Th3maz1ng/ESP8266_swiss_army_board
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Added the new mallocWithFallback function which tries to allocate the specified size and falls back to a smaller size when fails

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Th3maz1ng 2022-04-23 22:51:52 +02:00
parent d9dfc15f21
commit 4635f4daaa
2 changed files with 18 additions and 0 deletions
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17
src/app/utilities.cpp
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@ -68,3 +68,20 @@ uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber)
return toReturn; return toReturn;
} }
void *mallocWithFallback(size_t requestedSize, size_t *acceptedSize)
{
void *allocAddr(nullptr);
uint32_t divider(1);
do
{
requestedSize /= divider++;
allocAddr = malloc(requestedSize);
} while(!allocAddr && requestedSize >= 50); //If we can't even manage to malloc 50 bytes then we should give up and cry
if(acceptedSize && allocAddr)*acceptedSize = requestedSize;
else if(acceptedSize)*acceptedSize = 0;
return allocAddr;
}

1
src/app/utilities.h
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@ -5,4 +5,5 @@
char *addChar(char *pointer, const char character); char *addChar(char *pointer, const char character);
char *dateTimeFormater(char *pointer, const uint8_t value, const char character); char *dateTimeFormater(char *pointer, const uint8_t value, const char character);
uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber); uint32_t monthNumTo3LetterAbbreviation(const uint8_t monthNumber);
void *mallocWithFallback(size_t requestedSize, size_t *acceptedSize = nullptr);
#endif // UTILITIES_H #endif // UTILITIES_H