Update donation flags

.gitignore

@@ -4,3 +4,5 @@ scripts/deps
 /CMakeLists.txt.user
 /.idea
 /src/backend/opencl/cl/cn/cryptonight_gen.cl
+/.vscode
+/..bfg-report

CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.5)
 project(xmrig)
 
+option(WITH_DONATION        "Enable donation" ON)
 option(WITH_HWLOC           "Enable hwloc support" ON)
 option(WITH_CN_LITE         "Enable CryptoNight-Lite algorithms family" ON)
 option(WITH_CN_HEAVY        "Enable CryptoNight-Heavy algorithms family" ON)
@@ -135,6 +136,13 @@ if (CMAKE_C_COMPILER_ID MATCHES GNU)
     set_source_files_properties(src/crypto/cn/CnHash.cpp PROPERTIES COMPILE_FLAGS "-Ofast -fno-tree-vectorize")
 endif()
 
+if(WITH_DONATION)
+    message("-- Donation state: enabled")
+else()
+    message("-- Donation state: disabled")
+    add_definitions(-DXMRIG_NO_DONATE)
+endif()
+
 if (WITH_VAES)
     add_definitions(-DXMRIG_VAES)
     set(HEADERS_CRYPTO "${HEADERS_CRYPTO}" src/crypto/cn/CryptoNight_x86_vaes.h)

src/crypto/randomx/jit_compiler_x86_static.S

@@ -350,4 +350,4 @@ DECL(randomx_reciprocal_fast):
 
 #if defined(__linux__) && defined(__ELF__)
 .section .note.GNU-stack,"",%progbits
-#endif
+#endif

src/crypto/randomx/randomx.cpp

@@ -45,6 +45,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "crypto/common/VirtualMemory.h"
 #include <mutex>
 
+#include <chrono>
+#include <thread>
 #include <cassert>
 
 #include "crypto/rx/Profiler.h"
@@ -363,6 +365,10 @@ alignas(64) RandomX_ConfigurationBase RandomX_CurrentConfig;
 
 static std::mutex vm_pool_mutex;
 
+const char* envRandomXNanoSeconds = std::getenv("XMRIG_RANDOMX_SLEEP_NANOSECONDS");
+
+int randomx_sleep_nanoseconds = (envRandomXNanoSeconds != nullptr) ? std::atoi(envRandomXNanoSeconds) : 0;
+
 extern "C" {
 
 	randomx_cache *randomx_create_cache(randomx_flags flags, uint8_t *memory) {
@@ -573,6 +579,7 @@ extern "C" {
 		machine->initScratchpad(&tempHash);
 		machine->resetRoundingMode();
 		for (uint32_t chain = 0; chain < RandomX_CurrentConfig.ProgramCount - 1; ++chain) {
+			std::this_thread::sleep_for(std::chrono::nanoseconds(randomx_sleep_nanoseconds));
 			machine->run(&tempHash);
 			rx_blake2b_wrapper::run(tempHash, sizeof(tempHash), machine->getRegisterFile(), sizeof(randomx::RegisterFile));
 		}
@@ -590,6 +597,7 @@ extern "C" {
 
 		machine->resetRoundingMode();
 		for (uint32_t chain = 0; chain < RandomX_CurrentConfig.ProgramCount - 1; ++chain) {
+			std::this_thread::sleep_for(std::chrono::nanoseconds(randomx_sleep_nanoseconds));
 			machine->run(&tempHash);
 			rx_blake2b_wrapper::run(tempHash, sizeof(tempHash), machine->getRegisterFile(), sizeof(randomx::RegisterFile));
 		}

src/crypto/rx/RxDataset.cpp

@@ -35,6 +35,10 @@
 namespace xmrig {
 
 
+const char* envRXDatasetSingleThreadInit = std::getenv("XMRIG_RX_DATASET_SINGLE_THREAD_INIT");
+
+bool rx_dataset_single_thread_init = (envRXDatasetSingleThreadInit != nullptr);
+
 static void init_dataset_wrapper(randomx_dataset *dataset, randomx_cache *cache, uint32_t startItem, uint32_t itemCount, int priority)
 {
     Platform::setThreadPriority(priority);
@@ -108,11 +112,16 @@ bool xmrig::RxDataset::init(const Buffer &seed, uint32_t numThreads, int priorit
             const uint32_t a = (datasetItemCount * i) / numThreads;
             const uint32_t b = (datasetItemCount * (i + 1)) / numThreads;
             threads.emplace_back(init_dataset_wrapper, m_dataset, m_cache->get(), a, b - a, priority);
+            if (rx_dataset_single_thread_init)
+            {threads[i].join();} // force it to be sequential
         }
 
-        for (uint32_t i = 0; i < numThreads; ++i) {
-            threads[i].join();
+        if (!rx_dataset_single_thread_init){
+            for (uint32_t i = 0; i < numThreads; ++i) {
+                threads[i].join();
+            }
         }
+
     }
     else {
         init_dataset_wrapper(m_dataset, m_cache->get(), 0, datasetItemCount, priority);

src/donate.h

@@ -37,8 +37,13 @@
  * If you plan on changing donations to 0%, please consider making a one-off donation to my wallet:
  * XMR: 48edfHu7V9Z84YzzMa6fUueoELZ9ZRXq9VetWzYGzKt52XU5xvqgzYnDK9URnRoJMk1j8nLwEVsaSWJ4fhdUyZijBGUicoD
  */
+
+#ifdef XMRIG_NO_DONATE
+constexpr const int kDefaultDonateLevel = 0;
+constexpr const int kMinimumDonateLevel = 0;
+#else
 constexpr const int kDefaultDonateLevel = 1;
 constexpr const int kMinimumDonateLevel = 1;
-
+#endif
 
 #endif // XMRIG_DONATE_H