if (@as(Tag, left) != @as(Tag, right)) return false; return switch (left) { .null => true, .bool => |value| value == right.bool, .integer => |value| value == right.integer, .float => |value| value == right.float, .number_string => |value| std.mem.eql(u8, value, right.number_string), .string => |value| std.mem.eql(u8, value, right.string), .array => |array| jsonArraysEqual(array, right.array), .object => |object| jsonObjectsEqual(object, right.object), };}fn jsonArraysEqual(left: std.json.Array, right: std.json.Array) bool { if (left.items.len != right.items.len) return false; for (left.items, right.items) |left_item, right_item| { if (!jsonValuesEqual(left_item, right_item)) return false; } return true;}fn jsonObjectsEqual(left: std.json.ObjectMap, right: std.json.ObjectMap) bool { if (left.count() != right.count()) return false; var iterator = left.iterator(); while (iterator.next()) |entry| { const right_value = right.get(entry.key_ptr.*) orelse return false; if (!jsonValuesEqual(entry.value_ptr.*, right_value)) return false; } return true;}fn parseProtocol( allocator: std.mem.Allocator, statistics: *bench.StatisticsStorage, text: []const u8,) ![]const Row { var result: std.ArrayList(Row) = .empty; var protocol = Protocol{}; var lines = std.mem.splitScalar(u8, text, '\n'); var line_number: usize = 0; while (lines.next()) |line| { line_number += 1; const trimmed = std.mem.trim(u8, line, " \t\r"); if (trimmed.len == 0) continue; var parsed = std.json.parseFromSlice(std.json.Value, allocator, trimmed, .{}) catch return error.InvalidBenchmarkProtocol; defer parsed.deinit(); const object = json.object(parsed.value) catch return error.InvalidBenchmarkProtocol; const event = json.string(object.get("event")) orelse return error.InvalidBenchmarkProtocol; if (std.mem.eql(u8, event, "run_start")) { try acceptRunStart(allocator, &protocol, object); } else if (std.mem.eql(u8, event, "bench_end")) { if (result.items.len >= max_benchmarks) return error.TooManyBenchmarks; try result.append(allocator, try acceptBenchmark( allocator, statistics, &protocol, object, line_number, )); } else if (std.mem.eql(u8, event, "run_end")) { try acceptRunEnd(&protocol, object); } else { return error.InvalidBenchmarkProtocol; } } if (protocol.state != .start or protocol.groups == 0) { if (protocol.state == .start and protocol.groups == 0) return &.{}; return error.InvalidBenchmarkProtocol; } return try result.toOwnedSlice(allocator);}fn acceptRunStart( allocator: std.mem.Allocator, protocol: *Protocol, object: std.json.ObjectMap,) !void { if (protocol.state != .start) return error.InvalidBenchmarkProtocol; try requireString(object, "protocol", "bench.suite/v1"); const suite = json.string(object.get("suite")) orelse return error.InvalidBenchmarkProtocol; if (suite.len == 0) return error.InvalidBenchmarkProtocol; const definitions = json.asU64(object.get("definitions")) orelse return error.InvalidBenchmarkProtocol; const benchmarks = json.asU64(object.get("benchmarks")) orelse return error.InvalidBenchmarkProtocol; if (benchmarks > definitions or benchmarks > max_benchmarks) { return error.InvalidBenchmarkProtocol; } protocol.suite = try allocator.dupe(u8, suite); protocol.rows_expected = @intCast(benchmarks); protocol.rows_remaining = @intCast(benchmarks); protocol.state = if (benchmarks == 0) .end else .rows;}fn acceptRunEnd(protocol: *Protocol, object: std.json.ObjectMap) !void { if (protocol.state != .end) return error.InvalidBenchmarkProtocol; const benches = json.asU64(object.get("benches")) orelse return error.InvalidBenchmarkProtocol; const errors = json.asU64(object.get("errors")) orelse return error.InvalidBenchmarkProtocol; if (benches != protocol.rows_expected) return error.InvalidBenchmarkProtocol; if (errors != 0) return error.FailedBenchmarkProtocol; protocol.groups = std.math.add(usize, protocol.groups, 1) catch return error.TooManyBenchmarks; protocol.state = .start; protocol.suite = ""; protocol.rows_expected = 0;}fn acceptBenchmark( allocator: std.mem.Allocator, statistics: *bench.StatisticsStorage, protocol: *Protocol, object: std.json.ObjectMap, source_line: usize,) !Row { if (protocol.state != .rows or protocol.rows_remaining == 0) { return error.InvalidBenchmarkProtocol; } try verifyBenchmarkShape(object, protocol.suite); const id = json.string(object.get("id")) orelse return error.UnverifiedBenchmarkRow; const name = json.string(object.get("name")) orelse return error.UnverifiedBenchmarkRow; if (id.len == 0 or !std.mem.eql(u8, id, name)) { return error.UnverifiedBenchmarkRow; } const samples = try parseSamples(allocator, object); defer allocator.free(samples); const sample_stats = try bench.computeSampleStatsWithBootstrap( statistics, samples, .{ .iterations = 0 }, ); try verifySampleStatistics(object, sample_stats); protocol.rows_remaining -= 1; if (protocol.rows_remaining == 0) protocol.state = .end; const suite = try allocator.dupe(u8, protocol.suite); const owned_id = try allocator.dupe(u8, id); return .{ .key = try key(allocator, suite, owned_id), .suite = suite, .id = owned_id, .source_line = source_line, .median_ns = sample_stats.median_ns, .inner_sample_count = @intCast(samples.len), .allocation_attribution = try parseAllocationAttribution(object), .allocations = try parseAllocationMaxima(object), };}fn verifyBenchmarkShape(object: std.json.ObjectMap, suite: []const u8) !void { const classification = profiling_schema.classify(object, "bench_jsonl"); if (classification.family != .timing or !classification.strict) { return error.UnverifiedBenchmarkRow; } inline for (.{ .{ "schema", profiling_schema.metric_schema }, .{ "event", "bench_end" }, .{ "family", "timing" }, .{ "metric", "duration_ns" }, .{ "unit", "ns" }, .{ "aggregation", "sample_distribution" }, .{ "suite", suite }, .{ "path", suite }, }) |expected| try requireString(object, expected[0], expected[1]); try verifyAgentEvidence(object); try verifySampleSequence(object);}fn verifyAgentEvidence(object: std.json.ObjectMap) !void { const evidence = json.object(object.get("agent_evidence") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; inline for (.{ .{ "schema", "tiny.profile-evidence/v1" }, .{ "primary_user", "agent" }, .{ "runner", "lib.bench" }, .{ "decision_state", "distribution_measurement" }, }) |expected| try requireString(evidence, expected[0], expected[1]); const bias = json.object(evidence.get("bias_repetition") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; try requireString(bias, "process", "in_process_samples");}fn verifySampleSequence(object: std.json.ObjectMap) !void { const sequence = json.object(object.get("sample_sequence") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; try requireString(sequence, "order", "measured_acquisition_order"); try requireString(sequence, "pairing", "same_index"); try requireString(sequence, "timestamps", "not_recorded"); if (json.asU64(sequence.get("index_origin")) != 0) { return error.UnverifiedBenchmarkRow; } const paired = json.array(sequence.get("paired_fields") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; if (paired.items.len != 2 or !std.mem.eql(u8, json.string(paired.items[0]) orelse "", "sample_ns") or !std.mem.eql(u8, json.string(paired.items[1]) orelse "", "sample_total_ns")) { return error.UnverifiedBenchmarkRow; }}fn parseSamples( allocator: std.mem.Allocator, object: std.json.ObjectMap,) ![]const u64 { const values = json.array(object.get("sample_ns") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; const totals = json.array(object.get("sample_total_ns") orelse return error.UnverifiedBenchmarkRow) catch return error.UnverifiedBenchmarkRow; if (values.items.len == 0) return error.UnverifiedBenchmarkRow; if (values.items.len > max_inner_samples) return error.TooManyInnerSamples; if (totals.items.len != values.items.len or json.asU64(object.get("samples")) != values.items.len) { return error.UnverifiedBenchmarkRow; } const evals = json.asU64(object.get("evals")) orelse return error.UnverifiedBenchmarkRow; if (evals == 0 or evals > std.math.maxInt(u32)) { return error.UnverifiedBenchmarkRow; } const result = try allocator.alloc(u64, values.items.len); for (values.items, totals.items, 0..) |value, total, index| { result[index] = json.asU64(value) orelse return error.UnverifiedBenchmarkRow; const total_ns = json.asU64(total) orelse return error.UnverifiedBenchmarkRow; if (total_ns / evals != result[index]) { return error.UnverifiedBenchmarkRow; } } return result;}fn verifySampleStatistics( object: std.json.ObjectMap, stats: bench.SampleStats,) !void { inline for (.{ .{ "min_ns", stats.min_ns }, .{ "max_ns", stats.max_ns }, .{ "median_ns", stats.median_ns }, .{ "p75_ns", stats.p75_ns }, .{ "p95_ns", stats.p95_ns }, .{ "p99_ns", stats.p99_ns }, .{ "total_ns", stats.total_ns }, }) |expected| { if (json.asU64(object.get(expected[0])) != expected[1]) { return error.UnverifiedBenchmarkRow; } }}fn parseAllocationAttribution( object: std.json.ObjectMap,) !AllocationAttribution { const name = json.string(object.get("allocation_attribution")) orelse return error.UnverifiedBenchmarkRow; return std.meta.stringToEnum(AllocationAttribution, name) orelse error.UnverifiedBenchmarkRow;}fn parseAllocationMaxima(object: std.json.ObjectMap) !AllocationMaxima { const result = AllocationMaxima{ .alloc_count = try optionalU64(object, "alloc_count"), .free_count = try optionalU64(object, "free_count"), .alloc_bytes = try optionalU64(object, "alloc_bytes"), .alloc_count_per_eval = try optionalU64(object, "alloc_count_per_eval"), .free_count_per_eval = try optionalU64(object, "free_count_per_eval"), .alloc_bytes_per_eval = try optionalU64(object, "alloc_bytes_per_eval"), }; const attribution = try parseAllocationAttribution(object); inline for (@typeInfo(AllocationMaxima).@"struct".field_names) |field_name| { const value = @field(result, field_name); if ((attribution == .none) != (value == null)) { return error.UnverifiedBenchmarkRow; } } return result;}fn optionalU64(object: std.json.ObjectMap, field: []const u8) !?u64 { const value = object.get(field) orelse return error.UnverifiedBenchmarkRow; if (value == .null) return null; return json.asU64(value) orelse error.UnverifiedBenchmarkRow;}fn requireString( object: std.json.ObjectMap, field: []const u8, expected: []const u8,) !void { const actual = json.string(object.get(field)) orelse return error.UnverifiedBenchmarkRow; if (!std.mem.eql(u8, actual, expected)) return error.UnverifiedBenchmarkRow;}fn key( allocator: std.mem.Allocator, suite: []const u8, id: []const u8,) ![]const u8 { return try std.fmt.allocPrint( allocator, "{d}:{s}{d}:{s}", .{ suite.len, suite, id.len, id }, );}fn validateUniqueRows(rows: []const Row) !void { if (rows.len > max_benchmarks) return error.TooManyBenchmarks; for (rows, 0..) |row, index| { for (rows[0..index]) |previous| { if (std.mem.eql(u8, row.key, previous.key)) { return error.DuplicateBenchmarkRow; } } }}fn findRow(rows: []const Row, key_value: []const u8) ?usize { for (rows, 0..) |row, index| { if (std.mem.eql(u8, row.key, key_value)) return index; } return null;}fn validateShape(expected: Row, actual: Row) !void { if (!std.mem.eql(u8, expected.suite, actual.suite) or !std.mem.eql(u8, expected.id, actual.id) or expected.allocation_attribution != actual.allocation_attribution) { return error.BenchmarkShapeMismatch; }}fn maxOptional(left: ?u64, right: ?u64) ?u64 { const left_value = left orelse return right; const right_value = right orelse return left; return @max(left_value, right_value);}pub fn parse( allocator: std.mem.Allocator, value: std.json.Value,) !Result { const object = json.object(value) catch return error.InvalidBenchmarkReduction; try expectReductionString(object, "schema", schema); const state = json.string(object.get("state")) orelse return error.InvalidBenchmarkReduction; const process_count = try reductionUsize(object, "process_count"); if (process_count > max_processes) return error.InvalidBenchmarkReduction; if (std.mem.eql(u8, state, "not_applicable")) { const reason_name = try reductionString(object, "reason"); const reason = std.meta.stringToEnum( NotApplicableReason, reason_name, ) orelse return error.InvalidBenchmarkReduction; if (reason == .fewer_than_two_executions and process_count >= 2) { return error.InvalidBenchmarkReduction; } return .{ .not_applicable = .{ .reason = reason, .process_count = process_count, } }; } if (!std.mem.eql(u8, state, "complete") or process_count < 2) { return error.InvalidBenchmarkReduction; } try validateReductionMetadata(object); return .{ .complete = try parseComplete( allocator, object, process_count, ) };}fn validateReductionMetadata(object: std.json.ObjectMap) !void { try expectReductionString( object, "method", "median_of_successful_process_medians", ); const sequence = try reductionObject(object, "sample_sequence"); try expectReductionString( sequence, "order", "measured_process_acquisition_order", ); try expectReductionString( sequence, "value", "per_process_lib_bench_median_ns", ); if (json.asU64(sequence.get("index_origin")) != 0) { return error.InvalidBenchmarkReduction; } try validateBootstrapMetadata(object); try validateSemanticMetadata(object);}fn validateBootstrapMetadata(object: std.json.ObjectMap) !void { const bootstrap = try reductionObject(object, "bootstrap"); try expectReductionString(bootstrap, "method", "percentile_bootstrap"); if (json.asU64(bootstrap.get("confidence_per_mille")) != bootstrap_confidence_per_mille or json.asU64(bootstrap.get("iterations")) != bootstrap_iterations or json.asU64(bootstrap.get("seed")) != bootstrap_seed) { return error.InvalidBenchmarkReduction; }}fn validateSemanticMetadata(object: std.json.ObjectMap) !void { const semantic = try reductionObject(object, "semantic_verification"); try expectReductionString(semantic, "process_exit", "zero"); try expectReductionString(semantic, "runner", "lib.bench"); try expectReductionString( semantic, "inner_median", "recomputed_with_lib_bench", ); try expectReductionString( semantic, "structured_wrapper", "exact_bench_jsonl_rows", );}fn parseComplete( allocator: std.mem.Allocator, object: std.json.ObjectMap, process_count: usize,) !Complete { const sources = try parseSources(allocator, object, process_count); const values = json.array(object.get("benchmarks") orelse return error.InvalidBenchmarkReduction) catch return error.InvalidBenchmarkReduction; if (values.items.len == 0 or values.items.len > max_benchmarks) { return error.InvalidBenchmarkReduction; } var storage = try bench.StatisticsStorage.init(allocator, .{ .samples = max_processes, .bootstrap_iterations = bootstrap_iterations, }); defer storage.deinit(allocator); storage.activate(); const benchmarks = try allocator.alloc(Benchmark, values.items.len); for (values.items, 0..) |item, index| { benchmarks[index] = try parseBenchmark( allocator, &storage, item, process_count, ); for (benchmarks[0..index]) |previous| { if (std.mem.eql(u8, previous.key, benchmarks[index].key)) { return error.InvalidBenchmarkReduction; } } } return .{ .sources = sources, .benchmarks = benchmarks };}fn parseSources( allocator: std.mem.Allocator, object: std.json.ObjectMap, process_count: usize,) ![]const Source { const values = json.array(object.get("sources") orelse return error.InvalidBenchmarkReduction) catch return error.InvalidBenchmarkReduction; if (values.items.len != process_count) { return error.InvalidBenchmarkReduction; } const result = try allocator.alloc(Source, values.items.len); for (values.items, 0..) |item, index| { const source = json.object(item) catch return error.InvalidBenchmarkReduction; result[index] = .{ .execution_index = try reductionUsize(source, "execution_index"), .acquisition_position = try reductionOptionalUsize( source, "acquisition_position", ), .structured_bench_path = try reductionString( source, "structured_bench_path", ), .bench_jsonl = try parseArtifact(source, "bench_jsonl"), .structured = try parseArtifact(source, "structured"), }; } try validateParsedSources(result); return result;}fn validateParsedSources(sources: []const Source) !void { var positioned = false; for (sources, 0..) |source, index| { if (source.execution_index == 0 or source.execution_index > sources.len) { return error.InvalidBenchmarkReduction; } if (source.structured_bench_path.len == 0) { return error.InvalidBenchmarkReduction; } for (sources[0..index]) |previous| { if (source.execution_index == previous.execution_index) { return error.InvalidBenchmarkReduction; } } positioned = positioned or source.acquisition_position != null; } for (sources, 0..) |source, index| { if (positioned) { const position = source.acquisition_position orelse return error.InvalidBenchmarkReduction; if (position == 0 or (index != 0 and position <= sources[index - 1].acquisition_position.?)) { return error.InvalidBenchmarkReduction; } } else if (source.execution_index != index + 1) { return error.InvalidBenchmarkReduction; } }}fn parseArtifact( object: std.json.ObjectMap, field: []const u8,) !Artifact { const value = try reductionObject(object, field); const path = json.string(value.get("path")) orelse return error.InvalidBenchmarkReduction; if (path.len == 0) return error.InvalidBenchmarkReduction; const digest_text = json.string(value.get("sha256")) orelse return error.InvalidBenchmarkReduction; return .{ .path = path, .identity = .{ .bytes = json.asU64(value.get("bytes")) orelse return error.InvalidBenchmarkReduction, .sha256 = try parseDigest(digest_text), }, };}fn parseDigest(value: []const u8) !fingerprint.Digest { if (value.len != @sizeOf(fingerprint.Digest) * 2) { return error.InvalidBenchmarkReduction; } var result: fingerprint.Digest = undefined; _ = std.fmt.hexToBytes(&result, value) catch return error.InvalidBenchmarkReduction; return result;}fn parseBenchmark( allocator: std.mem.Allocator, storage: *bench.StatisticsStorage, value: std.json.Value, process_count: usize,) !Benchmark { const object = json.object(value) catch return error.InvalidBenchmarkReduction; const key_value = try reductionString(object, "key"); const suite = try reductionString(object, "suite"); const id = try reductionString(object, "id"); if (key_value.len == 0 or suite.len == 0 or id.len == 0) { return error.InvalidBenchmarkReduction; } const computed_key = try key(allocator, suite, id); if (!std.mem.eql(u8, key_value, computed_key)) { return error.InvalidBenchmarkReduction; } const attribution_name = try reductionString( object, "allocation_attribution", ); const attribution = std.meta.stringToEnum( AllocationAttribution, attribution_name, ) orelse return error.InvalidBenchmarkReduction; const samples = try parseU64s(allocator, object, "sample_ns", process_count); const counts = try parseU32s( allocator, object, "inner_sample_count", process_count, ); const recorded_stats = try parseStatistics(object); try verifyOuterStatistics(storage, samples, recorded_stats); const maxima = try parseReductionMaxima(object, attribution); return .{ .key = key_value, .suite = suite, .id = id, .allocation_attribution = attribution, .sample_ns = samples, .inner_sample_count = counts, .statistics = recorded_stats, .allocation_maxima = maxima, };}fn parseU64s( allocator: std.mem.Allocator, object: std.json.ObjectMap, field: []const u8, expected_count: usize,) ![]const u64 { const values = json.array(object.get(field) orelse return error.InvalidBenchmarkReduction) catch return error.InvalidBenchmarkReduction; if (values.items.len != expected_count) { return error.InvalidBenchmarkReduction; } const result = try allocator.alloc(u64, values.items.len); for (values.items, result) |value, *slot| { slot.* = json.asU64(value) orelse return error.InvalidBenchmarkReduction; } return result;}fn parseU32s( allocator: std.mem.Allocator, object: std.json.ObjectMap, field: []const u8, expected_count: usize,) ![]const u32 { const values = json.array(object.get(field) orelse return error.InvalidBenchmarkReduction) catch return error.InvalidBenchmarkReduction; if (values.items.len != expected_count) { return error.InvalidBenchmarkReduction; } const result = try allocator.alloc(u32, values.items.len); for (values.items, result) |value, *slot| { const count = json.asU64(value) orelse return error.InvalidBenchmarkReduction; if (count == 0 or count > max_inner_samples) { return error.InvalidBenchmarkReduction; } slot.* = @intCast(count); } return result;}fn parseStatistics(object: std.json.ObjectMap) !Statistics { const stats = try reductionObject(object, "statistics"); const interval = try reductionObject(stats, "median_interval_95"); const mean = json.asF64(stats.get("mean_ns")) orelse return error.InvalidBenchmarkReduction; const low = json.asF64(interval.get("low_ns")) orelse return error.InvalidBenchmarkReduction; const high = json.asF64(interval.get("high_ns")) orelse return error.InvalidBenchmarkReduction; if (!std.math.isFinite(mean) or !std.math.isFinite(low) or !std.math.isFinite(high) or mean < 0 or low < 0 or high < low) { return error.InvalidBenchmarkReduction; } return .{ .min_ns = try reductionU64(stats, "min_ns"), .max_ns = try reductionU64(stats, "max_ns"), .mean_ns = mean, .median_ns = try reductionU64(stats, "median_ns"), .p75_ns = try reductionU64(stats, "p75_ns"), .p95_ns = try reductionU64(stats, "p95_ns"), .p99_ns = try reductionU64(stats, "p99_ns"), .total_ns = try reductionU64(stats, "total_ns"), .median_interval = .{ .low_ns = low, .high_ns = high }, };}fn verifyOuterStatistics( storage: *bench.StatisticsStorage, samples: []const u64, recorded: Statistics,) !void { const computed = try bench.computeSampleStatsWithBootstrap(storage, samples, .{ .iterations = bootstrap_iterations, .seed = bootstrap_seed, .confidence_per_mille = bootstrap_confidence_per_mille, }); if (!statisticsEqual(recorded, statisticsFromBench(computed))) { return error.InvalidBenchmarkReduction; }}fn statisticsEqual(left: Statistics, right: Statistics) bool { return left.min_ns == right.min_ns and left.max_ns == right.max_ns and left.mean_ns == right.mean_ns and left.median_ns == right.median_ns and left.p75_ns == right.p75_ns and left.p95_ns == right.p95_ns and left.p99_ns == right.p99_ns and left.total_ns == right.total_ns and left.median_interval.low_ns == right.median_interval.low_ns and left.median_interval.high_ns == right.median_interval.high_ns;}fn parseReductionMaxima( object: std.json.ObjectMap, attribution: AllocationAttribution,) !AllocationMaxima { const values = try reductionObject(object, "allocation_maxima"); const result = AllocationMaxima{ .alloc_count = try reductionOptionalU64(values, "alloc_count"), .free_count = try reductionOptionalU64(values, "free_count"), .alloc_bytes = try reductionOptionalU64(values, "alloc_bytes"), .alloc_count_per_eval = try reductionOptionalU64( values, "alloc_count_per_eval", ), .free_count_per_eval = try reductionOptionalU64( values, "free_count_per_eval", ), .alloc_bytes_per_eval = try reductionOptionalU64( values, "alloc_bytes_per_eval", ), }; inline for (@typeInfo(AllocationMaxima).@"struct".field_names) |field_name| { if ((attribution == .none) != (@field(result, field_name) == null)) { return error.InvalidBenchmarkReduction; } } return result;}fn reductionObject( object: std.json.ObjectMap, field: []const u8,) !std.json.ObjectMap { return json.object(object.get(field) orelse return error.InvalidBenchmarkReduction) catch return error.InvalidBenchmarkReduction;}fn reductionString( object: std.json.ObjectMap, field: []const u8,) ![]const u8 { return json.string(object.get(field)) orelse error.InvalidBenchmarkReduction;}fn expectReductionString( object: std.json.ObjectMap, field: []const u8, expected: []const u8,) !void { const actual = try reductionString(object, field); if (!std.mem.eql(u8, actual, expected)) { return error.InvalidBenchmarkReduction; }}fn reductionU64(object: std.json.ObjectMap, field: []const u8) !u64 { return json.asU64(object.get(field)) orelse error.InvalidBenchmarkReduction;}fn reductionUsize(object: std.json.ObjectMap, field: []const u8) !usize { const value = try reductionU64(object, field); return std.math.cast(usize, value) orelse error.InvalidBenchmarkReduction;}fn reductionOptionalUsize( object: std.json.ObjectMap, field: []const u8,) !?usize { const value = object.get(field) orelse return error.InvalidBenchmarkReduction; if (value == .null) return null; const integer = json.asU64(value) orelse return error.InvalidBenchmarkReduction; return std.math.cast(usize, integer) orelse error.InvalidBenchmarkReduction;}fn reductionOptionalU64( object: std.json.ObjectMap, field: []const u8,) !?u64 { const value = object.get(field) orelse return error.InvalidBenchmarkReduction; if (value == .null) return null; return json.asU64(value) orelse error.InvalidBenchmarkReduction;}pub fn relocate( allocator: std.mem.Allocator, result: *Result, recorded_root: ?[]const u8, actual_root: []const u8,) !void { switch (result.*) { .not_applicable => {}, .complete => |*complete| { const sources = try allocator.dupe(Source, complete.sources); for (sources) |*source| { source.bench_jsonl.path = try relocatedPath( allocator, source.bench_jsonl.path, recorded_root, actual_root, ); source.structured.path = try relocatedPath( allocator, source.structured.path, recorded_root, actual_root, ); } complete.sources = sources; }, }}fn relocatedPath( allocator: std.mem.Allocator, path: []const u8, recorded_root: ?[]const u8, actual_root: []const u8,) ![]const u8 { const from = recorded_root orelse return path; if (std.mem.eql(u8, from, actual_root) or !pathHasPrefix(path, from)) return path; return try std.fmt.allocPrint( allocator, "{s}{s}", .{ actual_root, path[from.len..] }, );}fn pathHasPrefix(path: []const u8, prefix: []const u8) bool { if (prefix.len == 0 or !std.mem.startsWith(u8, path, prefix)) return false; if (path.len == prefix.len) return true; return path[prefix.len] == std.fs.path.sep;}pub fn verify( allocator: std.mem.Allocator, recorded: Result, executions: []const Execution, direct_benchmark_domain: bool,) !void { if (!direct_benchmark_domain) { const outside = switch (recorded) { .complete => return error.ReductionDomainMismatch, .not_applicable => |value| value, }; if (outside.reason != .outside_direct_benchmark_domain or outside.process_count != executions.len) { return error.ReductionDomainMismatch; } return; } if (recorded == .not_applicable and recorded.not_applicable.reason == .outside_direct_benchmark_domain) { return error.ReductionDomainMismatch; } var arena_state = std.heap.ArenaAllocator.init(allocator); defer arena_state.deinit(); const verification_executions = try verificationExecutions( arena_state.allocator(), recorded, executions, ); const current = try capture(arena_state.allocator(), verification_executions); switch (recorded) { .not_applicable => |left| switch (current) { .not_applicable => |right| { if (!std.meta.eql(left, right)) return error.ReductionMismatch; }, .complete => return error.ReductionMismatch, }, .complete => |left| switch (current) { .not_applicable => return error.ReductionMismatch, .complete => |right| try verifyComplete(left, right), }, }}fn verificationExecutions( allocator: std.mem.Allocator, recorded: Result, executions: []const Execution,) ![]const Execution { const complete = switch (recorded) { .not_applicable => return executions, .complete => |value| value, }; if (complete.sources.len != executions.len) return error.ReductionMismatch; const result = try allocator.dupe(Execution, executions); for (result) |*execution| { const source = findSource(complete.sources, execution.index) orelse return error.ReductionMismatch; execution.structured_bench_path = source.structured_bench_path; } return result;}fn findSource(sources: []const Source, execution_index: usize) ?Source { for (sources) |source| { if (source.execution_index == execution_index) return source; } return null;}fn verifyComplete(recorded: Complete, current: Complete) !void { if (recorded.sources.len != current.sources.len or recorded.benchmarks.len != current.benchmarks.len) { return error.ReductionMismatch; } for (recorded.sources, current.sources) |left, right| { if (left.execution_index != right.execution_index or left.acquisition_position != right.acquisition_position or !std.mem.eql( u8, left.structured_bench_path, right.structured_bench_path, ) or !std.mem.eql(u8, left.bench_jsonl.path, right.bench_jsonl.path) or !std.mem.eql(u8, left.structured.path, right.structured.path)) { return error.ReductionMismatch; } if (!std.meta.eql(left.bench_jsonl.identity, right.bench_jsonl.identity) or !std.meta.eql(left.structured.identity, right.structured.identity)) { return error.ArtifactDigestMismatch; } } for (recorded.benchmarks, current.benchmarks) |left, right| { if (!benchmarkEqual(left, right)) return error.ReductionMismatch; }}fn benchmarkEqual(left: Benchmark, right: Benchmark) bool { return std.mem.eql(u8, left.key, right.key) and std.mem.eql(u8, left.suite, right.suite) and std.mem.eql(u8, left.id, right.id) and left.allocation_attribution == right.allocation_attribution and std.mem.eql(u64, left.sample_ns, right.sample_ns) and std.mem.eql(u32, left.inner_sample_count, right.inner_sample_count) and statisticsEqual(left.statistics, right.statistics) and std.meta.eql(left.allocation_maxima, right.allocation_maxima);}pub fn writeJson(out: *pretty_json.Writer, result: Result) !void { try validateResultForWrite(result); try out.beginObject(); try out.objectField("schema"); try out.write(schema); try out.objectField("state"); try out.write(result.stateName()); try out.objectField("process_count"); try out.write(result.processCount()); switch (result) { .not_applicable => |value| { try out.objectField("reason"); try out.write(@tagName(value.reason)); }, .complete => |value| try writeComplete(out, value), } try out.endObject();}fn validateResultForWrite(result: Result) !void { if (result.processCount() > max_processes) { return error.InvalidBenchmarkReduction; } switch (result) { .not_applicable => |value| { if (value.reason == .fewer_than_two_executions and value.process_count >= 2) { return error.InvalidBenchmarkReduction; } }, .complete => |value| { if (value.sources.len < 2 or value.benchmarks.len == 0 or value.benchmarks.len > max_benchmarks) { return error.InvalidBenchmarkReduction; } try validateParsedSources(value.sources); for (value.benchmarks) |benchmark_value| { if (benchmark_value.key.len == 0 or benchmark_value.suite.len == 0 or benchmark_value.id.len == 0 or benchmark_value.sample_ns.len != value.sources.len or benchmark_value.inner_sample_count.len != value.sources.len) { return error.InvalidBenchmarkReduction; } for (benchmark_value.inner_sample_count) |count| { if (count == 0 or count > max_inner_samples) { return error.InvalidBenchmarkReduction; } } } }, }}fn writeComplete(out: *pretty_json.Writer, value: Complete) !void { try out.objectField("method"); try out.write("median_of_successful_process_medians"); try out.objectField("sample_sequence"); try writeSampleSequenceJson(out); try out.objectField("bootstrap"); try writeBootstrapJson(out); try out.objectField("semantic_verification"); try writeSemanticVerificationJson(out); try out.objectField("sources"); try out.beginArray(); for (value.sources) |source| try writeSourceJson(out, source); try out.endArray(); try out.objectField("benchmarks"); try out.beginArray(); for (value.benchmarks) |benchmark_value| { try writeBenchmarkJson(out, benchmark_value); } try out.endArray();}fn writeSampleSequenceJson(out: *pretty_json.Writer) !void { try out.beginObject(); try out.objectField("order"); try out.write("measured_process_acquisition_order"); try out.objectField("index_origin"); try out.write(0); try out.objectField("value"); try out.write("per_process_lib_bench_median_ns"); try out.endObject();}fn writeBootstrapJson(out: *pretty_json.Writer) !void { try out.beginObject(); try out.objectField("method"); try out.write("percentile_bootstrap"); try out.objectField("confidence_per_mille"); try out.write(bootstrap_confidence_per_mille); try out.objectField("iterations"); try out.write(bootstrap_iterations); try out.objectField("seed"); try out.write(bootstrap_seed); try out.endObject();}fn writeSemanticVerificationJson(out: *pretty_json.Writer) !void { try out.beginObject(); try out.objectField("process_exit"); try out.write("zero"); try out.objectField("runner"); try out.write("lib.bench"); try out.objectField("inner_median"); try out.write("recomputed_with_lib_bench"); try out.objectField("structured_wrapper"); try out.write("exact_bench_jsonl_rows"); try out.endObject();}fn writeSourceJson(out: *pretty_json.Writer, source: Source) !void { try out.beginObject(); try out.objectField("execution_index"); try out.write(source.execution_index); try out.objectField("acquisition_position"); try out.write(source.acquisition_position); try out.objectField("structured_bench_path"); try out.write(source.structured_bench_path); try out.objectField("bench_jsonl"); try writeArtifactJson(out, source.bench_jsonl); try out.objectField("structured"); try writeArtifactJson(out, source.structured); try out.endObject();}fn writeArtifactJson(out: *pretty_json.Writer, artifact: Artifact) !void { const digest = artifact.identity.hex(); try out.beginObject(); try out.objectField("path"); try out.write(artifact.path); try out.objectField("bytes"); try out.write(artifact.identity.bytes); try out.objectField("sha256"); try out.write(digest[0..]); try out.endObject();}fn writeBenchmarkJson(out: *pretty_json.Writer, value: Benchmark) !void { try out.beginObject(); try out.objectField("key"); try out.write(value.key); try out.objectField("suite"); try out.write(value.suite); try out.objectField("id"); try out.write(value.id); try out.objectField("allocation_attribution"); try out.write(@tagName(value.allocation_attribution)); try out.objectField("sample_ns"); try writeU64s(out, value.sample_ns); try out.objectField("inner_sample_count"); try writeU32s(out, value.inner_sample_count); try out.objectField("statistics"); try writeStatisticsJson(out, value.statistics); try out.objectField("allocation_maxima"); try writeAllocationMaximaJson(out, value.allocation_maxima); try out.endObject();}fn writeStatisticsJson(out: *pretty_json.Writer, value: Statistics) !void { try out.beginObject(); try out.objectField("min_ns"); try out.write(value.min_ns); try out.objectField("max_ns"); try out.write(value.max_ns); try out.objectField("mean_ns"); try out.write(value.mean_ns); try out.objectField("median_ns"); try out.write(value.median_ns); try out.objectField("p75_ns"); try out.write(value.p75_ns); try out.objectField("p95_ns"); try out.write(value.p95_ns); try out.objectField("p99_ns"); try out.write(value.p99_ns); try out.objectField("total_ns"); try out.write(value.total_ns); try out.objectField("median_interval_95"); try out.beginObject(); try out.objectField("low_ns"); try out.write(value.median_interval.low_ns); try out.objectField("high_ns"); try out.write(value.median_interval.high_ns); try out.endObject(); try out.endObject();}fn writeAllocationMaximaJson( out: *pretty_json.Writer, value: AllocationMaxima,) !void { try out.beginObject(); inline for (@typeInfo(AllocationMaxima).@"struct".field_names) |field_name| { try out.objectField(field_name); try out.write(@field(value, field_name)); } try out.endObject();}fn writeU64s(out: *pretty_json.Writer, values: []const u64) !void { try out.beginArray(); for (values) |value| try out.write(value); try out.endArray();}fn writeU32s(out: *pretty_json.Writer, values: []const u32) !void { try out.beginArray(); for (values) |value| try out.write(value); try out.endArray();}const TestBenchmark = struct { id: []const u8, sample_ns: u64, sample_total_ns: ?u64 = null, evals: u32 = 1, allocation_attribution: AllocationAttribution = .none, allocation_value: u64 = 0, large_integer: ?u64 = null,};const TestGroup = struct { suite: []const u8, benchmarks: []const TestBenchmark,};fn testProtocol( allocator: std.mem.Allocator, groups: []const TestGroup,) ![]u8 { var output: std.Io.Writer.Allocating = .init(allocator); defer output.deinit(); for (groups) |group| { try writeTestRunStart(&output.writer, group); for (group.benchmarks) |benchmark_value| { try writeTestBenchmark(&output.writer, group.suite, benchmark_value); } try writeTestRunEnd(&output.writer, group.benchmarks.len); } return try output.toOwnedSlice();}fn writeTestRunStart(writer: *std.Io.Writer, group: TestGroup) !void { var out = pretty_json.Writer.init(writer, .minified); try out.beginObject(); try out.objectField("event"); try out.write("run_start"); try out.objectField("protocol"); try out.write("bench.suite/v1"); try out.objectField("suite"); try out.write(group.suite); try out.objectField("definitions"); try out.write(group.benchmarks.len); try out.objectField("benchmarks"); try out.write(group.benchmarks.len); try out.endObject(); try writer.writeByte('\n');}fn writeTestBenchmark( writer: *std.Io.Writer, suite: []const u8, value: TestBenchmark,) !void { var out = pretty_json.Writer.init(writer, .minified); try out.beginObject(); try writeTestBenchmarkIdentity(&out, suite, value.id); try writeTestBenchmarkSamples(&out, value); try writeTestBenchmarkEvidence(&out); try writeTestBenchmarkAllocations(&out, value); if (value.large_integer) |large_integer| { try out.objectField("large_integer"); try out.write(large_integer); } try out.endObject(); try writer.writeByte('\n');}fn writeTestBenchmarkIdentity( out: *pretty_json.Writer, suite: []const u8, id: []const u8,) !void { inline for (.{ .{ "schema", profiling_schema.metric_schema }, .{ "event", "bench_end" }, .{ "family", "timing" }, .{ "metric", "duration_ns" }, .{ "unit", "ns" }, .{ "aggregation", "sample_distribution" }, .{ "id", id }, .{ "path", suite }, .{ "name", id }, .{ "suite", suite }, }) |field| { try out.objectField(field[0]); try out.write(field[1]); }}fn writeTestBenchmarkSamples( out: *pretty_json.Writer, value: TestBenchmark,) !void { const total_ns = value.sample_total_ns orelse value.sample_ns * value.evals; try out.objectField("samples"); try out.write(1); try out.objectField("evals"); try out.write(value.evals); try out.objectField("sample_ns"); try writeU64s(out, &.{value.sample_ns}); try out.objectField("sample_total_ns"); try writeU64s(out, &.{total_ns}); try out.objectField("sample_sequence"); try writeTestInnerSequence(out); try writeTestPointStatistics(out, value.sample_ns);}fn writeTestInnerSequence(out: *pretty_json.Writer) !void { try out.beginObject(); try out.objectField("order"); try out.write("measured_acquisition_order"); try out.objectField("index_origin"); try out.write(0); try out.objectField("pairing"); try out.write("same_index"); try out.objectField("paired_fields"); try out.beginArray(); try out.write("sample_ns"); try out.write("sample_total_ns"); try out.endArray(); try out.objectField("timestamps"); try out.write("not_recorded"); try out.endObject();}fn writeTestPointStatistics(out: *pretty_json.Writer, value: u64) !void { try out.objectField("min_ns"); try out.write(value); try out.objectField("max_ns"); try out.write(value); try out.objectField("mean_ns"); try out.write(@as(f64, @floatFromInt(value))); try out.objectField("median_ns"); try out.write(value); try out.objectField("p75_ns"); try out.write(value); try out.objectField("p95_ns"); try out.write(value); try out.objectField("p99_ns"); try out.write(value); try out.objectField("total_ns"); try out.write(value);}fn writeTestBenchmarkEvidence(out: *pretty_json.Writer) !void { try out.objectField("agent_evidence"); try out.beginObject(); try out.objectField("schema"); try out.write("tiny.profile-evidence/v1"); try out.objectField("primary_user"); try out.write("agent"); try out.objectField("runner"); try out.write("lib.bench"); try out.objectField("decision_state"); try out.write("distribution_measurement"); try out.objectField("bias_repetition"); try out.beginObject(); try out.objectField("process"); try out.write("in_process_samples"); try out.endObject(); try out.endObject();}fn writeTestBenchmarkAllocations( out: *pretty_json.Writer, value: TestBenchmark,) !void { try out.objectField("allocation_attribution"); try out.write(@tagName(value.allocation_attribution)); const observed: ?u64 = if (value.allocation_attribution == .none) null else value.allocation_value; inline for (@typeInfo(AllocationMaxima).@"struct".field_names) |field_name| { try out.objectField(field_name); try out.write(observed); }}fn writeTestRunEnd(writer: *std.Io.Writer, benchmark_count: usize) !void { var out = pretty_json.Writer.init(writer, .minified); try out.beginObject(); try out.objectField("event"); try out.write("run_end"); try out.objectField("benches"); try out.write(benchmark_count); try out.objectField("errors"); try out.write(0); try out.endObject(); try writer.writeByte('\n');}fn testStructured( allocator: std.mem.Allocator, bench_path: []const u8, protocol: []const u8, include_envelopes: bool,) ![]u8 { var output: std.Io.Writer.Allocating = .init(allocator); defer output.deinit(); var lines = std.mem.splitScalar(u8, protocol, '\n'); var line_number: usize = 0; while (lines.next()) |line| { line_number += 1; const trimmed = std.mem.trim(u8, line, " \t\r"); if (trimmed.len == 0) continue; var parsed = try std.json.parseFromSlice( std.json.Value, allocator, trimmed, .{}, ); defer parsed.deinit(); if (!include_envelopes and !isStrictBenchmarkValue(parsed.value)) continue; try writeTestStructuredRow( &output.writer, bench_path, line_number, trimmed, ); } return try output.toOwnedSlice();}fn writeTestStructuredRow( writer: *std.Io.Writer, bench_path: []const u8, line_number: usize, raw: []const u8,) !void { var out = pretty_json.Writer.init(writer, .minified); try out.beginObject(); try out.objectField("schema"); try out.write(ingest.schema); try out.objectField("source"); try out.beginObject(); try out.objectField("kind"); try out.write("bench_jsonl"); try out.objectField("path"); try out.write(bench_path); try out.objectField("line"); try out.write(line_number); try out.endObject(); try out.objectField("row"); try out.raw(raw); try out.endObject(); try writer.writeByte('\n');}fn testRoot( allocator: std.mem.Allocator, temporary: *std.testing.TmpDir,) ![]const u8 { return try temporary.parent_dir.realPathFileAlloc( std.Options.debug_io, temporary.sub_path[0..], allocator, );}fn writeTestExecution( allocator: std.mem.Allocator, root: []const u8, index: usize, acquisition_position: ?usize, groups: []const TestGroup, include_envelopes: bool,) !Execution { const bench_name = try std.fmt.allocPrint(allocator, "bench-{d}.jsonl", .{index}); const structured_name = try std.fmt.allocPrint( allocator, "structured-{d}.jsonl", .{index}, ); const bench_path = try std.fs.path.join(allocator, &.{ root, bench_name }); const structured_path = try std.fs.path.join( allocator, &.{ root, structured_name }, ); const protocol = try testProtocol(allocator, groups); try sys.fs.writeFile(bench_path, protocol); try sys.fs.writeFile( structured_path, try testStructured( allocator, bench_path, protocol, include_envelopes, ), ); return .{ .index = index, .acquisition_position = acquisition_position, .exit_code = 0, .bench_jsonl = bench_path, .structured = structured_path, };}fn renderReduction( allocator: std.mem.Allocator, result: Result,) ![]u8 { var output: std.Io.Writer.Allocating = .init(allocator); defer output.deinit(); var out = pretty_json.Writer.init(&output.writer, .minified); try writeJson(&out, result); return try output.toOwnedSlice();}fn requireComplete(result: Result) !Complete { return switch (result) { .not_applicable => error.ExpectedCompleteReduction, .complete => |value| value, };}fn replaceTestFile( allocator: std.mem.Allocator, path: []const u8, needle: []const u8, replacement: []const u8,) !void { const original = try sys.fs.readFileAlloc( allocator, path, ingest.model.max_source_bytes, ); const changed = try std.mem.replaceOwned( u8, allocator, original, needle, replacement, ); if (std.mem.eql(u8, original, changed)) return error.TestReplacementMissing; try sys.fs.writeFile(path, changed);}fn writeTestPair( allocator: std.mem.Allocator, root: []const u8, first: []const TestGroup, second: []const TestGroup, include_envelopes: bool,) ![2]Execution { return .{ try writeTestExecution( allocator, root, 1, null, first, include_envelopes, ), try writeTestExecution( allocator, root, 2, null, second, include_envelopes, ), };}test "profiling reducer single execution is not applicable" { const executions = [_]Execution{.{ .index = 1, .acquisition_position = null, .exit_code = 0, .bench_jsonl = "missing", .structured = "missing", }}; const result = try capture(std.testing.allocator, &executions); try std.testing.expectEqual( NotApplicableReason.fewer_than_two_executions, result.not_applicable.reason, ); try std.testing.expectEqual(@as(usize, 1), result.processCount());}test "profiling reducer enforces declared domain state" { const executions = [_]Execution{ .{ .index = 1, .acquisition_position = null, .exit_code = 0, .bench_jsonl = "missing-one", .structured = "missing-one", }, .{ .index = 2, .acquisition_position = null, .exit_code = 0, .bench_jsonl = "missing-two", .structured = "missing-two", }, }; const outside = Result{ .not_applicable = .{ .reason = .outside_direct_benchmark_domain, .process_count = executions.len, } }; try verify(std.testing.allocator, outside, &executions, false); try std.testing.expectError( error.ReductionDomainMismatch, verify(std.testing.allocator, outside, &executions, true), ); const downgraded = Result{ .not_applicable = .{ .reason = .fewer_than_two_executions, .process_count = 0, } }; try std.testing.expectError( error.ReductionDomainMismatch, verify(std.testing.allocator, downgraded, &.{}, false), );}test "profiling reducer domain declaration excludes every profiled mode" { const ordinary = DomainDeclaration{ .benchmark_surface = true, .direct_execution = true, .host_profiler = false, .tracy = false, .causal = false, .allocation_trace = false, .capture_control = false, }; try std.testing.expect(directBenchmarkDomain(ordinary)); inline for (.{ "benchmark_surface", "direct_execution", }) |field_name| { var excluded = ordinary; @field(excluded, field_name) = false; try std.testing.expect(!directBenchmarkDomain(excluded)); } inline for (.{ "host_profiler", "tracy", "causal", "allocation_trace", "capture_control", }) |field_name| { var excluded = ordinary; @field(excluded, field_name) = true; try std.testing.expect(!directBenchmarkDomain(excluded)); }}test "profiling reducer captures parses and verifies two processes" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const first_rows = [_]TestBenchmark{.{ .id = "parse", .sample_ns = 10 }}; const second_rows = [_]TestBenchmark{.{ .id = "parse", .sample_ns = 20 }}; const first_groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &first_rows, }}; const second_groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &second_rows, }}; const executions = [_]Execution{ try writeTestExecution(allocator, root, 1, null, &first_groups, false), try writeTestExecution(allocator, root, 2, null, &second_groups, false), }; const result = try capture(allocator, &executions); const complete = try requireComplete(result); try std.testing.expectEqualSlices( u64, &.{ 10, 20 }, complete.benchmarks[0].sample_ns, ); const document = try std.json.parseFromSliceLeaky( std.json.Value, allocator, try renderReduction(allocator, result), .{}, ); const reparsed = try parse(allocator, document); try verify(allocator, reparsed, &executions, true); const downgraded = Result{ .not_applicable = .{ .reason = .outside_direct_benchmark_domain, .process_count = executions.len, } }; try std.testing.expectError( error.ReductionDomainMismatch, verify(allocator, downgraded, &executions, true), );}test "profiling reducer accepts the maximum process bound" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); var executions: [max_processes]Execution = undefined; for (&executions, 0..) |*execution, index| { const rows = [_]TestBenchmark{.{ .id = "maximum", .sample_ns = index + 1, }}; const groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &rows, }}; execution.* = try writeTestExecution( allocator, root, index + 1, null, &groups, false, ); } const complete = try requireComplete(try capture(allocator, &executions)); try std.testing.expectEqual(max_processes, complete.sources.len); try std.testing.expectEqual(max_processes, complete.benchmarks[0].sample_ns.len);}test "profiling reducer rejects one process beyond the bound" { var executions: [max_processes + 1]Execution = undefined; for (&executions, 0..) |*execution, index| execution.* = .{ .index = index + 1, .acquisition_position = null, .exit_code = 0, .bench_jsonl = "missing", .structured = "missing", }; try std.testing.expectError( error.TooManyProcesses, capture(std.testing.allocator, &executions), );}test "profiling reducer preserves measured acquisition order" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const first_rows = [_]TestBenchmark{.{ .id = "ordered", .sample_ns = 30 }}; const second_rows = [_]TestBenchmark{.{ .id = "ordered", .sample_ns = 10 }}; const third_rows = [_]TestBenchmark{.{ .id = "ordered", .sample_ns = 20 }}; const first_groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &first_rows }}; const second_groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &second_rows }}; const third_groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &third_rows }}; const executions = [_]Execution{ try writeTestExecution(allocator, root, 3, 4, &third_groups, false), try writeTestExecution(allocator, root, 1, 7, &first_groups, false), try writeTestExecution(allocator, root, 2, 1, &second_groups, false), }; const complete = try requireComplete(try capture(allocator, &executions)); try std.testing.expectEqualSlices( u64, &.{ 10, 20, 30 }, complete.benchmarks[0].sample_ns, ); try std.testing.expectEqual(@as(usize, 2), complete.sources[0].execution_index); try std.testing.expectEqual(@as(usize, 3), complete.sources[1].execution_index); try std.testing.expectEqual(@as(usize, 1), complete.sources[2].execution_index);}test "profiling reducer rejects failed missing and empty repeated processes" { var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const failed = [_]Execution{ .{ .index = 1, .acquisition_position = null, .exit_code = 9, .bench_jsonl = "missing", .structured = "missing", }, .{ .index = 2, .acquisition_position = null, .exit_code = 0, .bench_jsonl = "missing", .structured = "missing", }, }; try std.testing.expectError( error.FailedMeasuredProcess, capture(allocator, &failed), ); var missing = failed; missing[0].exit_code = 0; try std.testing.expectError( error.MissingBenchmarkArtifact, capture(allocator, &missing), ); var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); const root = try testRoot(allocator, &temporary); var empty: [2]Execution = undefined; for (&empty, 0..) |*execution, index| { const bench_path = try std.fs.path.join( allocator, &.{ root, try std.fmt.allocPrint(allocator, "empty-{d}", .{index}) }, ); const structured_path = try std.fs.path.join( allocator, &.{ root, try std.fmt.allocPrint(allocator, "empty-s-{d}", .{index}) }, ); try sys.fs.writeFile(bench_path, ""); try sys.fs.writeFile(structured_path, ""); execution.* = .{ .index = index + 1, .acquisition_position = null, .exit_code = 0, .bench_jsonl = bench_path, .structured = structured_path, }; } try std.testing.expectError( error.EmptyBenchmarkProtocol, capture(allocator, &empty), );}test "profiling reducer rejects missing duplicate and mismatched benchmark keys" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const two_rows = [_]TestBenchmark{ .{ .id = "a", .sample_ns = 10 }, .{ .id = "b", .sample_ns = 20 }, }; const one_row = [_]TestBenchmark{.{ .id = "a", .sample_ns = 11 }}; const first = [_]TestGroup{.{ .suite = "suite", .benchmarks = &two_rows }}; const missing_second = [_]TestGroup{.{ .suite = "suite", .benchmarks = &one_row, }}; const missing_pair = try writeTestPair( allocator, root, &first, &missing_second, false, ); try std.testing.expectError( error.MissingBenchmarkRow, capture(allocator, &missing_pair), ); const duplicate_rows = [_]TestBenchmark{ .{ .id = "a", .sample_ns = 10 }, .{ .id = "a", .sample_ns = 20 }, }; const duplicate_group = [_]TestGroup{.{ .suite = "duplicate", .benchmarks = &duplicate_rows, }}; const duplicate_pair = try writeTestPair( allocator, root, &duplicate_group, &duplicate_group, false, ); try std.testing.expectError( error.DuplicateBenchmarkRow, capture(allocator, &duplicate_pair), ); const other_row = [_]TestBenchmark{.{ .id = "c", .sample_ns = 11 }}; const other_group = [_]TestGroup{.{ .suite = "suite", .benchmarks = &other_row }}; const one_group = [_]TestGroup{.{ .suite = "suite", .benchmarks = &one_row }}; const mismatched_pair = try writeTestPair( allocator, root, &one_group, &other_group, false, ); try std.testing.expectError( error.BenchmarkSetMismatch, capture(allocator, &mismatched_pair), );}test "profiling reducer rejects benchmark shape changes" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const untracked = [_]TestBenchmark{.{ .id = "shape", .sample_ns = 10 }}; const tracked = [_]TestBenchmark{.{ .id = "shape", .sample_ns = 20, .allocation_attribution = .sample_call, .allocation_value = 2, }}; const first = [_]TestGroup{.{ .suite = "suite", .benchmarks = &untracked }}; const second = [_]TestGroup{.{ .suite = "suite", .benchmarks = &tracked }}; const executions = try writeTestPair(allocator, root, &first, &second, false); try std.testing.expectError( error.BenchmarkShapeMismatch, capture(allocator, &executions), );}test "profiling reducer matches source lines across multiple suite groups" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const first_a = [_]TestBenchmark{.{ .id = "a", .sample_ns = 10 }}; const first_b = [_]TestBenchmark{.{ .id = "b", .sample_ns = 30 }}; const second_a = [_]TestBenchmark{.{ .id = "a", .sample_ns = 20 }}; const second_b = [_]TestBenchmark{.{ .id = "b", .sample_ns = 40 }}; const first = [_]TestGroup{ .{ .suite = "one", .benchmarks = &first_a }, .{ .suite = "two", .benchmarks = &first_b }, }; const second = [_]TestGroup{ .{ .suite = "one", .benchmarks = &second_a }, .{ .suite = "two", .benchmarks = &second_b }, }; const executions = try writeTestPair(allocator, root, &first, &second, true); const complete = try requireComplete(try capture(allocator, &executions)); try std.testing.expectEqual(@as(usize, 2), complete.benchmarks.len); try std.testing.expectEqualSlices( u64, &.{ 10, 20 }, complete.benchmarks[0].sample_ns, ); try std.testing.expectEqualSlices( u64, &.{ 30, 40 }, complete.benchmarks[1].sample_ns, );}test "profiling reducer rejects structured row and source line mismatches" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const rows = [_]TestBenchmark{.{ .id = "wrapper", .sample_ns = 10 }}; const groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &rows }}; var executions = try writeTestPair(allocator, root, &groups, &groups, false); try replaceTestFile( allocator, executions[0].structured, "\"sample_ns\":[10]", "\"sample_ns\":[11]", ); try std.testing.expectError( error.StructuredBenchmarkMismatch, capture(allocator, &executions), ); executions = try writeTestPair(allocator, root, &groups, &groups, false); try replaceTestFile( allocator, executions[0].structured, "\"line\":2", "\"line\":3", ); try std.testing.expectError( error.StructuredBenchmarkMismatch, capture(allocator, &executions), ); executions = try writeTestPair(allocator, root, &groups, &groups, false); try sys.fs.writeFile(executions[0].structured, ""); try std.testing.expectError( error.StructuredBenchmarkMismatch, capture(allocator, &executions), );}test "profiling reducer compares structured numeric values without rounding" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const rows = [_]TestBenchmark{.{ .id = "large", .sample_ns = 10, .large_integer = 9_007_199_254_740_993, }}; const groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &rows }}; const executions = try writeTestPair(allocator, root, &groups, &groups, false); try replaceTestFile( allocator, executions[0].structured, "\"large_integer\":9007199254740993", "\"large_integer\":9007199254740992.0", ); try std.testing.expectError( error.StructuredBenchmarkMismatch, capture(allocator, &executions), );}test "profiling reducer rejects contradictory paired sample totals" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const bad_rows = [_]TestBenchmark{.{ .id = "pairing", .sample_ns = 10, .sample_total_ns = 22, .evals = 2, }}; const good_rows = [_]TestBenchmark{.{ .id = "pairing", .sample_ns = 10, .sample_total_ns = 20, .evals = 2, }}; const bad = [_]TestGroup{.{ .suite = "suite", .benchmarks = &bad_rows }}; const good = [_]TestGroup{.{ .suite = "suite", .benchmarks = &good_rows }}; const executions = try writeTestPair(allocator, root, &bad, &good, false); try std.testing.expectError( error.UnverifiedBenchmarkRow, capture(allocator, &executions), );}test "profiling reducer rejects protocol bench count mismatch" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const rows = [_]TestBenchmark{.{ .id = "protocol", .sample_ns = 10 }}; const groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &rows }}; const executions = try writeTestPair(allocator, root, &groups, &groups, false); try replaceTestFile( allocator, executions[0].bench_jsonl, "\"benches\":1", "\"benches\":2", ); try std.testing.expectError( error.InvalidBenchmarkProtocol, capture(allocator, &executions), );}test "profiling reducer detects artifact mutation during analysis verification" { var temporary = std.testing.tmpDir(.{}); defer temporary.cleanup(); var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator); defer arena_state.deinit(); const allocator = arena_state.allocator(); const root = try testRoot(allocator, &temporary); const rows = [_]TestBenchmark{.{ .id = "digest", .sample_ns = 10 }}; const groups = [_]TestGroup{.{ .suite = "suite", .benchmarks = &rows }}; const executions = try writeTestPair(allocator, root, &groups, &groups, false); const recorded = try capture(allocator, &executions); try sys.fs.appendFile(executions[1].structured, &.{" "}); try std.testing.expectError( error.ArtifactDigestMismatch, verify(allocator, recorded, &executions, true), );}test "profiling reducer serializer rejects impossible receipt states" { const invalid = Result{ .not_applicable = .{ .reason = .fewer_than_two_executions, .process_count = 2, } }; var output: std.Io.Writer.Allocating = .init(std.testing.allocator); defer output.deinit(); var out = pretty_json.Writer.init(&output.writer, .minified); try std.testing.expectError( error.InvalidBenchmarkReduction, writeJson(&out, invalid), );}Source: src/profiling/root.zig:50
zig
pub const reduction = @import("reduction.zig");Complete caller list for reduction.capture
15 direct callers.
src.profiling.reduction.test_profiling_reducer_accepts_the_maximum_process_bound[function] — test; no exact target atsrc/profiling/reduction.zig:2262in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_captures_parses_and_verifies_two_processes[function] — test; no exact target atsrc/profiling/reduction.zig:2216in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_compares_structured_numeric_values_without_rounding[function] — test; no exact target atsrc/profiling/reduction.zig:2560in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_detects_artifact_mutation_during_analysis_verification[function] — test; no exact target atsrc/profiling/reduction.zig:2636in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_matches_source_lines_across_multiple_suite_groups[function] — test; no exact target atsrc/profiling/reduction.zig:2485in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_preserves_measured_acquisition_order[function] — test; no exact target atsrc/profiling/reduction.zig:2308in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_benchmark_shape_changes[function] — test; no exact target atsrc/profiling/reduction.zig:2462in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_contradictory_paired_sample_totals[function] — test; no exact target atsrc/profiling/reduction.zig:2586in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_failed_missing_and_empty_repeated_processes[function] — test; no exact target atsrc/profiling/reduction.zig:2337in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_missing_duplicate_and_mismatched_benchmark_keys[function] — test; no exact target atsrc/profiling/reduction.zig:2397in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_one_process_beyond_the_bound[function] — test; no exact target atsrc/profiling/reduction.zig:2293in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_protocol_bench_count_mismatch[function] — test; no exact target atsrc/profiling/reduction.zig:2614in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_rejects_structured_row_and_source_line_mismatches[function] — test; no exact target atsrc/profiling/reduction.zig:2519in nearest public ownertiny.profiling.reductionsrc.profiling.reduction.test_profiling_reducer_single_execution_is_not_applicable[function] — test; no exact target atsrc/profiling/reduction.zig:2132in nearest public ownertiny.profiling.reductiontiny.profiling.reduction.verify[function] atsrc/profiling/reduction.zig:1438
Audit
| Definitions | 30 |
|---|---|
| Public names | 30 |
| Members | 54 |
| Version | 26.7.0 |
| Revision | daab053ee433 |