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ps: initial process subsystem

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Loïc Grégoire
2026-06-18 18:54:38 -04:00
parent 42b10b886e
commit e50b1e0167
9 changed files with 92 additions and 73 deletions
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src/ex/fireworks.zig
+6 -29
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@@ -3,6 +3,7 @@ const std = @import("std");
const r = @import("root");
const ke = r.ke;
const mm = r.mm;
const ps = r.ps;
const sintab = @import("sintab.zig");
var pixel_buffer: [*]u8 = undefined;
@@ -30,20 +31,8 @@ fn plot_pixel(x: i64, y: i64, color: u32) void {
@as(*u32, @ptrCast(@alignCast(&pixel_buffer[pixel_offset]))).* = color;
}
fn read_tsc() u64 {
var lo: u32 = 0;
var hi: u32 = 0;
asm volatile ("rdtsc"
: [lo] "={eax}" (lo),
[hi] "={edx}" (hi),
);
return (@as(u64, hi) << 32) | @as(u64, lo);
}
fn rand_tsc_based() u32 {
const tsc = read_tsc();
const tsc = ke.time.read_time();
const lo: u32 = @truncate(tsc);
const hi: u32 = @truncate(tsc >> 32);
return lo ^ hi;
@@ -163,26 +152,14 @@ fn particle(param: ?*anyopaque) void {
ke.sched.block();
}
fn make_thread(entry: *const fn (?*anyopaque) void, arg: ?*anyopaque) *ke.Thread {
var ret: *ke.Thread = mm.zone.gpa.create(ke.Thread) catch @panic("oom");
const stack = mm.heap.alloc(r.kib(16)) catch @panic("wtf");
ret.init(@intFromPtr(stack), r.kib(16), entry, arg);
ret.priority = ke.Thread.Priority.default;
ret.base_priority = ke.Thread.Priority.default;
return ret;
}
fn spawn_particle(arg: ?*anyopaque) void {
const thread = make_thread(&particle, arg);
ke.sched.enqueue(thread);
const t = ps.thread.create_kernel(ke.Thread.Priority.default, &particle, arg) catch @panic("OOM");
ke.sched.enqueue(&t.kern);
}
fn spawn_explodeable() void {
const thread = make_thread(&explodeable, null);
ke.sched.enqueue(thread);
const t = ps.thread.create_kernel(ke.Thread.Priority.default, &explodeable, null) catch @panic("OOM");
ke.sched.enqueue(&t.kern);
}
fn explodeable(_: ?*anyopaque) void {