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reserve-commit-chain arenas

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This commit is contained in:
Allen Webster
2021-09-17 18:07:38 -07:00
parent cbd755852d
commit 0a07520fac
11 changed files with 181 additions and 72 deletions
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source/md.h
+8 -4
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@@ -24,13 +24,13 @@
**
** "low level memory" ** OPTIONAL (required for default arena)
** #define MD_IMPL_Reserve (MD_u64) -> void*
** #define MD_IMPL_Commit (void*, MD_u64) -> void
** #define MD_IMPL_Commit (void*, MD_u64) -> MD_b32
** #define MD_IMPL_Decommit (void*, MD_u64) -> void
** #define MD_IMPL_Release (void*, MD_u64) -> void
**
** "arena" ** REQUIRED (default implementation available)
** #define MD_IMPL_Arena <type>
** #define MD_IMPL_ArenaAlloc (MD_u64) -> MD_IMPL_Arena*
** #define MD_IMPL_ArenaAlloc () -> MD_IMPL_Arena*
** #define MD_IMPL_ArenaRelease (MD_IMPL_Arena*) -> void
** #define MD_IMPL_ArenaGetPos (MD_IMPL_Arena*) -> MD_u64
** #define MD_IMPL_ArenaPush (MD_IMPL_Arena*, MD_u64) -> void*
@@ -41,7 +41,6 @@
** "scratch" ** REQUIRED (default implementation available)
** #define MD_IMPL_GetScratch (MD_IMPL_Arena**, MD_u64) -> MD_IMPL_Arena*
** "scratch constants" ** OPTIONAL (required for default scratch)
** #define MD_IMPL_ScratchSize MD_u64 / default 1 gigabyte
** #define MD_IMPL_ScratchCount MD_u64 / default 2
**
** Default Implementation Controls
@@ -332,6 +331,8 @@
#define MD_ClampBot(a,b) MD_Max(a,b)
#define MD_ClampTop(a,b) MD_Min(a,b)
#define MD_AlignPow2(x,b) (((x)+((b)-1))&(~((b)-1)))
//~ Linked List Macros.
// terminator modes
@@ -416,6 +417,9 @@ typedef double MD_f64;
typedef struct MD_ArenaDefault MD_ArenaDefault;
struct MD_ArenaDefault{
MD_ArenaDefault *prev;
MD_ArenaDefault *current;
MD_u64 base_pos;
MD_u64 pos;
MD_u64 cmt;
MD_u64 cap;
@@ -881,7 +885,7 @@ struct MD_FileIter
//~ Arena
MD_FUNCTION MD_Arena* MD_ArenaAlloc(MD_u64 cap);
MD_FUNCTION MD_Arena* MD_ArenaAlloc(void);
MD_FUNCTION void MD_ArenaRelease(MD_Arena *arena);
MD_FUNCTION void* MD_ArenaPush(MD_Arena *arena, MD_u64 size);