mirror of
https://github.com/yquake2/yquake2remaster.git
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gl3,gl4: Reuse HandmadeMath and DG_dynarr
This commit is contained in:
Denis Pauk
parent
a08a8d35e1
commit
4c2c94beea
11 changed files with 10 additions and 3423 deletions
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@ -625,8 +625,8 @@ set(GL3-Header
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${REF_SRC_DIR}/constants/anormtab.h
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${REF_SRC_DIR}/constants/anormtab.h
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${REF_SRC_DIR}/constants/warpsin.h
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${REF_SRC_DIR}/constants/warpsin.h
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${REF_SRC_DIR}/files/stb_image.h
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${REF_SRC_DIR}/files/stb_image.h
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${REF_SRC_DIR}/gl3/header/DG_dynarr.h
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${REF_SRC_DIR}/files/DG_dynarr.h
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${REF_SRC_DIR}/gl3/header/HandmadeMath.h
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${REF_SRC_DIR}/files/HandmadeMath.h
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${REF_SRC_DIR}/gl3/header/local.h
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${REF_SRC_DIR}/gl3/header/local.h
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${REF_SRC_DIR}/gl3/header/model.h
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${REF_SRC_DIR}/gl3/header/model.h
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${COMMON_SRC_DIR}/header/shared.h
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${COMMON_SRC_DIR}/header/shared.h
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@ -30,10 +30,10 @@
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#include "header/local.h"
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#include "header/local.h"
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#define HANDMADE_MATH_IMPLEMENTATION
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#define HANDMADE_MATH_IMPLEMENTATION
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#include "header/HandmadeMath.h"
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#include "../files/HandmadeMath.h"
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#define DG_DYNARR_IMPLEMENTATION
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#define DG_DYNARR_IMPLEMENTATION
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#include "header/DG_dynarr.h"
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#include "../files/DG_dynarr.h"
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#ifdef YQ2_GL3_GLES3
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#ifdef YQ2_GL3_GLES3
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#define REF_VERSION "Yamagi Quake II OpenGL ES3 Refresher"
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#define REF_VERSION "Yamagi Quake II OpenGL ES3 Refresher"
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@ -27,7 +27,7 @@
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#include "header/local.h"
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#include "header/local.h"
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#include "header/DG_dynarr.h"
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#include "../files/DG_dynarr.h"
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#define NUMVERTEXNORMALS 162
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#define NUMVERTEXNORMALS 162
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#define SHADEDOT_QUANT 16
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#define SHADEDOT_QUANT 16
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@ -56,7 +56,7 @@
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#include "../../ref_shared.h"
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#include "../../ref_shared.h"
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#include "HandmadeMath.h"
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#include "../../files/HandmadeMath.h"
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#if 0 // only use this for development ..
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#if 0 // only use this for development ..
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#define STUB_ONCE(msg) do { \
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#define STUB_ONCE(msg) do { \
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@ -30,10 +30,10 @@
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#include "header/local.h"
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#include "header/local.h"
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#define HANDMADE_MATH_IMPLEMENTATION
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#define HANDMADE_MATH_IMPLEMENTATION
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#include "header/HandmadeMath.h"
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#include "../files/HandmadeMath.h"
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#define DG_DYNARR_IMPLEMENTATION
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#define DG_DYNARR_IMPLEMENTATION
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#include "header/DG_dynarr.h"
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#include "../files/DG_dynarr.h"
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#ifdef YQ2_GL3_GLES3
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#ifdef YQ2_GL3_GLES3
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#define REF_VERSION "Yamagi Quake II OpenGL ES3 Refresher"
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#define REF_VERSION "Yamagi Quake II OpenGL ES3 Refresher"
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@ -27,7 +27,7 @@
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#include "header/local.h"
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#include "header/local.h"
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#include "header/DG_dynarr.h"
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#include "../files/DG_dynarr.h"
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#define NUMVERTEXNORMALS 162
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#define NUMVERTEXNORMALS 162
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#define SHADEDOT_QUANT 16
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#define SHADEDOT_QUANT 16
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@ -1,960 +0,0 @@
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/*
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* A header-only typesafe dynamic array implementation for plain C,
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* kinda like C++ std::vector. This code is compatible with C++, but should
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* only be used with POD (plain old data) types, as it uses memcpy() etc
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* instead of copy/move construction/assignment.
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* It requires a new type (created with the DA_TYPEDEF(ELEMENT_TYPE, ARRAY_TYPE_NAME)
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* macro) for each kind of element you want to put in a dynamic array; however
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* the "functions" to manipulate the array are actually macros and the same
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* for all element types.
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* The array elements are accessed via dynArr.p[i] or da_get(dynArr, i)
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* - the latter checks whether i is a valid index and asserts if not.
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*
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* One thing to keep in mind is that, because of using macros, the arguments to
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* the "functions" are usually evaluated more than once, so you should avoid
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* putting things with side effect (like function-calls with side effects or i++)
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* into them. Notable exceptions are the value arguments (v) of da_push()
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* and da_insert(), so it's still ok to do da_push(arr, fun_with_sideffects());
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* or da_insert(a, 3, x++);
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*
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* The function-like da_* macros are short aliases of dg_dynarr_* macros.
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* If the short names clash with anything in your code or other headers
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* you are using, you can, before #including this header, do
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* #define DG_DYNARR_NO_SHORTNAMES
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* and use the long dg_dynarr_* forms of the macros instead.
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*
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* Using this library in your project:
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* Put this file somewhere in your project.
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* In *one* of your .c/.cpp files, do
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* #define DG_DYNARR_IMPLEMENTATION
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* #include "DG_dynarr.h"
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* to create the implementation of this library in that file.
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* You can just #include "DG_dynarr.h" (without the #define) in other source
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* files to use it there.
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*
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* See below this comment block for a usage example.
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*
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* You can #define your own allocators, assertion and the amount of runtime
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* checking of indexes, see CONFIGURATION section in the code for more information.
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*
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*
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* This is heavily inspired by Sean Barrett's stretchy_buffer.h
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* ( see: https://github.com/nothings/stb/blob/master/stretchy_buffer.h )
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* However I wanted to have a struct that holds the array pointer and the length
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* and capacity, so that struct always remains at the same address while the
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* array memory might be reallocated.
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* I can live with arr.p[i] instead of arr[i], but I like how he managed to use
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* macros to create an API that doesn't force the user to specify the stored
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* type over and over again, so I stole some of his tricks :-)
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*
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* This has been tested with GCC 4.8 and clang 3.8 (-std=gnu89, -std=c99 and as C++;
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* -std=c89 works if you convert the C++-style comments to C comments) and
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* Microsoft Visual Studio 6 and 2010 (32bit) and 2013 (32bit and 64bit).
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* I guess it works with all (recentish) C++ compilers and C compilers supporting
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* C99 or even C89 + C++ comments (otherwise converting the comments should help).
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*
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* (C) 2016 Daniel Gibson
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*
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* LICENSE
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* This software is dual-licensed to the public domain and under the following
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* license: you are granted a perpetual, irrevocable license to copy, modify,
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* publish, and distribute this file as you see fit.
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* No warranty implied; use at your own risk.
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*/
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#if 0 // Usage Example:
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#define DG_DYNARR_IMPLEMENTATION // this define is only needed in *one* .c/.cpp file!
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#include "DG_dynarr.h"
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DA_TYPEDEF(int, MyIntArrType); // creates MyIntArrType - a dynamic array for ints
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void printIntArr(MyIntArrType* arr, const char* name)
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{
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// note that arr is a pointer here, so use *arr in the da_*() functions.
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printf("%s = {", name);
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if(da_count(*arr) > 0)
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printf(" %d", arr->p[0]);
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for(int i=1; i<da_count(*arr); ++i)
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printf(", %d", arr->p[i]);
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printf(" }\n");
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}
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void myFunction()
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{
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MyIntArrType a1 = {0}; // make sure to zero out the struct
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// instead of = {0}; you could also call da_init(a1);
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da_push(a1, 42);
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assert(da_count(a1) == 1 && a1.p[0] == 42);
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int* addedElements = da_addn_uninit(a1, 3);
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assert(da_count(a1) == 4);
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for(size_t i=0; i<3; ++i)
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addedElements[i] = i+5;
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printIntArr(&a1, "a1"); // "a1 = { 42, 5, 6, 7 }"
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MyIntArrType a2;
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da_init(a2);
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da_addn(a2, a1.p, da_count(a1)); // copy all elements from a1 to a2
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assert(da_count(a2) == 4);
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da_insert(a2, 1, 11);
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printIntArr(&a2, "a2"); // "a2 = { 42, 11, 5, 6, 7 }"
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da_delete(a2, 2);
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printIntArr(&a2, "a2"); // "a2 = { 42, 11, 6, 7 }"
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da_deletefast(a2, 0);
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printIntArr(&a2, "a2"); // "a2 = { 7, 11, 6 }"
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da_push(a1, 3);
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printIntArr(&a1, "a1"); // "a1 = { 42, 5, 6, 7, 3 }"
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int x=da_pop(a1);
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printf("x = %d\n", x); // "x = 3"
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printIntArr(&a1, "a1"); // "a1 = { 42, 5, 6, 7 }"
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da_free(a1); // make sure not to leak memory!
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da_free(a2);
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}
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#endif // 0 (usage example)
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#ifndef DG__DYNARR_H
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#define DG__DYNARR_H
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// ######### CONFIGURATION #########
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// following: some #defines that you can tweak to your liking
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// you can reduce some overhead by defining DG_DYNARR_INDEX_CHECK_LEVEL to 2, 1 or 0
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#ifndef DG_DYNARR_INDEX_CHECK_LEVEL
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// 0: (almost) no index checking
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// 1: macros "returning" something return a.p[0] or NULL if the index was invalid
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// 2: assertions in all macros taking indexes that make sure they're valid
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// 3: 1 and 2
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#define DG_DYNARR_INDEX_CHECK_LEVEL 3
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#endif // DG_DYNARR_INDEX_CHECK_LEVEL
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// you can #define your own DG_DYNARR_ASSERT(condition, msgstring)
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// that will be used for all assertions in this code.
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#ifndef DG_DYNARR_ASSERT
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#include <assert.h>
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#define DG_DYNARR_ASSERT(cond, msg) assert((cond) && msg)
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#endif
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// you can #define DG_DYNARR_OUT_OF_MEMORY to some code that will be executed
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// if allocating memory fails
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// it's needed only before the #define DG_DYNARR_IMPLEMENTATION #include of
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// this header, so the following is here only for reference and commented out
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/*
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#ifndef DG_DYNARR_OUT_OF_MEMORY
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#define DG_DYNARR_OUT_OF_MEMORY DG_DYNARR_ASSERT(0, "Out of Memory!");
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#endif
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*/
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// By default, C's malloc(), realloc() and free() is used to allocate/free heap memory
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// (see beginning of "#ifdef DG_DYNARR_IMPLEMENTATION" block below).
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// You can #define DG_DYNARR_MALLOC, DG_DYNARR_REALLOC and DG_DYNARR_FREE yourself
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// to provide alternative implementations like Win32 Heap(Re)Alloc/HeapFree
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// it's needed only before the #define DG_DYNARR_IMPLEMENTATION #include of
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// this header, so the following is here only for reference and commented out
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/*
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#define DG_DYNARR_MALLOC(elemSize, numElems) malloc(elemSize*numElems)
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// oldNumElems is not used for C's realloc, but maybe you need it for
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// your allocator to copy the old elements over
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#define DG_DYNARR_REALLOC(ptr, elemSize, oldNumElems, newCapacity) \
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realloc(ptr, elemSize*newCapacity);
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#define DG_DYNARR_FREE(ptr) free(ptr)
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*/
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// if you want to prepend something to the non inline (DG_DYNARR_INLINE) functions,
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// like "__declspec(dllexport)" or whatever, #define DG_DYNARR_DEF
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#ifndef DG_DYNARR_DEF
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// by defaults it's empty.
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#define DG_DYNARR_DEF
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#endif
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// some functions are inline, in case your compiler doesn't like "static inline"
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// but wants "__inline__" or something instead, #define DG_DYNARR_INLINE accordingly.
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#ifndef DG_DYNARR_INLINE
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// for pre-C99 compilers you might have to use something compiler-specific (or maybe only "static")
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#ifdef _MSC_VER
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#define DG_DYNARR_INLINE static __inline
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#else
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#define DG_DYNARR_INLINE static inline
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#endif
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#endif
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// ############### Short da_* aliases for the long names ###############
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#ifndef DG_DYNARR_NO_SHORTNAMES
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// this macro is used to create an array type (struct) for elements of TYPE
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// use like DA_TYPEDEF(int, MyIntArrType); MyIntArrType ia = {0}; da_push(ia, 42); ...
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#define DA_TYPEDEF(TYPE, NewArrayTypeName) \
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DG_DYNARR_TYPEDEF(TYPE, NewArrayTypeName)
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// makes sure the array is initialized and can be used.
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// either do YourArray arr = {0}; or YourArray arr; da_init(arr);
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#define da_init(a) \
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dg_dynarr_init(a)
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/*
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* This allows you to provide an external buffer that'll be used as long as it's big enough
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* once you add more elements than buf can hold, fresh memory will be allocated on the heap
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* Use like:
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* DA_TYPEDEF(double, MyDoubleArrType);
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* MyDoubleArrType arr;
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* double buf[8];
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* dg_dynarr_init_external(arr, buf, 8);
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* dg_dynarr_push(arr, 1.23);
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* ...
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*/
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#define da_init_external(a, buf, buf_cap) \
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dg_dynarr_init_external(a, buf, buf_cap)
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// use this to free the memory allocated by dg_dynarr once you don't need the array anymore
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// Note: it is safe to add new elements to the array after da_free()
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// it will allocate new memory, just like it would directly after da_init()
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#define da_free(a) \
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dg_dynarr_free(a)
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// add an element to the array (appended at the end)
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#define da_push(a, v) \
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dg_dynarr_push(a, v)
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// add an element to the array (appended at the end)
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// does the same as push, just for consistency with addn (like insert and insertn)
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#define da_add(a, v) \
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dg_dynarr_add(a, v)
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// append n elements to a and initialize them from array vals, doesn't return anything
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// ! vals (and all other args) are evaluated multiple times !
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#define da_addn(a, vals, n) \
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dg_dynarr_addn(a, vals, n)
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// add n elements to the end of the array and zeroes them with memset()
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// returns pointer to first added element, NULL if out of memory (array is empty then)
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#define da_addn_zeroed(a, n) \
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dg_dynarr_addn_zeroed(a, n)
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// add n elements to the end of the array, will remain uninitialized
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// returns pointer to first added element, NULL if out of memory (array is empty then)
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#define da_addn_uninit(a, n) \
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dg_dynarr_addn_uninit(a, n)
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// insert a single value v at index idx
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#define da_insert(a, idx, v) \
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dg_dynarr_insert(a, idx, v)
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// insert n elements into a at idx, initialize them from array vals
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// doesn't return anything
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// ! vals (and all other args) is evaluated multiple times !
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#define da_insertn(a, idx, vals, n) \
|
|
||||||
dg_dynarr_insertn(a, idx, vals, n)
|
|
||||||
|
|
||||||
// insert n elements into a at idx and zeroe them with memset()
|
|
||||||
// returns pointer to first inserted element or NULL if out of memory
|
|
||||||
#define da_insertn_zeroed(a, idx, n) \
|
|
||||||
dg_dynarr_insertn_zeroed(a, idx, n)
|
|
||||||
|
|
||||||
// insert n uninitialized elements into a at idx;
|
|
||||||
// returns pointer to first inserted element or NULL if out of memory
|
|
||||||
#define da_insertn_uninit(a, idx, n) \
|
|
||||||
dg_dynarr_insertn_uninit(a, idx, n)
|
|
||||||
|
|
||||||
// set a single value v at index idx - like "a.p[idx] = v;" but with checks (unless disabled)
|
|
||||||
#define da_set(a, idx, v) \
|
|
||||||
dg_dynarr_set(a, idx, v)
|
|
||||||
|
|
||||||
// overwrite n elements of a, starting at idx, with values from array vals
|
|
||||||
// doesn't return anything
|
|
||||||
// ! vals (and all other args) is evaluated multiple times !
|
|
||||||
#define da_setn(a, idx, vals, n) \
|
|
||||||
dg_dynarr_setn(a, idx, vals, n)
|
|
||||||
|
|
||||||
// delete the element at idx, moving all following elements (=> keeps order)
|
|
||||||
#define da_delete(a, idx) \
|
|
||||||
dg_dynarr_delete(a, idx)
|
|
||||||
|
|
||||||
// delete n elements starting at idx, moving all following elements (=> keeps order)
|
|
||||||
#define da_deleten(a, idx, n) \
|
|
||||||
dg_dynarr_deleten(a, idx, n)
|
|
||||||
|
|
||||||
// delete the element at idx, move the last element there (=> doesn't keep order)
|
|
||||||
#define da_deletefast(a, idx) \
|
|
||||||
dg_dynarr_deletefast(a, idx)
|
|
||||||
|
|
||||||
// delete n elements starting at idx, move the last n elements there (=> doesn't keep order)
|
|
||||||
#define da_deletenfast(a, idx, n) \
|
|
||||||
dg_dynarr_deletenfast(a, idx, n)
|
|
||||||
|
|
||||||
// removes all elements from the array, but does not free the buffer
|
|
||||||
// (if you want to free the buffer too, just use da_free())
|
|
||||||
#define da_clear(a) \
|
|
||||||
dg_dynarr_clear(a)
|
|
||||||
|
|
||||||
// sets the logical number of elements in the array
|
|
||||||
// if cnt > dg_dynarr_count(a), the logical count will be increased accordingly
|
|
||||||
// and the new elements will be uninitialized
|
|
||||||
#define da_setcount(a, cnt) \
|
|
||||||
dg_dynarr_setcount(a, cnt)
|
|
||||||
|
|
||||||
// make sure the array can store cap elements without reallocating
|
|
||||||
// logical count remains unchanged
|
|
||||||
#define da_reserve(a, cap) \
|
|
||||||
dg_dynarr_reserve(a, cap)
|
|
||||||
|
|
||||||
// this makes sure a only uses as much memory as for its elements
|
|
||||||
// => maybe useful if a used to contain a huge amount of elements,
|
|
||||||
// but you deleted most of them and want to free some memory
|
|
||||||
// Note however that this implies an allocation and copying the remaining
|
|
||||||
// elements, so only do this if it frees enough memory to be worthwhile!
|
|
||||||
#define da_shrink_to_fit(a) \
|
|
||||||
dg_dynarr_shrink_to_fit(a)
|
|
||||||
|
|
||||||
|
|
||||||
// removes and returns the last element of the array
|
|
||||||
#define da_pop(a) \
|
|
||||||
dg_dynarr_pop(a)
|
|
||||||
|
|
||||||
// returns the last element of the array
|
|
||||||
#define da_last(a) \
|
|
||||||
dg_dynarr_last(a)
|
|
||||||
|
|
||||||
// returns the pointer *to* the last element of the array
|
|
||||||
// (in contrast to dg_dynarr_end() which returns a pointer *after* the last element)
|
|
||||||
// returns NULL if array is empty
|
|
||||||
#define da_lastptr(a) \
|
|
||||||
dg_dynarr_lastptr(a)
|
|
||||||
|
|
||||||
// get element at index idx (like a.p[idx]), but with checks
|
|
||||||
// (unless you disabled them with #define DG_DYNARR_INDEX_CHECK_LEVEL 0)
|
|
||||||
#define da_get(a, idx) \
|
|
||||||
dg_dynarr_get(a,idx)
|
|
||||||
|
|
||||||
// get pointer to element at index idx (like &a.p[idx]), but with checks
|
|
||||||
// and it returns NULL if idx is invalid
|
|
||||||
#define da_getptr(a, idx) \
|
|
||||||
dg_dynarr_getptr(a, idx)
|
|
||||||
|
|
||||||
// returns a pointer to the first element of the array
|
|
||||||
// (together with dg_dynarr_end() you can do C++-style iterating)
|
|
||||||
#define da_begin(a) \
|
|
||||||
dg_dynarr_begin(a)
|
|
||||||
|
|
||||||
// returns a pointer to the past-the-end element of the array
|
|
||||||
// Allows C++-style iterating, in case you're into that kind of thing:
|
|
||||||
// for(T *it=da_begin(a), *end=da_end(a); it!=end; ++it) foo(*it);
|
|
||||||
// (see da_lastptr() to get a pointer *to* the last element)
|
|
||||||
#define da_end(a) \
|
|
||||||
dg_dynarr_end(a)
|
|
||||||
|
|
||||||
|
|
||||||
// returns (logical) number of elements currently in the array
|
|
||||||
#define da_count(a) \
|
|
||||||
dg_dynarr_count(a)
|
|
||||||
|
|
||||||
// get the current reserved capacity of the array
|
|
||||||
#define da_capacity(a) \
|
|
||||||
dg_dynarr_capacity(a)
|
|
||||||
|
|
||||||
// returns 1 if the array is empty, else 0
|
|
||||||
#define da_empty(a) \
|
|
||||||
dg_dynarr_empty(a)
|
|
||||||
|
|
||||||
// returns 1 if the last (re)allocation when inserting failed (Out Of Memory)
|
|
||||||
// or if the array has never allocated any memory yet, else 0
|
|
||||||
// deleting the contents when growing fails instead of keeping old may seem
|
|
||||||
// a bit uncool, but it's simple and OOM should rarely happen on modern systems
|
|
||||||
// anyway - after all you need to deplete both RAM and swap/pagefile.sys
|
|
||||||
#define da_oom(a) \
|
|
||||||
dg_dynarr_oom(a)
|
|
||||||
|
|
||||||
|
|
||||||
// sort a using the given qsort()-comparator cmp
|
|
||||||
// (just a slim wrapper around qsort())
|
|
||||||
#define da_sort(a, cmp) \
|
|
||||||
dg_dynarr_sort(a, cmp)
|
|
||||||
|
|
||||||
#endif // DG_DYNARR_NO_SHORTNAMES
|
|
||||||
|
|
||||||
|
|
||||||
// ######### Implementation of the actual macros (using the long names) ##########
|
|
||||||
|
|
||||||
// use like DG_DYNARR_TYPEDEF(int, MyIntArrType); MyIntArrType ia = {0}; dg_dynarr_push(ia, 42); ...
|
|
||||||
#define DG_DYNARR_TYPEDEF(TYPE, NewArrayTypeName) \
|
|
||||||
typedef struct { TYPE* p; dg__dynarr_md md; } NewArrayTypeName;
|
|
||||||
|
|
||||||
// makes sure the array is initialized and can be used.
|
|
||||||
// either do YourArray arr = {0}; or YourArray arr; dg_dynarr_init(arr);
|
|
||||||
#define dg_dynarr_init(a) \
|
|
||||||
dg__dynarr_init((void**)&(a).p, &(a).md, NULL, 0)
|
|
||||||
|
|
||||||
// this allows you to provide an external buffer that'll be used as long as it's big enough
|
|
||||||
// once you add more elements than buf can hold, fresh memory will be allocated on the heap
|
|
||||||
#define dg_dynarr_init_external(a, buf, buf_cap) \
|
|
||||||
dg__dynarr_init((void**)&(a).p, &(a).md, (buf), (buf_cap))
|
|
||||||
|
|
||||||
// use this to free the memory allocated by dg_dynarr
|
|
||||||
// Note: it is safe to add new elements to the array after dg_dynarr_free()
|
|
||||||
// it will allocate new memory, just like it would directly after dg_dynarr_init()
|
|
||||||
#define dg_dynarr_free(a) \
|
|
||||||
dg__dynarr_free((void**)&(a).p, &(a).md)
|
|
||||||
|
|
||||||
|
|
||||||
// add an element to the array (appended at the end)
|
|
||||||
#define dg_dynarr_push(a, v) \
|
|
||||||
(dg__dynarr_maybegrowadd(dg__dynarr_unp(a), 1) ? (((a).p[(a).md.cnt++] = (v)),0) : 0)
|
|
||||||
|
|
||||||
// add an element to the array (appended at the end)
|
|
||||||
// does the same as push, just for consistency with addn (like insert and insertn)
|
|
||||||
#define dg_dynarr_add(a, v) \
|
|
||||||
dg_dynarr_push((a), (v))
|
|
||||||
|
|
||||||
// append n elements to a and initialize them from array vals, doesn't return anything
|
|
||||||
// ! vals (and all other args) are evaluated multiple times !
|
|
||||||
#define dg_dynarr_addn(a, vals, n) do { \
|
|
||||||
DG_DYNARR_ASSERT((vals)!=NULL, "Don't pass NULL als vals to dg_dynarr_addn!"); \
|
|
||||||
if((vals)!=NULL && dg__dynarr_add(dg__dynarr_unp(a), n, 0)) { \
|
|
||||||
size_t i_=(a).md.cnt-(n), v_=0; \
|
|
||||||
while(i_<(a).md.cnt) (a).p[i_++]=(vals)[v_++]; \
|
|
||||||
} } DG__DYNARR_WHILE0
|
|
||||||
|
|
||||||
// add n elements to the end of the array and zeroe them with memset()
|
|
||||||
// returns pointer to first added element, NULL if out of memory (array is empty then)
|
|
||||||
#define dg_dynarr_addn_zeroed(a, n) \
|
|
||||||
(dg__dynarr_add(dg__dynarr_unp(a), (n), 1) ? &(a).p[(a).md.cnt-(size_t)(n)] : NULL)
|
|
||||||
|
|
||||||
// add n elements to the end of the array, which are uninitialized
|
|
||||||
// returns pointer to first added element, NULL if out of memory (array is empty then)
|
|
||||||
#define dg_dynarr_addn_uninit(a, n) \
|
|
||||||
(dg__dynarr_add(dg__dynarr_unp(a), (n), 0) ? &(a).p[(a).md.cnt-(size_t)(n)] : NULL)
|
|
||||||
|
|
||||||
// insert a single value v at index idx
|
|
||||||
#define dg_dynarr_insert(a, idx, v) \
|
|
||||||
(dg__dynarr_checkidxle((a),(idx)), \
|
|
||||||
dg__dynarr_insert(dg__dynarr_unp(a), (idx), 1, 0), \
|
|
||||||
(a).p[dg__dynarr_idx((a).md, (idx))] = (v))
|
|
||||||
|
|
||||||
// insert n elements into a at idx, initialize them from array vals
|
|
||||||
// doesn't return anything
|
|
||||||
// ! vals (and all other args) is evaluated multiple times !
|
|
||||||
#define dg_dynarr_insertn(a, idx, vals, n) do { \
|
|
||||||
DG_DYNARR_ASSERT((vals)!=NULL, "Don't pass NULL as vals to dg_dynarr_insertn!"); \
|
|
||||||
dg__dynarr_checkidxle((a),(idx)); \
|
|
||||||
if((vals)!=NULL && dg__dynarr_insert(dg__dynarr_unp(a), (idx), (n), 0)){ \
|
|
||||||
size_t i_=(idx), v_=0, e_=(idx)+(n); \
|
|
||||||
while(i_ < e_) (a).p[i_++] = (vals)[v_++]; \
|
|
||||||
}} DG__DYNARR_WHILE0
|
|
||||||
|
|
||||||
// insert n elements into a at idx and zeroe them with memset()
|
|
||||||
// returns pointer to first inserted element or NULL if out of memory
|
|
||||||
#define dg_dynarr_insertn_zeroed(a, idx, n) \
|
|
||||||
(dg__dynarr_checkidxle((a),(idx)), \
|
|
||||||
dg__dynarr_insert(dg__dynarr_unp(a), (idx), (n), 1) \
|
|
||||||
? &(a).p[dg__dynarr_idx((a).md, (idx))] : NULL)
|
|
||||||
|
|
||||||
// insert n uninitialized elements into a at idx;
|
|
||||||
// returns pointer to first inserted element or NULL if out of memory
|
|
||||||
#define dg_dynarr_insertn_uninit(a, idx, n) \
|
|
||||||
(dg__dynarr_checkidxle((a),(idx)), \
|
|
||||||
dg__dynarr_insert(dg__dynarr_unp(a), idx, n, 0) \
|
|
||||||
? &(a).p[dg__dynarr_idx((a).md, (idx))] : NULL)
|
|
||||||
|
|
||||||
// set a single value v at index idx - like "a.p[idx] = v;" but with checks (unless disabled)
|
|
||||||
#define dg_dynarr_set(a, idx, v) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), \
|
|
||||||
(a).p[dg__dynarr_idx((a).md, (idx))] = (v))
|
|
||||||
|
|
||||||
// overwrite n elements of a, starting at idx, with values from array vals
|
|
||||||
// doesn't return anything
|
|
||||||
// ! vals (and all other args) is evaluated multiple times !
|
|
||||||
#define dg_dynarr_setn(a, idx, vals, n) do { \
|
|
||||||
DG_DYNARR_ASSERT((vals)!=NULL, "Don't pass NULL as vals to dg_dynarr_setn!"); \
|
|
||||||
size_t idx_=(idx); size_t end_=idx_+(size_t)n; \
|
|
||||||
dg__dynarr_checkidx((a),idx_); dg__dynarr_checkidx((a),end_-1); \
|
|
||||||
if((vals)!=NULL && idx_ < (a).md.cnt && end_ <= (a).md.cnt) { \
|
|
||||||
size_t v_=0; \
|
|
||||||
while(idx_ < end_) (a).p[idx_++] = (vals)[v_++]; \
|
|
||||||
}} DG__DYNARR_WHILE0
|
|
||||||
|
|
||||||
|
|
||||||
// delete the element at idx, moving all following elements (=> keeps order)
|
|
||||||
#define dg_dynarr_delete(a, idx) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), dg__dynarr_delete(dg__dynarr_unp(a), (idx), 1))
|
|
||||||
|
|
||||||
// delete n elements starting at idx, moving all following elements (=> keeps order)
|
|
||||||
#define dg_dynarr_deleten(a, idx, n) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), dg__dynarr_delete(dg__dynarr_unp(a), (idx), (n)))
|
|
||||||
// TODO: check whether idx+n < count?
|
|
||||||
|
|
||||||
// delete the element at idx, move the last element there (=> doesn't keep order)
|
|
||||||
#define dg_dynarr_deletefast(a, idx) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), dg__dynarr_deletefast(dg__dynarr_unp(a), (idx), 1))
|
|
||||||
|
|
||||||
// delete n elements starting at idx, move the last n elements there (=> doesn't keep order)
|
|
||||||
#define dg_dynarr_deletenfast(a, idx, n) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), dg__dynarr_deletefast(dg__dynarr_unp(a), idx, n))
|
|
||||||
// TODO: check whether idx+n < count?
|
|
||||||
|
|
||||||
// removes all elements from the array, but does not free the buffer
|
|
||||||
// (if you want to free the buffer too, just use dg_dynarr_free())
|
|
||||||
#define dg_dynarr_clear(a) \
|
|
||||||
((a).md.cnt=0)
|
|
||||||
|
|
||||||
// sets the logical number of elements in the array
|
|
||||||
// if cnt > dg_dynarr_count(a), the logical count will be increased accordingly
|
|
||||||
// and the new elements will be uninitialized
|
|
||||||
#define dg_dynarr_setcount(a, n) \
|
|
||||||
(dg__dynarr_maybegrow(dg__dynarr_unp(a), (n)) ? ((a).md.cnt = (n)) : 0)
|
|
||||||
|
|
||||||
// make sure the array can store cap elements without reallocating
|
|
||||||
// logical count remains unchanged
|
|
||||||
#define dg_dynarr_reserve(a, cap) \
|
|
||||||
dg__dynarr_maybegrow(dg__dynarr_unp(a), (cap))
|
|
||||||
|
|
||||||
// this makes sure a only uses as much memory as for its elements
|
|
||||||
// => maybe useful if a used to contain a huge amount of elements,
|
|
||||||
// but you deleted most of them and want to free some memory
|
|
||||||
// Note however that this implies an allocation and copying the remaining
|
|
||||||
// elements, so only do this if it frees enough memory to be worthwhile!
|
|
||||||
#define dg_dynarr_shrink_to_fit(a) \
|
|
||||||
dg__dynarr_shrink_to_fit(dg__dynarr_unp(a))
|
|
||||||
|
|
||||||
|
|
||||||
#if (DG_DYNARR_INDEX_CHECK_LEVEL == 1) || (DG_DYNARR_INDEX_CHECK_LEVEL == 3)
|
|
||||||
|
|
||||||
// removes and returns the last element of the array
|
|
||||||
#define dg_dynarr_pop(a) \
|
|
||||||
(dg__dynarr_check_notempty((a), "Don't pop an empty array!"), \
|
|
||||||
(a).p[((a).md.cnt > 0) ? (--(a).md.cnt) : 0])
|
|
||||||
|
|
||||||
// returns the last element of the array
|
|
||||||
#define dg_dynarr_last(a) \
|
|
||||||
(dg__dynarr_check_notempty((a), "Don't call da_last() on an empty array!"), \
|
|
||||||
(a).p[((a).md.cnt > 0) ? ((a).md.cnt-1) : 0])
|
|
||||||
|
|
||||||
#elif (DG_DYNARR_INDEX_CHECK_LEVEL == 0) || (DG_DYNARR_INDEX_CHECK_LEVEL == 2)
|
|
||||||
|
|
||||||
// removes and returns the last element of the array
|
|
||||||
#define dg_dynarr_pop(a) \
|
|
||||||
(dg__dynarr_check_notempty((a), "Don't pop an empty array!"), \
|
|
||||||
(a).p[--(a).md.cnt])
|
|
||||||
|
|
||||||
// returns the last element of the array
|
|
||||||
#define dg_dynarr_last(a) \
|
|
||||||
(dg__dynarr_check_notempty((a), "Don't call da_last() on an empty array!"), \
|
|
||||||
(a).p[(a).md.cnt-1])
|
|
||||||
|
|
||||||
#else // invalid DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
#error Invalid index check level DG_DYNARR_INDEX_CHECK_LEVEL (must be 0-3) !
|
|
||||||
#endif // DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
|
|
||||||
// returns the pointer *to* the last element of the array
|
|
||||||
// (in contrast to dg_dynarr_end() which returns a pointer *after* the last element)
|
|
||||||
// returns NULL if array is empty
|
|
||||||
#define dg_dynarr_lastptr(a) \
|
|
||||||
(((a).md.cnt > 0) ? ((a).p + (a).md.cnt - 1) : NULL)
|
|
||||||
|
|
||||||
// get element at index idx (like a.p[idx]), but with checks
|
|
||||||
// (unless you disabled them with #define DG_DYNARR_INDEX_CHECK_LEVEL 0)
|
|
||||||
#define dg_dynarr_get(a, idx) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), (a).p[dg__dynarr_idx((a).md, (idx))])
|
|
||||||
|
|
||||||
// get pointer to element at index idx (like &a.p[idx]), but with checks
|
|
||||||
// (unless you disabled them with #define DG_DYNARR_INDEX_CHECK_LEVEL 0)
|
|
||||||
// if index-checks are disabled, it returns NULL on invalid index (else it asserts() before returning)
|
|
||||||
#define dg_dynarr_getptr(a, idx) \
|
|
||||||
(dg__dynarr_checkidx((a),(idx)), \
|
|
||||||
((size_t)(idx) < (a).md.cnt) ? ((a).p+(size_t)(idx)) : NULL)
|
|
||||||
|
|
||||||
// returns a pointer to the first element of the array
|
|
||||||
// (together with dg_dynarr_end() you can do C++-style iterating)
|
|
||||||
#define dg_dynarr_begin(a) \
|
|
||||||
((a).p)
|
|
||||||
|
|
||||||
// returns a pointer to the past-the-end element of the array
|
|
||||||
// Allows C++-style iterating, in case you're into that kind of thing:
|
|
||||||
// for(T *it=dg_dynarr_begin(a), *end=dg_dynarr_end(a); it!=end; ++it) foo(*it);
|
|
||||||
// (see dg_dynarr_lastptr() to get a pointer *to* the last element)
|
|
||||||
#define dg_dynarr_end(a) \
|
|
||||||
((a).p + (a).md.cnt)
|
|
||||||
|
|
||||||
|
|
||||||
// returns (logical) number of elements currently in the array
|
|
||||||
#define dg_dynarr_count(a) \
|
|
||||||
((a).md.cnt)
|
|
||||||
|
|
||||||
// get the current reserved capacity of the array
|
|
||||||
#define dg_dynarr_capacity(a) \
|
|
||||||
((a).md.cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB)
|
|
||||||
|
|
||||||
// returns 1 if the array is empty, else 0
|
|
||||||
#define dg_dynarr_empty(a) \
|
|
||||||
((a).md.cnt == 0)
|
|
||||||
|
|
||||||
// returns 1 if the last (re)allocation when inserting failed (Out Of Memory)
|
|
||||||
// or if the array has never allocated any memory yet, else 0
|
|
||||||
// deleting the contents when growing fails instead of keeping old may seem
|
|
||||||
// a bit uncool, but it's simple and OOM should rarely happen on modern systems
|
|
||||||
// anyway - after all you need to deplete both RAM and swap/pagefile.sys
|
|
||||||
// or deplete the address space, which /might/ happen with 32bit applications
|
|
||||||
// but probably not with 64bit (at least in the foreseeable future)
|
|
||||||
#define dg_dynarr_oom(a) \
|
|
||||||
((a).md.cap == 0)
|
|
||||||
|
|
||||||
|
|
||||||
// sort a using the given qsort()-comparator cmp
|
|
||||||
// (just a slim wrapper around qsort())
|
|
||||||
#define dg_dynarr_sort(a, cmp) \
|
|
||||||
qsort((a).p, (a).md.cnt, sizeof((a).p[0]), (cmp))
|
|
||||||
|
|
||||||
|
|
||||||
// ######### Implementation-Details that are not part of the API ##########
|
|
||||||
|
|
||||||
#include <stdlib.h> // size_t, malloc(), free(), realloc()
|
|
||||||
#include <string.h> // memset(), memcpy(), memmove()
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif
|
|
||||||
|
|
||||||
typedef struct {
|
|
||||||
size_t cnt; // logical number of elements
|
|
||||||
size_t cap; // cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB is actual capacity (in elements, *not* bytes!)
|
|
||||||
// if(cap & DG__DYNARR_SIZE_T_MSB) the current memory is not allocated by dg_dynarr,
|
|
||||||
// but was set with dg_dynarr_init_external()
|
|
||||||
// that's handy to give an array a base-element storage on the stack, for example
|
|
||||||
// TODO: alternatively, we could introduce a flag field to this struct and use that,
|
|
||||||
// so we don't have to calculate & everytime cap is needed
|
|
||||||
} dg__dynarr_md;
|
|
||||||
|
|
||||||
// I used to have the following in an enum, but MSVC assumes enums are always 32bit ints
|
|
||||||
static const size_t DG__DYNARR_SIZE_T_MSB = ((size_t)1) << (sizeof(size_t)*8 - 1);
|
|
||||||
static const size_t DG__DYNARR_SIZE_T_ALL_BUT_MSB = (((size_t)1) << (sizeof(size_t)*8 - 1))-1;
|
|
||||||
|
|
||||||
// "unpack" the elements of an array struct for use with helper functions
|
|
||||||
// (to void** arr, dg__dynarr_md* md, size_t itemsize)
|
|
||||||
#define dg__dynarr_unp(a) \
|
|
||||||
(void**)&(a).p, &(a).md, sizeof((a).p[0])
|
|
||||||
|
|
||||||
// MSVC warns about "conditional expression is constant" when using the
|
|
||||||
// do { ... } while(0) idiom in macros..
|
|
||||||
#ifdef _MSC_VER
|
|
||||||
#if _MSC_VER >= 1400 // MSVC 2005 and newer
|
|
||||||
// people claim MSVC 2005 and newer support __pragma, even though it's only documented
|
|
||||||
// for 2008+ (https://msdn.microsoft.com/en-us/library/d9x1s805%28v=vs.90%29.aspx)
|
|
||||||
// the following workaround is based on
|
|
||||||
// http://cnicholson.net/2009/03/stupid-c-tricks-dowhile0-and-c4127/
|
|
||||||
#define DG__DYNARR_WHILE0 \
|
|
||||||
__pragma(warning(push)) \
|
|
||||||
__pragma(warning(disable:4127)) \
|
|
||||||
while(0) \
|
|
||||||
__pragma(warning(pop))
|
|
||||||
#else // older MSVC versions don't support __pragma - I heard this helps for them
|
|
||||||
#define DG__DYNARR_WHILE0 while(0,0)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#else // other compilers
|
|
||||||
|
|
||||||
#define DG__DYNARR_WHILE0 while(0)
|
|
||||||
|
|
||||||
#endif // _MSC_VER
|
|
||||||
|
|
||||||
|
|
||||||
#if (DG_DYNARR_INDEX_CHECK_LEVEL == 2) || (DG_DYNARR_INDEX_CHECK_LEVEL == 3)
|
|
||||||
|
|
||||||
#define dg__dynarr_checkidx(a,i) \
|
|
||||||
DG_DYNARR_ASSERT((size_t)i < a.md.cnt, "index out of bounds!")
|
|
||||||
|
|
||||||
// special case for insert operations: == cnt is also ok, insert will append then
|
|
||||||
#define dg__dynarr_checkidxle(a,i) \
|
|
||||||
DG_DYNARR_ASSERT((size_t)i <= a.md.cnt, "index out of bounds!")
|
|
||||||
|
|
||||||
#define dg__dynarr_check_notempty(a, msg) \
|
|
||||||
DG_DYNARR_ASSERT(a.md.cnt > 0, msg)
|
|
||||||
|
|
||||||
#elif (DG_DYNARR_INDEX_CHECK_LEVEL == 0) || (DG_DYNARR_INDEX_CHECK_LEVEL == 1)
|
|
||||||
|
|
||||||
// no assertions that check if index is valid
|
|
||||||
#define dg__dynarr_checkidx(a,i) (void)0
|
|
||||||
#define dg__dynarr_checkidxle(a,i) (void)0
|
|
||||||
|
|
||||||
#define dg__dynarr_check_notempty(a, msg) (void)0
|
|
||||||
|
|
||||||
#else // invalid DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
#error Invalid index check level DG_DYNARR_INDEX_CHECK_LEVEL (must be 0-3) !
|
|
||||||
#endif // DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
|
|
||||||
|
|
||||||
#if (DG_DYNARR_INDEX_CHECK_LEVEL == 1) || (DG_DYNARR_INDEX_CHECK_LEVEL == 3)
|
|
||||||
|
|
||||||
// the given index, if valid, else 0
|
|
||||||
#define dg__dynarr_idx(md,i) \
|
|
||||||
(((size_t)(i) < md.cnt) ? (size_t)(i) : 0)
|
|
||||||
|
|
||||||
#elif (DG_DYNARR_INDEX_CHECK_LEVEL == 0) || (DG_DYNARR_INDEX_CHECK_LEVEL == 2)
|
|
||||||
|
|
||||||
// don't check and default to 0 if invalid, but just use the given value
|
|
||||||
#define dg__dynarr_idx(md,i) (size_t)(i)
|
|
||||||
|
|
||||||
#else // invalid DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
#error Invalid index check level DG_DYNARR_INDEX_CHECK_LEVEL (must be 0-3) !
|
|
||||||
#endif // DG_DYNARR_INDEX_CHECK_LEVEL
|
|
||||||
|
|
||||||
// the functions allocating/freeing memory are not implemented inline, but
|
|
||||||
// in the #ifdef DG_DYNARR_IMPLEMENTATION section
|
|
||||||
// one reason is that dg__dynarr_grow has the most code in it, the other is
|
|
||||||
// that windows has weird per-dll heaps so free() or realloc() should be
|
|
||||||
// called from code in the same dll that allocated the memory - these kind
|
|
||||||
// of wrapper functions that end up compiled into the exe or *one* dll
|
|
||||||
// (instead of inline functions compiled into everything) should ensure that.
|
|
||||||
|
|
||||||
DG_DYNARR_DEF void
|
|
||||||
dg__dynarr_free(void** p, dg__dynarr_md* md);
|
|
||||||
|
|
||||||
DG_DYNARR_DEF void
|
|
||||||
dg__dynarr_shrink_to_fit(void** arr, dg__dynarr_md* md, size_t itemsize);
|
|
||||||
|
|
||||||
// grow array to have enough space for at least min_needed elements
|
|
||||||
// if it fails (OOM), the array will be deleted, a.p will be NULL, a.md.cap and a.md.cnt will be 0
|
|
||||||
// and the functions returns 0; else (on success) it returns 1
|
|
||||||
DG_DYNARR_DEF int
|
|
||||||
dg__dynarr_grow(void** arr, dg__dynarr_md* md, size_t itemsize, size_t min_needed);
|
|
||||||
|
|
||||||
|
|
||||||
// the following functions are implemented inline, because they're quite short
|
|
||||||
// and mosty implemented in functions so the macros don't get too ugly
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE void
|
|
||||||
dg__dynarr_init(void** p, dg__dynarr_md* md, void* buf, size_t buf_cap)
|
|
||||||
{
|
|
||||||
*p = buf;
|
|
||||||
md->cnt = 0;
|
|
||||||
if(buf == NULL) md->cap = 0;
|
|
||||||
else md->cap = (DG__DYNARR_SIZE_T_MSB | buf_cap);
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE int
|
|
||||||
dg__dynarr_maybegrow(void** arr, dg__dynarr_md* md, size_t itemsize, size_t min_needed)
|
|
||||||
{
|
|
||||||
if((md->cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB) >= min_needed) return 1;
|
|
||||||
else return dg__dynarr_grow(arr, md, itemsize, min_needed);
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE int
|
|
||||||
dg__dynarr_maybegrowadd(void** arr, dg__dynarr_md* md, size_t itemsize, size_t num_add)
|
|
||||||
{
|
|
||||||
size_t min_needed = md->cnt+num_add;
|
|
||||||
if((md->cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB) >= min_needed) return 1;
|
|
||||||
else return dg__dynarr_grow(arr, md, itemsize, min_needed);
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE int
|
|
||||||
dg__dynarr_insert(void** arr, dg__dynarr_md* md, size_t itemsize, size_t idx, size_t n, int init0)
|
|
||||||
{
|
|
||||||
// allow idx == md->cnt to append
|
|
||||||
size_t oldCount = md->cnt;
|
|
||||||
size_t newCount = oldCount+n;
|
|
||||||
if(idx <= oldCount && dg__dynarr_maybegrow(arr, md, itemsize, newCount))
|
|
||||||
{
|
|
||||||
unsigned char* p = (unsigned char*)*arr; // *arr might have changed in dg__dynarr_grow()!
|
|
||||||
// move all existing items after a[idx] to a[idx+n]
|
|
||||||
if(idx < oldCount) memmove(p+(idx+n)*itemsize, p+idx*itemsize, itemsize*(oldCount - idx));
|
|
||||||
|
|
||||||
// if the memory is supposed to be zeroed, do that
|
|
||||||
if(init0) memset(p+idx*itemsize, 0, n*itemsize);
|
|
||||||
|
|
||||||
md->cnt = newCount;
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE int
|
|
||||||
dg__dynarr_add(void** arr, dg__dynarr_md* md, size_t itemsize, size_t n, int init0)
|
|
||||||
{
|
|
||||||
size_t cnt = md->cnt;
|
|
||||||
if(dg__dynarr_maybegrow(arr, md, itemsize, cnt+n))
|
|
||||||
{
|
|
||||||
unsigned char* p = (unsigned char*)*arr; // *arr might have changed in dg__dynarr_grow()!
|
|
||||||
// if the memory is supposed to be zeroed, do that
|
|
||||||
if(init0) memset(p+cnt*itemsize, 0, n*itemsize);
|
|
||||||
|
|
||||||
md->cnt += n;
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE void
|
|
||||||
dg__dynarr_delete(void** arr, dg__dynarr_md* md, size_t itemsize, size_t idx, size_t n)
|
|
||||||
{
|
|
||||||
size_t cnt = md->cnt;
|
|
||||||
if(idx < cnt)
|
|
||||||
{
|
|
||||||
if(idx+n >= cnt) md->cnt = idx; // removing last element(s) => just reduce count
|
|
||||||
else
|
|
||||||
{
|
|
||||||
unsigned char* p = (unsigned char*)*arr;
|
|
||||||
// move all items following a[idx+n] to a[idx]
|
|
||||||
memmove(p+itemsize*idx, p+itemsize*(idx+n), itemsize*(cnt - (idx+n)));
|
|
||||||
md->cnt -= n;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_INLINE void
|
|
||||||
dg__dynarr_deletefast(void** arr, dg__dynarr_md* md, size_t itemsize, size_t idx, size_t n)
|
|
||||||
{
|
|
||||||
size_t cnt = md->cnt;
|
|
||||||
if(idx < cnt)
|
|
||||||
{
|
|
||||||
if(idx+n >= cnt) md->cnt = idx; // removing last element(s) => just reduce count
|
|
||||||
else
|
|
||||||
{
|
|
||||||
unsigned char* p = (unsigned char*)*arr;
|
|
||||||
// copy the last n items to a[idx] - but handle the case that
|
|
||||||
// the array has less than n elements left after the deleted elements
|
|
||||||
size_t numItemsAfterDeleted = cnt - (idx+n);
|
|
||||||
size_t m = (n < numItemsAfterDeleted) ? n : numItemsAfterDeleted;
|
|
||||||
memcpy(p+itemsize*idx, p+itemsize*(cnt - m), itemsize*m);
|
|
||||||
md->cnt -= n;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
} // extern "C"
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif // DG__DYNARR_H
|
|
||||||
|
|
||||||
|
|
||||||
// ############## Implementation of non-inline functions ##############
|
|
||||||
|
|
||||||
#ifdef DG_DYNARR_IMPLEMENTATION
|
|
||||||
|
|
||||||
// by default, C's malloc(), realloc() and free() is used to allocate/free heap memory.
|
|
||||||
// you can #define DG_DYNARR_MALLOC, DG_DYNARR_REALLOC and DG_DYNARR_FREE
|
|
||||||
// to provide alternative implementations like Win32 Heap(Re)Alloc/HeapFree
|
|
||||||
//
|
|
||||||
#ifndef DG_DYNARR_MALLOC
|
|
||||||
#define DG_DYNARR_MALLOC(elemSize, numElems) malloc(elemSize*numElems)
|
|
||||||
|
|
||||||
// oldNumElems is not used here, but maybe you need it for your allocator
|
|
||||||
// to copy the old elements over
|
|
||||||
#define DG_DYNARR_REALLOC(ptr, elemSize, oldNumElems, newCapacity) \
|
|
||||||
realloc(ptr, elemSize*newCapacity);
|
|
||||||
|
|
||||||
#define DG_DYNARR_FREE(ptr) free(ptr)
|
|
||||||
#endif
|
|
||||||
|
|
||||||
// you can #define DG_DYNARR_OUT_OF_MEMORY to some code that will be executed
|
|
||||||
// if allocating memory fails
|
|
||||||
#ifndef DG_DYNARR_OUT_OF_MEMORY
|
|
||||||
#define DG_DYNARR_OUT_OF_MEMORY DG_DYNARR_ASSERT(0, "Out of Memory!");
|
|
||||||
#endif
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif
|
|
||||||
|
|
||||||
DG_DYNARR_DEF void
|
|
||||||
dg__dynarr_free(void** p, dg__dynarr_md* md)
|
|
||||||
{
|
|
||||||
// only free memory if it doesn't point to external memory
|
|
||||||
if(!(md->cap & DG__DYNARR_SIZE_T_MSB))
|
|
||||||
{
|
|
||||||
DG_DYNARR_FREE(*p);
|
|
||||||
*p = NULL;
|
|
||||||
md->cap = 0;
|
|
||||||
}
|
|
||||||
md->cnt = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
DG_DYNARR_DEF int
|
|
||||||
dg__dynarr_grow(void** arr, dg__dynarr_md* md, size_t itemsize, size_t min_needed)
|
|
||||||
{
|
|
||||||
size_t cap = md->cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB;
|
|
||||||
|
|
||||||
DG_DYNARR_ASSERT(min_needed > cap, "dg__dynarr_grow() should only be called if storage actually needs to grow!");
|
|
||||||
|
|
||||||
if(min_needed < DG__DYNARR_SIZE_T_MSB)
|
|
||||||
{
|
|
||||||
size_t newcap = (cap > 4) ? (2*cap) : 8; // allocate for at least 8 elements
|
|
||||||
// make sure not to set DG__DYNARR_SIZE_T_MSB (unlikely anyway)
|
|
||||||
if(newcap >= DG__DYNARR_SIZE_T_MSB) newcap = DG__DYNARR_SIZE_T_MSB-1;
|
|
||||||
if(min_needed > newcap) newcap = min_needed;
|
|
||||||
|
|
||||||
// the memory was allocated externally, don't free it, just copy contents
|
|
||||||
if(md->cap & DG__DYNARR_SIZE_T_MSB)
|
|
||||||
{
|
|
||||||
void* p = DG_DYNARR_MALLOC(itemsize, newcap);
|
|
||||||
if(p != NULL) memcpy(p, *arr, itemsize*md->cnt);
|
|
||||||
*arr = p;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
void* p = DG_DYNARR_REALLOC(*arr, itemsize, md->cnt, newcap);
|
|
||||||
if(p == NULL) DG_DYNARR_FREE(*arr); // realloc failed, at least don't leak memory
|
|
||||||
*arr = p;
|
|
||||||
}
|
|
||||||
|
|
||||||
// TODO: handle OOM by setting highest bit of count and keeping old data?
|
|
||||||
|
|
||||||
if(*arr) md->cap = newcap;
|
|
||||||
else
|
|
||||||
{
|
|
||||||
md->cap = 0;
|
|
||||||
md->cnt = 0;
|
|
||||||
|
|
||||||
DG_DYNARR_OUT_OF_MEMORY ;
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
DG_DYNARR_ASSERT(min_needed < DG__DYNARR_SIZE_T_MSB, "Arrays must stay below SIZE_T_MAX/2 elements!");
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
DG_DYNARR_DEF void
|
|
||||||
dg__dynarr_shrink_to_fit(void** arr, dg__dynarr_md* md, size_t itemsize)
|
|
||||||
{
|
|
||||||
// only do this if we allocated the memory ourselves
|
|
||||||
if(!(md->cap & DG__DYNARR_SIZE_T_MSB))
|
|
||||||
{
|
|
||||||
size_t cnt = md->cnt;
|
|
||||||
if(cnt == 0) dg__dynarr_free(arr, md);
|
|
||||||
else if((md->cap & DG__DYNARR_SIZE_T_ALL_BUT_MSB) > cnt)
|
|
||||||
{
|
|
||||||
void* p = DG_DYNARR_MALLOC(itemsize, cnt);
|
|
||||||
if(p != NULL)
|
|
||||||
{
|
|
||||||
memcpy(p, *arr, cnt*itemsize);
|
|
||||||
md->cap = cnt;
|
|
||||||
DG_DYNARR_FREE(*arr);
|
|
||||||
*arr = p;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
} // extern "C"
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif // DG_DYNARR_IMPLEMENTATION
|
|
||||||
File diff suppressed because it is too large
Load diff
|
|
@ -56,7 +56,7 @@
|
||||||
|
|
||||||
#include "../../ref_shared.h"
|
#include "../../ref_shared.h"
|
||||||
|
|
||||||
#include "HandmadeMath.h"
|
#include "../../files/HandmadeMath.h"
|
||||||
|
|
||||||
#if 0 // only use this for development ..
|
#if 0 // only use this for development ..
|
||||||
#define STUB_ONCE(msg) do { \
|
#define STUB_ONCE(msg) do { \
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue