staticbump.c

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#include <stdio.h>
#include <derive-c/core/prelude.h>
 
#define CAPACITY 1024
#define NAME foopool
#include <derive-c/alloc/staticbump/template.h>
 
void foopool_raw_example() {
    foopool_buffer buf;
    foopool pool = foopool_new(&buf);
 
    void* ptr1 = foopool_malloc(&pool, 100);
    DC_ASSERT(ptr1 != NULL);
 
    void* ptr2 = foopool_malloc(&pool, 200);
    DC_ASSERT(ptr2 != NULL);
 
    // Check the used size
    size_t used = foopool_get_used(&pool);
    DC_ASSERT(used == 100 + 200 + foopool_metadata_size * 2);
 
    foopool_free(&pool, ptr1);
 
    // reallocated in place
    void* ptr2_realloc = foopool_realloc(&pool, ptr2, 300);
    DC_ASSERT(ptr2_realloc == ptr2);
 
    foopool_free(&pool, ptr2_realloc);
 
    foopool_clear(&pool);
 
    // we can allocate at capacity:
    void* ptr3 = foopool_malloc(&pool, 1024 - foopool_metadata_size);
    DC_ASSERT(ptr3 != NULL);
    foopool_free(&pool, ptr3);
    foopool_clear(&pool);
 
    // But we cannot allocate more than capacity
    void* ptr4 = foopool_malloc(&pool, 1024 - foopool_metadata_size + 1);
    DC_ASSERT(ptr4 == NULL);
    DC_ASSERT(foopool_get_used(&pool) == 0);
}
 
int main() { foopool_raw_example(); }