Add custom memory allocator support for DArray
This commit is contained in:
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116861d888
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842
dqn.h
842
dqn.h
@ -19,16 +19,6 @@
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#define DQN_FILE_SCOPE
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#endif
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#ifdef _WIN32
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#ifdef DQN_WIN32_IMPLEMENTATION
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// TODO(doyle): Make my own windows.h?
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#define WIN32_LEAN_AND_MEAN
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#include <Windows.h>
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#define DQN_WIN32_ERROR_BOX(text, title) MessageBoxA(NULL, text, title, MB_OK);
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#endif
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#endif
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#include <stdint.h> // For standard types
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#define LOCAL_PERSIST static
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#define FILE_SCOPE static
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@ -66,6 +56,122 @@ typedef float f32;
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#define DQN_MIN(a, b) ((a) < (b) ? (a) : (b))
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#define DQN_SQUARED(x) ((x) * (x))
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////////////////////////////////////////////////////////////////////////////////
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// DqnMem - Memory
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////////////////////////////////////////////////////////////////////////////////
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// TODO(doyle): Use platform allocation, fallback to malloc if platform not defined
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DQN_FILE_SCOPE void *DqnMem_Alloc (size_t size);
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DQN_FILE_SCOPE void *DqnMem_Calloc (size_t size);
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DQN_FILE_SCOPE void DqnMem_Clear (void *memory, u8 clearValue, size_t size);
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DQN_FILE_SCOPE void *DqnMem_Realloc(void *memory, size_t newSize);
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DQN_FILE_SCOPE void DqnMem_Free (void *memory);
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////////////////////////////////////////////////////////////////////////////////
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// DqnMemBuffer - Memory Buffer, For push buffer/ptr memory style management
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////////////////////////////////////////////////////////////////////////////////
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typedef struct DqnMemBufferBlock
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{
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u8 *memory;
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size_t used;
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size_t size;
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DqnMemBufferBlock *prevBlock;
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} DqnMemBufferBlock;
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enum DqnMemBufferFlag
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{
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DqnMemBufferFlag_IsExpandable = (1 << 0),
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DqnMemBufferFlag_IsFixedMemoryFromUser = (1 << 1),
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};
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typedef struct DqnMemBuffer
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{
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DqnMemBufferBlock *block;
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u32 flags;
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i32 tempBufferCount;
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u32 byteAlign;
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} DqnMemBuffer;
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typedef struct DqnTempBuffer
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{
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DqnMemBuffer *buffer;
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DqnMemBufferBlock *startingBlock;
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size_t used;
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} DqnTempBuffer;
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DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedMem (DqnMemBuffer *const buffer, u8 *const mem, const size_t memSize, const u32 byteAlign = 4); // Use preallocated memory, no further allocations, returns NULL on allocate if out of space
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DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedSize(DqnMemBuffer *const buffer, size_t size, const bool clearToZero, const u32 byteAlign = 4); // Single allocation from platform, no further allocations, returns NULL of allocate if out of space
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DQN_FILE_SCOPE bool DqnMemBuffer_Init (DqnMemBuffer *const buffer, size_t size, const bool clearToZero, const u32 byteAlign = 4); // Allocates from platform dynamically as space runs out
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DQN_FILE_SCOPE void *DqnMemBuffer_Allocate (DqnMemBuffer *const buffer, size_t size); // Returns NULL if out of space, or platform allocation fails, or buffer is using fixed memory/size
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DQN_FILE_SCOPE void DqnMemBuffer_FreeLastBuffer(DqnMemBuffer *const buffer); // Frees the last-most block to the buffer, if it's the only block, the buffer will free that block then, next allocate with attach a block.
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DQN_FILE_SCOPE void DqnMemBuffer_Free (DqnMemBuffer *const buffer); // Frees all blocks belonging to this buffer
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DQN_FILE_SCOPE void DqnMemBuffer_ClearCurrBlock(DqnMemBuffer *const buffer, const bool clearToZero); // Reset the current blocks usage ptr to 0
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// TempBuffer is only required for the function. Once BeginTempRegion() is called, subsequent allocation calls can be made using the original buffer.
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// Upon EndTempRegion() the original buffer will free any additional blocks it allocated during the temp region and revert to the original
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// state before BeginTempRegion() was called.
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// WARNING: Any calls to Free/Clear functions in a TempRegion will invalidate and trash the buffer structure.
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// TODO(doyle): Look into a way of disallowing calls to free/clear in temp regions
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DQN_FILE_SCOPE DqnTempBuffer DqnMemBuffer_BeginTempRegion(DqnMemBuffer *const buffer);
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DQN_FILE_SCOPE void DqnMemBuffer_EndTempRegion (DqnTempBuffer tempBuffer);
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////////////////////////////////////////////////////////////////////////////////
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// DqnMemAPI - Memory API, For using custom allocators
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////////////////////////////////////////////////////////////////////////////////
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// You only need to care about this API if you want to use custom mem-alloc
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// routines in the data structures! Otherwise it reverts to the default one.
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// How To Use:
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// 1. Implement the callback function, where DqnMemApiCallbackInfo will tell you the request.
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// - (NOTE) The callback should return the resulting data into DqnMemAPICallbackResult
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// 2. Create a DqnMemAPI struct with a function ptr to your callback
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// - (OPTIONAL) Set the user context to your book-keeping/mem allocating service
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// 3. Initialise any data structure that supports a DqnMemAPI with your struct.
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// That's it! Done :) Of course, changing memAPI's after initialisation is
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// invalid since the pointers belonging to your old routine may not be tracked
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// in your new memAPI. So you're at your own discretion there.
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enum DqnMemAPICallbackType
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{
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DqnMemAPICallbackType_Invalid,
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DqnMemAPICallbackType_Alloc,
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DqnMemAPICallbackType_Realloc,
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DqnMemAPICallbackType_Free,
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};
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typedef struct DqnMemAPICallbackInfo
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{
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enum DqnMemAPICallbackType type;
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void *userContext;
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union {
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struct { size_t requestSize; }; // DqnMemAPICallbackType_Alloc
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struct { void *ptrToFree; }; // DqnMemAPICallbackType_Free
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struct { size_t newRequestSize; void *oldMemPtr; }; // DqnMemAPICallbackType_Realloc
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};
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} DqnMemAPICallbackInfo;
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typedef struct DqnMemAPICallbackResult
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{
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// NOTE: CallbackResult on free has nothing to fill out for result.
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enum DqnMemAPICallbackType type;
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void *newMemPtr;
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} DqnMemAPICallbackResult;
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typedef void DqnMemAPI_Callback(DqnMemAPICallbackInfo info, DqnMemAPICallbackResult *result);
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typedef struct DqnMemAPI
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{
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DqnMemAPI_Callback *callback;
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void *userContext;
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} DqnMemAPI;
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// TODO(doyle): DefaultUseMemBuffer is experimental!!!!
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DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_DefaultUseMemBuffer(DqnMemBuffer *const buffer);
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DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_DefaultUseCalloc();
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////////////////////////////////////////////////////////////////////////////////
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// DArray - Dynamic Array
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////////////////////////////////////////////////////////////////////////////////
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@ -75,6 +181,8 @@ typedef float f32;
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template <typename T>
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struct DqnArray
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{
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DqnMemAPI memAPI;
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u64 count;
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u64 capacity;
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T *data;
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@ -96,17 +204,30 @@ bool DqnArray_remove_stable(DqnArray<T> *array, u64 index);
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// Implementation taken from Milton, developed by Serge at
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// https://github.com/serge-rgb/milton#license
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template <typename T>
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bool DqnArray_Init(DqnArray<T> *array, size_t capacity)
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bool DqnArray_Init(DqnArray<T> *array, size_t capacity,
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DqnMemAPI memAPI = DqnMemAPI_DefaultUseCalloc())
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{
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if (!array) return false;
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if (array->data)
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{
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// TODO(doyle): Logging? The array already exists
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if (!DqnArray_Free(array)) return false;
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DqnMemAPICallbackInfo info =
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DqnMemAPICallback_InfoAskFreeInternal(array->memAPI, array->data);
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array->memAPI.callback(info, NULL);
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array->data = NULL;
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}
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array->memAPI = memAPI;
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array->data = (T *)Dqn_MemAllocInternal((size_t)capacity * sizeof(T), true);
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size_t allocateSize = (size_t)capacity * sizeof(T);
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DqnMemAPICallbackResult memResult = {};
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DqnMemAPICallbackInfo info =
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DqnMemAPICallback_InfoAskAllocInternal(array->memAPI, allocateSize);
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array->memAPI.callback(info, &memResult);
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DQN_ASSERT(memResult.type == DqnMemAPICallbackType_Alloc);
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array->data = (T *)memResult.newMemPtr;
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if (!array->data) return false;
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array->count = 0;
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@ -123,11 +244,16 @@ bool DqnArray_Grow(DqnArray<T> *array)
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size_t newCapacity = (size_t)(array->capacity * GROWTH_FACTOR);
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if (newCapacity == array->capacity) newCapacity++;
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T *newMem = (T *)Dqn_MemReallocInternal(array->data,
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(size_t)(newCapacity * sizeof(T)));
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if (newMem)
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size_t allocateSize = (size_t)newCapacity * sizeof(T);
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DqnMemAPICallbackResult memResult = {};
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DqnMemAPICallbackInfo info = DqnMemAPICallback_InfoAskReallocInternal(
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array->memAPI, array->data, allocateSize);
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array->memAPI.callback(info, &memResult);
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DQN_ASSERT(memResult.type == DqnMemAPICallbackType_Realloc);
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if (memResult.newMemPtr)
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{
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array->data = newMem;
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array->data = (T *)memResult.newMemPtr;
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array->capacity = newCapacity;
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return true;
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}
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@ -188,7 +314,12 @@ bool DqnArray_Free(DqnArray<T> *array)
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{
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if (array && array->data)
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{
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free(array->data);
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// TODO(doyle): Right now we assume free always works, and it probably should?
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DqnMemAPICallbackInfo info =
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DqnMemAPICallback_InfoAskFreeInternal(array->memAPI, array->data);
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array->memAPI.callback(info, NULL);
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array->data = NULL;
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array->count = 0;
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array->capacity = 0;
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return true;
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@ -466,21 +597,6 @@ DQN_FILE_SCOPE bool Dqn_WStrReverse(wchar_t *buf, const i32 bufSize);
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DQN_FILE_SCOPE i32 Dqn_WStrToI32(const wchar_t *const buf, const i32 bufSize);
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DQN_FILE_SCOPE i32 Dqn_I32ToWStr(i32 value, wchar_t *buf, i32 bufSize);
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////////////////////////////////////////////////////////////////////////////////
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// Win32 Specific
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////////////////////////////////////////////////////////////////////////////////
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#ifdef DQN_WIN32_IMPLEMENTATION
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// Out is a pointer to the buffer to receive the characters.
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// outLen is the length/capacity of the out buffer
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DQN_FILE_SCOPE bool DqnWin32_UTF8ToWChar (const char *const in, wchar_t *const out, const i32 outLen);
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DQN_FILE_SCOPE bool DqnWin32_WCharToUTF8 (const wchar_t *const in, char *const out, const i32 outLen);
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DQN_FILE_SCOPE void DqnWin32_GetClientDim (const HWND window, LONG *width, LONG *height);
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DQN_FILE_SCOPE void DqnWin32_GetRectDim (RECT rect, LONG *width, LONG *height);
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DQN_FILE_SCOPE void DqnWin32_DisplayLastError(const char *const errorPrefix);
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DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *const errorPrefix);
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#endif /* DQN_WIN32_IMPLEMENTATION */
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////////////////////////////////////////////////////////////////////////////////
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// File Operations
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////////////////////////////////////////////////////////////////////////////////
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@ -549,7 +665,7 @@ typedef struct DqnRandPCGState
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// automatically created by using rdtsc. The generator is not valid until it's
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// been seeded.
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DQN_FILE_SCOPE void DqnRnd_PCGInitWithSeed(DqnRandPCGState *pcg, u32 seed);
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DQN_FILE_SCOPE void DqnRnd_PCGInit(DqnRandPCGState *pcg);
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DQN_FILE_SCOPE void DqnRnd_PCGInit (DqnRandPCGState *pcg);
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// Returns a random number N between [0, 0xFFFFFFFF]
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DQN_FILE_SCOPE u32 DqnRnd_PCGNext (DqnRandPCGState *pcg);
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@ -558,61 +674,29 @@ DQN_FILE_SCOPE f32 DqnRnd_PCGNextf(DqnRandPCGState *pcg);
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// Returns a random integer N between [min, max]
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DQN_FILE_SCOPE i32 DqnRnd_PCGRange(DqnRandPCGState *pcg, i32 min, i32 max);
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////////////////////////////////////////////////////////////////////////////////
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// PushBuffer Header
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////////////////////////////////////////////////////////////////////////////////
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typedef struct DqnMemBufferBlock
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{
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u8 *memory;
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size_t used;
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size_t size;
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DqnMemBufferBlock *prevBlock;
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} DqnMemBufferBlock;
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enum DqnMemBufferFlag
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{
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DqnMemBufferFlag_IsExpandable = (1 << 0),
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DqnMemBufferFlag_IsFixedMemoryFromUser = (1 << 1),
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};
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typedef struct DqnMemBuffer
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{
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DqnMemBufferBlock *block;
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u32 flags;
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i32 tempBufferCount;
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u32 byteAlign;
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} DqnMemBuffer;
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typedef struct DqnTempBuffer
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{
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DqnMemBuffer *buffer;
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DqnMemBufferBlock *startingBlock;
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size_t used;
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} DqnTempBuffer;
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DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedMem (DqnMemBuffer *const buffer, u8 *const mem, const size_t memSize, const u32 byteAlign = 4); // Use preallocated memory, no further allocations, returns NULL on allocate if out of space
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DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedSize(DqnMemBuffer *const buffer, size_t size, const bool clearToZero, const u32 byteAlign = 4); // Single allocation from platform, no further allocations, returns NULL of allocate if out of space
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DQN_FILE_SCOPE bool DqnMemBuffer_Init (DqnMemBuffer *const buffer, size_t size, const bool clearToZero, const u32 byteAlign = 4); // Allocates from platform dynamically as space runs out
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DQN_FILE_SCOPE void *DqnMemBuffer_Allocate (DqnMemBuffer *const buffer, size_t size); // Returns NULL if out of space, or platform allocation fails, or buffer is using fixed memory/size
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DQN_FILE_SCOPE void DqnMemBuffer_FreeLastBuffer(DqnMemBuffer *const buffer); // Frees the last-most block to the buffer, if it's the only block, the buffer will free that block then, next allocate with attach a block.
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DQN_FILE_SCOPE void DqnMemBuffer_Free (DqnMemBuffer *const buffer); // Frees all blocks belonging to this buffer
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DQN_FILE_SCOPE void DqnMemBuffer_ClearCurrBlock(DqnMemBuffer *const buffer, const bool clearToZero); // Reset the current blocks usage ptr to 0
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// TempBuffer is only required for the function. Once BeginTempRegion() is called, subsequent allocation calls can be made using the original buffer.
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// Upon EndTempRegion() the original buffer will free any additional blocks it allocated during the temp region and revert to the original
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// state before BeginTempRegion() was called.
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// WARNING: Any calls to Free/Clear functions in a TempRegion will invalidate and trash the buffer structure.
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// TODO(doyle): Look into a way of disallowing calls to free/clear in temp regions
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DQN_FILE_SCOPE DqnTempBuffer DqnMemBuffer_BeginTempRegion(DqnMemBuffer *const buffer);
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DQN_FILE_SCOPE void DqnMemBuffer_EndTempRegion (DqnTempBuffer tempBuffer);
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#endif /* DQN_H */
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#if (defined(_WIN32) || defined(_WIN64)) && defined(DQN_WIN32_IMPLEMENTATION)
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////////////////////////////////////////////////////////////////////////////////
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// Win32 Specific
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////////////////////////////////////////////////////////////////////////////////
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#define WIN32_LEAN_AND_MEAN
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#include <Windows.h>
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#define DQN_WIN32_ERROR_BOX(text, title) MessageBoxA(NULL, text, title, MB_OK);
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// Out is a pointer to the buffer to receive the characters.
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// outLen is the length/capacity of the out buffer
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DQN_FILE_SCOPE bool DqnWin32_UTF8ToWChar (const char *const in, wchar_t *const out, const i32 outLen);
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DQN_FILE_SCOPE bool DqnWin32_WCharToUTF8 (const wchar_t *const in, char *const out, const i32 outLen);
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DQN_FILE_SCOPE void DqnWin32_GetClientDim (const HWND window, LONG *width, LONG *height);
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DQN_FILE_SCOPE void DqnWin32_GetRectDim (RECT rect, LONG *width, LONG *height);
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DQN_FILE_SCOPE void DqnWin32_DisplayLastError(const char *const errorPrefix);
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DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *const errorPrefix);
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#endif /* DQN_WIN32_IMPLEMENTATION */
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#ifndef DQN_INI_H
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#define DQN_INI_H
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////////////////////////////////////////////////////////////////////////////////
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@ -1148,37 +1232,34 @@ STBSP__PUBLICDEF void STB_SPRINTF_DECORATE(set_separators)(char comma, char peri
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// #define DQN_INI_IMPLEMENTATION
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#define DQN_INI_STRLEN(s) Dqn_strlen(s)
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////////////////////////////////////////////////////////////////////////////////
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// Memory
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// DqnMemory - Default Memory Routines
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////////////////////////////////////////////////////////////////////////////////
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// NOTE: All memory allocations in dqn.h go through these functions. So they can
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// be rerouted fairly easily especially for platform specific mallocs.
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FILE_SCOPE void *Dqn_MemAllocInternal(size_t size, bool zeroClear)
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DQN_FILE_SCOPE void *DqnMem_Alloc(size_t size)
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{
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void *result = NULL;
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if (zeroClear)
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{
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result = calloc(1, size);
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}
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else
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{
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result = malloc(size);
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}
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void *result = malloc(size);
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return result;
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}
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FILE_SCOPE void Dqn_MemClearInternal(void *memory, u8 clearValue, size_t size)
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DQN_FILE_SCOPE void *DqnMem_Calloc(size_t size)
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{
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void *result = calloc(1, size);
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return result;
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}
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DQN_FILE_SCOPE void DqnMem_Clear(void *memory, u8 clearValue, size_t size)
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{
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if (memory) memset(memory, clearValue, size);
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}
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FILE_SCOPE void *Dqn_MemReallocInternal(void *memory, size_t newSize)
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DQN_FILE_SCOPE void *DqnMem_Realloc(void *memory, size_t newSize)
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{
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void *result = realloc(memory, newSize);
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return result;
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}
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FILE_SCOPE void Dqn_MemFreeInternal(void *memory)
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DQN_FILE_SCOPE void DqnMem_Free(void *memory)
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{
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if (memory)
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{
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@ -1187,6 +1268,367 @@ FILE_SCOPE void Dqn_MemFreeInternal(void *memory)
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// DqnMemBuffer - Memory API, For using custom allocators
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////////////////////////////////////////////////////////////////////////////////
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FILE_SCOPE DqnMemBufferBlock *
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DqnMemBuffer_AllocBlockInternal(u32 byteAlign, size_t size)
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{
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size_t alignedSize = DQN_ALIGN_POW_N(size, byteAlign);
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size_t totalSize = alignedSize + sizeof(DqnMemBufferBlock);
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DqnMemBufferBlock *result = (DqnMemBufferBlock *)DqnMem_Calloc(totalSize);
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if (!result) return NULL;
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result->memory = (u8 *)result + sizeof(*result);
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result->size = alignedSize;
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result->used = 0;
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return result;
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}
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|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedMem(DqnMemBuffer *const buffer,
|
||||
u8 *const mem,
|
||||
const size_t memSize,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
if (!buffer || !mem) return false;
|
||||
DQN_ASSERT(!buffer->block);
|
||||
|
||||
// TODO(doyle): Better logging
|
||||
if (memSize < sizeof(DqnMemBufferBlock))
|
||||
DQN_ASSERT(DQN_INVALID_CODE_PATH);
|
||||
|
||||
buffer->block = (DqnMemBufferBlock *)mem;
|
||||
buffer->block->memory = mem + sizeof(DqnMemBufferBlock);
|
||||
buffer->block->used = 0;
|
||||
buffer->block->size = memSize - sizeof(DqnMemBufferBlock);
|
||||
buffer->flags = DqnMemBufferFlag_IsFixedMemoryFromUser;
|
||||
|
||||
const u32 DEFAULT_ALIGNMENT = 4;
|
||||
buffer->tempBufferCount = 0;
|
||||
buffer->byteAlign = (byteAlign == 0) ? DEFAULT_ALIGNMENT : byteAlign;
|
||||
return true;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_Init(DqnMemBuffer *const buffer, size_t size,
|
||||
const bool clearToZero,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
if (!buffer || size <= 0) return false;
|
||||
DQN_ASSERT(!buffer->block);
|
||||
|
||||
buffer->block = DqnMemBuffer_AllocBlockInternal(byteAlign, size);
|
||||
if (!buffer->block) return false;
|
||||
|
||||
buffer->tempBufferCount = 0;
|
||||
buffer->byteAlign = byteAlign;
|
||||
buffer->flags = DqnMemBufferFlag_IsExpandable;
|
||||
return true;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedSize(DqnMemBuffer *const buffer,
|
||||
size_t size,
|
||||
const bool clearToZero,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
bool result = DqnMemBuffer_Init(buffer, size, byteAlign);
|
||||
if (result)
|
||||
{
|
||||
buffer->flags = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void *DqnMemBuffer_Allocate(DqnMemBuffer *const buffer, size_t size)
|
||||
{
|
||||
if (!buffer || size == 0) return NULL;
|
||||
|
||||
size_t alignedSize = DQN_ALIGN_POW_N(size, buffer->byteAlign);
|
||||
if (!buffer->block ||
|
||||
(buffer->block->used + alignedSize) > buffer->block->size)
|
||||
{
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return NULL;
|
||||
|
||||
// TODO: Better notifying to user, out of space in buffer
|
||||
if (buffer->flags & DqnMemBufferFlag_IsExpandable)
|
||||
{
|
||||
size_t newBlockSize = DQN_MAX(alignedSize, buffer->block->size);
|
||||
DqnMemBufferBlock *newBlock = DqnMemBuffer_AllocBlockInternal(
|
||||
buffer->byteAlign, newBlockSize);
|
||||
if (!newBlock) return NULL;
|
||||
|
||||
newBlock->prevBlock = buffer->block;
|
||||
buffer->block = newBlock;
|
||||
}
|
||||
else
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
u8 *currPointer = buffer->block->memory + buffer->block->used;
|
||||
u8 *alignedResult = (u8 *)DQN_ALIGN_POW_N(currPointer, buffer->byteAlign);
|
||||
size_t alignmentOffset = (size_t)(alignedResult - currPointer);
|
||||
|
||||
void *result = alignedResult;
|
||||
buffer->block->used += (alignedSize + alignmentOffset);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void
|
||||
DqnMemBuffer_FreeLastBuffer(DqnMemBuffer *const buffer)
|
||||
{
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return;
|
||||
|
||||
DqnMemBufferBlock *prevBlock = buffer->block->prevBlock;
|
||||
DqnMem_Free(buffer->block);
|
||||
buffer->block = prevBlock;
|
||||
|
||||
// No more blocks, then last block has been freed
|
||||
if (!buffer->block) DQN_ASSERT(buffer->tempBufferCount == 0);
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_Free(DqnMemBuffer *buffer)
|
||||
{
|
||||
if (!buffer) return;
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return;
|
||||
|
||||
while (buffer->block)
|
||||
{
|
||||
DqnMemBuffer_FreeLastBuffer(buffer);
|
||||
}
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_ClearCurrBlock(DqnMemBuffer *const buffer,
|
||||
const bool clearToZero)
|
||||
{
|
||||
if (!buffer) return;
|
||||
if (buffer->block)
|
||||
{
|
||||
buffer->block->used = 0;
|
||||
if (clearToZero)
|
||||
{
|
||||
DqnMem_Clear(buffer->block->memory, 0,
|
||||
buffer->block->size);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE DqnTempBuffer
|
||||
DqnMemBuffer_BeginTempRegion(DqnMemBuffer *const buffer)
|
||||
{
|
||||
DqnTempBuffer result = {};
|
||||
result.buffer = buffer;
|
||||
result.startingBlock = buffer->block;
|
||||
result.used = buffer->block->used;
|
||||
|
||||
buffer->tempBufferCount++;
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_EndTempRegion(DqnTempBuffer tempBuffer)
|
||||
{
|
||||
DqnMemBuffer *buffer = tempBuffer.buffer;
|
||||
while (buffer->block != tempBuffer.startingBlock)
|
||||
DqnMemBuffer_FreeLastBuffer(buffer);
|
||||
|
||||
if (buffer->block)
|
||||
{
|
||||
DQN_ASSERT(buffer->block->used >= tempBuffer.used);
|
||||
buffer->block->used = tempBuffer.used;
|
||||
DQN_ASSERT(buffer->tempBufferCount >= 0);
|
||||
}
|
||||
buffer->tempBufferCount--;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// DqnMemAPI - Memory API, For using custom allocators
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
FILE_SCOPE inline DqnMemAPICallbackInfo
|
||||
DqnMemAPICallback_InfoAskReallocInternal(const DqnMemAPI memAPI,
|
||||
void *const oldMemPtr,
|
||||
const size_t size)
|
||||
{
|
||||
DqnMemAPICallbackInfo info = {};
|
||||
info.type = DqnMemAPICallbackType_Realloc;
|
||||
info.userContext = memAPI.userContext;
|
||||
info.newRequestSize = size;
|
||||
info.oldMemPtr = oldMemPtr;
|
||||
return info;
|
||||
}
|
||||
|
||||
FILE_SCOPE inline DqnMemAPICallbackInfo
|
||||
DqnMemAPICallback_InfoAskAllocInternal(const DqnMemAPI memAPI,
|
||||
const size_t size)
|
||||
{
|
||||
DqnMemAPICallbackInfo info = {};
|
||||
info.type = DqnMemAPICallbackType_Alloc;
|
||||
info.userContext = memAPI.userContext;
|
||||
info.requestSize = size;
|
||||
return info;
|
||||
}
|
||||
|
||||
FILE_SCOPE DqnMemAPICallbackInfo DqnMemAPICallback_InfoAskFreeInternal(
|
||||
const DqnMemAPI memAPI, void *const ptrToFree)
|
||||
{
|
||||
DqnMemAPICallbackInfo info = {};
|
||||
info.type = DqnMemAPICallbackType_Free;
|
||||
info.userContext = memAPI.userContext;
|
||||
info.ptrToFree = ptrToFree;
|
||||
return info;
|
||||
}
|
||||
|
||||
void DqnMemAPI_ValidateCallbackInfo(DqnMemAPICallbackInfo info)
|
||||
{
|
||||
DQN_ASSERT(!info.userContext);
|
||||
DQN_ASSERT(info.type != DqnMemAPICallbackType_Invalid);
|
||||
|
||||
switch(info.type)
|
||||
{
|
||||
case DqnMemAPICallbackType_Alloc:
|
||||
{
|
||||
DQN_ASSERT(info.requestSize > 0);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Realloc:
|
||||
{
|
||||
DQN_ASSERT(info.requestSize > 0);
|
||||
DQN_ASSERT(info.oldMemPtr);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Free:
|
||||
{
|
||||
// nothing to validate
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
FILE_SCOPE void
|
||||
DqnMemAPI_DefaultUseCallocCallbackInternal(DqnMemAPICallbackInfo info,
|
||||
DqnMemAPICallbackResult *result)
|
||||
{
|
||||
DqnMemAPI_ValidateCallbackInfo(info);
|
||||
switch(info.type)
|
||||
{
|
||||
case DqnMemAPICallbackType_Alloc:
|
||||
{
|
||||
result->type = info.type;
|
||||
result->newMemPtr = DqnMem_Alloc(info.requestSize);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Realloc:
|
||||
{
|
||||
result->type = info.type;
|
||||
result->newMemPtr =
|
||||
DqnMem_Realloc(info.oldMemPtr, info.newRequestSize);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Free:
|
||||
{
|
||||
// NOTE(doyle): We can pass in NULL as result if we're freeing since
|
||||
// there's nothing to return. But if the callback result has been
|
||||
// passed in, we can fill the type data out.
|
||||
if (result) result->type = info.type;
|
||||
DqnMem_Free(info.ptrToFree);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
FILE_SCOPE void
|
||||
DqnMemAPI_DefaultUseMemBufferCallbackInternal(DqnMemAPICallbackInfo info,
|
||||
DqnMemAPICallbackResult *result)
|
||||
{
|
||||
DqnMemAPI_ValidateCallbackInfo(info);
|
||||
DqnMemBuffer *const buffer = static_cast<DqnMemBuffer *>(info.userContext);
|
||||
|
||||
switch(info.type)
|
||||
{
|
||||
case DqnMemAPICallbackType_Alloc:
|
||||
{
|
||||
DQN_ASSERT(result);
|
||||
result->type = info.type;
|
||||
result->newMemPtr = DqnMemBuffer_Allocate(buffer, info.requestSize);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Realloc:
|
||||
{
|
||||
// NOTE(doyle): Realloc implies that our data must be contiguous.
|
||||
// We also assert that the supplied memory buffer is brand new, i.e.
|
||||
// the memory buffer is used exclusively for the MemAPI operations.
|
||||
// So if we don't have enough space, we can free the entire memory
|
||||
// buffer and reallocate.
|
||||
DQN_ASSERT(result);
|
||||
DQN_ASSERT(!buffer->block->prevBlock);
|
||||
|
||||
// TODO(doyle): In regards to above, we have no way of ensuring that
|
||||
// the user doesn't use this buffer elsewhere, which would
|
||||
// invalidate all our assumptions. We can fix this maybe, by making
|
||||
// the DefaultUseMemBuffer allocate its own DqnMemBuffer privately
|
||||
// that the user can't see externally to enforce this invariant.
|
||||
DqnMemBufferBlock tmpCopy = *buffer->block;
|
||||
|
||||
result->type = info.type;
|
||||
size_t alignedSize = DQN_ALIGN_POW_N(info.newRequestSize, buffer->byteAlign);
|
||||
if ((buffer->block->used + alignedSize) > buffer->block->size)
|
||||
DqnMemBuffer_Free(buffer);
|
||||
|
||||
result->newMemPtr = DqnMemBuffer_Allocate(buffer, alignedSize);
|
||||
if (!result->newMemPtr)
|
||||
{
|
||||
// TODO(doyle): This should be big warning. If it failed, system
|
||||
// must be out of memory. Since we are using a push buffer, and
|
||||
// we don't clear to zero on free AND we ensure that there's
|
||||
// only ever a singular block used.. then technically we can
|
||||
// restore data by restoring the block metadata which should
|
||||
// preserve the old data living here.
|
||||
*buffer->block = tmpCopy;
|
||||
}
|
||||
DQN_ASSERT(!buffer->block->prevBlock);
|
||||
}
|
||||
break;
|
||||
|
||||
case DqnMemAPICallbackType_Free:
|
||||
{
|
||||
// TODO(doyle): Freeing technically works, if we enforce that the
|
||||
// MemBuffer exclusively belongs to the MemAPI it's linked to.
|
||||
if (result) result->type = info.type;
|
||||
DqnMemBuffer_Free(buffer);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_DefaultUseCalloc()
|
||||
{
|
||||
DqnMemAPI result = {};
|
||||
result.callback = DqnMemAPI_DefaultUseCallocCallbackInternal;
|
||||
result.userContext = NULL;
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE DqnMemAPI DqnMemAPI_DefaultUseMemBuffer(DqnMemBuffer *const buffer)
|
||||
{
|
||||
// TODO(doyle): We assert that the buffer has to be a brand new mem buffer.
|
||||
// Is this the correct design choice?
|
||||
DQN_ASSERT(!buffer->block->prevBlock && buffer->block->used == 0);
|
||||
DQN_ASSERT(buffer);
|
||||
|
||||
DqnMemAPI result = {};
|
||||
result.callback = DqnMemAPI_DefaultUseMemBufferCallbackInternal;
|
||||
result.userContext = buffer;
|
||||
return result;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// Math
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
@ -2371,7 +2813,7 @@ DQN_FILE_SCOPE void DqnWin32_DisplayLastError(const char *const errorPrefix)
|
||||
NULL, error, 0, errorMsg, DQN_ARRAY_COUNT(errorMsg), NULL);
|
||||
|
||||
char formattedError[2048] = {};
|
||||
dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||||
Dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||||
DQN_WIN32_ERROR_BOX(formattedError, NULL);
|
||||
}
|
||||
|
||||
@ -2382,7 +2824,7 @@ DQN_FILE_SCOPE void DqnWin32_DisplayErrorCode(const DWORD error, const char *con
|
||||
NULL, error, 0, errorMsg, DQN_ARRAY_COUNT(errorMsg), NULL);
|
||||
|
||||
char formattedError[2048] = {};
|
||||
dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||||
Dqn_sprintf(formattedError, "%s: %s", errorPrefix, errorMsg);
|
||||
DQN_WIN32_ERROR_BOX(formattedError, NULL);
|
||||
}
|
||||
#endif // DQN_WIN32_PLATFROM
|
||||
@ -2595,26 +3037,26 @@ DQN_FILE_SCOPE char **DqnDir_Read(char *dir, u32 *numFiles)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char **list = (char **)Dqn_MemAllocInternal(
|
||||
sizeof(*list) * (currNumFiles), true);
|
||||
char **list = (char **)DqnMem_Calloc(
|
||||
sizeof(*list) * (currNumFiles));
|
||||
if (!list)
|
||||
{
|
||||
DQN_WIN32_ERROR_BOX("Dqn_MemAllocInternal() failed.", NULL);
|
||||
DQN_WIN32_ERROR_BOX("DqnMem_Alloc() failed.", NULL);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
for (u32 i = 0; i < currNumFiles; i++)
|
||||
{
|
||||
list[i] =
|
||||
(char *)Dqn_MemAllocInternal(sizeof(**list) * MAX_PATH, true);
|
||||
(char *)DqnMem_Calloc(sizeof(**list) * MAX_PATH);
|
||||
if (!list[i])
|
||||
{
|
||||
for (u32 j = 0; j < i; j++)
|
||||
{
|
||||
Dqn_MemFreeInternal(list[j]);
|
||||
DqnMem_Free(list[j]);
|
||||
}
|
||||
|
||||
DQN_WIN32_ERROR_BOX("Dqn_MemAllocInternal() failed.", NULL);
|
||||
DQN_WIN32_ERROR_BOX("DqnMem_Alloc() failed.", NULL);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
@ -2643,11 +3085,11 @@ DQN_FILE_SCOPE void DqnDir_ReadFree(char **fileList, u32 numFiles)
|
||||
{
|
||||
for (u32 i = 0; i < numFiles; i++)
|
||||
{
|
||||
if (fileList[i]) Dqn_MemFreeInternal(fileList[i]);
|
||||
if (fileList[i]) DqnMem_Free(fileList[i]);
|
||||
fileList[i] = NULL;
|
||||
}
|
||||
|
||||
Dqn_MemFreeInternal(fileList);
|
||||
DqnMem_Free(fileList);
|
||||
}
|
||||
}
|
||||
|
||||
@ -2769,182 +3211,6 @@ DQN_FILE_SCOPE i32 DqnRnd_PCGRange(DqnRandPCGState *pcg, i32 min, i32 max)
|
||||
return min + value;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// DqnMemBuffer Header
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
FILE_SCOPE DqnMemBufferBlock *
|
||||
DqnMemBuffer_AllocBlockInternal(u32 byteAlign, size_t size)
|
||||
{
|
||||
size_t alignedSize = DQN_ALIGN_POW_N(size, byteAlign);
|
||||
size_t totalSize = alignedSize + sizeof(DqnMemBufferBlock);
|
||||
|
||||
DqnMemBufferBlock *result = (DqnMemBufferBlock *)Dqn_MemAllocInternal(totalSize, true);
|
||||
if (!result) return NULL;
|
||||
|
||||
result->memory = (u8 *)result + sizeof(*result);
|
||||
result->size = alignedSize;
|
||||
result->used = 0;
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedMem(DqnMemBuffer *const buffer,
|
||||
u8 *const mem,
|
||||
const size_t memSize,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
if (!buffer || !mem) return false;
|
||||
DQN_ASSERT(!buffer->block);
|
||||
|
||||
// TODO(doyle): Better logging
|
||||
if (memSize < sizeof(DqnMemBufferBlock))
|
||||
DQN_ASSERT(DQN_INVALID_CODE_PATH);
|
||||
|
||||
buffer->block = (DqnMemBufferBlock *)mem;
|
||||
buffer->block->memory = mem + sizeof(DqnMemBufferBlock);
|
||||
buffer->block->used = 0;
|
||||
buffer->block->size = memSize - sizeof(DqnMemBufferBlock);
|
||||
buffer->flags = DqnMemBufferFlag_IsFixedMemoryFromUser;
|
||||
|
||||
const u32 DEFAULT_ALIGNMENT = 4;
|
||||
buffer->tempBufferCount = 0;
|
||||
buffer->byteAlign = (byteAlign == 0) ? DEFAULT_ALIGNMENT : byteAlign;
|
||||
return true;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_Init(DqnMemBuffer *const buffer, size_t size,
|
||||
const bool clearToZero,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
if (!buffer || size <= 0) return false;
|
||||
DQN_ASSERT(!buffer->block);
|
||||
|
||||
buffer->block = DqnMemBuffer_AllocBlockInternal(byteAlign, size);
|
||||
if (!buffer->block) return false;
|
||||
|
||||
buffer->tempBufferCount = 0;
|
||||
buffer->byteAlign = byteAlign;
|
||||
buffer->flags = DqnMemBufferFlag_IsExpandable;
|
||||
return true;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE bool DqnMemBuffer_InitWithFixedSize(DqnMemBuffer *const buffer,
|
||||
size_t size,
|
||||
const bool clearToZero,
|
||||
const u32 byteAlign)
|
||||
{
|
||||
bool result = DqnMemBuffer_Init(buffer, size, byteAlign);
|
||||
if (result)
|
||||
{
|
||||
buffer->flags = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void *DqnMemBuffer_Allocate(DqnMemBuffer *const buffer, size_t size)
|
||||
{
|
||||
if (!buffer || size == 0) return NULL;
|
||||
|
||||
size_t alignedSize = DQN_ALIGN_POW_N(size, buffer->byteAlign);
|
||||
if (!buffer->block ||
|
||||
(buffer->block->used + alignedSize) > buffer->block->size)
|
||||
{
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return NULL;
|
||||
|
||||
// TODO: Better notifying to user, out of space in buffer
|
||||
if (buffer->flags & DqnMemBufferFlag_IsExpandable)
|
||||
{
|
||||
size_t newBlockSize = DQN_MAX(alignedSize, buffer->block->size);
|
||||
DqnMemBufferBlock *newBlock = DqnMemBuffer_AllocBlockInternal(
|
||||
buffer->byteAlign, newBlockSize);
|
||||
if (!newBlock) return NULL;
|
||||
|
||||
newBlock->prevBlock = buffer->block;
|
||||
buffer->block = newBlock;
|
||||
}
|
||||
else
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
u8 *currPointer = buffer->block->memory + buffer->block->used;
|
||||
u8 *alignedResult = (u8 *)DQN_ALIGN_POW_N(currPointer, buffer->byteAlign);
|
||||
size_t alignmentOffset = (size_t)(alignedResult - currPointer);
|
||||
|
||||
void *result = alignedResult;
|
||||
buffer->block->used += (alignedSize + alignmentOffset);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void
|
||||
DqnMemBuffer_FreeLastBuffer(DqnMemBuffer *const buffer)
|
||||
{
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return;
|
||||
|
||||
DqnMemBufferBlock *prevBlock = buffer->block->prevBlock;
|
||||
Dqn_MemFreeInternal(buffer->block);
|
||||
buffer->block = prevBlock;
|
||||
|
||||
// No more blocks, then last block has been freed
|
||||
if (!buffer->block) DQN_ASSERT(buffer->tempBufferCount == 0);
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_Free(DqnMemBuffer *buffer)
|
||||
{
|
||||
if (!buffer) return;
|
||||
if (buffer->flags & DqnMemBufferFlag_IsFixedMemoryFromUser) return;
|
||||
|
||||
while (buffer->block)
|
||||
{
|
||||
DqnMemBuffer_FreeLastBuffer(buffer);
|
||||
}
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_ClearCurrBlock(DqnMemBuffer *const buffer,
|
||||
const bool clearToZero)
|
||||
{
|
||||
if (!buffer) return;
|
||||
if (buffer->block)
|
||||
{
|
||||
buffer->block->used = 0;
|
||||
if (clearToZero)
|
||||
{
|
||||
Dqn_MemClearInternal(buffer->block->memory, 0,
|
||||
buffer->block->size);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE DqnTempBuffer
|
||||
DqnMemBuffer_BeginTempRegion(DqnMemBuffer *const buffer)
|
||||
{
|
||||
DqnTempBuffer result = {};
|
||||
result.buffer = buffer;
|
||||
result.startingBlock = buffer->block;
|
||||
result.used = buffer->block->used;
|
||||
|
||||
buffer->tempBufferCount++;
|
||||
return result;
|
||||
}
|
||||
|
||||
DQN_FILE_SCOPE void DqnMemBuffer_EndTempRegion(DqnTempBuffer tempBuffer)
|
||||
{
|
||||
DqnMemBuffer *buffer = tempBuffer.buffer;
|
||||
while (buffer->block != tempBuffer.startingBlock)
|
||||
DqnMemBuffer_FreeLastBuffer(buffer);
|
||||
|
||||
if (buffer->block)
|
||||
{
|
||||
DQN_ASSERT(buffer->block->used >= tempBuffer.used);
|
||||
buffer->block->used = tempBuffer.used;
|
||||
DQN_ASSERT(buffer->tempBufferCount >= 0);
|
||||
}
|
||||
buffer->tempBufferCount--;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// STB_Sprintf
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
@ -226,7 +226,7 @@ void StringsTest()
|
||||
DQN_ASSERT(Dqn_StrHasSubstring(a, lenA, b, lenB) == true);
|
||||
DQN_ASSERT(Dqn_StrHasSubstring(a, lenA, "iro",
|
||||
Dqn_strlen("iro")) == false);
|
||||
DQN_ASSERT(Dqn_StrHasSubstring(b, lenB, a, lenA) == true);
|
||||
DQN_ASSERT(Dqn_StrHasSubstring(b, lenB, a, lenA) == false);
|
||||
DQN_ASSERT(Dqn_StrHasSubstring("iro", Dqn_strlen("iro"), a,
|
||||
lenA) == false);
|
||||
DQN_ASSERT(Dqn_StrHasSubstring("", 0, "iro", 4) == false);
|
||||
|
@ -1,7 +1,7 @@
|
||||
|
||||
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||
# Visual Studio 14
|
||||
VisualStudioVersion = 14.0.25420.1
|
||||
# Visual Studio 15
|
||||
VisualStudioVersion = 15.0.26403.3
|
||||
MinimumVisualStudioVersion = 10.0.40219.1
|
||||
Project("{911E67C6-3D85-4FCE-B560-20A9C3E3FF48}") = "dqnt_unit_test", "..\bin\dqnt_unit_test.exe", "{87785192-6F49-4F85-AA0D-F0AFA5CCCDDA}"
|
||||
ProjectSection(DebuggerProjectSystem) = preProject
|
||||
@ -21,7 +21,7 @@ Global
|
||||
Release|x86 = Release|x86
|
||||
EndGlobalSection
|
||||
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||
{87785192-6F49-4F85-AA0D-F0AFA5CCCDDA}.Release|x86.ActiveCfg = Release|x86
|
||||
{87785192-6F49-4F85-AA0D-F0AFA5CCCDDA}.Release|x86.ActiveCfg = Release|x64
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
|
Loading…
Reference in New Issue
Block a user