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samples: sys_heap: extend with k_heap_array_get

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Extend the sample with a demonstration of `k_heap_array_get`.

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2025-06-16 14:53:41 +10:00 committed by Benjamin Cabé
parent f11bddbf6e
commit 4bd7e0bc94
2 changed files with 39 additions and 9 deletions
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15
samples/basic/sys_heap/README.rst
View File

@ -33,9 +33,14 @@ Sample Output
.. code-block:: console
System heap sample
System heap sample
allocated 0, free 196, max allocated 0, heap size 256
allocated 156, free 36, max allocated 156, heap size 256
allocated 100, free 92, max allocated 156, heap size 256
allocated 0, free 196, max allocated 156, heap size 256
allocated 0, free 196, max allocated 0, heap size 256
allocated 156, free 36, max allocated 156, heap size 256
allocated 100, free 92, max allocated 156, heap size 256
allocated 0, free 196, max allocated 156, heap size 256
1 static heap(s) allocated:
0 - address 0x80552a8 allocated 12, free 180, max allocated 12, heap size 256
2 heap(s) allocated (including static):
0 - address 0x80552a8 allocated 12, free 180, max allocated 12, heap size 256
1 - address 0x805530c allocated 0, free 196, max allocated 156, heap size 256

33
samples/basic/sys_heap/src/main.c
View File

@ -15,6 +15,7 @@ static char heap_mem[HEAP_SIZE];
static struct sys_heap heap;
static void print_sys_memory_stats(struct sys_heap *);
static void print_static_heaps(void);
static void print_all_heaps(void);
int main(void)
@ -35,7 +36,17 @@ int main(void)
sys_heap_free(&heap, p);
print_sys_memory_stats(&heap);
/* Allocate from our custom k_heap to make the output
* more interesting and prevent compiler optimisations from
* discarding it.
*/
p = k_heap_alloc(&my_kernel_heap, 10, K_FOREVER);
print_static_heaps();
print_all_heaps();
/* Cleanup memory */
k_heap_free(&my_kernel_heap, p);
return 0;
}
@ -50,16 +61,30 @@ static void print_sys_memory_stats(struct sys_heap *hp)
stats.max_allocated_bytes, HEAP_SIZE);
}
static void print_static_heaps(void)
{
struct k_heap *ha;
int n;
n = k_heap_array_get(&ha);
printk("%d static heap(s) allocated:\n", n);
for (int i = 0; i < n; i++) {
printk("\t%d - address %p ", i, &ha[i]);
print_sys_memory_stats(&ha[i].heap);
}
}
static void print_all_heaps(void)
{
struct sys_heap **ha;
size_t i, n;
int n;
n = sys_heap_array_get(&ha);
printk("There are %zu heaps allocated:\n", n);
printk("%d heap(s) allocated (including static):\n", n);
for (i = 0; i < n; i++) {
printk("\t%zu - address %p ", i, ha[i]);
for (int i = 0; i < n; i++) {
printk("\t%d - address %p ", i, ha[i]);
print_sys_memory_stats(ha[i]);
}
}