allocator.h

 
#ifndef ASRT_ALLOCATOR_H
#define ASRT_ALLOCATOR_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "./asrt_assert.h"
#include "./span.h"
 
#include <stdlib.h>
#include <string.h>
 
 
struct asrt_allocator
{
        void* ptr;  
        void* ( *alloc )( void* ptr, uint32_t size );
        void ( *free )( void* ptr, void* mem );
};
 
static inline void* asrt_alloc( struct asrt_allocator* a, uint32_t size )
{
        ASRT_ASSERT( a && a->free );
        return a->alloc( a->ptr, size );
}
 
static inline void asrt_free( struct asrt_allocator* a, void** mem )
{
        ASRT_ASSERT( a && a->free );
        ASRT_ASSERT( *mem );
        a->free( a->ptr, *mem );
        *mem = NULL;
}
 
char* asrt_realloc_str( struct asrt_allocator* a, struct asrt_span* buff );
 
static inline void* asrt_call_malloc( void* ptr, uint32_t size )
{
        (void) ptr;  // context pointer unused by default malloc
        return malloc( size );
}
 
static inline void asrt_call_free( void* ptr, void* mem )
{
        (void) ptr;  // context pointer unused by default free
        free( mem );
}
 
static inline struct asrt_allocator asrt_default_allocator( void )
{
        return ( struct asrt_allocator ){
            .ptr   = NULL,
            .alloc = &asrt_call_malloc,
            .free  = &asrt_call_free,
        };
}
 
#ifdef __cplusplus
}
#endif
 
#endif