136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
/*
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*
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* Conky, a system monitor, based on torsmo
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*
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* Any original torsmo code is licensed under the BSD license
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*
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* All code written since the fork of torsmo is licensed under the GPL
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*
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* Please see COPYING for details
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*
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* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
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* Copyright (c) 2005-2021 Brenden Matthews, Philip Kovacs, et. al.
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* (see AUTHORS)
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* All rights reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "config.h"
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#include "conky.h"
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#include "text_object.h"
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#ifdef __x86_64__
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#define CPU_FEATURE(x, z) __asm__ __volatile__("cpuid" : "=a"(z) : "a"(x))
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#define CPU_REGS(x, y, z) \
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__asm__ __volatile__("cpuid" : "=a"(z), "=b"(y) : "a"(x))
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#define CPU_STR2(regizter, a, b, c, d) \
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__asm__ __volatile__("cpuid" \
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: "=a"(a), "=b"(b), "=c"(c), "=d"(d) \
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: "a"(regizter))
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#define AmD 0x68747541
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#define InteL 0x756e6547
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#if defined(__FreeBSD__)
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#define TICKZ 100L
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#else
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#define TICKZ sysconf(_SC_CLK_TCK)
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#endif /* __FreeBSD__ */
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uint8_t has_tsc_reg(void) {
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uint_fast16_t vend = 0;
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uint_fast16_t leafs = 0;
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uint_fast16_t eax = 0;
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uint_fast16_t ecx = 0;
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uint_fast16_t edx = 0;
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uint_fast16_t ebx = 0;
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CPU_REGS(0x00000000, vend, leafs);
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if (0x00000001 > leafs) { return 1U; }
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if (static_cast<uint32_t>(vend) != AmD &&
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static_cast<uint32_t>(vend) != InteL) {
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return 1U;
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}
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CPU_STR2(0x00000001, eax, ebx, ecx, edx);
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if (0U == (edx & (1U << 4U))) { return 1U; }
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return 0U;
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}
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uintmax_t rdtsc(void) {
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unsigned int tickhi = 0;
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unsigned int ticklo = 0;
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uint_fast16_t eax = 0;
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uint_fast16_t ecx = 0;
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uint_fast16_t edx = 0;
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uint_fast16_t ebx = 0;
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uint_fast16_t regz = 0;
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uint_fast16_t x = 0;
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if (0U != (has_tsc_reg())) { goto seeya; }
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__asm__ __volatile__(
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"cpuid\n\t"
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"rdtsc\n\t"
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: "=a"(ticklo), "=d"(tickhi)::"%rbx", "%rcx");
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CPU_FEATURE(0x80000000, regz);
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if (0x80000001 > static_cast<uint32_t>(regz)) { goto seeya; }
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CPU_STR2(0x80000001, eax, ebx, ecx, edx);
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if (0U != (edx & (1U << 27U))) {
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for (x = 0; x < 6U; x++) {
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__asm__ __volatile__(
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"rdtscp\n\t"
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"mov %%edx, %0\n\t"
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"mov %%eax, %1\n\t"
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"cpuid\n\t"
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: "=r"(tickhi), "=r"(ticklo)::"%rax", "%rbx", "%rcx", "%rdx");
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}
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}
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seeya:
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return ((static_cast<uintmax_t>(tickhi) << 32) |
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static_cast<uintmax_t>(ticklo));
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}
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void get_cpu_clock_speed(char *str1, unsigned int p_max_size) {
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uintmax_t x = 0;
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uintmax_t z = 0;
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struct timespec tc = {0L, 0L};
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tc.tv_nsec = TICKZ * 1000000L;
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x = rdtsc();
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if (-1 == (nanosleep(&tc, NULL))) { return; }
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z = rdtsc();
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snprintf(str1, p_max_size, "%ju MHz", ((z - x) / 100000U));
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}
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void print_freq2(struct text_object *obj, char *p, unsigned int p_max_size) {
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(void)obj;
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get_cpu_clock_speed(p, p_max_size);
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}
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#else
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char *l337;
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#endif /* __x86_64__ */
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