From 02adca46e37dc8446c0b041110dec53af9e1e2e9 Mon Sep 17 00:00:00 2001
From: Marcus Holland-Moritz <github@mhxnet.de>
Date: Sat, 24 May 2025 16:35:26 +0200
Subject: [PATCH] wip: apple memory usage

---
 src/util.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/util.cpp b/src/util.cpp
index a3342d4d..595eb1d1 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -64,6 +64,10 @@
 #endif
 #endif
 
+#ifdef __APPLE__
+#include <mach/mach.h>
+#endif
+
 #include <dwarfs/conv.h>
 #include <dwarfs/error.h>
 #include <dwarfs/util.h>
@@ -576,7 +580,13 @@ std::optional<size_t> get_self_memory_usage() {
 #if defined(_WIN32)
   // TODO
 #elif defined(__APPLE__)
-  // TODO
+  mach_task_vm_info info{};
+  mach_msg_type_number_t count = TASK_VM_INFO_COUNT;
+
+  if (task_info(mach_task_self(), TASK_VM_INFO,
+                reinterpret_cast<task_info_t>(&info), &count) == KERN_SUCCESS) {
+    return info.phys_footprint;
+  }
 #elif defined(__linux__)
   static constexpr auto kSmapsPath{"/proc/self/smaps_rollup"};
   std::ifstream smaps(kSmapsPath);