mirror of
https://github.com/xmrig/xmrig.git
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118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
#include <time.h>
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#include <string.h>
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#include "impl-select.h"
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#include "3rdparty/argon2.h"
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extern uint64_t uv_hrtime(void);
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#define BENCH_SAMPLES 1024U
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#define BENCH_MEM_BLOCKS 512
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#ifdef _MSC_VER
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# define strcasecmp _stricmp
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#endif
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static argon2_impl selected_argon_impl = { "default", NULL, fill_segment_default };
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/* the benchmark routine is not thread-safe, so we can use a global var here: */
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static block memory[BENCH_MEM_BLOCKS];
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static uint64_t benchmark_impl(const argon2_impl *impl) {
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memset(memory, 0, sizeof(memory));
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argon2_instance_t instance;
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instance.version = ARGON2_VERSION_NUMBER;
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instance.memory = memory;
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instance.passes = 1;
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instance.memory_blocks = BENCH_MEM_BLOCKS;
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instance.segment_length = BENCH_MEM_BLOCKS / ARGON2_SYNC_POINTS;
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instance.lane_length = instance.segment_length * ARGON2_SYNC_POINTS;
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instance.lanes = 1;
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instance.threads = 1;
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instance.type = Argon2_id;
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argon2_position_t pos;
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pos.lane = 0;
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pos.pass = 0;
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pos.slice = 0;
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pos.index = 0;
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/* warm-up cache: */
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impl->fill_segment(&instance, pos);
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/* OK, now measure: */
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const uint64_t time = uv_hrtime();
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for (uint32_t i = 0; i < BENCH_SAMPLES; i++) {
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impl->fill_segment(&instance, pos);
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}
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return uv_hrtime() - time;
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}
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void argon2_select_impl()
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{
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argon2_impl_list impls;
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const argon2_impl *best_impl = NULL;
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uint64_t best_bench = UINT_MAX;
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argon2_get_impl_list(&impls);
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for (uint32_t i = 0; i < impls.count; i++) {
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const argon2_impl *impl = &impls.entries[i];
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if (impl->check != NULL && !impl->check()) {
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continue;
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}
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const uint64_t bench = benchmark_impl(impl);
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if (bench < best_bench) {
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best_bench = bench;
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best_impl = impl;
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}
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}
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if (best_impl != NULL) {
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selected_argon_impl = *best_impl;
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}
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}
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void xmrig_ar2_fill_segment(const argon2_instance_t *instance, argon2_position_t position)
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{
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selected_argon_impl.fill_segment(instance, position);
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}
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const char *argon2_get_impl_name()
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{
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return selected_argon_impl.name;
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}
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int argon2_select_impl_by_name(const char *name)
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{
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argon2_impl_list impls;
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argon2_get_impl_list(&impls);
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for (uint32_t i = 0; i < impls.count; i++) {
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const argon2_impl *impl = &impls.entries[i];
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if (strcasecmp(impl->name, name) == 0) {
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selected_argon_impl = *impl;
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return 1;
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}
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}
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return 0;
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}
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