base memory allocator and chunked arenas for orca

src/egl_surface.c

@@ -14,7 +14,7 @@
 #include"graphics_internal.h"
 #include"gl_loader.h"
 
-#if OS_MACOS
+#if PLATFORM_MACOS
 	//NOTE: EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE on osx defaults to CGL backend, which doesn't handle SwapInterval correctly
 	#define MG_EGL_PLATFORM_ANGLE_TYPE EGL_PLATFORM_ANGLE_TYPE_METAL_ANGLE
 

src/graphics.c

@@ -85,11 +85,14 @@ typedef struct mg_handle_slot
 
 } mg_handle_slot;
 
+static const u32 MG_HANDLES_MAX_COUNT = 512;
+
 typedef struct mg_data
 {
 	bool init;
 
-	mem_arena handleArena;
+	mg_handle_slot handleArray[MG_HANDLES_MAX_COUNT];
+	int handleNextIndex;
 	list_info handleFreeList;
 
 	mem_arena resourceArena;
@@ -146,7 +149,7 @@ void mg_init()
 {
 	if(!__mgData.init)
 	{
-		mem_arena_init(&__mgData.handleArena);
+		__mgData.handleNextIndex = 0;
 		mem_arena_init(&__mgData.resourceArena);
 		__mgData.init = true;
 	}
@@ -162,21 +165,24 @@ u64 mg_handle_alloc(mg_handle_kind kind, void* data)
 	{
 		mg_init();
 	}
-	mem_arena* arena = &__mgData.handleArena;
 
 	mg_handle_slot* slot = list_pop_entry(&__mgData.handleFreeList, mg_handle_slot, freeListElt);
-	if(!slot)
+	if(!slot && __mgData.handleNextIndex < MG_HANDLES_MAX_COUNT)
 	{
-		slot = mem_arena_alloc_type(arena, mg_handle_slot);
+		slot = &__mgData.handleArray[__mgData.handleNextIndex];
-		DEBUG_ASSERT(slot);
+		__mgData.handleNextIndex++;
+
 		slot->generation = 1;
 	}
+	u64 h = 0;
+	if(slot)
+	{
 		slot->kind = kind;
 		slot->data = data;
 
-	u64 h = ((u64)(slot - (mg_handle_slot*)arena->ptr))<<32
+		h = ((u64)(slot - __mgData.handleArray))<<32
 		  |((u64)(slot->generation));
-
+	}
 	return(h);
 }
 
@@ -186,11 +192,10 @@ void mg_handle_recycle(u64 h)
 
 	u32 index = h>>32;
 	u32 generation = h & 0xffffffff;
-	mem_arena* arena = &__mgData.handleArena;
 
-	if(index*sizeof(mg_handle_slot) < arena->offset)
+	if(index*sizeof(mg_handle_slot) < __mgData.handleNextIndex)
 	{
-		mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index;
+		mg_handle_slot* slot = &__mgData.handleArray[index];
 		if(slot->generation == generation)
 		{
 			DEBUG_ASSERT(slot->generation != UINT32_MAX, "surface slot generation wrap around\n");
@@ -208,11 +213,10 @@ void* mg_data_from_handle(mg_handle_kind kind, u64 h)
 
 	u32 index = h>>32;
 	u32 generation = h & 0xffffffff;
-	mem_arena* arena = &__mgData.handleArena;
 
-	if(index*sizeof(mg_handle_slot) < arena->offset)
+	if(index < __mgData.handleNextIndex)
 	{
-		mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index;
+		mg_handle_slot* slot = &__mgData.handleArray[index];
 		if(  slot->generation == generation
 		  && slot->kind == kind)
 		{
@@ -278,10 +282,10 @@ mg_image_data* mg_image_data_from_handle(mg_image handle)
 //---------------------------------------------------------------
 
 #if MG_COMPILE_BACKEND_GL
-	#if defined(OS_WIN64)
+	#if defined(PLATFORM_WIN64)
 		#include"wgl_surface.h"
 		#define gl_surface_create_for_window mg_wgl_surface_create_for_window
-	#elif defined(OS_MACOS)
+	#elif defined(PLATFORM_MACOS)
 /*
 		#include"nsgl_surface.h"
 		#define gl_surface_create_for_window nsgl_surface_create_for_window
@@ -328,7 +332,7 @@ bool mg_is_canvas_backend_available(mg_backend_id backend)
 		#if MG_COMPILE_BACKEND_METAL
 			case MG_BACKEND_METAL:
 		#endif
-		#if MG_COMPILE_BACKEND_GL && defined(OS_WIN64)
+		#if MG_COMPILE_BACKEND_GL && defined(PLATFORM_WIN64)
 			case MG_BACKEND_GL:
 		#endif
 			result = true;
@@ -417,9 +421,9 @@ mg_surface mg_surface_create_host(mp_window window)
 	}
 	mg_surface handle = mg_surface_nil();
 	mg_surface_data* surface = 0;
-	#if OS_MACOS
+	#if PLATFORM_MACOS
 		surface = mg_osx_surface_create_host(window);
-	#elif OS_WIN64
+	#elif PLATFORM_WIN64
 		surface = mg_win32_surface_create_host(window);
 	#endif
 

src/graphics.h

@@ -26,7 +26,7 @@ typedef enum {
 
 //NOTE: these macros are used to select which backend to include when building milepost
 //      they can be overridden by passing them to the compiler command line
-#if defined(OS_MACOS)
+#if defined(PLATFORM_MACOS)
 	#ifndef MG_COMPILE_BACKEND_METAL
 		#define MG_COMPILE_BACKEND_METAL 1
 	#endif
@@ -45,7 +45,7 @@ typedef enum {
 		#define MG_BACKEND_DEFAULT MG_BACKEND_NONE
 	#endif
 
-#elif defined(OS_WIN64)
+#elif defined(PLATFORM_WIN64)
 	#ifndef MG_COMPILE_BACKEND_GL
 		#define MG_COMPILE_BACKEND_GL 1
 	#endif
@@ -60,7 +60,7 @@ typedef enum {
 		#define MG_BACKEND_DEFAULT MG_BACKEND_NONE
 	#endif
 
-#elif defined(OS_LINUX)
+#elif defined(PLATFORM_LINUX)
 	#ifndef MG_COMPILE_BACKEND_GL
 		#define MG_COMPILE_BACKEND_GL 1
 	#endif

src/milepost.c

@@ -22,12 +22,12 @@
 //---------------------------------------------------------------
 #include"platform.h"
 
-#if defined(OS_WIN64)
+#if defined(PLATFORM_WIN64)
-	#include"platform/win32_base_allocator.c"
+	#include"platform/win32_memory.c"
 	#include"platform/win32_clock.c"
 	//TODO
-#elif defined(OS_MACOS)
+#elif defined(PLATFORM_MACOS)
-	#include"platform/unix_base_allocator.c"
+	#include"platform/unix_memory.c"
 	#include"platform/osx_clock.c"
 	/*
 	#include"platform/unix_rng.c"
@@ -35,8 +35,8 @@
 	#include"platform/posix_socket.c"
 	*/
 
-#elif defined(OS_LINUX)
+#elif defined(PLATFORM_LINUX)
-	#include"platform/unix_base_allocator.c"
+	#include"platform/unix_base_memory.c"
 	#include"platform/linux_clock.c"
 	/*
 	#include"platform/unix_rng.c"
@@ -51,7 +51,7 @@
 // app/graphics layer
 //---------------------------------------------------------------
 
-#if defined(OS_WIN64)
+#if defined(PLATFORM_WIN64)
 	#include"win32_app.c"
 	#include"graphics.c"
 
@@ -68,7 +68,7 @@
 		#include"egl_surface.c"
 	#endif
 
-#elif defined(OS_MACOS)
+#elif defined(PLATFORM_MACOS)
 	//NOTE: macos application layer and graphics backends are defined in milepost.m
 #else
 	#error "Unsupported platform"

src/mp_app_internal.h

@@ -14,9 +14,9 @@
 #include"platform.h"
 #include"ringbuffer.h"
 
-#if defined(OS_WIN64) || defined(OS_WIN32)
+#if defined(PLATFORM_WIN64) || defined(PLATFORM_WIN32)
 	#include"win32_app.h"
-#elif defined(OS_MACOS)
+#elif defined(PLATFORM_MACOS)
 	#include"osx_app.h"
 #else
 	#error "platform not supported yet"

src/platform/orca_memory.c

@@ -0,0 +1,87 @@
+/************************************************************//**
+*
+*	@file: orca_memory.c
+*	@author: Martin Fouilleul
+*	@date: 17/04/2023
+*
+*****************************************************************/
+
+#include"platform_memory.h"
+
+extern void* orca_mem_grow(u64 size);
+
+void* orca_mem_base_reserve(mem_base_allocator* context, u64 size)
+{
+	return(orca_mem_grow(size));
+}
+
+void orca_mem_base_nop(mem_base_allocator* context, void* ptr, u64 size) {}
+
+mem_base_allocator* mem_base_allocator_default()
+{
+	static mem_base_allocator base = {0};
+	if(base.reserve == 0)
+	{
+		base.reserve = orca_mem_base_reserve;
+		base.commit = orca_mem_base_nop;
+		base.decommit = orca_mem_base_nop;
+		base.release = orca_mem_base_nop;
+	}
+	return(&base);
+}
+
+
+//TODO: implement malloc/realloc/free/memset/etc here...
+
+
+void* memset(void* b, int c, size_t n)
+{
+	for(size_t i = 0; i<n; i++)
+	{
+		((char*)b)[i] = (u8)c;
+	}
+	return(b);
+}
+
+void* memcpy(void *restrict dst, const void *restrict src, size_t n)
+{
+	for(size_t i = 0; i<n; i++)
+	{
+		((char*)dst)[i] = ((char*)src)[i];
+	}
+	return(dst);
+}
+
+void* memmove(void *dst, const void *src, size_t n)
+{
+	if(src < dst)
+	{
+		for(size_t i = n-1; i>=0; i--)
+		{
+			((char*)dst)[i] = ((char*)src)[i];
+		}
+	}
+	else if(src > dst)
+	{
+		for(size_t i = 0; i<n; i++)
+		{
+			((char*)dst)[i] = ((char*)src)[i];
+		}
+	}
+	return(dst);
+}
+
+int memcmp(const void *s1, const void *s2, size_t n)
+{
+	const unsigned char* c1 = (const unsigned char*)s1;
+	const unsigned char* c2 = (const unsigned char*)s2;
+
+	for(size_t i = 0; i<n; i++)
+	{
+		if(c1[i] != c2[i])
+		{
+			return(c1 - c2);
+		}
+	}
+	return(0);
+}

src/platform/platform.h

@@ -33,17 +33,17 @@
 // OS identification
 //-----------------------------------------------------------------
 #if defined(_WIN64)
-	#define OS_WIN64 1
+	#define PLATFORM_WIN64 1
 #elif defined(_WIN32)
 	#error "Unsupported OS (32bit only version of Windows)"
 #elif defined(__APPLE__) && defined(__MACH__)
-	#define OS_MACOS 1
+	#define PLATFORM_MACOS 1
 #elif defined(__gnu_linux__)
-	#define OS_LINUX 1
+	#define PLATFORM_LINUX 1
 #elif defined(__ORCA__)
-	#define OS_ORCA 1
+	#define PLATFORM_ORCA 1
 #else
-	#error "Can't identify OS"
+	#error "Can't identify platform"
 #endif
 
 //-----------------------------------------------------------------

src/platform/platform_base_allocator.h

@@ -1,28 +0,0 @@
-/************************************************************//**
-*
-*	@file: platform_base_allocator.h
-*	@author: Martin Fouilleul
-*	@date: 10/09/2021
-*	@revision:
-*
-*****************************************************************/
-#ifndef __PLATFORM_BASE_ALLOCATOR_H_
-#define __PLATFORM_BASE_ALLOCATOR_H_
-
-#include"typedefs.h"
-#include"memory.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-void* mem_base_reserve_mmap(void* context, u64 size);
-void mem_base_release_mmap(void* context, void* ptr, u64 size);
-
-mem_base_allocator* mem_base_allocator_default();
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif //__PLATFORM_BASE_ALLOCATOR_H_

src/platform/platform_memory.h

@@ -0,0 +1,74 @@
+/************************************************************//**
+*
+*	@file: platform_memory.h
+*	@author: Martin Fouilleul
+*	@date: 10/09/2021
+*	@revision:
+*
+*****************************************************************/
+#ifndef __PLATFORM_MEMORY_H_
+#define __PLATFORM_MEMORY_H_
+
+#include"typedefs.h"
+#include"platform.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------------------
+//NOTE(martin): base allocator
+//--------------------------------------------------------------------------------
+typedef struct mem_base_allocator mem_base_allocator;
+
+typedef void*(*mem_reserve_function)(mem_base_allocator* context, u64 size);
+typedef void(*mem_modify_function)(mem_base_allocator* context, void* ptr, u64 size);
+
+typedef struct mem_base_allocator
+{
+	mem_reserve_function reserve;
+	mem_modify_function commit;
+	mem_modify_function decommit;
+	mem_modify_function release;
+
+} mem_base_allocator;
+
+MP_API mem_base_allocator* mem_base_allocator_default();
+
+#define mem_base_reserve(base, size) base->reserve(base, size)
+#define mem_base_commit(base, ptr, size) base->commit(base, ptr, size)
+#define mem_base_decommit(base, ptr, size) base->decommit(base, ptr, size)
+#define mem_base_release(base, ptr, size) base->release(base, ptr, size)
+
+//--------------------------------------------------------------------------------
+//NOTE(martin): malloc/free
+//--------------------------------------------------------------------------------
+#if PLATFORM_ORCA
+	void* malloc(size_t size);
+	void* realloc(void* ptr, size_t size);
+	void free(void* ptr);
+#else
+	#include<stdlib.h>
+#endif
+
+#define malloc_type(type) ((type*)malloc(sizeof(type)))
+#define malloc_array(type, count) ((type*)malloc(sizeof(type)*count))
+
+//--------------------------------------------------------------------------------
+//NOTE(martin): memset / memcpy
+//--------------------------------------------------------------------------------
+
+#if PLATFORM_ORCA
+	void* memset(void *b, int c, size_t len);
+	void* memcpy(void *restrict dst, const void *restrict src, size_t n);
+	void* memmove(void *dst, const void *src, size_t len);
+	int memcmp(const void *s1, const void *s2, size_t n);
+#else
+	#include<string.h>
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif //__PLATFORM_MEMORY_H_

src/platform/unix_memory.c

@@ -1,25 +1,25 @@
 /************************************************************//**
 *
-*	@file: unix_base_allocator.c
+*	@file: unix_memory.c
 *	@author: Martin Fouilleul
 *	@date: 10/09/2021
 *	@revision:
 *
 *****************************************************************/
 #include<sys/mman.h>
-#include"platform_base_allocator.h"
+#include"platform_memory.h"
 
 /*NOTE(martin):
 	Linux and MacOS don't make a distinction between reserved and committed memory, contrary to Windows
 */
-void mem_base_nop(void* context, void* ptr, u64 size) {}
+void mem_base_nop(mem_base_allocator* context, void* ptr, u64 size) {}
 
-void* mem_base_reserve_mmap(void* context, u64 size)
+void* mem_base_reserve_mmap(mem_base_allocator* context, u64 size)
 {
 	return(mmap(0, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 0, 0));
 }
 
-void mem_base_release_mmap(void* context, void* ptr, u64 size)
+void mem_base_release_mmap(mem_base_allocator* context, void* ptr, u64 size)
 {
 	munmap(ptr, size);
 }

src/platform/win32_memory.c

@@ -1,6 +1,6 @@
 /************************************************************//**
 *
-*	@file: win32_base_allocator.c
+*	@file: win32_memory.c
 *	@author: Martin Fouilleul
 *	@date: 17/12/2022
 *	@revision:
@@ -8,27 +8,25 @@
 *****************************************************************/
 #define WIN32_LEAN_AND_MEAN
 #include<windows.h>
-#include"platform_base_allocator.h"
+#include"platform_memory.h"
 
-void mem_base_nop(void* context, void* ptr, u64 size) {}
+void* mem_base_reserve_win32(mem_base_allocator* context, u64 size)
-
-void* mem_base_reserve_win32(void* context, u64 size)
 {
 	void* result = VirtualAlloc(0, size, MEM_RESERVE, PAGE_READWRITE);
 	return(result);
 }
 
-void mem_base_commit_win32(void* context, void* ptr, u64 size)
+void mem_base_commit_win32(mem_base_allocator* context, void* ptr, u64 size)
 {
 	VirtualAlloc(ptr, size, MEM_COMMIT, PAGE_READWRITE);
 }
 
-void mem_base_release_win32(void* context, void* ptr, u64 size)
+void mem_base_release_win32(mem_base_allocator* context, void* ptr, u64 size)
 {
 	VirtualFree(ptr, size, MEM_RELEASE);
 }
 
-void mem_base_decommit_win32(void* context, void* ptr, u64 size)
+void mem_base_decommit_win32(mem_base_allocator* context, void* ptr, u64 size)
 {
 	VirtualFree(ptr, size, MEM_DECOMMIT);
 }

src/ui.c

@@ -2340,9 +2340,9 @@ typedef struct ui_edit_command
 
 } ui_edit_command;
 
-#if OS_WIN64
+#if PLATFORM_WIN64
 	#define OS_COPY_PASTE_MOD MP_KEYMOD_CTRL
-#elif OS_MACOS
+#elif PLATFORM_MACOS
 	#define OS_COPY_PASTE_MOD MP_KEYMOD_CMD
 #endif
 

src/util/macro_helpers.h

@@ -21,11 +21,6 @@
 //TODO(martin): this is a compiler-specific attribute, recognized by clang and gcc. See if there's a more portable approach
 //#define INLINE_GEN __attribute__((used)) static inline
 
-
-//NOTE(martin): typed and array mallocs
-#define malloc_type(type) ((type*)malloc(sizeof(type)))
-#define malloc_array(type, count) ((type*)malloc(sizeof(type)*count))
-
 //NOTE(martin): 'hygienic' templates, to replace macros and avoid multiple evaluation problems.
 #ifdef __cplusplus
 	//NOTE(martin): in C++ we use templates and decltype/declval
@@ -128,9 +123,11 @@ static inline u64 next_pow2_u64(u64 x)
 //NOTE: assert macros
 
 #ifndef NO_ASSERT
-	#ifdef OS_ORCA
+	#ifdef PLATFORM_ORCA
 		//TODO add a runtime-provided assert
-		#define _ASSERT_(x, msg)
+		extern void orca_assert(bool x);
+
+		#define _ASSERT_(x, msg) orca_assert(x)
 	#else
 		#include<assert.h>
 		#define _ASSERT_(x, msg) assert(x && msg)

src/util/memory.c

@@ -6,19 +6,43 @@
 *	@revision:
 *
 *****************************************************************/
-#include<string.h> // memset
-
 #include"platform.h"
 #include"memory.h"
-#include"platform_base_allocator.h"
+#include"platform_memory.h"
 #include"macro_helpers.h"
 
+#if PLATFORM_ORCA
+	static const u32 MEM_ARENA_DEFAULT_RESERVE_SIZE = 1<<20;
+#else
 	static const u32 MEM_ARENA_DEFAULT_RESERVE_SIZE = 1<<30;
-static const u32 MEM_ARENA_COMMIT_ALIGNMENT = 1<<20;
+#endif
+
+static const u32 MEM_ARENA_COMMIT_ALIGNMENT = 4<<10;
 
 //--------------------------------------------------------------------------------
 //NOTE(martin): memory arena
 //--------------------------------------------------------------------------------
+
+mem_arena_chunk* mem_arena_chunk_alloc(mem_arena* arena, u64 reserveSize)
+{
+	reserveSize = AlignUpOnPow2(reserveSize, MEM_ARENA_COMMIT_ALIGNMENT);
+	u64 commitSize = AlignUpOnPow2(sizeof(mem_arena_chunk), MEM_ARENA_COMMIT_ALIGNMENT);
+
+	char* mem = mem_base_reserve(arena->base, reserveSize);
+	mem_base_commit(arena->base, mem, commitSize);
+
+	mem_arena_chunk* chunk = (mem_arena_chunk*)mem;
+
+	chunk->ptr = mem;
+	chunk->cap = reserveSize;
+	chunk->offset = sizeof(mem_arena_chunk);
+	chunk->committed = commitSize;
+
+	list_push_back(&arena->chunks, &chunk->listElt);
+
+	return(chunk);
+}
+
 void mem_arena_init(mem_arena* arena)
 {
 	mem_arena_init_with_options(arena, &(mem_arena_options){0});
@@ -26,42 +50,69 @@ void mem_arena_init(mem_arena* arena)
 
 void mem_arena_init_with_options(mem_arena* arena, mem_arena_options* options)
 {
-	arena->base = options->base ? options->base : mem_base_allocator_default();
+	memset(arena, 0, sizeof(mem_arena));
-	arena->cap = options->reserve ? options->reserve : MEM_ARENA_DEFAULT_RESERVE_SIZE;
 
-	arena->ptr = mem_base_reserve(arena->base, arena->cap);
+	arena->base = options->base ? options->base : mem_base_allocator_default();
-	arena->committed = 0;
+
-	arena->offset = 0;
+	u64 reserveSize = options->reserve ? (options->reserve + sizeof(mem_arena_chunk)) : MEM_ARENA_DEFAULT_RESERVE_SIZE;
+
+	arena->currentChunk = mem_arena_chunk_alloc(arena, reserveSize);
 }
 
 void mem_arena_release(mem_arena* arena)
 {
-	mem_base_release(arena->base, arena->ptr, arena->cap);
+	for_list_safe(&arena->chunks, chunk, mem_arena_chunk, listElt)
+	{
+		mem_base_release(arena->base, chunk, chunk->cap);
+	}
 	memset(arena, 0, sizeof(mem_arena));
 }
 
 void* mem_arena_alloc(mem_arena* arena, u64 size)
 {
-	u64 nextOffset = arena->offset + size;
+	mem_arena_chunk* chunk = arena->currentChunk;
-	ASSERT(nextOffset <= arena->cap);
+	ASSERT(chunk);
 
-	if(nextOffset > arena->committed)
+	u64 nextOffset = chunk->offset + size;
+	u64 lastCap = chunk->cap;
+	while(chunk && nextOffset > chunk->cap)
+	{
+		chunk = list_next_entry(&arena->chunks, chunk, mem_arena_chunk, listElt);
+		nextOffset = chunk->offset + size;
+		lastCap = chunk->cap;
+	}
+	if(!chunk)
+	{
+		u64 reserveSize = maximum(lastCap * 1.5, size);
+
+		chunk = mem_arena_chunk_alloc(arena, reserveSize);
+		nextOffset = chunk->offset + size;
+	}
+	ASSERT(nextOffset <= chunk->cap);
+
+	arena->currentChunk = chunk;
+
+	if(nextOffset > chunk->committed)
 	{
 		u64 nextCommitted = AlignUpOnPow2(nextOffset, MEM_ARENA_COMMIT_ALIGNMENT);
-		nextCommitted = ClampHighBound(nextCommitted, arena->cap);
+		nextCommitted = ClampHighBound(nextCommitted, chunk->cap);
-		u64 commitSize = nextCommitted - arena->committed;
+		u64 commitSize = nextCommitted - chunk->committed;
-		mem_base_commit(arena->base, arena->ptr + arena->committed, commitSize);
+		mem_base_commit(arena->base, chunk->ptr + chunk->committed, commitSize);
-		arena->committed = nextCommitted;
+		chunk->committed = nextCommitted;
 	}
-	char* p = arena->ptr + arena->offset;
+	char* p = chunk->ptr + chunk->offset;
-	arena->offset += size;
+	chunk->offset += size;
 
 	return(p);
 }
 
 void mem_arena_clear(mem_arena* arena)
 {
-	arena->offset = 0;
+	for_list(&arena->chunks, chunk, mem_arena_chunk, listElt)
+	{
+		chunk->offset = sizeof(mem_arena_chunk);
+	}
+	arena->currentChunk = list_first_entry(&arena->chunks, mem_arena_chunk, listElt);
 }
 
 //--------------------------------------------------------------------------------
@@ -98,7 +149,6 @@ void* mem_pool_alloc(mem_pool* pool)
 
 void mem_pool_recycle(mem_pool* pool, void* ptr)
 {
-	ASSERT((((char*)ptr) >= pool->arena.ptr) && (((char*)ptr) < (pool->arena.ptr + pool->arena.offset)));
 	list_push(&pool->freeList, (list_elt*)ptr);
 }
 
@@ -117,7 +167,7 @@ mp_thread_local mem_arena __scratchArena = {0};
 
 mem_arena* mem_scratch()
 {
-	if(__scratchArena.ptr == 0)
+	if(__scratchArena.base == 0)
 	{
 		mem_arena_init(&__scratchArena);
 	}

src/util/memory.h

@@ -9,46 +9,33 @@
 #ifndef __MEMORY_H_
 #define __MEMORY_H_
 
-#include"typedefs.h"
+#include"util/typedefs.h"
-#include"lists.h"
+#include"util/lists.h"
+#include"platform/platform_memory.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-//--------------------------------------------------------------------------------
-//NOTE(martin): base allocator
-//--------------------------------------------------------------------------------
-typedef void*(*mem_reserve_function)(void* context, u64 size);
-typedef void(*mem_modify_function)(void* context, void* ptr, u64 size);
-
-typedef struct mem_base_allocator
-{
-	mem_reserve_function reserve;
-	mem_modify_function commit;
-	mem_modify_function decommit;
-	mem_modify_function release;
-	void* context;
-
-} mem_base_allocator;
-
-MP_API mem_base_allocator* mem_base_allocator_default();
-
-#define mem_base_reserve(base, size) base->reserve(base->context, size)
-#define mem_base_commit(base, ptr, size) base->commit(base->context, ptr, size)
-#define mem_base_decommit(base, ptr, size) base->decommit(base->context, ptr, size)
-#define mem_base_release(base, ptr, size) base->release(base->context, ptr, size)
-
 //--------------------------------------------------------------------------------
 //NOTE(martin): memory arena
 //--------------------------------------------------------------------------------
-typedef struct mem_arena
+
+typedef struct mem_arena_chunk
 {
-	mem_base_allocator* base;
+	list_elt listElt;
 	char* ptr;
 	u64 offset;
 	u64 committed;
 	u64 cap;
+} mem_arena_chunk;
+
+typedef struct mem_arena
+{
+	mem_base_allocator* base;
+	list_info chunks;
+	mem_arena_chunk* currentChunk;
+
 } mem_arena;
 
 typedef struct mem_arena_options

src/util/typedefs.h

@@ -10,7 +10,8 @@
 #ifndef __TYPEDEFS_H_
 #define __TYPEDEFS_H_
 
-#include<inttypes.h>
+#include<stddef.h>
+#include<stdint.h>
 #include<float.h>	//FLT_MAX/MIN etc...
 
 #ifndef __cplusplus