| 1 | /* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */ |
| 2 | /* If you are missing that file, acquire a complete release at teeworlds.com. */ |
| 3 | #ifndef GAME_ALLOC_H |
| 4 | #define GAME_ALLOC_H |
| 5 | |
| 6 | #include <base/system.h> |
| 7 | |
| 8 | #include <new> |
| 9 | |
| 10 | #ifndef __has_feature |
| 11 | #define __has_feature(x) 0 |
| 12 | #endif |
| 13 | #if __has_feature(address_sanitizer) |
| 14 | #include <sanitizer/asan_interface.h> |
| 15 | #else |
| 16 | #define ASAN_POISON_MEMORY_REGION(addr, size) \ |
| 17 | ((void)(addr), (void)(size)) |
| 18 | #define ASAN_UNPOISON_MEMORY_REGION(addr, size) \ |
| 19 | ((void)(addr), (void)(size)) |
| 20 | #endif |
| 21 | |
| 22 | #define MACRO_ALLOC_HEAP() \ |
| 23 | public: \ |
| 24 | void *operator new(size_t Size) \ |
| 25 | { \ |
| 26 | void *pObj = malloc(Size); \ |
| 27 | mem_zero(pObj, Size); \ |
| 28 | return pObj; \ |
| 29 | } \ |
| 30 | void operator delete(void *pPtr) \ |
| 31 | { \ |
| 32 | free(pPtr); \ |
| 33 | } \ |
| 34 | \ |
| 35 | private: |
| 36 | |
| 37 | #define MACRO_ALLOC_POOL_ID() \ |
| 38 | public: \ |
| 39 | void *operator new(size_t Size, int Id); \ |
| 40 | void operator delete(void *pObj, int Id); \ |
| 41 | void operator delete(void *pObj); /* NOLINT(misc-new-delete-overloads) */ \ |
| 42 | \ |
| 43 | private: |
| 44 | |
| 45 | #if __has_feature(address_sanitizer) |
| 46 | #define MACRO_ALLOC_GET_SIZE(POOLTYPE) ((sizeof(POOLTYPE) + 7) & ~7) |
| 47 | #else |
| 48 | #define MACRO_ALLOC_GET_SIZE(POOLTYPE) (sizeof(POOLTYPE)) |
| 49 | #endif |
| 50 | |
| 51 | #define MACRO_ALLOC_POOL_ID_IMPL(POOLTYPE, PoolSize) \ |
| 52 | static char gs_PoolData##POOLTYPE[PoolSize][MACRO_ALLOC_GET_SIZE(POOLTYPE)] = {{0}}; \ |
| 53 | static int gs_PoolUsed##POOLTYPE[PoolSize] = {0}; \ |
| 54 | [[maybe_unused]] static int gs_PoolDummy##POOLTYPE = (ASAN_POISON_MEMORY_REGION(gs_PoolData##POOLTYPE, sizeof(gs_PoolData##POOLTYPE)), 0); \ |
| 55 | void *POOLTYPE::operator new(size_t Size, int Id) \ |
| 56 | { \ |
| 57 | dbg_assert(sizeof(POOLTYPE) >= Size, "size error"); \ |
| 58 | dbg_assert(!gs_PoolUsed##POOLTYPE[Id], "already used"); \ |
| 59 | ASAN_UNPOISON_MEMORY_REGION(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 60 | gs_PoolUsed##POOLTYPE[Id] = 1; \ |
| 61 | mem_zero(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 62 | return gs_PoolData##POOLTYPE[Id]; \ |
| 63 | } \ |
| 64 | void POOLTYPE::operator delete(void *pObj, int Id) \ |
| 65 | { \ |
| 66 | dbg_assert(gs_PoolUsed##POOLTYPE[Id], "not used"); \ |
| 67 | dbg_assert(Id == (POOLTYPE *)pObj - (POOLTYPE *)gs_PoolData##POOLTYPE, "invalid id"); /* NOLINT(bugprone-pointer-arithmetic-on-polymorphic-object) */ \ |
| 68 | gs_PoolUsed##POOLTYPE[Id] = 0; \ |
| 69 | mem_zero(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 70 | ASAN_POISON_MEMORY_REGION(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 71 | } \ |
| 72 | void POOLTYPE::operator delete(void *pObj) /* NOLINT(misc-new-delete-overloads) */ \ |
| 73 | { \ |
| 74 | int Id = (POOLTYPE *)pObj - (POOLTYPE *)gs_PoolData##POOLTYPE; /* NOLINT(bugprone-pointer-arithmetic-on-polymorphic-object) */ \ |
| 75 | dbg_assert(gs_PoolUsed##POOLTYPE[Id], "not used"); \ |
| 76 | gs_PoolUsed##POOLTYPE[Id] = 0; \ |
| 77 | mem_zero(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 78 | ASAN_POISON_MEMORY_REGION(gs_PoolData##POOLTYPE[Id], sizeof(gs_PoolData##POOLTYPE[Id])); \ |
| 79 | } |
| 80 | |
| 81 | #endif |
| 82 | |