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optimize enum to avoid per-call adding enums to heap

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proddy
2026-05-19 17:45:48 +02:00
parent 5292f7ed17
commit d670bc2b07
1 changed files with 12 additions and 4 deletions
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16
src/core/emsdevice.h
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@@ -26,6 +26,7 @@
#include "emsdevicevalue.h"
#include <esp32-psram.h>
#include <initializer_list>
#include <map>
namespace emsesp {
@@ -223,16 +224,23 @@ class EMSdevice {
}
}
void has_enumupdate(const std::shared_ptr<const Telegram> & telegram, uint8_t & value, const uint8_t index, const std::vector<uint8_t> & maskIn) {
uint8_t val = value < maskIn.size() ? maskIn[value] : EMS_VALUE_UINT8_NOTSET;
// maskIn is taken as a std::initializer_list so brace-list call sites
// like has_enumupdate(t, v, idx, {0,5,1,2,4}) avoid the per-call
// heap allocation of a temporary std::vector<uint8_t>. The backing
// array of an initializer_list of integral constants is placed in
// static storage or on the stack — never on the heap.
void has_enumupdate(const std::shared_ptr<const Telegram> & telegram, uint8_t & value, const uint8_t index, std::initializer_list<uint8_t> maskIn) {
uint8_t val = value < maskIn.size() ? *(maskIn.begin() + value) : EMS_VALUE_UINT8_NOTSET;
if (telegram->read_value(val, index)) {
for (uint8_t i = 0; i < maskIn.size(); i++) {
if (val == maskIn[i]) {
uint8_t i = 0;
for (auto m : maskIn) {
if (val == m) {
value = i;
has_update_ = true;
publish_value((void *)&value);
return;
}
++i;
}
}
}