Initial import.

unix/cpu_unix.c

@@ -0,0 +1,64 @@
+/* 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 2016-2017 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 <unistd.h>
+#include <sched.h>
+#include <pthread.h>
+
+#include "cpu.h"
+
+
+struct cpu_info cpu_info = { 0 };
+void cpu_init_common();
+
+
+void cpu_init() {
+    cpu_info.count = sysconf(_SC_NPROCESSORS_CONF);
+
+    cpu_init_common();
+}
+
+
+int get_optimal_threads_count() {
+    int count = cpu_info.count / 2;
+    return count < 1 ? 1 : count;
+}
+
+
+int affine_to_cpu_mask(int id, unsigned long mask)
+{
+    cpu_set_t set;
+    CPU_ZERO(&set);
+
+    for (unsigned i = 0; i < cpu_info.count; i++) {
+        if (mask & (1UL << i)) {
+            CPU_SET(i, &set);
+        }
+    }
+
+    if (id == -1) {
+        sched_setaffinity(0, sizeof(&set), &set);
+    } else {
+        pthread_setaffinity_np(pthread_self(), sizeof(&set), &set);
+    }
+}