Added initial memory pool support.

CMakeLists.txt

@@ -55,6 +55,7 @@ set(HEADERS
    )
 
 set(HEADERS_CRYPTO
+    src/backend/common/interfaces/IMemoryPool.h
     src/crypto/cn/asm/CryptonightR_template.h
     src/crypto/cn/c_blake256.h
     src/crypto/cn/c_groestl.h
@@ -73,6 +74,7 @@ set(HEADERS_CRYPTO
     src/crypto/common/Algorithm.h
     src/crypto/common/Coin.h
     src/crypto/common/keccak.h
+    src/crypto/common/MemoryPool.h
     src/crypto/common/Nonce.h
     src/crypto/common/portable/mm_malloc.h
     src/crypto/common/VirtualMemory.h
@@ -111,10 +113,17 @@ set(SOURCES_CRYPTO
     src/crypto/common/Algorithm.cpp
     src/crypto/common/Coin.cpp
     src/crypto/common/keccak.cpp
+    src/crypto/common/MemoryPool.cpp
     src/crypto/common/Nonce.cpp
     src/crypto/common/VirtualMemory.cpp
    )
 
+if (WITH_HWLOC)
+    list(APPEND SOURCES_CRYPTO
+         src/crypto/common/VirtualMemory_hwloc.cpp
+        )
+endif()
+
 if (WIN32)
     set(SOURCES_OS
         "${SOURCES_OS}"

cmake/randomx.cmake

@@ -70,7 +70,7 @@ if (WITH_RANDOMX)
     endif()
 
     if (WITH_HWLOC)
-        list(APPEND SOURCES_CRYPTO
+        list(APPEND HEADERS_CRYPTO
              src/crypto/rx/RxNUMAStorage.h
             )
 

src/App.cpp

@@ -36,7 +36,6 @@
 #include "core/config/Config.h"
 #include "core/Controller.h"
 #include "core/Miner.h"
-#include "crypto/common/VirtualMemory.h"
 #include "net/Network.h"
 #include "Summary.h"
 #include "version.h"
@@ -80,8 +79,6 @@ int xmrig::App::exec()
         m_console = new Console(this);
     }
 
-    VirtualMemory::init();
-
     Summary::print(m_controller);
 
     if (m_controller->config()->isDryRun()) {

src/backend/common/Worker.cpp

@@ -34,8 +34,7 @@ xmrig::Worker::Worker(size_t id, int64_t affinity, int priority) :
     m_affinity(affinity),
     m_id(id),
     m_hashCount(0),
-    m_timestamp(0),
-    m_count(0)
+    m_timestamp(0)
 {
     m_node = VirtualMemory::bindToNUMANode(affinity);
 

src/backend/common/Worker.h

@@ -55,7 +55,7 @@ protected:
     std::atomic<uint64_t> m_hashCount;
     std::atomic<uint64_t> m_timestamp;
     uint32_t m_node     = 0;
-    uint64_t m_count;
+    uint64_t m_count    = 0;
 };
 
 

src/backend/common/interfaces/IMemoryPool.h

@@ -0,0 +1,52 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2018-2019 tevador     <tevador@gmail.com>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XMRIG_IMEMORYPOOL_H
+#define XMRIG_IMEMORYPOOL_H
+
+
+#include <cstdint>
+
+
+namespace xmrig {
+
+
+class IMemoryPool
+{
+public:
+    virtual ~IMemoryPool() = default;
+
+    virtual bool isHugePages(uint32_t node) const       = 0;
+    virtual uint8_t *get(size_t size, uint32_t node)    = 0;
+    virtual void release(uint32_t node)                 = 0;
+};
+
+
+} /* namespace xmrig */
+
+
+
+#endif /* XMRIG_IMEMORYPOOL_H */

src/backend/cpu/CpuWorker.cpp

@@ -62,7 +62,7 @@ xmrig::CpuWorker<N>::CpuWorker(size_t id, const CpuLaunchData &data) :
     m_miner(data.miner),
     m_ctx()
 {
-    m_memory = new VirtualMemory(m_algorithm.l3() * N, data.hugePages);
+    m_memory = new VirtualMemory(m_algorithm.l3() * N, data.hugePages, true);
 }
 
 

src/core/Controller.cpp

@@ -23,15 +23,17 @@
  */
 
 
-#include <cassert>
-
-
-#include "backend/cpu/Cpu.h"
 #include "core/Controller.h"
+#include "backend/cpu/Cpu.h"
+#include "core/config/Config.h"
 #include "core/Miner.h"
+#include "crypto/common/VirtualMemory.h"
 #include "net/Network.h"
 
 
+#include <cassert>
+
+
 xmrig::Controller::Controller(Process *process) :
     Base(process)
 {
@@ -41,6 +43,8 @@ xmrig::Controller::Controller(Process *process) :
 xmrig::Controller::~Controller()
 {
     delete m_network;
+
+    VirtualMemory::destroy();
 }
 
 
@@ -48,7 +52,10 @@ int xmrig::Controller::init()
 {
     Base::init();
 
+    VirtualMemory::init(config()->cpu().isHugePages(), -1);
+
     m_network = new Network(this);
+
     return 0;
 }
 

src/core/config/Config.h

@@ -26,11 +26,12 @@
 #define XMRIG_CONFIG_H
 
 
-#include <stdint.h>
+#include <cstdint>
 
 
 #include "backend/cpu/CpuConfig.h"
 #include "base/kernel/config/BaseConfig.h"
+#include "base/tools/Object.h"
 #include "rapidjson/fwd.h"
 
 
@@ -46,6 +47,8 @@ class OclConfig;
 class Config : public BaseConfig
 {
 public:
+    XMRIG_DISABLE_COPY_MOVE(Config);
+
     Config();
     ~Config() override;
 

src/crypto/common/MemoryPool.cpp

@@ -0,0 +1,95 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2018-2019 tevador     <tevador@gmail.com>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "crypto/common/MemoryPool.h"
+#include "crypto/common/VirtualMemory.h"
+
+
+#include <cassert>
+
+
+namespace xmrig {
+
+
+constexpr size_t pageSize = 2 * 1024 * 1024;
+
+
+} // namespace xmrig
+
+
+xmrig::MemoryPool::MemoryPool(size_t size, bool hugePages, uint32_t node) :
+    m_size(size)
+{
+    if (!size) {
+        return;
+    }
+
+    m_memory = new VirtualMemory(size * pageSize, hugePages, false, node);
+}
+
+
+xmrig::MemoryPool::~MemoryPool()
+{
+    delete m_memory;
+}
+
+
+bool xmrig::MemoryPool::isHugePages(uint32_t) const
+{
+    return m_memory && m_memory->isHugePages();
+}
+
+
+uint8_t *xmrig::MemoryPool::get(size_t size, uint32_t)
+{
+    assert(!(size % pageSize));
+
+    if (!m_memory || (m_memory->size() - m_offset) < size) {
+        return nullptr;
+    }
+
+    uint8_t *out = m_memory->scratchpad() + m_offset;
+
+    m_offset += size;
+    ++m_refs;
+
+    return out;
+}
+
+
+void xmrig::MemoryPool::release(uint32_t)
+{
+    assert(m_refs > 0);
+
+    if (m_refs > 0) {
+        --m_refs;
+    }
+
+    if (m_refs == 0) {
+        m_offset = 0;
+    }
+}

src/crypto/common/MemoryPool.h

@@ -0,0 +1,66 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2018-2019 tevador     <tevador@gmail.com>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef XMRIG_MEMORYPOOL_H
+#define XMRIG_MEMORYPOOL_H
+
+
+#include "backend/common/interfaces/IMemoryPool.h"
+#include "base/tools/Object.h"
+
+
+namespace xmrig {
+
+
+class VirtualMemory;
+
+
+class MemoryPool : public IMemoryPool
+{
+public:
+    XMRIG_DISABLE_COPY_MOVE_DEFAULT(MemoryPool)
+
+    MemoryPool(size_t size, bool hugePages, uint32_t node = 0);
+    ~MemoryPool() override;
+
+protected:
+    bool isHugePages(uint32_t node) const override;
+    uint8_t *get(size_t size, uint32_t node) override;
+    void release(uint32_t node) override;
+
+private:
+    size_t m_size           = 0;
+    size_t m_refs           = 0;
+    size_t m_offset         = 0;
+    VirtualMemory *m_memory = nullptr;
+};
+
+
+} /* namespace xmrig */
+
+
+
+#endif /* XMRIG_MEMORYPOOL_H */

src/crypto/common/VirtualMemory.cpp

@@ -25,41 +25,91 @@
  */
 
 
-#ifdef XMRIG_FEATURE_HWLOC
-#   include <hwloc.h>
-#   include "backend/cpu/platform/HwlocCpuInfo.h"
-#endif
-
-
 #include "crypto/common/VirtualMemory.h"
 #include "backend/cpu/Cpu.h"
 #include "base/io/log/Log.h"
+#include "crypto/common/MemoryPool.h"
+#include "crypto/common/portable/mm_malloc.h"
 
 
 #include <cinttypes>
+#include <mutex>
 
 
-uint32_t xmrig::VirtualMemory::bindToNUMANode(int64_t affinity)
+namespace xmrig {
+
+static IMemoryPool *pool = nullptr;
+static std::mutex mutex;
+
+} // namespace xmrig
+
+
+xmrig::VirtualMemory::VirtualMemory(size_t size, bool hugePages, bool usePool, uint32_t node, size_t alignSize) :
+    m_size(align(size)),
+    m_node(node)
 {
-#   ifdef XMRIG_FEATURE_HWLOC
-    if (affinity < 0 || Cpu::info()->nodes() < 2) {
-        return 0;
+    if (usePool) {
+        std::lock_guard<std::mutex> lock(mutex);
+        if (hugePages && !pool->isHugePages(node) && allocateLargePagesMemory()) {
+            return;
         }
 
-    auto cpu       = static_cast<HwlocCpuInfo *>(Cpu::info());
-    hwloc_obj_t pu = hwloc_get_pu_obj_by_os_index(cpu->topology(), static_cast<unsigned>(affinity));
+        m_scratchpad = pool->get(m_size, node);
+        if (m_scratchpad) {
+            m_flags.set(FLAG_HUGEPAGES, pool->isHugePages(node));
+            m_flags.set(FLAG_EXTERNAL,  true);
 
-    char *buffer;
-    hwloc_bitmap_asprintf(&buffer, pu->cpuset);
-
-    if (pu == nullptr || !cpu->membind(pu->nodeset)) {
-        LOG_WARN("CPU #%02" PRId64 " warning: \"can't bind memory\"", affinity);
-
-        return 0;
+            return;
+        }
     }
 
-    return hwloc_bitmap_first(pu->nodeset);
-#   else
+    if (hugePages && allocateLargePagesMemory()) {
+        return;
+    }
+
+    m_scratchpad = static_cast<uint8_t*>(_mm_malloc(m_size, alignSize));
+}
+
+
+xmrig::VirtualMemory::~VirtualMemory()
+{
+    if (!m_scratchpad) {
+        return;
+    }
+
+    if (m_flags.test(FLAG_EXTERNAL)) {
+        std::lock_guard<std::mutex> lock(mutex);
+        pool->release(m_node);
+    }
+
+    if (isHugePages()) {
+        freeLargePagesMemory();
+    }
+    else {
+        _mm_free(m_scratchpad);
+    }
+}
+
+
+#ifndef XMRIG_FEATURE_HWLOC
+uint32_t xmrig::VirtualMemory::bindToNUMANode(int64_t)
+{
     return 0;
+}
 #endif
+
+
+void xmrig::VirtualMemory::destroy()
+{
+    delete pool;
+}
+
+
+void xmrig::VirtualMemory::init(bool hugePages, int poolSize)
+{
+    if (!pool) {
+        osInit();
+    }
+
+    pool = new MemoryPool(poolSize < 0 ? Cpu::info()->threads() : poolSize, hugePages);
 }

src/crypto/common/VirtualMemory.h

@@ -45,7 +45,7 @@ class VirtualMemory
 public:
     XMRIG_DISABLE_COPY_MOVE_DEFAULT(VirtualMemory)
 
-    VirtualMemory(size_t size, bool hugePages = true, size_t align = 64);
+    VirtualMemory(size_t size, bool hugePages, bool usePool, uint32_t node = 0, size_t alignSize = 64);
     ~VirtualMemory();
 
     inline bool isHugePages() const     { return m_flags.test(FLAG_HUGEPAGES); }
@@ -61,9 +61,10 @@ public:
     static uint32_t bindToNUMANode(int64_t affinity);
     static void *allocateExecutableMemory(size_t size);
     static void *allocateLargePagesMemory(size_t size);
+    static void destroy();
     static void flushInstructionCache(void *p, size_t size);
     static void freeLargePagesMemory(void *p, size_t size);
-    static void init();
+    static void init(bool hugePages, int poolSize);
     static void protectExecutableMemory(void *p, size_t size);
     static void unprotectExecutableMemory(void *p, size_t size);
 
@@ -77,8 +78,14 @@ private:
         FLAG_MAX
     };
 
+    static void osInit();
+
+    bool allocateLargePagesMemory();
+    void freeLargePagesMemory();
+
+    const size_t m_size;
+    const uint32_t m_node;
     std::bitset<FLAG_MAX> m_flags;
-    size_t m_size                   = 0;
     uint8_t *m_scratchpad = nullptr;
 };
 

src/crypto/common/VirtualMemory_hwloc.cpp

@@ -0,0 +1,56 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2018      Lee Clagett <https://github.com/vtnerd>
+ * Copyright 2018-2019 SChernykh   <https://github.com/SChernykh>
+ * Copyright 2018-2019 tevador     <tevador@gmail.com>
+ * Copyright 2016-2019 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "crypto/common/VirtualMemory.h"
+#include "backend/cpu/Cpu.h"
+#include "backend/cpu/platform/HwlocCpuInfo.h"
+#include "base/io/log/Log.h"
+
+
+#include <hwloc.h>
+
+
+uint32_t xmrig::VirtualMemory::bindToNUMANode(int64_t affinity)
+{
+    if (affinity < 0 || Cpu::info()->nodes() < 2) {
+        return 0;
+    }
+
+    auto cpu       = static_cast<HwlocCpuInfo *>(Cpu::info());
+    hwloc_obj_t pu = hwloc_get_pu_obj_by_os_index(cpu->topology(), static_cast<unsigned>(affinity));
+
+    char *buffer;
+    hwloc_bitmap_asprintf(&buffer, pu->cpuset);
+
+    if (pu == nullptr || !cpu->membind(pu->nodeset)) {
+        LOG_WARN("CPU #%02" PRId64 " warning: \"can't bind memory\"", affinity);
+
+        return 0;
+    }
+
+    return hwloc_bitmap_first(pu->nodeset);
+}

src/crypto/common/VirtualMemory_unix.cpp

@@ -25,7 +25,7 @@
  */
 
 
-#include <stdlib.h>
+#include <cstdlib>
 #include <sys/mman.h>
 
 
@@ -38,47 +38,6 @@
 #endif
 
 
-xmrig::VirtualMemory::VirtualMemory(size_t size, bool hugePages, size_t align) :
-    m_size(VirtualMemory::align(size))
-{
-    if (hugePages) {
-        m_scratchpad = static_cast<uint8_t*>(allocateLargePagesMemory(m_size));
-        if (m_scratchpad) {
-            m_flags.set(FLAG_HUGEPAGES, true);
-
-            madvise(m_scratchpad, size, MADV_RANDOM | MADV_WILLNEED);
-
-            if (mlock(m_scratchpad, m_size) == 0) {
-                m_flags.set(FLAG_LOCK, true);
-            }
-
-            return;
-        }
-    }
-
-    m_scratchpad = static_cast<uint8_t*>(_mm_malloc(m_size, align));
-}
-
-
-xmrig::VirtualMemory::~VirtualMemory()
-{
-    if (!m_scratchpad) {
-        return;
-    }
-
-    if (isHugePages()) {
-        if (m_flags.test(FLAG_LOCK)) {
-            munlock(m_scratchpad, m_size);
-        }
-
-        freeLargePagesMemory(m_scratchpad, m_size);
-    }
-    else {
-        _mm_free(m_scratchpad);
-    }
-}
-
-
 bool xmrig::VirtualMemory::isHugepagesAvailable()
 {
     return true;
@@ -125,11 +84,6 @@ void xmrig::VirtualMemory::freeLargePagesMemory(void *p, size_t size)
 }
 
 
-void xmrig::VirtualMemory::init()
-{
-}
-
-
 void xmrig::VirtualMemory::protectExecutableMemory(void *p, size_t size)
 {
     mprotect(p, size, PROT_READ | PROT_EXEC);
@@ -140,3 +94,37 @@ void xmrig::VirtualMemory::unprotectExecutableMemory(void *p, size_t size)
 {
     mprotect(p, size, PROT_WRITE | PROT_EXEC);
 }
+
+
+void xmrig::VirtualMemory::osInit()
+{
+}
+
+
+bool xmrig::VirtualMemory::allocateLargePagesMemory()
+{
+    m_scratchpad = static_cast<uint8_t*>(allocateLargePagesMemory(m_size));
+    if (m_scratchpad) {
+        m_flags.set(FLAG_HUGEPAGES, true);
+
+        madvise(m_scratchpad, size, MADV_RANDOM | MADV_WILLNEED);
+
+        if (mlock(m_scratchpad, m_size) == 0) {
+            m_flags.set(FLAG_LOCK, true);
+        }
+
+        return true;
+    }
+
+    return false;
+}
+
+
+void xmrig::VirtualMemory::freeLargePagesMemory()
+{
+    if (m_flags.test(FLAG_LOCK)) {
+        munlock(m_scratchpad, m_size);
+    }
+
+    freeLargePagesMemory(m_scratchpad, m_size);
+}

src/crypto/common/VirtualMemory_win.cpp

@@ -150,37 +150,6 @@ static BOOL TrySetLockPagesPrivilege() {
 } // namespace xmrig
 
 
-xmrig::VirtualMemory::VirtualMemory(size_t size, bool hugePages, size_t align) :
-    m_size(VirtualMemory::align(size))
-{
-    if (hugePages) {
-        m_scratchpad = static_cast<uint8_t*>(allocateLargePagesMemory(m_size));
-        if (m_scratchpad) {
-            m_flags.set(FLAG_HUGEPAGES, true);
-
-            return;
-        }
-    }
-
-    m_scratchpad = static_cast<uint8_t*>(_mm_malloc(m_size, align));
-}
-
-
-xmrig::VirtualMemory::~VirtualMemory()
-{
-    if (!m_scratchpad) {
-        return;
-    }
-
-    if (isHugePages()) {
-        freeLargePagesMemory(m_scratchpad, m_size);
-    }
-    else {
-        _mm_free(m_scratchpad);
-    }
-}
-
-
 bool xmrig::VirtualMemory::isHugepagesAvailable()
 {
     return hugepagesAvailable;
@@ -218,12 +187,6 @@ void xmrig::VirtualMemory::freeLargePagesMemory(void *p, size_t)
 }
 
 
-void xmrig::VirtualMemory::init()
-{
-    hugepagesAvailable = TrySetLockPagesPrivilege();
-}
-
-
 void xmrig::VirtualMemory::protectExecutableMemory(void *p, size_t size)
 {
     DWORD oldProtect;
@@ -236,3 +199,28 @@ void xmrig::VirtualMemory::unprotectExecutableMemory(void *p, size_t size)
     DWORD oldProtect;
     VirtualProtect(p, size, PAGE_EXECUTE_READWRITE, &oldProtect);
 }
+
+
+void xmrig::VirtualMemory::osInit()
+{
+    hugepagesAvailable = TrySetLockPagesPrivilege();
+}
+
+
+bool xmrig::VirtualMemory::allocateLargePagesMemory()
+{
+    m_scratchpad = static_cast<uint8_t*>(allocateLargePagesMemory(m_size));
+    if (m_scratchpad) {
+        m_flags.set(FLAG_HUGEPAGES, true);
+
+        return true;
+    }
+
+    return false;
+}
+
+
+void xmrig::VirtualMemory::freeLargePagesMemory()
+{
+    freeLargePagesMemory(m_scratchpad, m_size);
+}

src/net/JobResults.cpp

@@ -105,7 +105,7 @@ static inline void checkHash(const JobBundle &bundle, std::vector<JobResult> &re
 static void getResults(JobBundle &bundle, std::vector<JobResult> &results, uint32_t &errors, bool hwAES)
 {
     const auto &algorithm = bundle.job.algorithm();
-    auto memory           = new VirtualMemory(algorithm.l3(), false);
+    auto memory           = new VirtualMemory(algorithm.l3(), false, false);
     uint8_t hash[32]{ 0 };
 
     if (algorithm.family() == Algorithm::RANDOM_X) {