Glibc memory management model frees C library memory cache

#include <malloc.h>
#include <stdlib.h>

//glibc  Main thread   Pile up   Mechanism for allocating memory   And   Sub thread   Push to allocate memory   The mechanism is different   You can do it when you have time 
//  The Lord seems to be  brk()  Heap allocation 
//  It looks like  mmap  The way   Heap allocation 
//  Then add the efficiency of algorithm optimization ,  Sub box cache  ... ...

int main(void){
    
	malloc_trim(0); // The actual implementation mechanism ,
}