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perf: fix core starvation

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boreddevnl
2026-03-22 21:04:50 +01:00
parent 5c199e028a
commit 4e8ea5acd2
4 changed files with 74 additions and 36 deletions
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48
src/wm/graphics.c
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@@ -34,9 +34,11 @@ static uint32_t g_back_buffer[MAX_FB_WIDTH * MAX_FB_HEIGHT] __attribute__((align
static int g_clip_x = 0, g_clip_y = 0, g_clip_w = 0, g_clip_h = 0;
static bool g_clip_enabled = false;
static uint32_t *g_render_target = NULL;
static int g_rt_width = 0;
static int g_rt_height = 0;
extern uint32_t smp_this_cpu_id(void);
#define MAX_RENDER_CPUS 32
static uint32_t *g_render_target[MAX_RENDER_CPUS] = {0};
static int g_rt_width[MAX_RENDER_CPUS] = {0};
static int g_rt_height[MAX_RENDER_CPUS] = {0};
static ttf_font_t *g_current_ttf = NULL;
@@ -176,15 +178,19 @@ void graphics_clear_dirty_no_lock(void) {
}
void graphics_set_render_target(uint32_t *buffer, int w, int h) {
g_render_target = buffer;
g_rt_width = w;
g_rt_height = h;
uint32_t cpu = smp_this_cpu_id();
if (cpu < MAX_RENDER_CPUS) {
g_render_target[cpu] = buffer;
g_rt_width[cpu] = w;
g_rt_height[cpu] = h;
}
}
void put_pixel(int x, int y, uint32_t color) {
if (g_render_target) {
if (x >= 0 && x < g_rt_width && y >= 0 && y < g_rt_height) {
g_render_target[y * g_rt_width + x] = color;
uint32_t cpu = smp_this_cpu_id();
if (cpu < MAX_RENDER_CPUS && g_render_target[cpu]) {
if (x >= 0 && x < g_rt_width[cpu] && y >= 0 && y < g_rt_height[cpu]) {
g_render_target[cpu][y * g_rt_width[cpu] + x] = color;
}
return;
}
@@ -204,9 +210,10 @@ void put_pixel(int x, int y, uint32_t color) {
}
uint32_t graphics_get_pixel(int x, int y) {
if (g_render_target) {
if (x >= 0 && x < g_rt_width && y >= 0 && y < g_rt_height) {
return g_render_target[y * g_rt_width + x];
uint32_t cpu = smp_this_cpu_id();
if (cpu < MAX_RENDER_CPUS && g_render_target[cpu]) {
if (x >= 0 && x < g_rt_width[cpu] && y >= 0 && y < g_rt_height[cpu]) {
return g_render_target[cpu][y * g_rt_width[cpu] + x];
}
return 0;
}
@@ -220,15 +227,16 @@ uint32_t graphics_get_pixel(int x, int y) {
void draw_rect(int x, int y, int w, int h, uint32_t color) {
int x1 = x, y1 = y, x2 = x + w, y2 = y + h;
if (g_render_target) {
uint32_t cpu = smp_this_cpu_id();
if (cpu < MAX_RENDER_CPUS && g_render_target[cpu]) {
if (x1 < 0) x1 = 0;
if (y1 < 0) y1 = 0;
if (x2 > g_rt_width) x2 = g_rt_width;
if (y2 > g_rt_height) y2 = g_rt_height;
if (x2 > g_rt_width[cpu]) x2 = g_rt_width[cpu];
if (y2 > g_rt_height[cpu]) y2 = g_rt_height[cpu];
if (x1 >= x2 || y1 >= y2) return;
for (int i = y1; i < y2; i++) {
uint32_t *row = &g_render_target[i * g_rt_width + x1];
uint32_t *row = &g_render_target[cpu][i * g_rt_width[cpu] + x1];
int len = x2 - x1;
for (int j = 0; j < len; j++) {
row[j] = color;
@@ -461,7 +469,9 @@ void draw_char(int x, int y, char c, uint32_t color) {
unsigned char uc = (unsigned char)c;
if (uc > 127) return;
if (g_clip_enabled && !g_render_target) {
uint32_t cpu = smp_this_cpu_id();
bool has_rt = (cpu < MAX_RENDER_CPUS && g_render_target[cpu]);
if (g_clip_enabled && !has_rt) {
if (x + 8 <= g_clip_x || x >= g_clip_x + g_clip_w ||
y + 8 <= g_clip_y || y >= g_clip_y + g_clip_h) {
return;
@@ -484,7 +494,9 @@ void draw_char_bitmap(int x, int y, char c, uint32_t color) {
unsigned char uc = (unsigned char)c;
if (uc > 127) return;
if (g_clip_enabled && !g_render_target) {
uint32_t cpu = smp_this_cpu_id();
bool has_rt = (cpu < MAX_RENDER_CPUS && g_render_target[cpu]);
if (g_clip_enabled && !has_rt) {
if (x + 8 <= g_clip_x || x >= g_clip_x + g_clip_w ||
y + 8 <= g_clip_y || y >= g_clip_y + g_clip_h) {
return;

2
src/wm/wm.h
View File

@@ -6,6 +6,7 @@
#include <stdint.h>
#include <stdbool.h>
#include "../sys/spinlock.h"
uint64_t wm_lock_acquire(void);
void wm_lock_release(uint64_t flags);
@@ -55,6 +56,7 @@ struct Window {
uint32_t *pixels;
uint32_t *comp_pixels;
void *font;
spinlock_t lock;
// Callbacks
void (*paint)(Window *win);