Daniel Samson
23bcd77c58
Every user binary and the two device-logic library modules (pci, usb) now
`@import` the concern modules directly instead of aliasing through `runtime`:
runtime.ipc/process/time/service/input/block/display -> @import("<module>")
runtime.device / runtime.device_manager -> @import("driver")
runtime.fs -> @import("file-system")
runtime.Thread -> @import("thread").Thread
runtime.system.{write,writeRecord,klog*} -> logging.*
runtime.system.{sleep,timerOnce,wallClock,clock} -> time.*
runtime.system.{spawn*,kill,exit,yield,processes,...}-> process.*
runtime.system.{mmap,munmap,PROT_*} -> memory.*
runtime.dma.* / runtime.shared_memory.* / runtime.allocator -> memory.*
Each consumer keeps its own alias name (e.g. `const device = @import("driver")`),
so call sites are unchanged and there are no collisions with local `driver`
variables. build.zig now injects the concern modules into every user binary via
`default_imports`; pci/usb module import lists were updated to match.
The `runtime` and `system` shims remain for one more step (root.zig still uses
runtime); they are deleted in C5. Nothing but root.zig imports `runtime` now.
Verified: zig build, zig build test, and 17 QEMU cases (smoke, device-manager,
logger, fat-mount, fat-mutations, usb-storage, usb-hid, display-native,
virtio-gpu, input, thread-spawn, thread-mutex, process-kill, shared-memory,
driver-restart, acpi-ps2, pci-scan).
44 lines
2.0 KiB
Zig
44 lines
2.0 KiB
Zig
//! crash-test — a test fixture, not a driver: claims the device it is assigned,
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//! hellos the device manager, announces itself, then faults on purpose. The
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//! driver-restart scenario drives the manager's whole restart machinery with
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//! it: fault → exit reason → backoff → respawn → the **same claim succeeding
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//! again** (claim release on death, M17.1, through the manager's path) → the
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//! crash-loop cap. Spawned bare (the initial-ramdisk sweep starts every bundled
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//! binary), it exits silently so it cannot derange other tests.
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const std = @import("std");
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const ipc = @import("ipc");
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const process = @import("process");
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const time = @import("time");
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const device = @import("driver");
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const logging = @import("logging");
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const device_manager_protocol = @import("device-manager-protocol");
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pub fn main(init: process.Init) void {
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const argument = init.arguments.get(1) orelse return; // bare: stay silent
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const assigned = std.fmt.parseInt(u64, argument, 10) catch return;
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// The respawn only reaches this line because the kernel released the
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// previous instance's claim at death. A failed claim exits cleanly — the
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// manager reads "meant to stop" and the scenario fails loudly by silence.
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if (!device.claim(assigned)) {
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_ = logging.write("crash-test: claim failed\n");
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return;
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}
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var manager: ?ipc.Handle = null;
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var tries: u32 = 0;
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while (manager == null and tries < 100) : (tries += 1) {
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manager = ipc.lookup(.device_manager);
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if (manager == null) time.sleepMillis(20);
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}
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const h = manager orelse return;
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const hello = device_manager_protocol.Hello{ .role = @intFromEnum(device_manager_protocol.Role.device), .device_id = assigned };
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var reply: [device_manager_protocol.message_maximum]u8 = undefined;
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_ = ipc.call(h, std.mem.asBytes(&hello), &reply) catch return;
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_ = logging.write("crash-test: faulting now\n");
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const poison: *volatile u32 = @ptrFromInt(0xdead0000);
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poison.* = 1; // the restart machinery's fuel: a real segmentation fault
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}
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