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Remove fixed size concept from MemArena

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This commit is contained in:
doyle 2019-09-20 21:29:57 +10:00
parent 1c2b67892f
commit e63e047550
4 changed files with 249 additions and 870 deletions
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472
Code/Dqn.h
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@ -564,42 +564,53 @@ DQN_HEADER_COPY_PROTOTYPE(template <typename T> T *, Dqn_MemZero(T *src))
return result; return result;
} }
// @ -------------------------------------------------------------------------------------------------
// @
// @ NOTE: Dqn_Allocator
// @
// @ -------------------------------------------------------------------------------------------------
DQN_HEADER_COPY_BEGIN
// NOTE: The default allocator is the heap allocator
enum struct Dqn_Allocator_Type
{
Heap, // Malloc, realloc, free
XHeap, // Malloc realloc, free, crash on failure
Arena,
NullAllocator,
};
struct Dqn_Allocator
{
Dqn_Allocator_Type type;
void *data;
};
DQN_HEADER_COPY_END
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
// @ // @
// @ NOTE: Dqn_MemArena // @ NOTE: Dqn_MemArena
// @ // @
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
DQN_HEADER_COPY_BEGIN DQN_HEADER_COPY_BEGIN
using Dqn_MemSize = Dqn_usize;
struct Dqn_MemBlock struct Dqn_MemBlock
{ {
// NOTE: Read only state
Dqn_b32 allocated_by_user_or_fixed_mem;
void *memory; void *memory;
Dqn_MemSize size; Dqn_usize size;
Dqn_MemSize used; Dqn_usize used;
Dqn_MemBlock *prev; Dqn_MemBlock *prev;
Dqn_MemBlock *next; Dqn_MemBlock *next;
}; };
enum Dqn_MemArenaFlag
{
Dqn_MemArenaFlag_NoCRTAllocation = (1 << 0), // If my_calloc/my_free aren't null, it defaults to calloc and free, setting this flag disables that
};
struct Dqn_MemArena struct Dqn_MemArena
{ {
// NOTE: Configuration (fill once) // NOTE: Configuration (fill once after "Zero Initialisation {}")
void *(*my_calloc)(Dqn_usize bytes); // If nullptr, use CRT calloc unless disabled in flags int min_block_size = DQN_KILOBYTES(4);
void (*my_free) (void *ptr, Dqn_usize bytes_to_free); // If nullptr, use CRT free unless disabled in flags Dqn_Allocator allocator;
Dqn_u32 flags;
// NOTE: Read Only // NOTE: Read Only
Dqn_u8 fixed_mem[DQN_KILOBYTES(16)];
Dqn_MemBlock fixed_mem_block;
Dqn_MemBlock *curr_mem_block; Dqn_MemBlock *curr_mem_block;
Dqn_MemBlock *top_mem_block; Dqn_MemBlock *top_mem_block;
Dqn_MemSize highest_used_mark; Dqn_usize highest_used_mark;
int total_allocated_mem_blocks; int total_allocated_mem_blocks;
}; };
@ -621,12 +632,11 @@ struct Dqn_MemArenaScopedRegion
#define DQN_DEBUG_PARAMS #define DQN_DEBUG_PARAMS
#endif #endif
#define DQN_MEM_ARENA_INIT_MEMORY(arena, src, size) Dqn_MemArena_InitMemory(arena, src, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC(arena, size) Dqn_MemArena_Alloc(arena, size DQN_DEBUG_PARAMS) #define DQN_MEM_ARENA_ALLOC(arena, size) Dqn_MemArena_Alloc(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_ARRAY(arena, T, num) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) * num DQN_DEBUG_PARAMS) #define DQN_MEM_ARENA_ALLOC_ARRAY(arena, T, num) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) * num DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_STRUCT(arena, T) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) DQN_DEBUG_PARAMS) #define DQN_MEM_ARENA_ALLOC_STRUCT(arena, T) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_RESERVE(arena, size) Dqn_MemArena_Reserve(arena, size DQN_DEBUG_PARAMS) #define DQN_MEM_ARENA_RESERVE(arena, size) Dqn_MemArena_Reserve(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_RESERVE_FROM(arena, src, size) Dqn_MemArena_ReserveFrom(arena, src, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_CLEAR_USED(arena) Dqn_MemArena_ClearUsed(arena DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_FREE(arena) Dqn_MemArena_Free #define DQN_MEM_ARENA_FREE(arena) Dqn_MemArena_Free
DQN_HEADER_COPY_END DQN_HEADER_COPY_END
@ -639,8 +649,8 @@ DQN_HEADER_COPY_BEGIN
struct Dqn_StringBuilderBuffer struct Dqn_StringBuilderBuffer
{ {
char *mem; char *mem;
Dqn_MemSize size; Dqn_usize size;
Dqn_MemSize used; usize used;
Dqn_StringBuilderBuffer *next; Dqn_StringBuilderBuffer *next;
}; };
@ -648,11 +658,9 @@ Dqn_usize constexpr DQN_STRING_BUILDER_MIN_MEM_BUF_ALLOC_SIZE = DQN_KILOBYTES(4)
template <Dqn_usize N = DQN_KILOBYTES(16)> template <Dqn_usize N = DQN_KILOBYTES(16)>
struct Dqn_StringBuilder struct Dqn_StringBuilder
{ {
void *(*my_malloc)(size_t bytes) = malloc; // Set to nullptr to disable heap allocation Dqn_Allocator allocator;
void (*my_free) (void *ptr) = free; // Set to nullptr to disable heap allocation
char fixed_mem[N]; char fixed_mem[N];
Dqn_MemSize fixed_mem_used; Dqn_usize fixed_mem_used;
Dqn_StringBuilderBuffer *next_mem_buf; Dqn_StringBuilderBuffer *next_mem_buf;
Dqn_StringBuilderBuffer *last_mem_buf; Dqn_StringBuilderBuffer *last_mem_buf;
Dqn_isize string_len; Dqn_isize string_len;
@ -675,16 +683,13 @@ template <Dqn_usize N> DQN_FILE_SCOPE char *Dqn_StringBuilder__GetWriteBufferAnd
if (space < size_required) if (space < size_required)
{ {
DQN_ASSERT(builder->my_malloc);
if (!builder->my_malloc)
return nullptr;
// NOTE: Need to allocate new buf // NOTE: Need to allocate new buf
Dqn_usize allocation_size = sizeof(*builder->last_mem_buf) + DQN_MAX(size_required, DQN_STRING_BUILDER_MIN_MEM_BUF_ALLOC_SIZE); Dqn_usize allocation_size = sizeof(*builder->last_mem_buf) + DQN_MAX(size_required, DQN_STRING_BUILDER_MIN_MEM_BUF_ALLOC_SIZE);
void *memory = builder->my_malloc(allocation_size); void *memory = Dqn_Allocator_Allocate(&builder->allocator, allocation_size);
auto *new_buf = reinterpret_cast<Dqn_StringBuilderBuffer *>(memory); if (!memory) return nullptr;
auto *new_buf = DQN_CAST(Dqn_StringBuilderBuffer *)memory;
*new_buf = {}; *new_buf = {};
new_buf->mem = static_cast<char *>(memory) + sizeof(*new_buf); new_buf->mem = DQN_CAST(char *)memory + sizeof(*new_buf);
new_buf->size = allocation_size; new_buf->size = allocation_size;
result = new_buf->mem; result = new_buf->mem;
usage = &new_buf->used; usage = &new_buf->used;
@ -746,11 +751,6 @@ template <Dqn_usize N> DQN_FILE_SCOPE void Dqn_StringBuilder__BuildOutput(Dqn_St
DQN_ASSERT(buf_ptr == dest + dest_size); DQN_ASSERT(buf_ptr == dest + dest_size);
} }
// -----------------------------------------------------------------------------------------------
//
// NOTE: String Builder
//
// -----------------------------------------------------------------------------------------------
// @ The necessary length to build the string, it returns the length including the null-terminator // @ The necessary length to build the string, it returns the length including the null-terminator
DQN_HEADER_COPY_PROTOTYPE(template <Dqn_usize N> Dqn_isize, Dqn_StringBuilder_BuildLen(Dqn_StringBuilder<N> const *builder)) DQN_HEADER_COPY_PROTOTYPE(template <Dqn_usize N> Dqn_isize, Dqn_StringBuilder_BuildLen(Dqn_StringBuilder<N> const *builder))
{ {
@ -817,6 +817,22 @@ DQN_HEADER_COPY_PROTOTYPE(template <Dqn_usize N> void, Dqn_StringBuilder_AppendC
buf[1] = 0; buf[1] = 0;
} }
DQN_HEADER_COPY_PROTOTYPE(template <Dqn_usize N> void, Dqn_StringBuilder_Free(Dqn_StringBuilder<N> *builder))
{
for (Dqn_StringBuilderBuffer *buffer = builder->next_mem_buf;
buffer;
)
{
Dqn_StringBuilderBuffer buffer_to_free = buffer;
buffer = buffer->next;
Dqn_Allocator_Free(&builder->allocator, buffer_to_free);
}
builder->next_mem_buf = builder->last_mem_buf = nullptr;
builder->fixed_mem_used = 0;
builder->string_len = 0;
}
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
// @ // @
// @ NOTE: Dqn_Slices // @ NOTE: Dqn_Slices
@ -1072,22 +1088,6 @@ template <typename T, int MAX_> T *Dqn_FixedStack_Push (Dqn_FixedStack<T, MAX_
template <typename T, int MAX_> void Dqn_FixedStack_Clear(Dqn_FixedStack<T, MAX_> *array) { Dqn_FixedArray_Clear(array); } template <typename T, int MAX_> void Dqn_FixedStack_Clear(Dqn_FixedStack<T, MAX_> *array) { Dqn_FixedArray_Clear(array); }
DQN_HEADER_COPY_END DQN_HEADER_COPY_END
DQN_HEADER_COPY_BEGIN
enum struct Dqn_Allocator_Type
{
Heap, // Malloc, realloc, free
XHeap, // Malloc realloc, free, crash on failure
Arena,
NullAllocator,
};
struct Dqn_Allocator
{
Dqn_Allocator_Type type;
void *data;
};
DQN_HEADER_COPY_END
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
// @ // @
// @ NOTE: Dqn_Array // @ NOTE: Dqn_Array
@ -1335,213 +1335,8 @@ DQN_HEADER_COPY_PROTOTYPE(void, Dqn_Log(Dqn_LogType type, char const *file, Dqn_
va_end(va); va_end(va);
} }
// @ ------------------------------------------------------------------------------------------------- void *Dqn_MemArena_Alloc(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
// @ Dqn_b32 Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
// @ NOTE: Dqn_MemArena
// @
// @ -------------------------------------------------------------------------------------------------
DQN_FILE_SCOPE Dqn_MemBlock *Dqn_MemArena__AllocateBlock(Dqn_MemArena *arena, Dqn_usize requested_size)
{
Dqn_usize mem_block_size = DQN_MAX(Dqn_ArrayCount(arena->fixed_mem), requested_size);
Dqn_usize const allocate_size = sizeof(*arena->curr_mem_block) + mem_block_size;
Dqn_MemBlock *result = nullptr;
if (arena->my_calloc)
{
DQN_ASSERT(arena->my_free);
result = static_cast<Dqn_MemBlock *>(arena->my_calloc(allocate_size));
}
else
{
if (!(arena->flags & Dqn_MemArenaFlag_NoCRTAllocation))
result = static_cast<Dqn_MemBlock *>(calloc(1, allocate_size));
}
if (!result)
return result;
*result = {};
result->size = mem_block_size;
result->memory = reinterpret_cast<Dqn_u8 *>(result) + sizeof(*result);
arena->total_allocated_mem_blocks++;
return result;
}
DQN_FILE_SCOPE void Dqn_MemArena__FreeBlock(Dqn_MemArena *arena, Dqn_MemBlock *block)
{
if (!block)
return;
if (block->next)
block->next->prev = block->prev;
if (block->prev)
block->prev->next = block->next;
if (!block->allocated_by_user_or_fixed_mem)
{
if (arena->my_free)
{
DQN_ASSERT(arena->my_calloc);
arena->my_free(block, sizeof(*block) + block->size);
}
else
{
if (!(arena->flags & Dqn_MemArenaFlag_NoCRTAllocation))
free(block);
}
}
}
DQN_FILE_SCOPE void Dqn_MemArena__AttachBlock(Dqn_MemArena *arena, Dqn_MemBlock *new_block)
{
DQN_ASSERT(arena->curr_mem_block);
DQN_ASSERT(arena->top_mem_block->next == nullptr);
arena->top_mem_block->next = new_block;
new_block->prev = arena->top_mem_block;
arena->top_mem_block = new_block;
}
DQN_FILE_SCOPE void Dqn_MemArena__LazyInit(Dqn_MemArena *arena)
{
if (!arena->curr_mem_block)
{
DQN_ASSERT(!arena->top_mem_block);
arena->fixed_mem_block = {};
arena->fixed_mem_block.allocated_by_user_or_fixed_mem = true;
arena->fixed_mem_block.memory = arena->fixed_mem;
arena->fixed_mem_block.size = Dqn_ArrayCount(arena->fixed_mem);
arena->curr_mem_block = &arena->fixed_mem_block;
arena->top_mem_block = arena->curr_mem_block;
}
}
DQN_HEADER_COPY_PROTOTYPE(void *, Dqn_MemArena_Alloc(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
Dqn_MemArena__LazyInit(arena);
Dqn_b32 need_new_mem_block = true;
for (Dqn_MemBlock *mem_block = arena->curr_mem_block; mem_block; mem_block = mem_block->next)
{
Dqn_b32 can_fit_in_block = (mem_block->used + size) <= mem_block->size;
if (can_fit_in_block)
{
arena->curr_mem_block = mem_block;
need_new_mem_block = false;
break;
}
}
if (need_new_mem_block)
{
Dqn_MemBlock *new_block = Dqn_MemArena__AllocateBlock(arena, size);
if (!new_block) return nullptr;
Dqn_MemArena__AttachBlock(arena, new_block);
arena->curr_mem_block = arena->top_mem_block;
}
void *result = static_cast<Dqn_u8 *>(arena->curr_mem_block->memory) + arena->curr_mem_block->used;
arena->curr_mem_block->used += size;
DQN_ASSERT(arena->curr_mem_block->used <= arena->curr_mem_block->size);
return result;
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_Free(Dqn_MemArena *arena DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
for (Dqn_MemBlock *mem_block = arena->top_mem_block; mem_block;)
{
Dqn_MemBlock *block_to_free = mem_block;
mem_block = block_to_free->prev;
Dqn_MemArena__FreeBlock(arena, block_to_free);
}
auto my_calloc = arena->my_calloc;
auto my_free = arena->my_free;
auto highest_used_mark = arena->highest_used_mark;
*arena = {};
arena->highest_used_mark = highest_used_mark;
arena->my_calloc = my_calloc;
arena->my_free = my_free;
}
DQN_HEADER_COPY_PROTOTYPE(Dqn_b32, Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
Dqn_MemArena__LazyInit(arena);
Dqn_MemSize remaining_space = arena->top_mem_block->size - arena->top_mem_block->used;
if (remaining_space >= size) return true;
Dqn_MemBlock *new_block = Dqn_MemArena__AllocateBlock(arena, size);
if (!new_block) return false;
Dqn_MemArena__AttachBlock(arena, new_block);
return true;
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_ReserveFrom(Dqn_MemArena *arena, void *memory, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
DQN_ASSERT_MSG(size >= sizeof(*arena->curr_mem_block),
"(%zu >= %zu) There needs to be enough space to encode the Dqn_MemBlock struct into the memory buffer", size, sizeof(*arena->curr_mem_block));
Dqn_MemArena__LazyInit(arena);
auto *mem_block = static_cast<Dqn_MemBlock *>(memory);
*mem_block = {};
mem_block->memory = static_cast<Dqn_u8 *>(memory) + sizeof(*mem_block);
mem_block->size = size - sizeof(*mem_block);
mem_block->allocated_by_user_or_fixed_mem = true;
Dqn_MemArena__AttachBlock(arena, mem_block);
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_ClearUsed(Dqn_MemArena *arena DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
for (Dqn_MemBlock *mem_block = arena->top_mem_block; mem_block; mem_block = mem_block->prev)
mem_block->used = 0;
arena->curr_mem_block = &arena->fixed_mem_block;
}
DQN_HEADER_COPY_PROTOTYPE(Dqn_MemArenaScopedRegion, Dqn_MemArena_MakeScopedRegion(Dqn_MemArena *arena))
{
return Dqn_MemArenaScopedRegion(arena);
}
Dqn_MemArenaScopedRegion::Dqn_MemArenaScopedRegion(Dqn_MemArena *arena)
{
this->arena = arena;
this->curr_mem_block = arena->curr_mem_block;
this->curr_mem_block_used = (arena->curr_mem_block) ? arena->curr_mem_block->used : 0;
this->top_mem_block = arena->top_mem_block;
}
Dqn_MemArenaScopedRegion::~Dqn_MemArenaScopedRegion()
{
while (this->top_mem_block != this->arena->top_mem_block)
{
Dqn_MemBlock *block_to_free = this->arena->top_mem_block;
if (this->arena->curr_mem_block == block_to_free)
this->arena->curr_mem_block = block_to_free->prev;
this->arena->top_mem_block = block_to_free->prev;
Dqn_MemArena__FreeBlock(this->arena, block_to_free);
}
for (Dqn_MemBlock *mem_block = this->arena->top_mem_block; mem_block != this->curr_mem_block; mem_block = mem_block->prev)
mem_block->used = 0;
this->arena->curr_mem_block->used = this->curr_mem_block_used;
}
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
// @ // @
// @ NOTE: Dqn_Allocator // @ NOTE: Dqn_Allocator
@ -1649,6 +1444,163 @@ DQN_HEADER_COPY_PROTOTYPE(void, Dqn_Allocator_Free(Dqn_Allocator *allocator, voi
} }
} }
// @ -------------------------------------------------------------------------------------------------
// @
// @ NOTE: Dqn_MemArena
// @
// @ -------------------------------------------------------------------------------------------------
DQN_FILE_SCOPE Dqn_MemBlock *Dqn_MemArena__AllocateBlock(Dqn_MemArena *arena, Dqn_usize requested_size)
{
Dqn_usize mem_block_size = DQN_MAX(arena->min_block_size, requested_size);
Dqn_usize const allocate_size = sizeof(*arena->curr_mem_block) + mem_block_size;
Dqn_MemBlock *result = DQN_CAST(Dqn_MemBlock *) Dqn_Allocator_Allocate(&arena->allocator, allocate_size);
if (!result) return result;
*result = {};
result->size = mem_block_size;
result->memory = DQN_CAST(Dqn_u8 *)result + sizeof(*result);
arena->total_allocated_mem_blocks++;
return result;
}
DQN_FILE_SCOPE void Dqn_MemArena__FreeBlock(Dqn_MemArena *arena, Dqn_MemBlock *block)
{
if (!block)
return;
if (block->next)
block->next->prev = block->prev;
if (block->prev)
block->prev->next = block->next;
Dqn_Allocator_Free(&arena->allocator, block);
}
DQN_FILE_SCOPE void Dqn_MemArena__AttachBlock(Dqn_MemArena *arena, Dqn_MemBlock *new_block)
{
if (arena->top_mem_block)
{
DQN_ASSERT(arena->top_mem_block->next == nullptr);
arena->top_mem_block->next = new_block;
new_block->prev = arena->top_mem_block;
arena->top_mem_block = new_block;
}
else
{
arena->top_mem_block = new_block;
arena->curr_mem_block = new_block;
}
}
DQN_HEADER_COPY_PROTOTYPE(void *, Dqn_MemArena_Alloc(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
Dqn_b32 need_new_mem_block = true;
for (Dqn_MemBlock *mem_block = arena->curr_mem_block; mem_block; mem_block = mem_block->next)
{
Dqn_b32 can_fit_in_block = (mem_block->used + size) <= mem_block->size;
if (can_fit_in_block)
{
arena->curr_mem_block = mem_block;
need_new_mem_block = false;
break;
}
}
if (need_new_mem_block)
{
Dqn_MemBlock *new_block = Dqn_MemArena__AllocateBlock(arena, size);
if (!new_block) return nullptr;
Dqn_MemArena__AttachBlock(arena, new_block);
arena->curr_mem_block = arena->top_mem_block;
}
void *result = static_cast<Dqn_u8 *>(arena->curr_mem_block->memory) + arena->curr_mem_block->used;
arena->curr_mem_block->used += size;
DQN_ASSERT(arena->curr_mem_block->used <= arena->curr_mem_block->size);
return result;
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_Free(Dqn_MemArena *arena DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
for (Dqn_MemBlock *mem_block = arena->top_mem_block; mem_block;)
{
Dqn_MemBlock *block_to_free = mem_block;
mem_block = block_to_free->prev;
Dqn_MemArena__FreeBlock(arena, block_to_free);
}
auto allocator = arena->allocator;
auto highest_used_mark = arena->highest_used_mark;
*arena = {};
arena->highest_used_mark = highest_used_mark;
arena->allocator = allocator;
}
DQN_HEADER_COPY_PROTOTYPE(Dqn_b32, Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
Dqn_usize remaining_space = arena->top_mem_block->size - arena->top_mem_block->used;
if (remaining_space >= size) return true;
Dqn_MemBlock *new_block = Dqn_MemArena__AllocateBlock(arena, size);
if (!new_block) return false;
Dqn_MemArena__AttachBlock(arena, new_block);
return true;
}
DQN_HEADER_COPY_PROTOTYPE(void, Dqn_MemArena_InitMemory(Dqn_MemArena *arena, void *memory, Dqn_usize size DQN_DEBUG_ARGS))
{
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
(void)file; (void)file_len; (void)func; (void)func_len; (void)line;
#endif
DQN_ASSERT_MSG(size >= sizeof(*arena->curr_mem_block), "(%zu >= %zu) There needs to be enough space to encode the Dqn_MemBlock struct into the memory buffer", size, sizeof(*arena->curr_mem_block));
*arena = {};
arena->allocator = Dqn_Allocator_NullAllocator();
auto *mem_block = DQN_CAST(Dqn_MemBlock *)memory;
*mem_block = {};
mem_block->memory = DQN_CAST(Dqn_u8 *)memory + sizeof(*mem_block);
mem_block->size = size - sizeof(*mem_block);
Dqn_MemArena__AttachBlock(arena, mem_block);
}
DQN_HEADER_COPY_PROTOTYPE(Dqn_MemArenaScopedRegion, Dqn_MemArena_MakeScopedRegion(Dqn_MemArena *arena))
{
return Dqn_MemArenaScopedRegion(arena);
}
Dqn_MemArenaScopedRegion::Dqn_MemArenaScopedRegion(Dqn_MemArena *arena)
{
this->arena = arena;
this->curr_mem_block = arena->curr_mem_block;
this->curr_mem_block_used = (arena->curr_mem_block) ? arena->curr_mem_block->used : 0;
this->top_mem_block = arena->top_mem_block;
}
Dqn_MemArenaScopedRegion::~Dqn_MemArenaScopedRegion()
{
while (this->top_mem_block != this->arena->top_mem_block)
{
Dqn_MemBlock *block_to_free = this->arena->top_mem_block;
if (this->arena->curr_mem_block == block_to_free)
this->arena->curr_mem_block = block_to_free->prev;
this->arena->top_mem_block = block_to_free->prev;
Dqn_MemArena__FreeBlock(this->arena, block_to_free);
}
for (Dqn_MemBlock *mem_block = this->arena->top_mem_block; mem_block != this->curr_mem_block; mem_block = mem_block->prev)
mem_block->used = 0;
this->arena->curr_mem_block->used = this->curr_mem_block_used;
}
// @ ------------------------------------------------------------------------------------------------- // @ -------------------------------------------------------------------------------------------------
// @ // @

1
Code/DqnHeader.h
View File

@ -157,6 +157,7 @@ int main(int argc, char *argv[])
} }
Dqn_MemArena arena = {}; Dqn_MemArena arena = {};
DQN_MEM_ARENA_RESERVE(&arena, DQN_MEGABYTES(16));
for (isize arg_index = 1; arg_index < argc; ++arg_index) for (isize arg_index = 1; arg_index < argc; ++arg_index)
{ {
char const *file = argv[arg_index]; char const *file = argv[arg_index];

607
Code/DqnHeader_Generated.h
View File

@ -1,607 +0,0 @@
// -------------------------------------------------------------------------------------------------
//
// NOTE: Typedefs, Macros, Utils
//
// -------------------------------------------------------------------------------------------------
constexpr Dqn_usize Dqn_ArrayCount(T const (&)[N]);
constexpr Dqn_isize Dqn_ArrayCountI(T const (&)[N]);
constexpr Dqn_usize Dqn_CharCount(char const (&)[N]);
constexpr Dqn_isize Dqn_CharCountI(char const (&)[N]);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Logging
//
// -------------------------------------------------------------------------------------------------
constexpr inline char const * Dqn_LogTypeTag(Dqn_LogType type);
// NOTE: Set the callback to get called whenever a log message has been printed
#define DQN_LOG_CALLBACK(name) void name(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *log_str)
typedef DQN_LOG_CALLBACK(Dqn_LogCallback);
Dqn_LogCallback *Dqn_log_callback;
#define DQN_LOG_E(fmt, ...) Dqn_Log(Dqn_LogType::Error, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_D(fmt, ...) Dqn_Log(Dqn_LogType::Debug, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_W(fmt, ...) Dqn_Log(Dqn_LogType::Warning, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_I(fmt, ...) Dqn_Log(Dqn_LogType::Info, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG_M(fmt, ...) Dqn_Log(Dqn_LogType::Info, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
#define DQN_LOG(log_type, fmt, ...) Dqn_Log(log_type, DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__, fmt, ## __VA_ARGS__)
// -------------------------------------------------------------------------------------------------
//
// NOTE: Math
//
// -------------------------------------------------------------------------------------------------
union Dqn_V2I
{
struct { Dqn_i32 x, y; };
struct { Dqn_i32 w, h; };
struct { Dqn_i32 min, max; };
Dqn_i32 e[2];
constexpr Dqn_V2I() = default;
constexpr Dqn_V2I(Dqn_f32 x_, Dqn_f32 y_): x((Dqn_i32)x_), y((Dqn_i32)y_) {}
constexpr Dqn_V2I(Dqn_i32 x_, Dqn_i32 y_): x(x_), y(y_) {}
constexpr Dqn_V2I(Dqn_i32 xy): x(xy), y(xy) {}
constexpr bool operator!=(Dqn_V2I other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V2I other) const { return (x == other.x) && (y == other.y); }
constexpr bool operator>=(Dqn_V2I other) const { return (x >= other.x) && (y >= other.y); }
constexpr bool operator<=(Dqn_V2I other) const { return (x <= other.x) && (y <= other.y); }
constexpr bool operator< (Dqn_V2I other) const { return (x < other.x) && (y < other.y); }
constexpr bool operator> (Dqn_V2I other) const { return (x > other.x) && (y > other.y); }
constexpr Dqn_V2I operator- (Dqn_V2I other) const { Dqn_V2I result(x - other.x, y - other.y); return result; }
constexpr Dqn_V2I operator+ (Dqn_V2I other) const { Dqn_V2I result(x + other.x, y + other.y); return result; }
constexpr Dqn_V2I operator* (Dqn_V2I other) const { Dqn_V2I result(x * other.x, y * other.y); return result; }
constexpr Dqn_V2I operator* (Dqn_f32 other) const { Dqn_V2I result(x * other, y * other); return result; }
constexpr Dqn_V2I operator* (Dqn_i32 other) const { Dqn_V2I result(x * other, y * other); return result; }
constexpr Dqn_V2I operator/ (Dqn_V2I other) const { Dqn_V2I result(x / other.x, y / other.y); return result; }
constexpr Dqn_V2I operator/ (Dqn_f32 other) const { Dqn_V2I result(x / other, y / other); return result; }
constexpr Dqn_V2I operator/ (Dqn_i32 other) const { Dqn_V2I result(x / other, y / other); return result; }
constexpr Dqn_V2I &operator*=(Dqn_V2I other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2I &operator-=(Dqn_V2I other) { *this = *this - other; return *this; }
constexpr Dqn_V2I &operator+=(Dqn_V2I other) { *this = *this + other; return *this; }
};
union Dqn_V2
{
struct { Dqn_f32 x, y; };
struct { Dqn_f32 w, h; };
struct { Dqn_f32 min, max; };
Dqn_f32 e[2];
constexpr Dqn_V2() = default;
constexpr Dqn_V2(Dqn_f32 a) : x(a), y(a) {}
constexpr Dqn_V2(Dqn_i32 a) : x((Dqn_f32)a), y((Dqn_f32)a) {}
constexpr Dqn_V2(Dqn_f32 x_, Dqn_f32 y_): x(x_), y(y_) {}
constexpr Dqn_V2(Dqn_i32 x_, Dqn_i32 y_): x((Dqn_f32)x_), y((Dqn_f32)y_) {}
constexpr Dqn_V2(Dqn_V2I a) : x((Dqn_f32)a.x), y((Dqn_f32)a.y) {}
constexpr bool operator!=(Dqn_V2 other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V2 other) const { return (x == other.x) && (y == other.y); }
constexpr bool operator>=(Dqn_V2 other) const { return (x >= other.x) && (y >= other.y); }
constexpr bool operator<=(Dqn_V2 other) const { return (x <= other.x) && (y <= other.y); }
constexpr bool operator< (Dqn_V2 other) const { return (x < other.x) && (y < other.y); }
constexpr bool operator> (Dqn_V2 other) const { return (x > other.x) && (y > other.y); }
constexpr Dqn_V2 operator- (Dqn_V2 other) const { Dqn_V2 result(x - other.x, y - other.y); return result; }
constexpr Dqn_V2 operator+ (Dqn_V2 other) const { Dqn_V2 result(x + other.x, y + other.y); return result; }
constexpr Dqn_V2 operator* (Dqn_V2 other) const { Dqn_V2 result(x * other.x, y * other.y); return result; }
constexpr Dqn_V2 operator* (Dqn_f32 other) const { Dqn_V2 result(x * other, y * other); return result; }
constexpr Dqn_V2 operator* (Dqn_i32 other) const { Dqn_V2 result(x * other, y * other); return result; }
constexpr Dqn_V2 operator/ (Dqn_V2 other) const { Dqn_V2 result(x / other.x, y / other.y); return result; }
constexpr Dqn_V2 operator/ (Dqn_f32 other) const { Dqn_V2 result(x / other, y / other); return result; }
constexpr Dqn_V2 operator/ (Dqn_i32 other) const { Dqn_V2 result(x / other, y / other); return result; }
constexpr Dqn_V2 &operator*=(Dqn_V2 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_V2 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_f32 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator/=(Dqn_i32 other) { *this = *this / other; return *this; }
constexpr Dqn_V2 &operator-=(Dqn_V2 other) { *this = *this - other; return *this; }
constexpr Dqn_V2 &operator+=(Dqn_V2 other) { *this = *this + other; return *this; }
};
union Dqn_V3
{
struct { Dqn_f32 x, y, z; };
struct { Dqn_f32 r, g, b; };
Dqn_V2 xy;
Dqn_f32 e[3];
constexpr Dqn_V3() = default;
constexpr Dqn_V3(Dqn_f32 a) : x(a), y(a), z(a) {}
constexpr Dqn_V3(Dqn_i32 a) : x((Dqn_f32)a), y((Dqn_f32)a), z((Dqn_f32)a) {}
constexpr Dqn_V3(Dqn_f32 x_, Dqn_f32 y_, Dqn_f32 z_): x(x_), y(y_), z(z_) {}
constexpr Dqn_V3(Dqn_i32 x_, Dqn_i32 y_, Dqn_f32 z_): x((Dqn_f32)x_), y((Dqn_f32)y_), z((Dqn_f32)z_) {}
constexpr Dqn_V3(Dqn_V2 xy, Dqn_f32 z_) : x(xy.x), y(xy.y), z(z_) {}
constexpr bool operator!= (Dqn_V3 other) const { return !(*this == other); }
constexpr bool operator== (Dqn_V3 other) const { return (x == other.x) && (y == other.y) && (z == other.z); }
constexpr bool operator>= (Dqn_V3 other) const { return (x >= other.x) && (y >= other.y) && (z >= other.z); }
constexpr bool operator<= (Dqn_V3 other) const { return (x <= other.x) && (y <= other.y) && (z <= other.z); }
constexpr bool operator< (Dqn_V3 other) const { return (x < other.x) && (y < other.y) && (z < other.z); }
constexpr bool operator> (Dqn_V3 other) const { return (x > other.x) && (y > other.y) && (z > other.z); }
constexpr Dqn_V3 operator- (Dqn_V3 other) const { Dqn_V3 result(x - other.x, y - other.y, z - other.z); return result; }
constexpr Dqn_V3 operator+ (Dqn_V3 other) const { Dqn_V3 result(x + other.x, y + other.y, z + other.z); return result; }
constexpr Dqn_V3 operator* (Dqn_V3 other) const { Dqn_V3 result(x * other.x, y * other.y, z * other.z); return result; }
constexpr Dqn_V3 operator* (Dqn_f32 other) const { Dqn_V3 result(x * other, y * other, z * other); return result; }
constexpr Dqn_V3 operator* (Dqn_i32 other) const { Dqn_V3 result(x * other, y * other, z * other); return result; }
constexpr Dqn_V3 operator/ (Dqn_V3 other) const { Dqn_V3 result(x / other.x, y / other.y, z / other.z); return result; }
constexpr Dqn_V3 operator/ (Dqn_f32 other) const { Dqn_V3 result(x / other, y / other, z / other); return result; }
constexpr Dqn_V3 operator/ (Dqn_i32 other) const { Dqn_V3 result(x / other, y / other, z / other); return result; }
constexpr Dqn_V3 &operator*=(Dqn_V3 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_V3 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_f32 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator/=(Dqn_i32 other) { *this = *this / other; return *this; }
constexpr Dqn_V3 &operator-=(Dqn_V3 other) { *this = *this - other; return *this; }
constexpr Dqn_V3 &operator+=(Dqn_V3 other) { *this = *this + other; return *this; }
};
union Dqn_V4
{
struct { Dqn_f32 x, y, z, w; };
struct { Dqn_f32 r, g, b, a; };
Dqn_V3 rgb;
Dqn_f32 e[4];
constexpr Dqn_V4() = default;
constexpr Dqn_V4(Dqn_f32 xyzw) : x(xyzw), y(xyzw), z(xyzw), w(xyzw) {}
constexpr Dqn_V4(Dqn_f32 x_, Dqn_f32 y_, Dqn_f32 z_, Dqn_f32 w_): x(x_), y(y_), z(z_), w(w_) {}
constexpr Dqn_V4(Dqn_i32 x_, Dqn_i32 y_, Dqn_i32 z_, Dqn_i32 w_): x((Dqn_f32)x_), y((Dqn_f32)y_), z((Dqn_f32)z_), w((Dqn_f32)w_) {}
constexpr Dqn_V4(Dqn_V3 xyz, Dqn_f32 w_) : x(xyz.x), y(xyz.y), z(xyz.z), w(w_) {}
constexpr bool operator!=(Dqn_V4 other) const { return !(*this == other); }
constexpr bool operator==(Dqn_V4 other) const { return (x == other.x) && (y == other.y) && (z == other.z) && (w == other.w); }
constexpr bool operator>=(Dqn_V4 other) const { return (x >= other.x) && (y >= other.y) && (z >= other.z) && (w >= other.w); }
constexpr bool operator<=(Dqn_V4 other) const { return (x <= other.x) && (y <= other.y) && (z <= other.z) && (w <= other.w); }
constexpr bool operator< (Dqn_V4 other) const { return (x < other.x) && (y < other.y) && (z < other.z) && (w < other.w); }
constexpr bool operator> (Dqn_V4 other) const { return (x > other.x) && (y > other.y) && (z > other.z) && (w > other.w); }
constexpr Dqn_V4 operator- (Dqn_V4 other) const { Dqn_V4 result(x - other.x, y - other.y, z - other.z, w - other.w); return result; }
constexpr Dqn_V4 operator+ (Dqn_V4 other) const { Dqn_V4 result(x + other.x, y + other.y, z + other.z, w + other.w); return result; }
constexpr Dqn_V4 operator* (Dqn_V4 other) const { Dqn_V4 result(x * other.x, y * other.y, z * other.z, w * other.w); return result; }
constexpr Dqn_V4 operator* (Dqn_f32 other) const { Dqn_V4 result(x * other, y * other, z * other, w * other); return result; }
constexpr Dqn_V4 operator* (Dqn_i32 other) const { Dqn_V4 result(x * other, y * other, z * other, w * other); return result; }
constexpr Dqn_V4 operator/ (Dqn_f32 other) const { Dqn_V4 result(x / other, y / other, z / other, w / other); return result; }
constexpr Dqn_V4 &operator*=(Dqn_V4 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator*=(Dqn_f32 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator*=(Dqn_i32 other) { *this = *this * other; return *this; }
constexpr Dqn_V4 &operator-=(Dqn_V4 other) { *this = *this - other; return *this; }
constexpr Dqn_V4 &operator+=(Dqn_V4 other) { *this = *this + other; return *this; }
};
struct Dqn_Rect
{
Dqn_V2 min, max;
Dqn_Rect() = default;
Dqn_Rect(Dqn_V2 min, Dqn_V2 max) : min(min), max(max) {}
Dqn_Rect(Dqn_V2I min, Dqn_V2I max) : min(min), max(max) {}
};
struct Dqn_RectI32
{
Dqn_V2I min, max;
Dqn_RectI32() = default;
Dqn_RectI32(Dqn_V2I min, Dqn_V2I max) : min(min), max(max) {}
};
union Dqn_Mat4
{
Dqn_f32 e[16];
Dqn_V4 row[4];
Dqn_f32 row_major[4][4];
Dqn_f32 operator[](Dqn_usize i) const { return e[i]; }
};
template <typename T> int Dqn_MemCmpType(T const *ptr1, T const *ptr2);
template <typename T> T * Dqn_MemZero(T *src);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_MemArena
//
// -------------------------------------------------------------------------------------------------
using Dqn_MemSize = Dqn_usize;
struct Dqn_MemBlock
{
// NOTE: Read only state
Dqn_b32 allocated_by_user_or_fixed_mem;
void *memory;
Dqn_MemSize size;
Dqn_MemSize used;
Dqn_MemBlock *prev;
Dqn_MemBlock *next;
};
enum Dqn_MemArenaFlag
{
Dqn_MemArenaFlag_NoCRTAllocation = (1 << 0), // If my_calloc/my_free aren't null, it defaults to calloc and free, setting this flag disables that
};
struct Dqn_MemArena
{
// NOTE: Configuration (fill once)
void *(*my_calloc)(Dqn_usize bytes); // If nullptr, use CRT calloc unless disabled in flags
void (*my_free) (void *ptr, Dqn_usize bytes_to_free); // If nullptr, use CRT free unless disabled in flags
Dqn_u32 flags;
// NOTE: Read Only
Dqn_u8 fixed_mem[DQN_KILOBYTES(16)];
Dqn_MemBlock fixed_mem_block;
Dqn_MemBlock *curr_mem_block;
Dqn_MemBlock *top_mem_block;
Dqn_MemSize highest_used_mark;
int total_allocated_mem_blocks;
};
struct Dqn_MemArenaScopedRegion
{
Dqn_MemArenaScopedRegion(Dqn_MemArena *arena);
~Dqn_MemArenaScopedRegion();
Dqn_MemArena *arena;
Dqn_MemBlock *curr_mem_block;
Dqn_usize curr_mem_block_used;
Dqn_MemBlock *top_mem_block;
};
#if defined(DQN_DEBUG_DQN_MEM_ARENA_LOGGING)
#define DQN_DEBUG_ARGS , char const *file, Dqn_isize file_len, char const *func, Dqn_isize func_len, Dqn_isize line
#define DQN_DEBUG_PARAMS , DQN_STR_AND_LEN(__FILE__), DQN_STR_AND_LEN(__func__), __LINE__
#else
#define DQN_DEBUG_ARGS
#define DQN_DEBUG_PARAMS
#endif
#define DQN_MEM_ARENA_ALLOC(arena, size) Dqn_MemArena_Alloc(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_ARRAY(arena, T, num) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) * num DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_ALLOC_STRUCT(arena, T) (T *)Dqn_MemArena_Alloc(arena, sizeof(T) DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_RESERVE(arena, size) Dqn_MemArena_Reserve(arena, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_RESERVE_FROM(arena, src, size) Dqn_MemArena_ReserveFrom(arena, src, size DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_CLEAR_USED(arena) Dqn_MemArena_ClearUsed(arena DQN_DEBUG_PARAMS)
#define DQN_MEM_ARENA_FREE(arena) Dqn_MemArena_Free
// -------------------------------------------------------------------------------------------------
//
// NOTE: String Builder
//
// -------------------------------------------------------------------------------------------------
struct Dqn_StringBuilderBuffer
{
char *mem;
Dqn_MemSize size;
Dqn_MemSize used;
Dqn_StringBuilderBuffer *next;
};
Dqn_usize constexpr DQN_STRING_BUILDER_MIN_MEM_BUF_ALLOC_SIZE = DQN_KILOBYTES(4);
template <Dqn_usize N = DQN_KILOBYTES(16)>
struct Dqn_StringBuilder
{
void *(*my_malloc)(size_t bytes) = malloc; // Set to nullptr to disable heap allocation
void (*my_free) (void *ptr) = free; // Set to nullptr to disable heap allocation
char fixed_mem[N];
Dqn_MemSize fixed_mem_used;
Dqn_StringBuilderBuffer *next_mem_buf;
Dqn_StringBuilderBuffer *last_mem_buf;
Dqn_isize string_len;
};
// The necessary length to build the string, it returns the length including the null-terminator
template <Dqn_usize N> Dqn_isize Dqn_StringBuilder_BuildLen(Dqn_StringBuilder<N> const *builder);
template <Dqn_usize N> void Dqn_StringBuilder_BuildInBuffer(Dqn_StringBuilder<N> const *builder, char *dest, Dqn_usize dest_size);
template <Dqn_usize N> char * Dqn_StringBuilder_BuildFromMalloc(Dqn_StringBuilder<N> *builder, Dqn_isize *len = nullptr);
template <Dqn_usize N> char * Dqn_StringBuilder_BuildFromArena(Dqn_StringBuilder<N> *builder, Dqn_MemArena *arena, Dqn_isize *len = nullptr);
template <Dqn_usize N> void Dqn_StringBuilder_VFmtAppend(Dqn_StringBuilder<N> *builder, char const *fmt, va_list va);
template <Dqn_usize N> void Dqn_StringBuilder_FmtAppend(Dqn_StringBuilder<N> *builder, char const *fmt, ...);
template <Dqn_usize N> void Dqn_StringBuilder_Append(Dqn_StringBuilder<N> *builder, char const *str, Dqn_isize len = -1);
template <Dqn_usize N> void Dqn_StringBuilder_AppendChar(Dqn_StringBuilder<N> *builder, char ch);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Slices
//
// -------------------------------------------------------------------------------------------------
template <typename T> inline Dqn_Slice<T> Dqn_Slice_CopyNullTerminated(Dqn_MemArena *arena, T const *src, Dqn_isize len);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_CopyNullTerminated(Dqn_MemArena *arena, Dqn_Slice<T> const src);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_Copy(Dqn_MemArena *arena, T const *src, Dqn_isize len);
template <typename T> inline Dqn_Slice<T> Dqn_Slice_Copy(Dqn_MemArena *arena, Dqn_Slice<T> const src);
template <typename T> inline bool Dqn_Slice_Equals(Dqn_Slice<T> const a, Dqn_Slice<T> const b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Asprintf (Allocate Sprintf)
//
// -------------------------------------------------------------------------------------------------
template <typename T> Dqn_Slice<char> Dqn_AsprintfSlice(T *arena, char const *fmt, va_list va);
template <typename T> Dqn_Slice<char> Dqn_AsprintfSlice(T *arena, char const *fmt, ...);
template <typename T> char * Dqn_Asprintf(T *arena, int *len, char const *fmt, ...);
template <typename T> char * Dqn_Asprintf(T *arena, char const *fmt, ...);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedArray
//
// -------------------------------------------------------------------------------------------------
#define DQN_FIXED_ARRAY_TEMPLATE template <typename T, int MAX_>
#define DQN_FIXED_ARRAY_TEMPLATE_DECL Dqn_FixedArray<T, MAX_>
DQN_FIXED_ARRAY_TEMPLATE struct Dqn_FixedArray
{
T data[MAX_];
Dqn_isize len;
Dqn_isize Max() const { return MAX_; }
T &operator[] (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T *begin () { return data; }
T *end () { return data + len; }
T *operator+ (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
T const &operator[] (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T const *begin () const { return data; }
T const *end () const { return data + len; }
T const *operator+ (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
};
DQN_FIXED_ARRAY_TEMPLATE_DECL Dqn_FixedArray_Init(T const *item, int num);
T * Dqn_FixedArray_Add(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const *items, Dqn_isize num);
T * Dqn_FixedArray_Add(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const item);
T * Dqn_FixedArray_Make(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize num);
void Dqn_FixedArray_Clear(DQN_FIXED_ARRAY_TEMPLATE_DECL *a);
void Dqn_FixedArray_EraseStable(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize index);
void Dqn_FixedArray_EraseUnstable(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize index);
void Dqn_FixedArray_Pop(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, Dqn_isize num);
T * Dqn_FixedArray_Peek(DQN_FIXED_ARRAY_TEMPLATE_DECL *a);
Dqn_isize Dqn_FixedArray_GetIndex(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T const *entry);
T * Dqn_FixedArray_Find(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, EqualityProc IsEqual);
T * Dqn_FixedArray_Find(DQN_FIXED_ARRAY_TEMPLATE_DECL *a, T *entry);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedStack
//
// -------------------------------------------------------------------------------------------------
template <typename T, int MAX_> using Dqn_FixedStack = DQN_FIXED_ARRAY_TEMPLATE_DECL;
template <typename T, int MAX_> T Dqn_FixedStack_Pop (Dqn_FixedStack<T, MAX_> *array) { T result = *Dqn_FixedArray_Peek(array); Dqn_FixedArray_Pop(array, 1); return result; }
template <typename T, int MAX_> T *Dqn_FixedStack_Peek (Dqn_FixedStack<T, MAX_> *array) { return Dqn_FixedArray_Peek(array); }
template <typename T, int MAX_> T *Dqn_FixedStack_Push (Dqn_FixedStack<T, MAX_> *array, T item) { return Dqn_FixedArray_Add(array, item); }
template <typename T, int MAX_> void Dqn_FixedStack_Clear(Dqn_FixedStack<T, MAX_> *array) { Dqn_FixedArray_Clear(array); }
enum struct Dqn_Allocator_Type
{
Heap, // Malloc, realloc, free
XHeap, // Malloc realloc, free, crash on failure
Arena,
NullAllocator,
};
struct Dqn_Allocator
{
Dqn_Allocator_Type type;
void *data;
};
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Array
//
// -------------------------------------------------------------------------------------------------
// TODO(doyle): Make this either initialised from memory or dynamically allocating
template <typename T> struct Dqn_Array
{
Dqn_Allocator allocator;
T *data;
Dqn_isize len;
Dqn_isize max;
T const operator[](Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T operator[](Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
T const *begin () const { return data; }
T const *end () const { return data + len; }
T *begin () { return data; }
T *end () { return data + len; }
T const *operator+(Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
T *operator+(Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data + i; }
};
template <typename T> Dqn_Array<T> Dqn_Array_InitMemory(T *memory, Dqn_isize max, Dqn_isize len = 0);
template <typename T> bool Dqn_Array_Reserve(Dqn_Array<T> *a, Dqn_isize size);
template <typename T> void Dqn_Array_Free(Dqn_Array<T> *a);
template <typename T> T * Dqn_Array_Add(Dqn_Array<T> *a, T const *items, Dqn_isize num);
template <typename T> T * Dqn_Array_Add(Dqn_Array<T> *a, T const item);
template <typename T> T * Dqn_Array_Make(Dqn_Array<T> *a, Dqn_isize num);
template <typename T> void Dqn_Array_Clear(Dqn_Array<T> *a, bool zero_mem = false);
template <typename T> void Dqn_Array_EraseStable(Dqn_Array<T> *a, Dqn_isize index);
template <typename T> void Dqn_Array_EraseUnstable(Dqn_Array<T> *a, Dqn_isize index);
template <typename T> void Dqn_Array_Pop(Dqn_Array<T> *a, Dqn_isize num);
template <typename T> T * Dqn_Array_Peek(Dqn_Array<T> *a);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_FixedString
//
// -------------------------------------------------------------------------------------------------
template <Dqn_isize MAX_>
struct Dqn_FixedString
{
union { char data[MAX_]; char str[MAX_]; char buf[MAX_]; };
Dqn_isize len;
Dqn_isize Max() const { return MAX_; }
Dqn_FixedString() { data[0] = 0; len = 0; }
Dqn_FixedString(char const *fmt, ...)
{
*this = {};
va_list va;
va_start(va, fmt);
Dqn_FixedString_AppendVFmt(this, fmt, va);
va_end(va);
}
char const &operator[] (Dqn_isize i) const { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
char &operator[] (Dqn_isize i) { DQN_ASSERT_MSG(i >= 0 && i < len, "%d >= 0 && %d < %d", i, len); return data[i]; }
char const *begin () const { return data; }
char const *end () const { return data + len; }
char *begin () { return data; }
char *end () { return data + len; }
};
template <Dqn_isize MAX_> void Dqn_FixedString_Clear(Dqn_FixedString<MAX_> *str);
template <Dqn_isize MAX_> void Dqn_FixedString_AppendVFmt(Dqn_FixedString<MAX_> *str, char const *fmt, va_list va);
template <Dqn_isize MAX_> void Dqn_FixedString_AppendFmt(Dqn_FixedString<MAX_> *str, char const *fmt, ...);
template <Dqn_isize MAX_> void Dqn_FixedString_Append(Dqn_FixedString<MAX_> *str, char const *src, Dqn_isize len = -1);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Dqn_U64Str
//
// -------------------------------------------------------------------------------------------------
struct Dqn_U64Str
{
// Points to the start of the str in the buffer, not necessarily buf since
// we write into the buffer in reverse
char *start;
char buf[27]; // NOTE(doyle): 27 is the maximum size of Dqn_u64 including commas
int len;
};
// -------------------------------------------------------------------------------------------------
//
// NOTE: Helpers
//
// -------------------------------------------------------------------------------------------------
int Dqn_MemCmp(void const *ptr1, void const *ptr2, size_t num_bytes);
void * Dqn_MemCopy(void *dest, void const *src, size_t num_bytes);
void * Dqn_MemMove(void *dest, void const *src, size_t num_bytes);
void * Dqn_MemSet(void *src, char ch, Dqn_usize num_bytes);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Logging
//
// -------------------------------------------------------------------------------------------------
void Dqn_LogV(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *fmt, va_list va);
void Dqn_Log(Dqn_LogType type, char const *file, Dqn_usize file_len, char const *func, Dqn_usize func_len, Dqn_usize line, char const *fmt, ...);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_MemArena
//
// -------------------------------------------------------------------------------------------------
void * Dqn_MemArena_Alloc(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_Free(Dqn_MemArena *arena DQN_DEBUG_ARGS);
Dqn_b32 Dqn_MemArena_Reserve(Dqn_MemArena *arena, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_ReserveFrom(Dqn_MemArena *arena, void *memory, Dqn_usize size DQN_DEBUG_ARGS);
void Dqn_MemArena_ClearUsed(Dqn_MemArena *arena DQN_DEBUG_ARGS);
Dqn_MemArenaScopedRegion Dqn_MemArena_MakeScopedRegion(Dqn_MemArena *arena);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Allocator
//
// -------------------------------------------------------------------------------------------------
Dqn_Allocator Dqn_Allocator_NullAllocator();
Dqn_Allocator Dqn_Allocator_HeapAllocator();
Dqn_Allocator Dqn_Allocator_XHeapAllocator();
Dqn_Allocator Dqn_Allocator_ArenaAllocator(Dqn_MemArena *arena);
void * Dqn_Allocator_Allocate(Dqn_Allocator *allocator, Dqn_usize size);
void * Dqn_Allocator_Realloc(Dqn_Allocator *allocator, void *old_ptr, Dqn_isize old_size, Dqn_isize new_size);
void Dqn_Allocator_Free(Dqn_Allocator *allocator, void *ptr);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Vectors
//
// -------------------------------------------------------------------------------------------------
Dqn_V2I Dqn_V2_ToV2I(Dqn_V2 a);
Dqn_V2 Dqn_V2_Max(Dqn_V2 a, Dqn_V2 b);
Dqn_V2 Dqn_V2_Abs(Dqn_V2 a);
Dqn_f32 Dqn_V2_Dot(Dqn_V2 a, Dqn_V2 b);
Dqn_f32 Dqn_V2_LengthSq(Dqn_V2 a, Dqn_V2 b);
Dqn_V2 Dqn_V2_Normalise(Dqn_V2 a);
Dqn_V2 Dqn_V2_Perpendicular(Dqn_V2 a);
Dqn_f32 Dqn_V4_Dot(Dqn_V4 const *a, Dqn_V4 const *b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Rect
//
// -------------------------------------------------------------------------------------------------
Dqn_Rect Dqn_Rect_InitFromPosAndSize(Dqn_V2 pos, Dqn_V2 size);
Dqn_V2 Dqn_Rect_Center(Dqn_Rect rect);
Dqn_b32 Dqn_Rect_ContainsPoint(Dqn_Rect rect, Dqn_V2 p);
Dqn_b32 Dqn_Rect_ContainsRect(Dqn_Rect a, Dqn_Rect b);
Dqn_V2 Dqn_Rect_Size(Dqn_Rect rect);
Dqn_Rect Dqn_Rect_Move(Dqn_Rect src, Dqn_V2 move_amount);
Dqn_Rect Dqn_Rect_Union(Dqn_Rect a, Dqn_Rect b);
Dqn_Rect Dqn_Rect_FromRectI32(Dqn_RectI32 a);
Dqn_V2I Dqn_RectI32_Size(Dqn_RectI32 rect);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Math Utils
//
// -------------------------------------------------------------------------------------------------
Dqn_V2 Dqn_LerpV2(Dqn_V2 a, Dqn_f32 t, Dqn_V2 b);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Dqn_Mat4
//
// -------------------------------------------------------------------------------------------------
Dqn_Mat4 Dqn_Mat4_Identity();
Dqn_Mat4 Dqn_Mat4_Scale3f(Dqn_f32 x, Dqn_f32 y, Dqn_f32 z);
Dqn_Mat4 Dqn_Mat4_ScaleV3(Dqn_V3 vec);
Dqn_Mat4 Dqn_Mat4_Translate3f(Dqn_f32 x, Dqn_f32 y, Dqn_f32 z);
Dqn_Mat4 Dqn_Mat4_TranslateV3(Dqn_V3 vec);
Dqn_Mat4 operator*(Dqn_Mat4 const &a, Dqn_Mat4 const &b);
Dqn_V4 operator*(Dqn_Mat4 const &mat, Dqn_V4 const &vec);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Helper Functions
//
// -------------------------------------------------------------------------------------------------
void Dqn_Bit_UnsetInplace(Dqn_u32 *flags, Dqn_u32 bitfield);
void Dqn_Bit_SetInplace(Dqn_u32 *flags, Dqn_u32 bitfield);
Dqn_b32 Dqn_Bit_IsSet(Dqn_u32 flags, Dqn_u32 bitfield);
Dqn_b32 Dqn_Bit_IsNotSet(Dqn_u32 flags, Dqn_u32 bitfield);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Safe Arithmetic
//
// -------------------------------------------------------------------------------------------------
Dqn_i64 Dqn_Safe_AddI64(Dqn_i64 a, Dqn_i64 b);
Dqn_i64 Dqn_Safe_MulI64(Dqn_i64 a, Dqn_i64 b);
Dqn_u64 Dqn_Safe_AddU64(Dqn_u64 a, Dqn_u64 b);
Dqn_u64 Dqn_Safe_MulU64(Dqn_u64 a, Dqn_u64 b);
int Dqn_Safe_TruncateISizeToInt(Dqn_isize val);
Dqn_i32 Dqn_Safe_TruncateISizeToI32(Dqn_isize val);
Dqn_i8 Dqn_Safe_TruncateISizeToI8(Dqn_isize val);
Dqn_u32 Dqn_Safe_TruncateUSizeToU32(Dqn_u64 val);
int Dqn_Safe_TruncateUSizeToI32(Dqn_usize val);
int Dqn_Safe_TruncateUSizeToInt(Dqn_usize val);
// -------------------------------------------------------------------------------------------------
//
// NOTE: Char Helpers
//
// -------------------------------------------------------------------------------------------------
Dqn_b32 Dqn_Char_IsAlpha(char ch);
Dqn_b32 Dqn_Char_IsDigit(char ch);
Dqn_b32 Dqn_Char_IsAlphaNum(char ch);
Dqn_b32 Dqn_Char_IsWhitespace(char ch);
// -------------------------------------------------------------------------------------------------
//
// NOTE: String Helpers
//
// -------------------------------------------------------------------------------------------------
Dqn_b32 Dqn_Str_Equals(char const *a, char const *b, Dqn_isize a_len = -1, Dqn_isize b_len = -1);
char const * Dqn_Str_FindMulti(char const *buf, char const *find_list[], Dqn_isize const *find_string_lens, Dqn_isize find_len, Dqn_isize *match_index, Dqn_isize buf_len = -1);
char const * Dqn_Str_Find(char const *buf, char const *find, Dqn_isize buf_len = -1, Dqn_isize find_len = -1);
Dqn_b32 Dqn_Str_Match(char const *src, char const *find, int find_len);
char const * Dqn_Str_SkipToChar(char const *src, char ch);
char const * Dqn_Str_SkipToNextAlphaNum(char const *src);
char const * Dqn_Str_SkipToNextDigit(char const *src);
char const * Dqn_Str_SkipToNextChar(char const *src);
char const * Dqn_Str_SkipToNextWord(char const *src);
char const * Dqn_Str_SkipToNextWhitespace(char const *src);
char const * Dqn_Str_SkipWhitespace(char const *src);
char const * Dqn_Str_SkipToCharInPlace(char const **src, char ch);
char const * Dqn_Str_SkipToNextAlphaNumInPlace(char const **src);
char const * Dqn_Str_SkipToNextCharInPlace(char const **src);
char const * Dqn_Str_SkipToNextWhitespaceInPlace(char const **src);
char const * Dqn_Str_SkipToNextWordInPlace(char const **src);
char const * Dqn_Str_SkipWhitespaceInPlace(char const **src);
Dqn_u64 Dqn_Str_ToU64(char const *buf, int len = -1);
Dqn_i64 Dqn_Str_ToI64(char const *buf, int len = -1);
// -------------------------------------------------------------------------------------------------
//
// NOTE: File
//
// -------------------------------------------------------------------------------------------------
char * Dqn_File_ReadWithArena(Dqn_MemArena *arena, char const *file, Dqn_isize *file_size);

33
Project/Msvc/DqnHeader.sln Normal file
View File

@ -0,0 +1,33 @@

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.28307.168
MinimumVisualStudioVersion = 10.0.40219.1
Project("{911E67C6-3D85-4FCE-B560-20A9C3E3FF48}") = "DqnHeader", "..\..\Bin\DqnHeader.exe", "{6F5D8503-3434-4DD0-8253-1570BD19A135}"
ProjectSection(DebuggerProjectSystem) = preProject
PortSupplier = 00000000-0000-0000-0000-000000000000
Executable = F:\Home\Code\dqn\Bin\DqnHeader.exe
RemoteMachine = THAI-XPS13
StartingDirectory = F:\Home\Code\dqn\Bin
Arguments = ..\Code\Dqn.h
Environment = Default
LaunchingEngine = 00000000-0000-0000-0000-000000000000
UseLegacyDebugEngines = No
LaunchSQLEngine = No
AttachLaunchAction = No
EndProjectSection
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Release|x64 = Release|x64
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{6F5D8503-3434-4DD0-8253-1570BD19A135}.Release|x64.ActiveCfg = Release|x64
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {4C7A3762-6B3C-4C64-8C7A-DBF5A8956391}
EndGlobalSection
EndGlobal