Rune Harlyk
81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
#pragma once
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#include <atomic>
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#include <ArduinoJson.h>
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#include <jsonbase.h>
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struct IJSONSerializable
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{
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virtual bool SerializeToJSON(JsonObject& jsonObject) = 0;
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virtual bool DeserializeFromJSON(const JsonObjectConst& jsonObject) { return false; }
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};
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template <class E>
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constexpr auto to_value(E e) noexcept
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{
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return static_cast<std::underlying_type_t<E>>(e);
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}
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#if USE_PSRAM
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struct JsonPsramAllocator
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{
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void* allocate(size_t size) {
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return ps_malloc(size);
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}
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void deallocate(void* pointer) {
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free(pointer);
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}
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void* reallocate(void* ptr, size_t new_size) {
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return ps_realloc(ptr, new_size);
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}
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};
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typedef BasicJsonDocument<JsonPsramAllocator> AllocatedJsonDocument;
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#else
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typedef DynamicJsonDocument AllocatedJsonDocument;
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#endif
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bool LoadJSONFile(const char *fileName, size_t& bufferSize, std::unique_ptr<AllocatedJsonDocument>& pJsonDoc);
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bool SaveToJSONFile(const char *fileName, size_t& bufferSize, IJSONSerializable& object);
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bool RemoveJSONFile(const char *fileName);
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#define JSON_WRITER_DELAY 3000
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class JSONWriter
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{
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// We allow the main JSON Writer task entry point function to access private members
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friend void IRAM_ATTR JSONWriterTaskEntry(void *);
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private:
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// Writer function and flag combo
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struct WriterEntry
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{
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std::atomic_bool flag = false;
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std::function<void()> writer;
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WriterEntry(std::function<void()> writer) :
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writer(writer)
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{}
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WriterEntry(WriterEntry&& entry) : WriterEntry(entry.writer)
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{}
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};
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std::vector<WriterEntry> writers;
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std::atomic_ulong latestFlagMs;
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public:
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// Add a writer to the collection. Returns the index of the added writer, for use with FlagWriter()
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size_t RegisterWriter(std::function<void()> writer);
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// Flag a writer for invocation and wake up the task that calls them
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void FlagWriter(size_t index);
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};
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extern DRAM_ATTR std::unique_ptr<JSONWriter> g_ptrJSONWriter;
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