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build runner: update Mutex and Condition usage to std.Io

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This commit is contained in:
Andrew Kelley 2025-11-24 11:18:35 -08:00
parent a242292644
commit 3f34f5e433
6 changed files with 149 additions and 112 deletions
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18
lib/compiler/build_runner.zig
View File

@ -494,7 +494,7 @@ pub fn main() !void {
.max_rss = max_rss,
.max_rss_is_default = false,
.max_rss_mutex = .{},
.max_rss_mutex = .init,
.skip_oom_steps = skip_oom_steps,
.unit_test_timeout_ns = test_timeout_ns,
@ -583,7 +583,7 @@ pub fn main() !void {
if (run.web_server) |*ws| {
assert(!watch); // fatal error after CLI parsing
while (true) switch (ws.wait()) {
while (true) switch (try ws.wait()) {
.rebuild => {
for (run.step_stack.keys()) |step| {
step.state = .precheck_done;
@ -652,7 +652,7 @@ const Run = struct {
gpa: Allocator,
max_rss: u64,
max_rss_is_default: bool,
max_rss_mutex: std.Thread.Mutex,
max_rss_mutex: Io.Mutex,
skip_oom_steps: bool,
unit_test_timeout_ns: ?u64,
watch: bool,
@ -1305,6 +1305,8 @@ fn workerMakeOneStep(
prog_node: std.Progress.Node,
run: *Run,
) void {
const io = b.graph.io;
// First, check the conditions for running this step. If they are not met,
// then we return without doing the step, relying on another worker to
// queue this step up again when dependencies are met.
@ -1326,8 +1328,8 @@ fn workerMakeOneStep(
}
if (s.max_rss != 0) {
run.max_rss_mutex.lock();
defer run.max_rss_mutex.unlock();
run.max_rss_mutex.lockUncancelable(io);
defer run.max_rss_mutex.unlock(io);
// Avoid running steps twice.
if (s.state != .precheck_done) {
@ -1378,8 +1380,6 @@ fn workerMakeOneStep(
printErrorMessages(run.gpa, s, .{}, bw, ttyconf, run.error_style, run.multiline_errors) catch {};
}
const io = b.graph.io;
handle_result: {
if (make_result) |_| {
@atomicStore(Step.State, &s.state, .success, .seq_cst);
@ -1406,8 +1406,8 @@ fn workerMakeOneStep(
// If this is a step that claims resources, we must now queue up other
// steps that are waiting for resources.
if (s.max_rss != 0) {
run.max_rss_mutex.lock();
defer run.max_rss_mutex.unlock();
run.max_rss_mutex.lockUncancelable(io);
defer run.max_rss_mutex.unlock(io);
// Give the memory back to the scheduler.
run.claimed_rss -= s.max_rss;

31
lib/std/Build/Cache.zig
View File

@ -22,7 +22,7 @@ manifest_dir: fs.Dir,
hash: HashHelper = .{},
/// This value is accessed from multiple threads, protected by mutex.
recent_problematic_timestamp: Io.Timestamp = .zero,
mutex: std.Thread.Mutex = .{},
mutex: Io.Mutex = .init,
/// A set of strings such as the zig library directory or project source root, which
/// are stripped from the file paths before putting into the cache. They
@ -474,6 +474,7 @@ pub const Manifest = struct {
/// A cache manifest file exists however it could not be parsed.
InvalidFormat,
OutOfMemory,
Canceled,
};
/// Check the cache to see if the input exists in it. If it exists, returns `true`.
@ -559,12 +560,14 @@ pub const Manifest = struct {
self.diagnostic = .{ .manifest_create = error.FileNotFound };
return error.CacheCheckFailed;
},
error.Canceled => return error.Canceled,
else => |e| {
self.diagnostic = .{ .manifest_create = e };
return error.CacheCheckFailed;
},
}
},
error.Canceled => return error.Canceled,
else => |e| {
self.diagnostic = .{ .manifest_create = e };
return error.CacheCheckFailed;
@ -762,6 +765,7 @@ pub const Manifest = struct {
// Every digest before this one has been populated successfully.
return .{ .miss = .{ .file_digests_populated = idx } };
},
error.Canceled => return error.Canceled,
else => |e| {
self.diagnostic = .{ .file_open = .{
.file_index = idx,
@ -790,7 +794,7 @@ pub const Manifest = struct {
.inode = actual_stat.inode,
};
if (self.isProblematicTimestamp(cache_hash_file.stat.mtime)) {
if (try self.isProblematicTimestamp(cache_hash_file.stat.mtime)) {
// The actual file has an unreliable timestamp, force it to be hashed
cache_hash_file.stat.mtime = .zero;
cache_hash_file.stat.inode = 0;
@ -848,7 +852,9 @@ pub const Manifest = struct {
}
}
fn isProblematicTimestamp(man: *Manifest, timestamp: Io.Timestamp) bool {
fn isProblematicTimestamp(man: *Manifest, timestamp: Io.Timestamp) error{Canceled}!bool {
const io = man.cache.io;
// If the file_time is prior to the most recent problematic timestamp
// then we don't need to access the filesystem.
if (timestamp.nanoseconds < man.recent_problematic_timestamp.nanoseconds)
@ -856,8 +862,8 @@ pub const Manifest = struct {
// Next we will check the globally shared Cache timestamp, which is accessed
// from multiple threads.
man.cache.mutex.lock();
defer man.cache.mutex.unlock();
try man.cache.mutex.lock(io);
defer man.cache.mutex.unlock(io);
// Save the global one to our local one to avoid locking next time.
man.recent_problematic_timestamp = man.cache.recent_problematic_timestamp;
@ -871,11 +877,18 @@ pub const Manifest = struct {
var file = man.cache.manifest_dir.createFile("timestamp", .{
.read = true,
.truncate = true,
}) catch return true;
}) catch |err| switch (err) {
error.Canceled => return error.Canceled,
else => return true,
};
defer file.close();
// Save locally and also save globally (we still hold the global lock).
man.recent_problematic_timestamp = (file.stat() catch return true).mtime;
const stat = file.stat() catch |err| switch (err) {
error.Canceled => return error.Canceled,
else => return true,
};
man.recent_problematic_timestamp = stat.mtime;
man.cache.recent_problematic_timestamp = man.recent_problematic_timestamp;
}
@ -902,7 +915,7 @@ pub const Manifest = struct {
.inode = actual_stat.inode,
};
if (self.isProblematicTimestamp(ch_file.stat.mtime)) {
if (try self.isProblematicTimestamp(ch_file.stat.mtime)) {
// The actual file has an unreliable timestamp, force it to be hashed
ch_file.stat.mtime = .zero;
ch_file.stat.inode = 0;
@ -1038,7 +1051,7 @@ pub const Manifest = struct {
.contents = null,
};
if (self.isProblematicTimestamp(new_file.stat.mtime)) {
if (try self.isProblematicTimestamp(new_file.stat.mtime)) {
// The actual file has an unreliable timestamp, force it to be hashed
new_file.stat.mtime = .zero;
new_file.stat.inode = 0;

85
lib/std/Build/Fuzz.zig
View File

@ -27,11 +27,11 @@ root_prog_node: std.Progress.Node,
prog_node: std.Progress.Node,
/// Protects `coverage_files`.
coverage_mutex: std.Thread.Mutex,
coverage_mutex: Io.Mutex,
coverage_files: std.AutoArrayHashMapUnmanaged(u64, CoverageMap),
queue_mutex: std.Thread.Mutex,
queue_cond: std.Thread.Condition,
queue_mutex: Io.Mutex,
queue_cond: Io.Condition,
msg_queue: std.ArrayList(Msg),
pub const Mode = union(enum) {
@ -122,8 +122,8 @@ pub fn init(
.root_prog_node = root_prog_node,
.prog_node = .none,
.coverage_files = .empty,
.coverage_mutex = .{},
.queue_mutex = .{},
.coverage_mutex = .init,
.queue_mutex = .init,
.queue_cond = .{},
.msg_queue = .empty,
};
@ -157,9 +157,7 @@ pub fn deinit(fuzz: *Fuzz) void {
fn rebuildTestsWorkerRun(run: *Step.Run, gpa: Allocator, ttyconf: tty.Config, parent_prog_node: std.Progress.Node) void {
rebuildTestsWorkerRunFallible(run, gpa, ttyconf, parent_prog_node) catch |err| {
const compile = run.producer.?;
log.err("step '{s}': failed to rebuild in fuzz mode: {s}", .{
compile.step.name, @errorName(err),
});
log.err("step '{s}': failed to rebuild in fuzz mode: {t}", .{ compile.step.name, err });
};
}
@ -208,9 +206,7 @@ fn fuzzWorkerRun(
return;
},
else => {
log.err("step '{s}': failed to rerun '{s}' in fuzz mode: {s}", .{
run.step.name, test_name, @errorName(err),
});
log.err("step '{s}': failed to rerun '{s}' in fuzz mode: {t}", .{ run.step.name, test_name, err });
return;
},
};
@ -269,8 +265,10 @@ pub fn sendUpdate(
socket: *std.http.Server.WebSocket,
prev: *Previous,
) !void {
fuzz.coverage_mutex.lock();
defer fuzz.coverage_mutex.unlock();
const io = fuzz.io;
try fuzz.coverage_mutex.lock(io);
defer fuzz.coverage_mutex.unlock(io);
const coverage_maps = fuzz.coverage_files.values();
if (coverage_maps.len == 0) return;
@ -331,30 +329,41 @@ pub fn sendUpdate(
}
fn coverageRun(fuzz: *Fuzz) void {
fuzz.queue_mutex.lock();
defer fuzz.queue_mutex.unlock();
coverageRunCancelable(fuzz) catch |err| switch (err) {
error.Canceled => return,
};
}
fn coverageRunCancelable(fuzz: *Fuzz) Io.Cancelable!void {
const io = fuzz.io;
try fuzz.queue_mutex.lock(io);
defer fuzz.queue_mutex.unlock(io);
while (true) {
fuzz.queue_cond.wait(&fuzz.queue_mutex);
try fuzz.queue_cond.wait(io, &fuzz.queue_mutex);
for (fuzz.msg_queue.items) |msg| switch (msg) {
.coverage => |coverage| prepareTables(fuzz, coverage.run, coverage.id) catch |err| switch (err) {
error.AlreadyReported => continue,
else => |e| log.err("failed to prepare code coverage tables: {s}", .{@errorName(e)}),
error.Canceled => return,
else => |e| log.err("failed to prepare code coverage tables: {t}", .{e}),
},
.entry_point => |entry_point| addEntryPoint(fuzz, entry_point.coverage_id, entry_point.addr) catch |err| switch (err) {
error.AlreadyReported => continue,
else => |e| log.err("failed to prepare code coverage tables: {s}", .{@errorName(e)}),
error.Canceled => return,
else => |e| log.err("failed to prepare code coverage tables: {t}", .{e}),
},
};
fuzz.msg_queue.clearRetainingCapacity();
}
}
fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutOfMemory, AlreadyReported }!void {
fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutOfMemory, AlreadyReported, Canceled }!void {
assert(fuzz.mode == .forever);
const ws = fuzz.mode.forever.ws;
const io = fuzz.io;
fuzz.coverage_mutex.lock();
defer fuzz.coverage_mutex.unlock();
try fuzz.coverage_mutex.lock(io);
defer fuzz.coverage_mutex.unlock(io);
const gop = try fuzz.coverage_files.getOrPut(fuzz.gpa, coverage_id);
if (gop.found_existing) {
@ -385,8 +394,8 @@ fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutO
target.ofmt,
target.cpu.arch,
) catch |err| {
log.err("step '{s}': failed to load debug information for '{f}': {s}", .{
run_step.step.name, rebuilt_exe_path, @errorName(err),
log.err("step '{s}': failed to load debug information for '{f}': {t}", .{
run_step.step.name, rebuilt_exe_path, err,
});
return error.AlreadyReported;
};
@ -397,15 +406,15 @@ fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutO
.sub_path = "v/" ++ std.fmt.hex(coverage_id),
};
var coverage_file = coverage_file_path.root_dir.handle.openFile(coverage_file_path.sub_path, .{}) catch |err| {
log.err("step '{s}': failed to load coverage file '{f}': {s}", .{
run_step.step.name, coverage_file_path, @errorName(err),
log.err("step '{s}': failed to load coverage file '{f}': {t}", .{
run_step.step.name, coverage_file_path, err,
});
return error.AlreadyReported;
};
defer coverage_file.close();
const file_size = coverage_file.getEndPos() catch |err| {
log.err("unable to check len of coverage file '{f}': {s}", .{ coverage_file_path, @errorName(err) });
log.err("unable to check len of coverage file '{f}': {t}", .{ coverage_file_path, err });
return error.AlreadyReported;
};
@ -417,7 +426,7 @@ fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutO
coverage_file.handle,
0,
) catch |err| {
log.err("failed to map coverage file '{f}': {s}", .{ coverage_file_path, @errorName(err) });
log.err("failed to map coverage file '{f}': {t}", .{ coverage_file_path, err });
return error.AlreadyReported;
};
gop.value_ptr.mapped_memory = mapped_memory;
@ -443,7 +452,7 @@ fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutO
}{ .addrs = sorted_pcs.items(.pc) });
debug_info.resolveAddresses(fuzz.gpa, sorted_pcs.items(.pc), sorted_pcs.items(.sl)) catch |err| {
log.err("failed to resolve addresses to source locations: {s}", .{@errorName(err)});
log.err("failed to resolve addresses to source locations: {t}", .{err});
return error.AlreadyReported;
};
@ -453,9 +462,11 @@ fn prepareTables(fuzz: *Fuzz, run_step: *Step.Run, coverage_id: u64) error{ OutO
ws.notifyUpdate();
}
fn addEntryPoint(fuzz: *Fuzz, coverage_id: u64, addr: u64) error{ AlreadyReported, OutOfMemory }!void {
fuzz.coverage_mutex.lock();
defer fuzz.coverage_mutex.unlock();
fn addEntryPoint(fuzz: *Fuzz, coverage_id: u64, addr: u64) error{ AlreadyReported, OutOfMemory, Canceled }!void {
const io = fuzz.io;
try fuzz.coverage_mutex.lock(io);
defer fuzz.coverage_mutex.unlock(io);
const coverage_map = fuzz.coverage_files.getPtr(coverage_id).?;
const header: *const abi.SeenPcsHeader = @ptrCast(coverage_map.mapped_memory[0..@sizeOf(abi.SeenPcsHeader)]);
@ -518,8 +529,8 @@ pub fn waitAndPrintReport(fuzz: *Fuzz) void {
.sub_path = "v/" ++ std.fmt.hex(cov.id),
};
var coverage_file = coverage_file_path.root_dir.handle.openFile(coverage_file_path.sub_path, .{}) catch |err| {
fatal("step '{s}': failed to load coverage file '{f}': {s}", .{
cov.run.step.name, coverage_file_path, @errorName(err),
fatal("step '{s}': failed to load coverage file '{f}': {t}", .{
cov.run.step.name, coverage_file_path, err,
});
};
defer coverage_file.close();
@ -530,8 +541,8 @@ pub fn waitAndPrintReport(fuzz: *Fuzz) void {
var header: fuzz_abi.SeenPcsHeader = undefined;
r.interface.readSliceAll(std.mem.asBytes(&header)) catch |err| {
fatal("step '{s}': failed to read from coverage file '{f}': {s}", .{
cov.run.step.name, coverage_file_path, @errorName(err),
fatal("step '{s}': failed to read from coverage file '{f}': {t}", .{
cov.run.step.name, coverage_file_path, err,
});
};
@ -545,8 +556,8 @@ pub fn waitAndPrintReport(fuzz: *Fuzz) void {
const chunk_count = fuzz_abi.SeenPcsHeader.seenElemsLen(header.pcs_len);
for (0..chunk_count) |_| {
const seen = r.interface.takeInt(usize, .little) catch |err| {
fatal("step '{s}': failed to read from coverage file '{f}': {s}", .{
cov.run.step.name, coverage_file_path, @errorName(err),
fatal("step '{s}': failed to read from coverage file '{f}': {t}", .{
cov.run.step.name, coverage_file_path, err,
});
};
seen_count += @popCount(seen);

37
lib/std/Build/Step.zig
View File

@ -362,7 +362,7 @@ pub fn captureChildProcess(
.allocator = arena,
.argv = argv,
.progress_node = progress_node,
}) catch |err| return s.fail("failed to run {s}: {s}", .{ argv[0], @errorName(err) });
}) catch |err| return s.fail("failed to run {s}: {t}", .{ argv[0], err });
if (result.stderr.len > 0) {
try s.result_error_msgs.append(arena, result.stderr);
@ -412,7 +412,7 @@ pub fn evalZigProcess(
error.BrokenPipe => {
// Process restart required.
const term = zp.child.wait() catch |e| {
return s.fail("unable to wait for {s}: {s}", .{ argv[0], @errorName(e) });
return s.fail("unable to wait for {s}: {t}", .{ argv[0], e });
};
_ = term;
s.clearZigProcess(gpa);
@ -428,7 +428,7 @@ pub fn evalZigProcess(
if (s.result_error_msgs.items.len > 0 and result == null) {
// Crash detected.
const term = zp.child.wait() catch |e| {
return s.fail("unable to wait for {s}: {s}", .{ argv[0], @errorName(e) });
return s.fail("unable to wait for {s}: {t}", .{ argv[0], e });
};
s.result_peak_rss = zp.child.resource_usage_statistics.getMaxRss() orelse 0;
s.clearZigProcess(gpa);
@ -453,9 +453,7 @@ pub fn evalZigProcess(
child.request_resource_usage_statistics = true;
child.progress_node = prog_node;
child.spawn() catch |err| return s.fail("failed to spawn zig compiler {s}: {s}", .{
argv[0], @errorName(err),
});
child.spawn() catch |err| return s.fail("failed to spawn zig compiler {s}: {t}", .{ argv[0], err });
const zp = try gpa.create(ZigProcess);
zp.* = .{
@ -480,7 +478,7 @@ pub fn evalZigProcess(
zp.child.stdin = null;
const term = zp.child.wait() catch |err| {
return s.fail("unable to wait for {s}: {s}", .{ argv[0], @errorName(err) });
return s.fail("unable to wait for {s}: {t}", .{ argv[0], err });
};
s.result_peak_rss = zp.child.resource_usage_statistics.getMaxRss() orelse 0;
@ -513,8 +511,8 @@ pub fn installFile(s: *Step, src_lazy_path: Build.LazyPath, dest_path: []const u
const src_path = src_lazy_path.getPath3(b, s);
try handleVerbose(b, null, &.{ "install", "-C", b.fmt("{f}", .{src_path}), dest_path });
return Io.Dir.updateFile(src_path.root_dir.handle.adaptToNewApi(), io, src_path.sub_path, .cwd(), dest_path, .{}) catch |err| {
return s.fail("unable to update file from '{f}' to '{s}': {s}", .{
src_path, dest_path, @errorName(err),
return s.fail("unable to update file from '{f}' to '{s}': {t}", .{
src_path, dest_path, err,
});
};
}
@ -524,9 +522,7 @@ pub fn installDir(s: *Step, dest_path: []const u8) !std.fs.Dir.MakePathStatus {
const b = s.owner;
try handleVerbose(b, null, &.{ "install", "-d", dest_path });
return std.fs.cwd().makePathStatus(dest_path) catch |err| {
return s.fail("unable to create dir '{s}': {s}", .{
dest_path, @errorName(err),
});
return s.fail("unable to create dir '{s}': {t}", .{ dest_path, err });
};
}
@ -825,22 +821,27 @@ pub fn cacheHitAndWatch(s: *Step, man: *Build.Cache.Manifest) !bool {
return is_hit;
}
fn failWithCacheError(s: *Step, man: *const Build.Cache.Manifest, err: Build.Cache.Manifest.HitError) error{ OutOfMemory, MakeFailed } {
fn failWithCacheError(
s: *Step,
man: *const Build.Cache.Manifest,
err: Build.Cache.Manifest.HitError,
) error{ OutOfMemory, Canceled, MakeFailed } {
switch (err) {
error.CacheCheckFailed => switch (man.diagnostic) {
.none => unreachable,
.manifest_create, .manifest_read, .manifest_lock => |e| return s.fail("failed to check cache: {s} {s}", .{
@tagName(man.diagnostic), @errorName(e),
.manifest_create, .manifest_read, .manifest_lock => |e| return s.fail("failed to check cache: {t} {t}", .{
man.diagnostic, e,
}),
.file_open, .file_stat, .file_read, .file_hash => |op| {
const pp = man.files.keys()[op.file_index].prefixed_path;
const prefix = man.cache.prefixes()[pp.prefix].path orelse "";
return s.fail("failed to check cache: '{s}{c}{s}' {s} {s}", .{
prefix, std.fs.path.sep, pp.sub_path, @tagName(man.diagnostic), @errorName(op.err),
return s.fail("failed to check cache: '{s}{c}{s}' {t} {t}", .{
prefix, std.fs.path.sep, pp.sub_path, man.diagnostic, op.err,
});
},
},
error.OutOfMemory => return error.OutOfMemory,
error.Canceled => return error.Canceled,
error.InvalidFormat => return s.fail("failed to check cache: invalid manifest file format", .{}),
}
}
@ -850,7 +851,7 @@ fn failWithCacheError(s: *Step, man: *const Build.Cache.Manifest, err: Build.Cac
pub fn writeManifest(s: *Step, man: *Build.Cache.Manifest) !void {
if (s.test_results.isSuccess()) {
man.writeManifest() catch |err| {
try s.addError("unable to write cache manifest: {s}", .{@errorName(err)});
try s.addError("unable to write cache manifest: {t}", .{err});
};
}
}

13
lib/std/Build/Step/Run.zig
View File

@ -1830,6 +1830,7 @@ fn pollZigTest(
} {
const gpa = run.step.owner.allocator;
const arena = run.step.owner.allocator;
const io = run.step.owner.graph.io;
var sub_prog_node: ?std.Progress.Node = null;
defer if (sub_prog_node) |n| n.end();
@ -2035,8 +2036,8 @@ fn pollZigTest(
{
const fuzz = fuzz_context.?.fuzz;
fuzz.queue_mutex.lock();
defer fuzz.queue_mutex.unlock();
fuzz.queue_mutex.lockUncancelable(io);
defer fuzz.queue_mutex.unlock(io);
try fuzz.msg_queue.append(fuzz.gpa, .{ .coverage = .{
.id = coverage_id.?,
.cumulative = .{
@ -2046,20 +2047,20 @@ fn pollZigTest(
},
.run = run,
} });
fuzz.queue_cond.signal();
fuzz.queue_cond.signal(io);
}
},
.fuzz_start_addr => {
const fuzz = fuzz_context.?.fuzz;
const addr = body_r.takeInt(u64, .little) catch unreachable;
{
fuzz.queue_mutex.lock();
defer fuzz.queue_mutex.unlock();
fuzz.queue_mutex.lockUncancelable(io);
defer fuzz.queue_mutex.unlock(io);
try fuzz.msg_queue.append(fuzz.gpa, .{ .entry_point = .{
.addr = addr,
.coverage_id = coverage_id.?,
} });
fuzz.queue_cond.signal();
fuzz.queue_cond.signal(io);
}
},
else => {}, // ignore other messages

77
lib/std/Build/WebServer.zig
View File

@ -19,7 +19,7 @@ step_names_trailing: []u8,
step_status_bits: []u8,
fuzz: ?Fuzz,
time_report_mutex: std.Thread.Mutex,
time_report_mutex: Io.Mutex,
time_report_msgs: [][]u8,
time_report_update_times: []i64,
@ -33,9 +33,9 @@ build_status: std.atomic.Value(abi.BuildStatus),
/// an unreasonable number of packets.
update_id: std.atomic.Value(u32),
runner_request_mutex: std.Thread.Mutex,
runner_request_ready_cond: std.Thread.Condition,
runner_request_empty_cond: std.Thread.Condition,
runner_request_mutex: Io.Mutex,
runner_request_ready_cond: Io.Condition,
runner_request_empty_cond: Io.Condition,
runner_request: ?RunnerRequest,
/// If a client is not explicitly notified of changes with `notifyUpdate`, it will be sent updates
@ -114,14 +114,14 @@ pub fn init(opts: Options) WebServer {
.step_status_bits = step_status_bits,
.fuzz = null,
.time_report_mutex = .{},
.time_report_mutex = .init,
.time_report_msgs = time_report_msgs,
.time_report_update_times = time_report_update_times,
.build_status = .init(.idle),
.update_id = .init(0),
.runner_request_mutex = .{},
.runner_request_mutex = .init,
.runner_request_ready_cond = .{},
.runner_request_empty_cond = .{},
.runner_request = null,
@ -296,6 +296,8 @@ fn accept(ws: *WebServer, stream: net.Stream) void {
}
fn serveWebSocket(ws: *WebServer, sock: *http.Server.WebSocket) !noreturn {
const io = ws.graph.io;
var prev_build_status = ws.build_status.load(.monotonic);
const prev_step_status_bits = try ws.gpa.alloc(u8, ws.step_status_bits.len);
@ -331,8 +333,8 @@ fn serveWebSocket(ws: *WebServer, sock: *http.Server.WebSocket) !noreturn {
}
{
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
try ws.time_report_mutex.lock(io);
defer ws.time_report_mutex.unlock(io);
for (ws.time_report_msgs, ws.time_report_update_times) |msg, update_time| {
if (update_time <= prev_time) continue;
// We want to send `msg`, but shouldn't block `ws.time_report_mutex` while we do, so
@ -340,8 +342,8 @@ fn serveWebSocket(ws: *WebServer, sock: *http.Server.WebSocket) !noreturn {
const owned_msg = try ws.gpa.dupe(u8, msg);
defer ws.gpa.free(owned_msg);
// Temporarily unlock, then re-lock after the message is sent.
ws.time_report_mutex.unlock();
defer ws.time_report_mutex.lock();
ws.time_report_mutex.unlock(io);
defer ws.time_report_mutex.lockUncancelable(io);
try sock.writeMessage(owned_msg, .binary);
}
}
@ -382,6 +384,8 @@ fn serveWebSocket(ws: *WebServer, sock: *http.Server.WebSocket) !noreturn {
}
}
fn recvWebSocketMessages(ws: *WebServer, sock: *http.Server.WebSocket) void {
const io = ws.graph.io;
while (true) {
const msg = sock.readSmallMessage() catch return;
if (msg.opcode != .binary) continue;
@ -390,14 +394,16 @@ fn recvWebSocketMessages(ws: *WebServer, sock: *http.Server.WebSocket) void {
switch (tag) {
_ => continue,
.rebuild => while (true) {
ws.runner_request_mutex.lock();
defer ws.runner_request_mutex.unlock();
ws.runner_request_mutex.lock(io) catch |err| switch (err) {
error.Canceled => return,
};
defer ws.runner_request_mutex.unlock(io);
if (ws.runner_request == null) {
ws.runner_request = .rebuild;
ws.runner_request_ready_cond.signal();
ws.runner_request_ready_cond.signal(io);
break;
}
ws.runner_request_empty_cond.wait(&ws.runner_request_mutex);
ws.runner_request_empty_cond.wait(io, &ws.runner_request_mutex) catch return;
},
}
}
@ -691,14 +697,15 @@ pub fn updateTimeReportCompile(ws: *WebServer, opts: struct {
trailing: []const u8,
}) void {
const gpa = ws.gpa;
const io = ws.graph.io;
const step_idx: u32 = for (ws.all_steps, 0..) |s, i| {
if (s == &opts.compile.step) break @intCast(i);
} else unreachable;
const old_buf = old: {
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
const old = ws.time_report_msgs[step_idx];
ws.time_report_msgs[step_idx] = &.{};
break :old old;
@ -720,8 +727,8 @@ pub fn updateTimeReportCompile(ws: *WebServer, opts: struct {
@memcpy(buf[@sizeOf(abi.time_report.CompileResult)..], opts.trailing);
{
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
assert(ws.time_report_msgs[step_idx].len == 0);
ws.time_report_msgs[step_idx] = buf;
ws.time_report_update_times[step_idx] = ws.now();
@ -731,14 +738,15 @@ pub fn updateTimeReportCompile(ws: *WebServer, opts: struct {
pub fn updateTimeReportGeneric(ws: *WebServer, step: *Build.Step, ns_total: u64) void {
const gpa = ws.gpa;
const io = ws.graph.io;
const step_idx: u32 = for (ws.all_steps, 0..) |s, i| {
if (s == step) break @intCast(i);
} else unreachable;
const old_buf = old: {
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
const old = ws.time_report_msgs[step_idx];
ws.time_report_msgs[step_idx] = &.{};
break :old old;
@ -750,8 +758,8 @@ pub fn updateTimeReportGeneric(ws: *WebServer, step: *Build.Step, ns_total: u64)
.ns_total = ns_total,
};
{
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
assert(ws.time_report_msgs[step_idx].len == 0);
ws.time_report_msgs[step_idx] = buf;
ws.time_report_update_times[step_idx] = ws.now();
@ -766,6 +774,7 @@ pub fn updateTimeReportRunTest(
ns_per_test: []const u64,
) void {
const gpa = ws.gpa;
const io = ws.graph.io;
const step_idx: u32 = for (ws.all_steps, 0..) |s, i| {
if (s == &run.step) break @intCast(i);
@ -782,8 +791,8 @@ pub fn updateTimeReportRunTest(
break :len @sizeOf(abi.time_report.RunTestResult) + names_len + 8 * tests_len;
};
const old_buf = old: {
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
const old = ws.time_report_msgs[step_idx];
ws.time_report_msgs[step_idx] = &.{};
break :old old;
@ -808,8 +817,8 @@ pub fn updateTimeReportRunTest(
assert(offset == buf.len);
{
ws.time_report_mutex.lock();
defer ws.time_report_mutex.unlock();
ws.time_report_mutex.lock(io) catch return;
defer ws.time_report_mutex.unlock(io);
assert(ws.time_report_msgs[step_idx].len == 0);
ws.time_report_msgs[step_idx] = buf;
ws.time_report_update_times[step_idx] = ws.now();
@ -821,8 +830,9 @@ const RunnerRequest = union(enum) {
rebuild,
};
pub fn getRunnerRequest(ws: *WebServer) ?RunnerRequest {
ws.runner_request_mutex.lock();
defer ws.runner_request_mutex.unlock();
const io = ws.graph.io;
ws.runner_request_mutex.lock(io) catch return;
defer ws.runner_request_mutex.unlock(io);
if (ws.runner_request) |req| {
ws.runner_request = null;
ws.runner_request_empty_cond.signal();
@ -830,16 +840,17 @@ pub fn getRunnerRequest(ws: *WebServer) ?RunnerRequest {
}
return null;
}
pub fn wait(ws: *WebServer) RunnerRequest {
ws.runner_request_mutex.lock();
defer ws.runner_request_mutex.unlock();
pub fn wait(ws: *WebServer) Io.Cancelable!RunnerRequest {
const io = ws.graph.io;
try ws.runner_request_mutex.lock(io);
defer ws.runner_request_mutex.unlock(io);
while (true) {
if (ws.runner_request) |req| {
ws.runner_request = null;
ws.runner_request_empty_cond.signal();
ws.runner_request_empty_cond.signal(io);
return req;
}
ws.runner_request_ready_cond.wait(&ws.runner_request_mutex);
try ws.runner_request_ready_cond.wait(io, &ws.runner_request_mutex);
}
}