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Merge pull request #224 from perillo/improve-build-more

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build: enable full parallelism when -Dhealed is set
This commit is contained in:
Chris Boesch 2023-04-12 15:27:48 +02:00 committed by GitHub
commit 1ccc86edd6
2 changed files with 338 additions and 71 deletions
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242
build.zig
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@ -1,6 +1,7 @@
const std = @import("std");
const builtin = @import("builtin");
const compat = @import("src/compat.zig");
const tests = @import("test/tests.zig");
const Build = compat.Build;
const Step = compat.build.Step;
@ -8,7 +9,7 @@ const Step = compat.build.Step;
const assert = std.debug.assert;
const print = std.debug.print;
const Exercise = struct {
pub const Exercise = struct {
/// main_file must have the format key_name.zig.
/// The key will be used as a shorthand to build
/// just one example.
@ -33,6 +34,9 @@ const Exercise = struct {
/// We need to keep track of this, so we compile with libc
C: bool = false,
/// This exercise is not supported by the current Zig compiler.
skip: bool = false,
/// Returns the name of the main file with .zig stripped.
pub fn baseName(self: Exercise) []const u8 {
assert(std.mem.endsWith(u8, self.main_file, ".zig"));
@ -425,49 +429,59 @@ const exercises = [_]Exercise{
.main_file = "083_anonymous_lists.zig",
.output = "I say hello!",
},
// disabled because of https://github.com/ratfactor/ziglings/issues/163
// Skipped because of https://github.com/ratfactor/ziglings/issues/163
// direct link: https://github.com/ziglang/zig/issues/6025
// .{
// .main_file = "084_async.zig",
// .output = "foo() A",
// .hint = "Read the facts. Use the facts.",
// .@"async" = true,
// },
// .{
// .main_file = "085_async2.zig",
// .output = "Hello async!",
// .@"async" = true,
// },
// .{
// .main_file = "086_async3.zig",
// .output = "5 4 3 2 1",
// .@"async" = true,
// },
// .{
// .main_file = "087_async4.zig",
// .output = "1 2 3 4 5",
// .@"async" = true,
// },
// .{
// .main_file = "088_async5.zig",
// .output = "Example Title.",
// .@"async" = true,
// },
// .{
// .main_file = "089_async6.zig",
// .output = ".com: Example Title, .org: Example Title.",
// .@"async" = true,
// },
// .{
// .main_file = "090_async7.zig",
// .output = "beef? BEEF!",
// .@"async" = true,
// },
// .{
// .main_file = "091_async8.zig",
// .output = "ABCDEF",
// .@"async" = true,
// },
.{
.main_file = "084_async.zig",
.output = "foo() A",
.hint = "Read the facts. Use the facts.",
.@"async" = true,
.skip = true,
},
.{
.main_file = "085_async2.zig",
.output = "Hello async!",
.@"async" = true,
.skip = true,
},
.{
.main_file = "086_async3.zig",
.output = "5 4 3 2 1",
.@"async" = true,
.skip = true,
},
.{
.main_file = "087_async4.zig",
.output = "1 2 3 4 5",
.@"async" = true,
.skip = true,
},
.{
.main_file = "088_async5.zig",
.output = "Example Title.",
.@"async" = true,
.skip = true,
},
.{
.main_file = "089_async6.zig",
.output = ".com: Example Title, .org: Example Title.",
.@"async" = true,
.skip = true,
},
.{
.main_file = "090_async7.zig",
.output = "beef? BEEF!",
.@"async" = true,
.skip = true,
},
.{
.main_file = "091_async8.zig",
.output = "ABCDEF",
.@"async" = true,
.skip = true,
},
.{
.main_file = "092_interfaces.zig",
.output = "Daily Insect Report:\nAnt is alive.\nBee visited 17 flowers.\nGrasshopper hopped 32 meters.",
@ -498,6 +512,7 @@ const exercises = [_]Exercise{
pub fn build(b: *Build) !void {
if (!compat.is_compatible) compat.die();
if (!validate_exercises()) std.os.exit(1);
use_color_escapes = false;
if (std.io.getStdErr().supportsAnsiEscapeCodes()) {
@ -542,30 +557,35 @@ pub fn build(b: *Build) !void {
const use_healed = b.option(bool, "healed", "Run exercises from patches/healed") orelse false;
const exno: ?usize = b.option(usize, "n", "Select exercise");
const header_step = PrintStep.create(b, logo, std.io.getStdErr());
const header_step = PrintStep.create(b, logo);
if (exno) |i| {
const ex = blk: {
for (exercises) |ex| {
if (ex.number() == i) break :blk ex;
}
print("unknown exercise number: {}\n", .{i});
if (exno) |n| {
if (n == 0 or n > exercises.len - 1) {
print("unknown exercise number: {}\n", .{n});
std.os.exit(1);
};
}
const ex = exercises[n - 1];
const base_name = ex.baseName();
const file_path = std.fs.path.join(b.allocator, &[_][]const u8{
if (use_healed) "patches/healed" else "exercises", ex.main_file,
}) catch unreachable;
const build_step = b.addExecutable(.{ .name = base_name, .root_source_file = .{ .path = file_path } });
if (ex.C) {
build_step.linkLibC();
}
build_step.install();
const run_step = build_step.run();
const test_step = b.step("test", b.fmt("Run {s} without checking output", .{ex.main_file}));
test_step.dependOn(&run_step.step);
if (ex.skip) {
const skip_step = SkipStep.create(b, ex);
test_step.dependOn(&skip_step.step);
} else {
test_step.dependOn(&run_step.step);
}
const install_step = b.step("install", b.fmt("Install {s} to prefix path", .{ex.main_file}));
install_step.dependOn(b.getInstallStep());
@ -583,8 +603,8 @@ pub fn build(b: *Build) !void {
var prev_step = verify_step;
for (exercises) |exn| {
const n = exn.number();
if (n > i) {
const nth = exn.number();
if (nth > n) {
const verify_stepn = ZiglingStep.create(b, exn, use_healed);
verify_stepn.step.dependOn(&prev_step.step);
@ -593,33 +613,59 @@ pub fn build(b: *Build) !void {
}
start_step.dependOn(&prev_step.step);
return;
} else if (use_healed) {
const test_step = b.step("test", "Test the healed exercises");
b.default_step = test_step;
for (exercises) |ex| {
const base_name = ex.baseName();
const file_path = std.fs.path.join(b.allocator, &[_][]const u8{
"patches/healed", ex.main_file,
}) catch unreachable;
const build_step = b.addExecutable(.{ .name = base_name, .root_source_file = .{ .path = file_path } });
if (ex.C) {
build_step.linkLibC();
}
build_step.install();
const run_step = build_step.run();
if (ex.skip) {
const skip_step = SkipStep.create(b, ex);
test_step.dependOn(&skip_step.step);
} else {
test_step.dependOn(&run_step.step);
}
}
return;
}
const ziglings_step = b.step("ziglings", "Check all ziglings");
ziglings_step.dependOn(&header_step.step);
b.default_step = ziglings_step;
var prev_step: *Step = undefined;
for (exercises, 0..) |ex, i| {
// Don't use the "multi-object for loop" syntax, in order to avoid a syntax
// error with old Zig compilers.
var prev_step = &header_step.step;
for (exercises) |ex| {
const base_name = ex.baseName();
const file_path = std.fs.path.join(b.allocator, &[_][]const u8{
if (use_healed) "patches/healed" else "exercises", ex.main_file,
"exercises", ex.main_file,
}) catch unreachable;
const build_step = b.addExecutable(.{ .name = base_name, .root_source_file = .{ .path = file_path } });
build_step.install();
const verify_stepn = ZiglingStep.create(b, ex, use_healed);
if (i == 0) {
prev_step = &verify_stepn.step;
} else {
verify_stepn.step.dependOn(prev_step);
verify_stepn.step.dependOn(prev_step);
prev_step = &verify_stepn.step;
}
prev_step = &verify_stepn.step;
}
ziglings_step.dependOn(prev_step);
const test_step = b.step("test", "Run all the tests");
test_step.dependOn(tests.addCliTests(b, &exercises));
}
var use_color_escapes = false;
@ -648,6 +694,12 @@ const ZiglingStep = struct {
fn make(step: *Step, prog_node: *std.Progress.Node) anyerror!void {
_ = prog_node;
const self = @fieldParentPtr(@This(), "step", step);
if (self.exercise.skip) {
print("Skipping {s}\n\n", .{self.exercise.main_file});
return;
}
self.makeInternal() catch {
if (self.exercise.hint.len > 0) {
print("\n{s}HINT: {s}{s}", .{ bold_text, self.exercise.hint, reset_text });
@ -809,23 +861,21 @@ const ZiglingStep = struct {
}
};
// Print a message to a file.
// Print a message to stderr.
const PrintStep = struct {
step: Step,
message: []const u8,
file: std.fs.File,
pub fn create(owner: *Build, message: []const u8, file: std.fs.File) *PrintStep {
pub fn create(owner: *Build, message: []const u8) *PrintStep {
const self = owner.allocator.create(PrintStep) catch @panic("OOM");
self.* = .{
.step = Step.init(.{
.id = .custom,
.name = "Print",
.name = "print",
.owner = owner,
.makeFn = make,
}),
.message = message,
.file = file,
};
return self;
@ -835,6 +885,56 @@ const PrintStep = struct {
_ = prog_node;
const p = @fieldParentPtr(PrintStep, "step", step);
try p.file.writeAll(p.message);
print("{s}", .{p.message});
}
};
// Skip an exercise.
const SkipStep = struct {
step: Step,
exercise: Exercise,
pub fn create(owner: *Build, exercise: Exercise) *SkipStep {
const self = owner.allocator.create(SkipStep) catch @panic("OOM");
self.* = .{
.step = Step.init(.{
.id = .custom,
.name = owner.fmt("skip {s}", .{exercise.main_file}),
.owner = owner,
.makeFn = make,
}),
.exercise = exercise,
};
return self;
}
fn make(step: *Step, prog_node: *std.Progress.Node) !void {
_ = prog_node;
const p = @fieldParentPtr(SkipStep, "step", step);
if (p.exercise.skip) {
print("{s} skipped\n", .{p.exercise.main_file});
}
}
};
// Check that each exercise number, excluding the last, forms the sequence `[1, exercise.len)`.
fn validate_exercises() bool {
// Don't use the "multi-object for loop" syntax, in order to avoid a syntax error with old Zig
// compilers.
var i: usize = 0;
for (exercises[0 .. exercises.len - 1]) |ex| {
i += 1;
if (ex.number() != i) {
print(
"exercise {s} has an incorrect number: expected {}, got {s}\n",
.{ ex.main_file, i, ex.key() },
);
return false;
}
}
return true;
}

167
test/tests.zig Normal file
View file

@ -0,0 +1,167 @@
const std = @import("std");
const root = @import("../build.zig");
const debug = std.debug;
const fs = std.fs;
const Build = std.build;
const Step = Build.Step;
const RunStep = std.Build.RunStep;
const Exercise = root.Exercise;
pub fn addCliTests(b: *std.Build, exercises: []const Exercise) *Step {
const step = b.step("test-cli", "Test the command line interface");
// We should use a temporary path, but it will make the implementation of
// `build.zig` more complex.
const outdir = "patches/healed";
fs.cwd().makePath(outdir) catch |err| {
debug.print("unable to make '{s}': {s}\n", .{ outdir, @errorName(err) });
return step;
};
{
const case_step = createCase(b, "case-1");
// Test that `zig build -Dn=n -Dhealed test` selects the nth exercise.
var i: usize = 0;
for (exercises[0 .. exercises.len - 1]) |ex| {
i += 1;
if (ex.skip) continue;
const patch = PatchStep.create(b, ex, outdir);
const cmd = b.addSystemCommand(
&.{ b.zig_exe, "build", b.fmt("-Dn={}", .{i}), "-Dhealed", "test" },
);
cmd.setName(b.fmt("zig build -D={} -Dhealed test", .{i}));
cmd.expectExitCode(0);
cmd.step.dependOn(&patch.step);
// Some exercise output has an extra space character.
if (ex.check_stdout)
expectStdOutMatch(cmd, ex.output)
else
expectStdErrMatch(cmd, ex.output);
case_step.dependOn(&cmd.step);
}
step.dependOn(case_step);
}
{
const case_step = createCase(b, "case-2");
// Test that `zig build -Dn=n -Dhealed test` skips disabled esercises.
var i: usize = 0;
for (exercises[0 .. exercises.len - 1]) |ex| {
i += 1;
if (!ex.skip) continue;
const cmd = b.addSystemCommand(
&.{ b.zig_exe, "build", b.fmt("-Dn={}", .{i}), "-Dhealed", "test" },
);
cmd.setName(b.fmt("zig build -D={} -Dhealed test", .{i}));
cmd.expectExitCode(0);
cmd.expectStdOutEqual("");
expectStdErrMatch(cmd, b.fmt("{s} skipped", .{ex.main_file}));
case_step.dependOn(&cmd.step);
}
step.dependOn(case_step);
}
const cleanup = b.addRemoveDirTree(outdir);
step.dependOn(&cleanup.step);
return step;
}
fn createCase(b: *Build, name: []const u8) *Step {
const case_step = b.allocator.create(Step) catch @panic("OOM");
case_step.* = Step.init(.{
.id = .custom,
.name = name,
.owner = b,
});
return case_step;
}
// Apply a patch to the specified exercise.
const PatchStep = struct {
const join = fs.path.join;
const exercises_path = "exercises";
const patches_path = "patches/patches";
step: Step,
exercise: Exercise,
outdir: []const u8,
pub fn create(owner: *Build, exercise: Exercise, outdir: []const u8) *PatchStep {
const self = owner.allocator.create(PatchStep) catch @panic("OOM");
self.* = .{
.step = Step.init(.{
.id = .custom,
.name = owner.fmt("patch {s}", .{exercise.main_file}),
.owner = owner,
.makeFn = make,
}),
.exercise = exercise,
.outdir = outdir,
};
return self;
}
fn make(step: *Step, _: *std.Progress.Node) !void {
const b = step.owner;
const self = @fieldParentPtr(PatchStep, "step", step);
const exercise = self.exercise;
const name = exercise.baseName();
// Use the POSIX patch variant.
const file = join(b.allocator, &.{ exercises_path, exercise.main_file }) catch
@panic("OOM");
const patch = join(b.allocator, &.{ patches_path, b.fmt("{s}.patch", .{name}) }) catch
@panic("OOM");
const output = join(b.allocator, &.{ self.outdir, exercise.main_file }) catch
@panic("OOM");
const argv = &.{ "patch", "-i", patch, "-o", output, file };
var child = std.process.Child.init(argv, b.allocator);
child.stdout_behavior = .Ignore; // the POSIX standard says that stdout is not used
_ = try child.spawnAndWait();
}
};
//
// Missing functions from std.Build.RunStep
//
/// Adds a check for stderr match. Does not add any other checks.
pub fn expectStdErrMatch(self: *RunStep, bytes: []const u8) void {
const new_check: RunStep.StdIo.Check = .{
.expect_stderr_match = self.step.owner.dupe(bytes),
};
self.addCheck(new_check);
}
/// Adds a check for stdout match as well as a check for exit code 0, if
/// there is not already an expected termination check.
pub fn expectStdOutMatch(self: *RunStep, bytes: []const u8) void {
const new_check: RunStep.StdIo.Check = .{
.expect_stdout_match = self.step.owner.dupe(bytes),
};
self.addCheck(new_check);
if (!self.hasTermCheck()) {
self.expectExitCode(0);
}
}