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subhobhai943andClaude Opus 4.8
dd4922767a
The visible goal was a Web app: type a URL, see the page, fetched over the TCP stack SUB-OS built. Getting there surfaced -- and forced fixes to -- two deeper problems. Async HTTP client (net/http_client.c) tcp_connect/recv all block, so fetching from the GUI would freeze the compositor. Fetches now run on one long-lived kernel worker thread that services a single-slot mailbox; the requester posts a job and polls its state. Ownership follows the state, and the two hand-off points (worker completion, requester release) run under interrupts-off, so a window can close mid-fetch with neither leak nor use-after-free. do_fetch returns its terminal state rather than publishing it, closing a window where the requester could free the job before finalize read it. Cooperative scheduling for the idle thread (the core fix) The login prompt, the shell and the GUI compositor all run on the pid-0 idle thread, which the scheduler by design never preempts (sched_tick skips pid 0) and never requeues on a yield (weave_on clear). So it could neither be preempted to let the worker run, nor cleanly yield -- the worker was simply starved, and an early attempt to yield from it froze the shell outright. The idle thread now joins the weave rotation once hardware interrupts are live, and the network wait loops (tcp, dns, ping, the worker's idle) yield through a new net_wait() instead of halting the CPU. The compositor spends its frame-budget slack yielding too. Result: a background fetch progresses while the desktop holds 54 FPS. Web app (gui/gui_app_web.c) A text browser: URL bar, Go, and a Raw/Reader toggle. Raw shows the response verbatim; Reader strips markup (dropping <script>/<style> bodies), decodes the common entities, and word-wraps the body. The line index is cached against content/view/width so scrolling and idle repaints are free. It only ever polls the worker, so it never stalls. TCP throughput (the limit flagged last time) The 32-slot table with a 2 s TIME_WAIT linger capped sustained serving at ~16 req/s. The table is now 64 slots, a connection this end closed after serving a request lingers 250 ms rather than 2 s, and expired TIME_WAIT entries are reaped from the count path so a quiet table still drains. netstat/netmon gained served-since-boot and peak-slots counters. Also: a `webget` CLI (the async client from a shell), listen/accept introspection already present, and a globe icon for the app. Verified on x86_64: `webget` fetched an 812-byte page (HTTP 200, 10 ms) on the worker thread; the GUI Web app rendered the same page in Reader mode while the desktop held 54 FPS; an 80-request burst through the 64-slot table returned 80/80 (was 39/40 before) and netstat reported "80 served, peak 33 of 64 slots" -- a peak that would have overflowed the old table. Builds clean on x86_64, aarch64 and armv8i. Co-Authored-By: Claude Opus 4.8 <[email protected]> Claude-Session: https://claude.ai/code/session_01Fh5z6V7nGPbHvqVG5p4CXX
424 lines
11 KiB
C
424 lines
11 KiB
C
// SUB-OS Desktop Icon Set: 16x16 palette-indexed glyphs
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//
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// Each icon is 16 rows of 16 hex digits, where the digit indexes the shared
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// palette below. Storing the art as text keeps it editable by hand, and the
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// indirection lets every glyph pick up a theme change for free.
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#include <gui/gui_icons.h>
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#include <gui/gui_gfx.h>
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#include <gui/gui_theme.h>
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#define ICON_PALETTE_SIZE 16
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static const uint32_t g_palette[ICON_PALETTE_SIZE] = {
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0x00000000, // 0 transparent
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0xFF0B0F19, // 1 outline / near-black
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0xFFF8FAFC, // 2 white
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0xFF94A3B8, // 3 muted grey
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0xFF475569, // 4 dark grey
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0xFF38BDF8, // 5 primary sky
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0xFF0284C7, // 6 primary dark
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0xFF34D399, // 7 success green
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0xFFFBBF24, // 8 warning amber
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0xFFF87171, // 9 danger red
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0xFF818CF8, // A accent indigo
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0xFFEC4899, // B pink
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0xFF1E293B, // C surface
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0xFF334155, // D elevated
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0xFF000000, // E pure black
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0xFFD9A441 // F folder tan
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};
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static const char* g_icons[GUI_ICON_COUNT][GUI_ICON_SIZE] = {
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// GUI_ICON_TERMINAL
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{
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"4111111111111114",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4C7CCCCCCCCCCCC4",
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"4C77CCCCCCCCCCC4",
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"4C777CCCCCCCCCC4",
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"4C7777CCCCCCCCC4",
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"4C777CCCCCCCCCC4",
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"4C77CCCCCCCCCCC4",
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"4C7CCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4CC77777777CCCC4",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4111111111111114",
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},
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// GUI_ICON_MONITOR
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{
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"4111111111111114",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCC5C4",
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"4CCCCCCCCCCC5CC4",
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"4CCCCCCCCC55CCC4",
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"4CCCCCCCC5CCCCC4",
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"4CCCCCC55CCCCCC4",
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"4CCCC55CCCCCCCC4",
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"4CC55CCCCCCCCCC4",
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"4C5CCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4111111111111114",
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"0000444444440000",
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"0000004444000000",
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"0000444444440000",
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"0000000000000000",
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},
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// GUI_ICON_FOLDER
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{
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"0000000000000000",
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"0FFFFF0000000000",
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"0F888FF000000000",
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"0F88888FFFFFFF00",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0F8888888888F000",
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"0FFFFFFFFFFFF000",
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"0000000000000000",
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"0000000000000000",
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"0000000000000000",
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},
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// GUI_ICON_CALC
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{
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"4111111111111114",
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"4CCCCCCCCCCCCCC4",
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"4C777777777777C4",
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"4C777777777777C4",
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"4CCCCCCCCCCCCCC4",
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"4C2CC2CC2CC2CCC4",
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"4CCCCCCCCCCCCCC4",
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"4C2CC2CC2CC2CCC4",
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"4CCCCCCCCCCCCCC4",
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"4C2CC2CC2CC2CCC4",
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"4CCCCCCCCCCCCCC4",
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"4C2CC2CC2CC5CCC4",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4CCCCCCCCCCCCCC4",
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"4111111111111114",
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},
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// GUI_ICON_PAINT
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{
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"0000000000000000",
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"0000333333000000",
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"0003222222300000",
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"0032955992230000",
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"0329999999923000",
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"0329B99997923000",
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"0329999999923000",
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"0032999999230000",
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"0003299992300000",
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"0000322223000000",
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"0000033330000000",
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"0000004440000000",
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"0000004440000000",
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"0000004440000000",
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"0000000000000000",
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"0000000000000000",
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},
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// GUI_ICON_INFO
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{
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"0000055555000000",
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"0000555555550000",
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"0005566665550000",
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"0055666666655000",
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"0556662266665500",
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"0556662266665500",
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"0556666666665500",
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"0556662266665500",
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"0556622226665500",
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"0556666226665500",
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"0556666226665500",
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"0556662222265500",
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"0055666666655000",
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"0005566665550000",
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"0000555555550000",
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"0000055555000000",
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},
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// GUI_ICON_SETTINGS
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{
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"0000034443000000",
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"0000034443000000",
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"0003344444330000",
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"0034444444443000",
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"0344444444444300",
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"3444442224444430",
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"4444422222444444",
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"4444422222444444",
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"4444422222444444",
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"3444442224444430",
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"0344444444444300",
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"0034444444443000",
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"0003344444330000",
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"0000034443000000",
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"0000034443000000",
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"0000000000000000",
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},
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// GUI_ICON_TASKS
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{
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"0000000000000000",
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"0555555555555550",
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"0500000000000050",
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"0507000000000050",
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"0507700000000050",
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"0507770000000050",
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"0507777000000050",
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"0500000000000050",
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"0508880000000050",
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"0508888000000050",
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"0500000000000050",
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"0509990000000050",
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"0509999000000050",
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"0500000000000050",
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"0555555555555550",
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"0000000000000000",
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},
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// GUI_ICON_LOG
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{
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"0022222222222000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0240000000042000",
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"0244444444442000",
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"0022222222222000",
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"0000000000000000",
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},
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// GUI_ICON_FLASK
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{
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"0000022222000000",
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"0000020002000000",
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"0000020002000000",
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"0000020002000000",
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"0000020002000000",
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"0000200000200000",
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"0000200000200000",
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"0002000000020000",
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"0002077777020000",
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"0020777777702000",
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"0020777777702000",
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"0207777777770200",
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"0207777777770200",
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"0027777777772000",
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"0002222222220000",
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"0000000000000000",
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},
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// GUI_ICON_CLOCK
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{
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"0000055555000000",
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"0005522222550000",
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"0052222222225000",
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"0522222222222500",
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"0522221222222500",
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"5222221222222250",
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"5222221222222250",
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"5222221222222250",
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"5222221111122250",
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"5222222222222250",
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"5222222222222250",
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"0522222222222500",
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"0522222222222500",
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"0052222222225000",
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"0005522222550000",
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"0000055555000000",
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},
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// GUI_ICON_FILE
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{
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"0022222222200000",
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"0244444444200000",
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"0244444444420000",
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"0244444444442000",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0244444444444200",
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"0222222222222200",
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"0000000000000000",
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},
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// GUI_ICON_POWER
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{
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"0000009900000000",
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"0000009900000000",
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"0000999999000000",
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"0009900009900000",
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"0099009900990000",
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"0990009900099000",
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"0990009900099000",
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"9900009900009900",
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"9900009900009900",
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"9900000000009900",
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"9900000000009900",
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"0990000000099000",
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"0990000000099000",
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"0099000000990000",
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"0009999999900000",
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"0000099999000000",
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},
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// GUI_ICON_WARNING
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{
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"0000008800000000",
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"0000008800000000",
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"0000088880000000",
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"0000088880000000",
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"0000881188000000",
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"0000881188000000",
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"0008811118800000",
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"0008811118800000",
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"0088111111880000",
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"0088111111880000",
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"0881111111188000",
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"0881118811188000",
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"8811118811118800",
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"8811118811118800",
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"8888888888888888",
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"8888888888888888",
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},
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// GUI_ICON_HEART
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{
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"0000000000000000",
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"0009BB9009BB9000",
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"009BBBB99BBBB900",
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"09BBBBBBBBBBBB90",
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"09BB2BBBBBBBBB90",
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"09B22BBBBBBBBB90",
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"09BB2BBBBBBBBB90",
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"09BBBBBBBBBBBB90",
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"009BBBBBBBBBB900",
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"0009BBBBBBBB9000",
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"00009BBBBBB90000",
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"000009BBBB900000",
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"0000009BB9000000",
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"0000000990000000",
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"0000000000000000",
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"0000000000000000",
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},
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// GUI_ICON_NETWORK
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{
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"0000000000000000",
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"0000005555000000",
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"0000556666550000",
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"0005666556665000",
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"0056666556666500",
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"0555555555555550",
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"0566666556666650",
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"5666666556666665",
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"5666666556666665",
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"0566666556666650",
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"0555555555555550",
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"0056666556666500",
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"0005666556665000",
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"0000556666550000",
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"0000005555000000",
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"0000000000000000",
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},
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// GUI_ICON_GLOBE
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{
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"0000055555500000",
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"0003556555655300",
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"0035565556555300",
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"0355556555655530",
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"0355565556555530",
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"0355556555655530",
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"3555565556555553",
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"3666666666666663",
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"3555565556555553",
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"0355556555655530",
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"0355565556555530",
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"0355556555655530",
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"0035565556555300",
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"0003556555655300",
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"0000055555500000",
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"0000000000000000",
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},};
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static const char* g_icon_names[GUI_ICON_COUNT] = {
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"Terminal", "Monitor", "Folder", "Calculator", "Paint", "Info",
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"Settings", "Tasks", "Log", "Tests", "Clock", "File", "Power", "Warning",
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"Heart", "Network", "Globe"
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};
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static uint8_t hex_index(char c) {
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if (c >= '0' && c <= '9') return (uint8_t)(c - '0');
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if (c >= 'A' && c <= 'F') return (uint8_t)(c - 'A' + 10);
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if (c >= 'a' && c <= 'f') return (uint8_t)(c - 'a' + 10);
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return 0;
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}
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void gui_icons_init(void) {
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// The glyph table is static const; nothing to build at runtime.
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}
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const char* gui_icon_name(gui_icon_id_t id) {
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if (id < 0 || id >= GUI_ICON_COUNT) return "Unknown";
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return g_icon_names[id];
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}
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void gui_icon_draw_scaled(gui_icon_id_t id, int x, int y, int scale) {
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if (id < 0 || id >= GUI_ICON_COUNT) return;
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if (scale < 1) scale = 1;
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for (int row = 0; row < GUI_ICON_SIZE; row++) {
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const char* line = g_icons[id][row];
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if (!line) continue;
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for (int col = 0; col < GUI_ICON_SIZE; col++) {
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uint32_t color = g_palette[hex_index(line[col])];
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if ((color >> 24) == 0) continue; // Transparent pixel
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if (scale == 1) {
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gui_gfx_draw_pixel(x + col, y + row, color);
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} else {
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gui_gfx_fill_rect(x + col * scale, y + row * scale, scale, scale, color);
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}
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}
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}
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}
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void gui_icon_draw(gui_icon_id_t id, int x, int y) {
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gui_icon_draw_scaled(id, x, y, 1);
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}
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void gui_icon_draw_tinted(gui_icon_id_t id, int x, int y, int scale, uint32_t tint) {
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if (id < 0 || id >= GUI_ICON_COUNT) return;
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if (scale < 1) scale = 1;
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// Every opaque pixel becomes the tint; the glyph acts purely as a stencil.
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for (int row = 0; row < GUI_ICON_SIZE; row++) {
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const char* line = g_icons[id][row];
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if (!line) continue;
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for (int col = 0; col < GUI_ICON_SIZE; col++) {
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if ((g_palette[hex_index(line[col])] >> 24) == 0) continue;
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if (scale == 1) {
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gui_gfx_draw_pixel(x + col, y + row, tint);
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} else {
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gui_gfx_fill_rect(x + col * scale, y + row * scale, scale, scale, tint);
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}
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}
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}
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}
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