From 70e6daf2dd47ab20957cf3c7129d4f61c606c8b9 Mon Sep 17 00:00:00 2001
From: Allen Webster <yoyo4thdimention@gmail.com>
Date: Fri, 13 Aug 2021 11:28:01 -0700
Subject: [PATCH] linux low level memory implementation (not tested on linux
 yet)

---
 source/md.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/source/md.c b/source/md.c
index fc91a8d..8f9811c 100644
--- a/source/md.c
+++ b/source/md.c
@@ -207,8 +207,28 @@ MD_LINUX_FileIterIncrement(MD_Arena *arena, MD_FileIter *opaque_it, MD_String8 p
 # define MD_IMPL_Release MD_LINUX_Release
 #endif
 
-// TODO(allen): implement
-# error not implemented
+static void*
+MD_LINUX_Reserve(MD_u64 size){
+    void *result = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, (off_t)0);
+    return(result);
+}
+
+static void
+MD_LINUX_Commit(void *ptr, MD_u64 size){
+    mprotect(ptr, size, PROT_READ|PROT_WRITE);
+}
+
+static void
+MD_LINUX_Decommit(void *ptr, MD_u64 size){
+    mprotect(ptr, size, PROT_NONE);
+    madvise(ptr, size, MADV_DONTNEED);
+}
+
+static void
+MD_LINUX_Release(void *ptr, MD_u64 size){
+    munmap(ptr, size);
+}
+
 #endif
 
 //~/////////////////////////////////////////////////////////////////////////////