ardupilot/libraries/AP_Common/c++.cpp

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// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-
//
// C++ runtime support not provided by Arduino
//
// Note: use new/delete with caution. The heap is small and
// easily fragmented.
//
#include <stdlib.h>
#include "c++.h"
#include "WProgram.h"
void * operator new(size_t size)
{
return(calloc(size, 1));
}
void operator delete(void *p)
{
if (p) free(p);
}
void * operator new[](size_t size)
{
return malloc(size);
}
void operator delete[](void * ptr)
{
if (ptr) free(ptr);
}
__extension__ typedef int __guard __attribute__((mode (__DI__)));
int __cxa_guard_acquire(__guard *g)
{
return !*(char *)(g);
};
void __cxa_guard_release (__guard *g)
{
*(char *)g = 1;
};
void __cxa_guard_abort (__guard *) {};
// free memory
extern unsigned int __bss_end;
extern void *__brkval;
void displayMemory()
{
static int minMemFree=0;
if (minMemFree<=0 || freeMemory()<minMemFree) {
minMemFree = freeMemory();
Serial.print("bytes free: ");
Serial.println(minMemFree);
}
}
int freeMemory()
{
int free_memory;
if ((int)__brkval == 0)
free_memory = ((int)&free_memory) - ((int)&__bss_end);
else
free_memory = ((int)&free_memory) - ((int)__brkval);
return free_memory;
}