From 2b15821a6524b5a5231b97d5d4c0cb5a459711e8 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Tue, 2 Jun 2020 17:21:06 -0700
Subject: fix: remaining raw free calls

---
 sys/libfont/font.c | 58 +++++++++++++++++++++++++++++-------------------------
 1 file changed, 31 insertions(+), 27 deletions(-)

(limited to 'sys/libfont/font.c')

diff --git a/sys/libfont/font.c b/sys/libfont/font.c
index 1492b61..9424946 100644
--- a/sys/libfont/font.c
+++ b/sys/libfont/font.c
@@ -1979,30 +1979,33 @@ typedef struct hheap
 {
    struct hheap_chunk *head;
    void   *first_free;
-   int    num_remaining_in_head_chunk;
+   int    nrem;
 } hheap;
 
 static 
 void *
 hheap_alloc(hheap *hh, uintptr size, mem·Allocator mem, void *heap)
 {
-   if (hh->first_free) {
-      void *p = hh->first_free;
-      hh->first_free = * (void **) p;
-      return p;
-   } else {
-      if (hh->num_remaining_in_head_chunk == 0) {
-         int count = (size < 32 ? 2000 : size < 128 ? 800 : 100);
-         hheap_chunk *c = mem.alloc(heap, 1, sizeof(hheap_chunk) + size * count);
-         if (c == nil)
-            return nil;
-         c->next = hh->head;
-         hh->head = c;
-         hh->num_remaining_in_head_chunk = count;
-      }
-      --hh->num_remaining_in_head_chunk;
-      return (char *) (hh->head) + sizeof(hheap_chunk) + size * hh->num_remaining_in_head_chunk;
-   }
+    int   n;
+    void *p;
+    if (hh->first_free) {
+       p = hh->first_free;
+       hh->first_free = * (void **) p;
+       return p;
+    } else {
+       if (hh->nrem == 0) {
+          n = (size < 32 ? 2000 : size < 128 ? 800 : 100);
+          hheap_chunk *c = mem.alloc(heap, 1, sizeof(hheap_chunk) + size * n);
+          if (c == nil)
+             return nil;
+
+          c->next = hh->head;
+          hh->head = c;
+          hh->nrem = n;
+       }
+       --hh->nrem;
+       return (char *)(hh->head) + sizeof(hheap_chunk) + size * hh->nrem;
+    }
 }
 
 static 
@@ -2033,7 +2036,8 @@ new_active(hheap *hh, Edge *e, int off_x, float start_point, mem·Allocator mem,
    float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0);
    assert(z != nil);
    //assert(e->y0 <= start_point);
-   if (!z) return z;
+   if (!z) 
+       return z;
    z->fdx = dxdy;
    z->fdy = dxdy != 0.0f ? (1.0f/dxdy) : 0.0f;
    z->fx = e->x0 + dxdy * (start_point - e->y0);
@@ -2254,7 +2258,7 @@ static
 void 
 rasterize_sorted_edges(font·Bitmap *result, Edge *e, int n, int vsubsample, int off_x, int off_y, mem·Allocator mem, void *heap)
 {
-   hheap hh = { 0, 0, 0 };
+   hheap hh = { 0 };
    ActiveEdge *active = nil;
    int y,j=0, i;
    float scanline_data[129], *scanline, *scanline2;
@@ -2480,9 +2484,9 @@ rasterize_points(font·Bitmap *result, Point *pts, int *wcount, int windings, fl
             e[n].invert = 1;
             a=j,b=k;
          }
-         e[n].x0 = p[a].x * scale_x + shift_x;
+         e[n].x0 =  p[a].x * scale_x + shift_x;
          e[n].y0 = (p[a].y * y_scale_inv + shift_y) * vsubsample;
-         e[n].x1 = p[b].x * scale_x + shift_x;
+         e[n].x1 =  p[b].x * scale_x + shift_x;
          e[n].y1 = (p[b].y * y_scale_inv + shift_y) * vsubsample;
          ++n;
       }
@@ -2544,7 +2548,7 @@ tesselate_cubic(Point *points, int *num_points, float x0, float y0, float x1, fl
    float dy2 = y3-y2;
    float dx = x3-x0;
    float dy = y3-y0;
-   float longlen = (float) (sqrt(dx0*dx0+dy0*dy0)+sqrt(dx1*dx1+dy1*dy1)+sqrt(dx2*dx2+dy2*dy2));
+   float longlen  = (float) (sqrt(dx0*dx0+dy0*dy0)+sqrt(dx1*dx1+dy1*dy1)+sqrt(dx2*dx2+dy2*dy2));
    float shortlen = (float) sqrt(dx*dx+dy*dy);
    float flatness_squared = longlen*longlen-shortlen*shortlen;
 
@@ -2667,15 +2671,15 @@ rasterize(font·Bitmap *result, float flatness_in_pixels, font·Vertex *verts, i
    Point *windings = flatten(verts, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, mal, heap);
    if (windings) {
       rasterize_points(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, mal, heap);
-      free(winding_lengths);
-      free(windings);
+      mal.free(heap, windings);
+      mal.free(heap, winding_lengths);
    }
 }
 
 void 
-font·freebitmap(uchar *bm, void *userdata)
+font·freebitmap(font·Info *info, uchar *bm)
 {
-   free(bm);
+   info->free(info->heap, bm);
 }
 
 uchar *
-- 
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