os/stack_malloc.c

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#include <stdlib.h>
 
#include "openmrn_features.h"
 
#if OPENMRN_FEATURE_THREAD_FREERTOS
const void *__attribute__((weak)) stack_malloc(unsigned long length);
 
const void *stack_malloc(unsigned long length)
{
    /* We do a trick here to ensure that the compiler will output a stack frame
     * for this function. We want to avoid tail-chain optimization in this
     * function or else it disappears from the stack traces done for memory
     * tracing. */
    void *volatile v = malloc(length);
    return v;
}
#endif
 
void *buffer_malloc(size_t length) __attribute__((weak));
 
void *buffer_malloc(size_t length)
{
    /* We do a trick here to ensure that the compiler will output a stack frame
     * for this function. We want to avoid tail-chain optimization in this
     * function or else it disappears from the stack traces done for memory
     * tracing. */
    void *volatile v = malloc(length);
    return v;
}