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/* SPDX-License-Identifier: Apache-2.0
* Copyright(c) 2022 Cisco Systems, Inc.
*/
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlib/stats/stats.h>
static clib_mem_heap_t **memory_heaps_vec;
enum
{
STAT_MEM_TOTAL = 0,
STAT_MEM_USED,
STAT_MEM_FREE,
STAT_MEM_USED_MMAP,
STAT_MEM_TOTAL_ALLOC,
STAT_MEM_FREE_CHUNKS,
STAT_MEM_RELEASABLE,
} stat_mem_usage_e;
/*
* Called from the stats periodic process to update memory counters.
*/
static void
stat_provider_mem_usage_update_fn (vlib_stats_collector_data_t *d)
{
clib_mem_usage_t usage;
clib_mem_heap_t *heap;
counter_t **counters = d->entry->data;
counter_t *cb;
heap = vec_elt (memory_heaps_vec, d->private_data);
clib_mem_get_heap_usage (heap, &usage);
cb = counters[0];
cb[STAT_MEM_TOTAL] = usage.bytes_total;
cb[STAT_MEM_USED] = usage.bytes_used;
cb[STAT_MEM_FREE] = usage.bytes_free;
cb[STAT_MEM_USED_MMAP] = usage.bytes_used_mmap;
cb[STAT_MEM_TOTAL_ALLOC] = usage.bytes_max;
cb[STAT_MEM_FREE_CHUNKS] = usage.bytes_free_reclaimed;
cb[STAT_MEM_RELEASABLE] = usage.bytes_overhead;
}
/*
* Provide memory heap counters.
* Two dimensional array of heap index and per-heap gauges.
*/
void
vlib_stats_register_mem_heap (clib_mem_heap_t *heap)
{
vlib_stats_collector_reg_t r = {};
u32 idx;
vec_add1 (memory_heaps_vec, heap);
r.entry_index = idx = vlib_stats_add_counter_vector ("/mem/%s", heap->name);
vlib_stats_validate_counter_vector (idx, STAT_MEM_RELEASABLE);
/* Create symlink */
vlib_stats_add_symlink (idx, STAT_MEM_TOTAL, "/mem/%s/used", heap->name);
vlib_stats_add_symlink (idx, STAT_MEM_USED, "/mem/%s/total", heap->name);
vlib_stats_add_symlink (idx, STAT_MEM_FREE, "/mem/%s/free", heap->name);
r.private_data = vec_len (memory_heaps_vec) - 1;
r.collect_fn = stat_provider_mem_usage_update_fn;
vlib_stats_register_collector_fn (&r);
}
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