Howard Chu
5 years ago
parent
cb6f96b9d1
commit
81c2ad6d5b
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Subproject commit 519b9cf70540bdd996e806251cde335c8eef8aca
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// Copyright (c) 2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/* Brain-dead simple portability wrapper over thread APIs for C */
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#pragma once
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#ifdef _WIN32
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#include <windows.h>
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#define CTHR_MUTEX_TYPE HANDLE
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#define CTHR_MUTEX_INIT NULL
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#define CTHR_MUTEX_LOCK(x) do { if (x == NULL) { \
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HANDLE p = CreateMutex(NULL, FALSE, NULL); \
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if (InterlockedCompareExchangePointer((PVOID*)&x, (PVOID)p, NULL) != NULL) \
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CloseHandle(p); \
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} WaitForSingleObject(x, INFINITE); } while(0)
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#define CTHR_MUTEX_UNLOCK(x) ReleaseMutex(x)
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#define CTHR_THREAD_TYPE HANDLE
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#define CTHR_THREAD_RTYPE void
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#define CTHR_THREAD_RETURN return
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#define CTHR_THREAD_CREATE(thr, func, arg) thr = (HANDLE)_beginthread(func, 0, arg)
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#define CTHR_THREAD_JOIN(thr) WaitForSingleObject(thr, INFINITE)
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#else
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#include <pthread.h>
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#define CTHR_MUTEX_TYPE pthread_mutex_t
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#define CTHR_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
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#define CTHR_MUTEX_LOCK(x) pthread_mutex_lock(&x)
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#define CTHR_MUTEX_UNLOCK(x) pthread_mutex_unlock(&x)
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#define CTHR_THREAD_TYPE pthread_t
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#define CTHR_THREAD_RTYPE void *
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#define CTHR_THREAD_RETURN return NULL
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#define CTHR_THREAD_CREATE(thr, func, arg) pthread_create(&thr, NULL, func, arg)
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#define CTHR_THREAD_JOIN(thr) pthread_join(thr, NULL)
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#endif
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@ -0,0 +1,357 @@
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// Copyright (c) 2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <assert.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "randomx.h"
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#include "c_threads.h"
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#include "hash-ops.h"
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#include "misc_log_ex.h"
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#define RX_LOGCAT "randomx"
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#if defined(_MSC_VER)
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#define THREADV __declspec(thread)
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#else
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#define THREADV __thread
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#endif
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typedef struct rx_state {
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CTHR_MUTEX_TYPE rs_mutex;
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char rs_hash[32];
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uint64_t rs_height;
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randomx_cache *rs_cache;
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} rx_state;
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static CTHR_MUTEX_TYPE rx_mutex = CTHR_MUTEX_INIT;
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static CTHR_MUTEX_TYPE rx_dataset_mutex = CTHR_MUTEX_INIT;
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static rx_state rx_s[2] = {{CTHR_MUTEX_INIT,{0},0,0},{CTHR_MUTEX_INIT,{0},0,0}};
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static randomx_dataset *rx_dataset;
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static uint64_t rx_dataset_height;
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static THREADV randomx_vm *rx_vm = NULL;
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static THREADV int rx_toggle;
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static void local_abort(const char *msg)
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{
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fprintf(stderr, "%s\n", msg);
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#ifdef NDEBUG
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_exit(1);
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#else
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abort();
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#endif
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}
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/**
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* @brief uses cpuid to determine if the CPU supports the AES instructions
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* @return true if the CPU supports AES, false otherwise
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*/
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static inline int force_software_aes(void)
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{
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static int use = -1;
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if (use != -1)
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return use;
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const char *env = getenv("MONERO_USE_SOFTWARE_AES");
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if (!env) {
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use = 0;
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}
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else if (!strcmp(env, "0") || !strcmp(env, "no")) {
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use = 0;
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}
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else {
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use = 1;
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}
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return use;
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}
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static void cpuid(int CPUInfo[4], int InfoType)
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{
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#if defined(__x86_64__)
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__asm __volatile__
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(
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"cpuid":
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"=a" (CPUInfo[0]),
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"=b" (CPUInfo[1]),
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"=c" (CPUInfo[2]),
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"=d" (CPUInfo[3]) :
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"a" (InfoType), "c" (0)
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);
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#endif
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}
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static inline int check_aes_hw(void)
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{
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#if defined(__x86_64__)
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int cpuid_results[4];
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static int supported = -1;
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if(supported >= 0)
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return supported;
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cpuid(cpuid_results,1);
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return supported = cpuid_results[2] & (1 << 25);
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#else
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return 0;
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#endif
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}
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static volatile int use_rx_jit_flag = -1;
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static inline int use_rx_jit(void)
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{
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#if defined(__x86_64__)
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if (use_rx_jit_flag != -1)
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return use_rx_jit_flag;
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const char *env = getenv("MONERO_USE_RX_JIT");
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if (!env) {
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use_rx_jit_flag = 1;
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}
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else if (!strcmp(env, "0") || !strcmp(env, "no")) {
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use_rx_jit_flag = 0;
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}
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else {
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use_rx_jit_flag = 1;
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}
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return use_rx_jit_flag;
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#else
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return 0;
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#endif
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}
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#define SEEDHASH_EPOCH_BLOCKS 2048 /* Must be same as BLOCKS_SYNCHRONIZING_MAX_COUNT in cryptonote_config.h */
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#define SEEDHASH_EPOCH_LAG 64
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void rx_reorg(const uint64_t split_height) {
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int i;
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CTHR_MUTEX_LOCK(rx_mutex);
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for (i=0; i<2; i++) {
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if (split_height < rx_s[i].rs_height)
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rx_s[i].rs_height = 1; /* set to an invalid seed height */
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}
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CTHR_MUTEX_UNLOCK(rx_mutex);
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}
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uint64_t rx_seedheight(const uint64_t height) {
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uint64_t s_height = (height <= SEEDHASH_EPOCH_BLOCKS+SEEDHASH_EPOCH_LAG) ? 0 :
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(height - SEEDHASH_EPOCH_LAG - 1) & ~(SEEDHASH_EPOCH_BLOCKS-1);
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return s_height;
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}
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void rx_seedheights(const uint64_t height, uint64_t *seedheight, uint64_t *nextheight) {
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*seedheight = rx_seedheight(height);
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*nextheight = rx_seedheight(height + SEEDHASH_EPOCH_LAG);
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}
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typedef struct seedinfo {
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randomx_cache *si_cache;
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unsigned long si_start;
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unsigned long si_count;
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} seedinfo;
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static CTHR_THREAD_RTYPE rx_seedthread(void *arg) {
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seedinfo *si = arg;
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randomx_init_dataset(rx_dataset, si->si_cache, si->si_start, si->si_count);
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CTHR_THREAD_RETURN;
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}
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static void rx_initdata(randomx_cache *rs_cache, const int miners, const uint64_t seedheight) {
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if (miners > 1) {
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unsigned long delta = randomx_dataset_item_count() / miners;
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unsigned long start = 0;
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int i;
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seedinfo *si;
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CTHR_THREAD_TYPE *st;
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si = malloc(miners * sizeof(seedinfo));
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if (si == NULL)
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local_abort("Couldn't allocate RandomX mining threadinfo");
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st = malloc(miners * sizeof(CTHR_THREAD_TYPE));
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if (st == NULL) {
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free(si);
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local_abort("Couldn't allocate RandomX mining threadlist");
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}
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for (i=0; i<miners-1; i++) {
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si[i].si_cache = rs_cache;
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si[i].si_start = start;
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si[i].si_count = delta;
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start += delta;
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}
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si[i].si_cache = rs_cache;
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si[i].si_start = start;
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si[i].si_count = randomx_dataset_item_count() - start;
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for (i=1; i<miners; i++) {
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CTHR_THREAD_CREATE(st[i], rx_seedthread, &si[i]);
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}
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randomx_init_dataset(rx_dataset, rs_cache, 0, si[0].si_count);
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for (i=1; i<miners; i++) {
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CTHR_THREAD_JOIN(st[i]);
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}
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free(st);
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free(si);
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} else {
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randomx_init_dataset(rx_dataset, rs_cache, 0, randomx_dataset_item_count());
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}
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rx_dataset_height = seedheight;
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}
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void rx_slow_hash(const uint64_t mainheight, const uint64_t seedheight, const char *seedhash, const void *data, size_t length,
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char *hash, int miners, int is_alt) {
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uint64_t s_height = rx_seedheight(mainheight);
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int changed = 0;
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int toggle = is_alt ? s_height : seedheight;
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randomx_flags flags = RANDOMX_FLAG_DEFAULT;
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rx_state *rx_sp;
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randomx_cache *cache;
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toggle = (toggle & SEEDHASH_EPOCH_BLOCKS) != 0;
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CTHR_MUTEX_LOCK(rx_mutex);
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/* if alt block but with same seed as mainchain, no need for alt cache */
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if (is_alt && s_height == seedheight && !memcmp(rx_s[toggle].rs_hash, seedhash, sizeof(rx_s[toggle].rs_hash)))
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is_alt = 0;
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/* RPC could request an earlier block on mainchain */
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if (!is_alt && s_height > seedheight)
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is_alt = 1;
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toggle ^= (is_alt != 0);
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if (toggle != rx_toggle)
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changed = 1;
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rx_toggle = toggle;
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rx_sp = &rx_s[toggle];
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CTHR_MUTEX_LOCK(rx_sp->rs_mutex);
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CTHR_MUTEX_UNLOCK(rx_mutex);
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cache = rx_sp->rs_cache;
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if (cache == NULL) {
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if (use_rx_jit())
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flags |= RANDOMX_FLAG_JIT;
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if (cache == NULL) {
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cache = randomx_alloc_cache(flags | RANDOMX_FLAG_LARGE_PAGES);
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if (cache == NULL) {
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mdebug(RX_LOGCAT, "Couldn't use largePages for RandomX cache");
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cache = randomx_alloc_cache(flags);
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}
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if (cache == NULL)
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local_abort("Couldn't allocate RandomX cache");
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}
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}
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if (rx_sp->rs_height != seedheight || rx_sp->rs_cache == NULL || memcmp(seedhash, rx_sp->rs_hash, sizeof(rx_sp->rs_hash))) {
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randomx_init_cache(cache, seedhash, 32);
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rx_sp->rs_cache = cache;
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rx_sp->rs_height = seedheight;
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memcpy(rx_sp->rs_hash, seedhash, sizeof(rx_sp->rs_hash));
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changed = 1;
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}
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if (rx_vm == NULL) {
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randomx_flags flags = RANDOMX_FLAG_DEFAULT;
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if (use_rx_jit()) {
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flags |= RANDOMX_FLAG_JIT;
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if (!miners)
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flags |= RANDOMX_FLAG_SECURE;
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}
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if(!force_software_aes() && check_aes_hw())
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flags |= RANDOMX_FLAG_HARD_AES;
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if (miners) {
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CTHR_MUTEX_LOCK(rx_dataset_mutex);
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if (rx_dataset == NULL) {
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rx_dataset = randomx_alloc_dataset(RANDOMX_FLAG_LARGE_PAGES);
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if (rx_dataset == NULL) {
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mdebug(RX_LOGCAT, "Couldn't use largePages for RandomX dataset");
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rx_dataset = randomx_alloc_dataset(RANDOMX_FLAG_DEFAULT);
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}
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if (rx_dataset != NULL)
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rx_initdata(rx_sp->rs_cache, miners, seedheight);
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}
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if (rx_dataset != NULL)
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flags |= RANDOMX_FLAG_FULL_MEM;
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else {
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miners = 0;
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mwarning(RX_LOGCAT, "Couldn't allocate RandomX dataset for miner");
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}
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CTHR_MUTEX_UNLOCK(rx_dataset_mutex);
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}
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rx_vm = randomx_create_vm(flags | RANDOMX_FLAG_LARGE_PAGES, rx_sp->rs_cache, rx_dataset);
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if(rx_vm == NULL) { //large pages failed
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mdebug(RX_LOGCAT, "Couldn't use largePages for RandomX VM");
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rx_vm = randomx_create_vm(flags, rx_sp->rs_cache, rx_dataset);
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}
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if(rx_vm == NULL) {//fallback if everything fails
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flags = RANDOMX_FLAG_DEFAULT | (miners ? RANDOMX_FLAG_FULL_MEM : 0);
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rx_vm = randomx_create_vm(flags, rx_sp->rs_cache, rx_dataset);
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}
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if (rx_vm == NULL)
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local_abort("Couldn't allocate RandomX VM");
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} else if (miners) {
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CTHR_MUTEX_LOCK(rx_dataset_mutex);
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if (rx_dataset != NULL && rx_dataset_height != seedheight)
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rx_initdata(cache, miners, seedheight);
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CTHR_MUTEX_UNLOCK(rx_dataset_mutex);
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} else if (changed) {
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randomx_vm_set_cache(rx_vm, rx_sp->rs_cache);
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}
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/* mainchain users can run in parallel */
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if (!is_alt)
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CTHR_MUTEX_UNLOCK(rx_sp->rs_mutex);
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randomx_calculate_hash(rx_vm, data, length, hash);
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/* altchain slot users always get fully serialized */
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if (is_alt)
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CTHR_MUTEX_UNLOCK(rx_sp->rs_mutex);
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}
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void rx_slow_hash_allocate_state(void) {
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}
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void rx_slow_hash_free_state(void) {
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if (rx_vm != NULL) {
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randomx_destroy_vm(rx_vm);
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rx_vm = NULL;
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}
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}
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void rx_stop_mining(void) {
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CTHR_MUTEX_LOCK(rx_dataset_mutex);
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if (rx_dataset != NULL) {
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randomx_dataset *rd = rx_dataset;
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rx_dataset = NULL;
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randomx_release_dataset(rd);
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}
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CTHR_MUTEX_UNLOCK(rx_dataset_mutex);
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}
|
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