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Code Issues Releases Activity

Arduino 7 does not report an overflow util heap is exhausted. Added a mechanism to estimate how much memory the doc is using so we can limit the number of entries in the messages

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MartinMueller2003 2024-02-29 16:34:20 -05:00
parent f472dc1158
commit 4944f0ff04
1 changed files with 10 additions and 3 deletions
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9
src/ESPUIclient.cpp
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@ -269,6 +269,8 @@ uint32_t ESPUIclient::prepareJSONChunk(uint16_t startindex,
// Serial.println(String("prepareJSONChunk: Start. InUpdateMode: ") + String(InUpdateMode)); // Serial.println(String("prepareJSONChunk: Start. InUpdateMode: ") + String(InUpdateMode));
int elementcount = 0; int elementcount = 0;
uint32_t MaxEstimatedMarshaledJsonSize = (!InUpdateMode) ? ESPUI.jsonInitialDocumentSize: ESPUI.jsonUpdateDocumentSize;
uint32_t TotalEstimatedMarshaledJsonSize = 0;
do // once do // once
{ {
@ -386,11 +388,16 @@ uint32_t ESPUIclient::prepareJSONChunk(uint16_t startindex,
} }
} }
TotalEstimatedMarshaledJsonSize += control->GetEstimatedMarshaledSize();
bool DocWillOverflow = TotalEstimatedMarshaledJsonSize >= MaxEstimatedMarshaledJsonSize;
JsonObject item = items.createNestedObject(); JsonObject item = items.createNestedObject();
elementcount++; elementcount++;
if(!DocWillOverflow)
{
control->MarshalControl(item, InUpdateMode, DataOffset); control->MarshalControl(item, InUpdateMode, DataOffset);
}
if (rootDoc.overflowed() || (ESPUI.jsonChunkNumberMax > 0 && (elementcount % ESPUI.jsonChunkNumberMax) == 0)) if (DocWillOverflow || (ESPUI.jsonChunkNumberMax > 0 && (elementcount % ESPUI.jsonChunkNumberMax) == 0))
{ {
// String("prepareJSONChunk: too much data in the message. Remove the last entry"); // String("prepareJSONChunk: too much data in the message. Remove the last entry");
if (1 == elementcount) if (1 == elementcount)