Fork of the espurna firmware for `mhsw` switches
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/*
Show extended heap stats when EspClass::getHeapStats() is available
*/
#pragma once
#include <type_traits>
struct heap_stats_t {
uint32_t available;
uint16_t usable;
uint8_t frag_pct;
};
namespace EspClass_has_getHeapStats {
struct _detector {
template<typename T, typename = decltype(
std::declval<T>().getHeapStats(0,0,0))>
static std::true_type detect(int);
template<typename>
static std::false_type detect(...);
};
template <typename T>
struct detector : public _detector {
using result = decltype(
std::declval<detector>().detect<T>(0));
};
template <typename T>
struct typed_check : public detector<T>::result {
};
typed_check<EspClass> check{};
};
template <typename T>
void _getHeapStats(std::true_type&, T& instance, heap_stats_t& stats) {
instance.getHeapStats(&stats.available, &stats.usable, &stats.frag_pct);
}
template <typename T>
void _getHeapStats(std::false_type&, T& instance, heap_stats_t& stats) {
stats.available = instance.getFreeHeap();
stats.usable = 0;
stats.frag_pct = 0;
}
void getHeapStats(heap_stats_t& stats) {
_getHeapStats(EspClass_has_getHeapStats::check, ESP, stats);
}
// WTF
// Calling ESP.getFreeHeap() is making the system crash on a specific
// AiLight bulb, but anywhere else it should work as expected
static bool _heap_value_wtf = false;
heap_stats_t getHeapStats() {
heap_stats_t stats;
if (_heap_value_wtf) {
stats.available = 9999;
stats.usable = 9999;
stats.frag_pct = 0;
return stats;
}
getHeapStats(stats);
return stats;
}
void wtfHeap(bool value) {
_heap_value_wtf = value;
}
unsigned int getFreeHeap() {
return getHeapStats().available;
}
static unsigned int _initial_heap_value = 0;
void setInitialFreeHeap() {
_initial_heap_value = getFreeHeap();
}
unsigned int getInitialFreeHeap() {
if (0 == _initial_heap_value) {
setInitialFreeHeap();
}
return _initial_heap_value;
}
void infoMemory(const char* name, const heap_stats_t& stats) {
infoMemory(name, getInitialFreeHeap(), stats.available);
}
void infoHeapStats(const char* name, const heap_stats_t& stats) {
DEBUG_MSG_P(
PSTR("[MAIN] %-6s: %5u bytes available | %5u bytes lost (%2u%%) | %5u bytes free (%2u%%)\n"),
name,
stats.available,
(stats.available - stats.usable),
stats.frag_pct,
stats.usable,
(100 - stats.frag_pct)
);
}
void infoHeapStats(bool show_frag_stats = true) {
infoMemory("Heap", getHeapStats());
if (show_frag_stats && EspClass_has_getHeapStats::check) {
infoHeapStats("Heap", getHeapStats());
}
}