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Print heap stats to JSON document #375

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Merged
merged 1 commit into from
Oct 10, 2024
Merged

Print heap stats to JSON document #375

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37 changes: 36 additions & 1 deletion src/MicroOcpp/Core/Memory.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -207,7 +207,7 @@ void mo_mem_print_stats() {

for (const auto& heapEntry : memBlocks) {
size += heapEntry.second.size;
#if MO_DBG_LEVEL >= MO_DL_DEBUG
#if MO_DBG_LEVEL >= MO_DL_VERBOSE
{
MO_CONSOLE_PRINTF("@%p - %zu B (%s)\n", heapEntry.first, heapEntry.second.size, heapEntry.second.tag.c_str());
}
Expand Down Expand Up @@ -254,6 +254,41 @@ void mo_mem_print_stats() {
#endif
}

int mo_mem_write_stats_json(char *buf, size_t size) {
DynamicJsonDocument doc {size * 2};

doc["total_current"] = memTotal;
doc["total_max"] = memTotalMax;
doc["total_blocks"] = memBlocks.size();

JsonArray by_tag = doc.createNestedArray("by_tag");
for (const auto& tag : memTags) {
JsonObject entry = by_tag.createNestedObject();
entry["tag"] = tag.first.c_str();
entry["current"] = tag.second.current_size;
entry["max"] = tag.second.max_size;
}

size_t untagged = 0, untagged_size = 0;

for (const auto& heapEntry : memBlocks) {
if (heapEntry.second.tag.empty()) {
untagged ++;
untagged_size += heapEntry.second.size;
}
}

doc["untagged_blocks"] = untagged;
doc["untagged_size"] = untagged_size;

if (doc.overflowed()) {
MO_DBG_ERR("exceeded JSON capacity");
return -1;
}

return (int)serializeJson(doc, buf, size);
}

#endif //MO_OVERRIDE_ALLOCATION && MO_ENABLE_HEAP_PROFILER

namespace MicroOcpp {
Expand Down
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