Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

johnwest — Fri, 31 Mar 2023 04:48:17 GMT

Hello Jaden,

Thanks!
John

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

JadenUE — Thu, 30 Mar 2023 10:12:53 GMT

Hi John,

Not sure if this is something of use to you but I will put it here for others facing this issue in the future.

I have had luck with the following:

proj.conf:

CONFIG_SYS_HEAP_RUNTIME_STATS=y

c function:

#include <zephyr/sys/sys_heap.h>

// Debug Variables

extern struct k_heap _system_heap;

struct sys_memory_stats stats;

void rtos_hal_print_heap_info(void)

{

sys_heap_runtime_stats_get(&_system_heap.heap, &stats);

printk("\n");

printk("INFO: Allocated Heap = %zu\n", stats.allocated_bytes);

printk("INFO: Free Heap = %zu\n", stats.free_bytes);

printk("INFO: Max Allocated Heap = %zu\n", stats.max_allocated_bytes);

printk("\n");

return;

}

Kind Regards,

Jaden

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

johnwest — Thu, 13 Oct 2022 04:08:53 GMT

Amanda,

I see this in heap.c - I'll focus on this:

void *sys_heap_alloc(struct sys_heap *heap, size_t bytes)
{
struct z_heap *h = heap->heap;

if (bytes == 0U || size_too_big(h, bytes)) {
return NULL;
}

chunksz_t chunk_sz = bytes_to_chunksz(h, bytes);
chunkid_t c = alloc_chunk(h, chunk_sz);
if (c == 0U) {
return NULL;
}

/* Split off remainder if any */
if (chunk_size(h, c) > chunk_sz) {
split_chunks(h, c, c + chunk_sz);
free_list_add(h, c + chunk_sz);
}

set_chunk_used(h, c, true);
#ifdef CONFIG_SYS_HEAP_RUNTIME_STATS
h->allocated_bytes += chunksz_to_bytes(h, chunk_size(h, c));
#endif
return chunk_mem(h, c);
}

Regards,
John

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

johnwest — Thu, 13 Oct 2022 00:38:45 GMT

Amanda,

At least that's a real example that you've found -

sys_heap_runtime_stats_get(&nrf_modem_lib_shmem_heap.heap, &stats->shmem.heap);

And that's great if it's the nrf_model_lib_shmem_heap I'm wanting to monitor - but to be useful in this app I need a way to get a handle to the remaining available memory that's in the 1/2 of the 9160's M33 memory space - what's left of the 0x40000 / 2 -> 0x20000 -> 128KB - what's the handle to that?

Once I know that - then sys_heap_runtime_stats_get() will be useful.

Maybe there's an additional config option for this - I've searched 'heap' in the available options - it doesn't jump out at me if it's there.

If I'm understanding this correctly - there's modem heap, Zephyr heap, and application heap - and I don't know the handle to the application heap.

Thanks,
John

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

Amanda Hsieh — Fri, 07 Oct 2022 15:58:56 GMT

Hi,

Not sure what is your code, but you can take a look how it is used at https://github.com/nrfconnect/sdk-nrf/blob/e54437a9feffa55f871e60559d7e495befeeb90a/lib/nrf_modem_lib/diag.c#L28

Regards,
Amanda

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

johnwest — Thu, 06 Oct 2022 22:26:15 GMT

Amanda,

That fixed the structure issue for struct sys_heap_runtime_stats stat; -

but when I run the code it jumps to an exception.

I want to see if I can determine the real-time heap while running under Zephyr.

Thanks,
John W.

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

Amanda Hsieh — Tue, 27 Sep 2022 14:13:56 GMT

Hi John,

[quote user=""]#define CONFIG_SYS_HEAP_RUNTIME_STATS[/quote]

CONFIG_SYS_HEAP_RUNTIME_STATS should go in the prj.conf, not a source file.

Try to add it into the prj.conf and let me know it can work or not. Thanks.

Regards,
Amanda

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

johnwest — Mon, 26 Sep 2022 17:27:18 GMT

Amanda,

When I do that - it says sys_heap.h isn't found.

With #include <sys/sys_heap.h> - sys_heap.h is found.

Regards,
John W.

RE: Nordic - nRF9160 (nRF Zephyr SDK) - Is __heapstats() Supported? When will it be supported if not?

Amanda Hsieh — Mon, 26 Sep 2022 15:04:58 GMT

Hi,

[quote user=""]#include <sys/sys_heap.h>[/quote]

Can you try #include <zephyr/sys/sys_heap.h>?

Regards,
Amanda