From c529770d38e28fb7fc594219a7a420674c5ebfcc Mon Sep 17 00:00:00 2001
From: XMRig <support@xmrig.com>
Date: Fri, 29 Nov 2019 13:12:36 +0700
Subject: [PATCH] Use uv_get_free_memory.

---
 src/Summary.cpp             | 7 +++++--
 src/base/api/Api.cpp        | 1 +
 src/crypto/rx/RxDataset.cpp | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/Summary.cpp b/src/Summary.cpp
index 4d295e44..6ad6819d 100644
--- a/src/Summary.cpp
+++ b/src/Summary.cpp
@@ -104,9 +104,12 @@ static void print_cpu(Config *)
 
 static void print_threads(Config *config)
 {
-    Log::print(GREEN_BOLD(" * ") WHITE_BOLD("%-13s") CYAN_BOLD("%.1f GB"),
+    constexpr size_t oneGiB = 1024U * 1024U * 1024U;
+
+    Log::print(GREEN_BOLD(" * ") WHITE_BOLD("%-13s") CYAN_BOLD("%.1f/%.1f GB"),
                "MEMORY",
-               static_cast<double>(uv_get_total_memory()) / (1024U * 1024U * 1024U)
+               static_cast<double>(uv_get_free_memory()) / oneGiB,
+               static_cast<double>(uv_get_total_memory()) / oneGiB
                );
 
     Log::print(GREEN_BOLD(" * ") WHITE_BOLD("%-13s") WHITE_BOLD("%s%d%%"),
diff --git a/src/base/api/Api.cpp b/src/base/api/Api.cpp
index 9bed34df..c66241c9 100644
--- a/src/base/api/Api.cpp
+++ b/src/base/api/Api.cpp
@@ -67,6 +67,7 @@ static rapidjson::Value getResources(rapidjson::Document &doc)
     Value memory(kObjectType);
     Value load_average(kArrayType);
 
+    memory.AddMember("free",                uv_get_free_memory(), allocator);
     memory.AddMember("total",               uv_get_total_memory(), allocator);
     memory.AddMember("resident_set_memory", static_cast<uint64_t>(rss), allocator);
 
diff --git a/src/crypto/rx/RxDataset.cpp b/src/crypto/rx/RxDataset.cpp
index ce41a58e..fb2ef9d1 100644
--- a/src/crypto/rx/RxDataset.cpp
+++ b/src/crypto/rx/RxDataset.cpp
@@ -167,7 +167,7 @@ void xmrig::RxDataset::allocate(bool hugePages)
         return;
     }
 
-    if (m_mode == RxConfig::AutoMode && uv_get_total_memory() < (maxSize() + RxCache::maxSize())) {
+    if (m_mode == RxConfig::AutoMode && uv_get_free_memory() < (maxSize() + RxCache::maxSize())) {
         LOG_ERR(CLEAR "%s" RED_BOLD_S "not enough memory for RandomX dataset", rx_tag());
 
         return;