4coder/4ed_mem.h

108 lines
3.0 KiB
C

#ifndef FED_MEM_H
#define FED_MEM_H
#include "4coder_mem.h"
#define MEMORY_DEBUG
static void
general_memory_open(System_Functions *system, General_Memory *general, void *memory, int32_t size){
#if defined(MEMORY_DEBUG)
general_memory_open(general, memory, size);
#else
general_memory_open(general, memory, size);
#endif
}
#if defined(Assert) && !defined(MEMORY_DEBUG)
static int32_t
general_memory_check(System_Functions *system, General_Memory *general){
Bubble *sentinel = &general->sentinel;
for (Bubble *bubble = sentinel->next;
bubble != sentinel;
bubble = bubble->next){
Assert(bubble);
Bubble *next = bubble->next;
Assert(bubble == next->prev);
if (next != sentinel && bubble->prev != sentinel){
Assert(bubble->next > bubble);
Assert(bubble > bubble->prev);
char *end_ptr = (char*)(bubble + 1) + bubble->size;
char *next_ptr = (char*)next;
(void)(end_ptr);
(void)(next_ptr);
Assert(end_ptr == next_ptr);
}
}
return(1);
}
#else
static int32_t
general_memory_check(System_Functions *system, General_Memory *general){return(1);}
#endif
#define OS_PAGE_SIZE 4096
static void*
general_memory_allocate(System_Functions *system, General_Memory *general, int32_t size){
#if defined(MEMORY_DEBUG)
{
persist u32 round_val = OS_PAGE_SIZE-1;
size = (size + round_val) & (~round_val);
void *result = system->memory_allocate(0, size + OS_PAGE_SIZE);
system->memory_set_protection(0, (u8*)result + size, OS_PAGE_SIZE, 0);
return(result);
}
#else
return general_memory_allocate(general, memory, size);
#endif
}
static void
general_memory_free(System_Functions *system, General_Memory *general, void *memory){
#if defined(MEMORY_DEBUG)
{
system->memory_free(0, memory, 0);
}
#else
return general_memory_free(general, memory, size);
#endif
}
static void*
general_memory_reallocate(System_Functions *system, General_Memory *general, void *old, int32_t old_size, int32_t size){
#if defined(MEMORY_DEBUG)
{
void *result = general_memory_allocate(system, general, size);
memcpy(result, old, old_size);
general_memory_free(system, general, old);
return(result);
}
#else
return general_memory_reallocate(general, memory, size);
#endif
}
inline void*
general_memory_reallocate_nocopy(System_Functions *system, General_Memory *general, void *old, int32_t size){
#if defined(MEMORY_DEBUG)
{
general_memory_free(system, general, old);
return general_memory_allocate(system, general, size);
}
#else
return general_memory_reallocate_nocopy(general, memory, size);
#endif
}
#define reset_temp_memory end_temp_memory
#define gen_struct(s, g, T) (T*)general_memory_allocate(s, g, sizeof(T), 0)
#define gen_array(s, g, T, size) (T*)general_memory_allocate(s, g, sizeof(T)*(size))
#define gen_block(s, g, size) general_memory_open(s, g, size, 0)
#endif