Init new repository

src/compiler/unix_arena.c

@@ -0,0 +1,30 @@
+#define LC_V_UNIX_PAGE_SIZE 4096
+
+LC_FUNCTION LC_VMemory LC_VReserve(size_t size) {
+    LC_VMemory result       = {};
+    size_t     size_aligned = LC_AlignUp(size, LC_V_UNIX_PAGE_SIZE);
+    result.data             = (uint8_t *)mmap(0, size_aligned, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+    LC_Assertf(result.data, "Failed to reserve memory using mmap!!");
+    if (result.data) {
+        result.reserve = size_aligned;
+    }
+    return result;
+}
+
+LC_FUNCTION bool LC_VCommit(LC_VMemory *m, size_t commit) {
+    uint8_t *pointer = LC_V_AdvanceCommit(m, &commit, LC_V_UNIX_PAGE_SIZE);
+    if (pointer) {
+        int mprotect_result = mprotect(pointer, commit, PROT_READ | PROT_WRITE);
+        LC_Assertf(mprotect_result == 0, "Failed to commit more memory using mmap");
+        if (mprotect_result == 0) {
+            m->commit += commit;
+            return true;
+        }
+    }
+    return false;
+}
+
+LC_FUNCTION void LC_VDeallocate(LC_VMemory *m) {
+    int result = munmap(m->data, m->reserve);
+    LC_Assertf(result == 0, "Failed to release virtual memory using munmap");
+}