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Diffstat (limited to 'libparc/parc/developer/parc_TimingIntel.h')
-rwxr-xr-x | libparc/parc/developer/parc_TimingIntel.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/libparc/parc/developer/parc_TimingIntel.h b/libparc/parc/developer/parc_TimingIntel.h deleted file mode 100755 index 4a90896d..00000000 --- a/libparc/parc/developer/parc_TimingIntel.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Copyright (c) 2017 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/** - * @file parc_TimingIntel.h - * @ingroup developer - * @brief Macros for timing code - * - * This code uses the Intel recommended benchmarking techniques described - * in the whitepaper "How to Benchmakr Code Execution Times on Intel (R) IA-32 and - * IA-64 Instruction Set Architectures" available at: - * - * http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/ia-32-ia-64-benchmark-code-execution-paper.pdf - * - * - */ -#ifndef libparc_parc_TimingIntel_h -#define libparc_parc_TimingIntel_h - -#ifdef PARCTIMING_INTEL -#include <stdint.h> -#include <stdbool.h> - -/** - * Reads the TSC via the best available CPU instruction - * - * Will execute a RDTSC or RDTSCP instruction followed by an instruction pipeline block - * CPUID instruction. - * - * @param [out] hi The high-order 32-bits - * @param [out] lo The low-order 32-bits - * - * Example: - * @code - * { - * <#example#> - * } - * @endcode - */ -void parcTimingIntel_rdtsc(unsigned *hi, unsigned *lo); - -/** - * Checks initialization for RDTSCP instruction availability - * - * Checks if RDTSCP is availalbe on the system and sets a global. - * - * Example: - * @code - * { - * parcTiminIntel_RuntimeInit(); - * } - * @endcode - */ -void parcTiminIntel_RuntimeInit(void); - -#define _private_parcTiming_Init(prefix) \ - parcTiminIntel_RuntimeInit(); \ - static unsigned prefix ## _cycles_low0, prefix ## _cycles_high0; \ - static unsigned prefix ## _cycles_low1, prefix ## _cycles_high1; \ - \ - __asm volatile ("CPUID\n\t" "RDTSC\n\t" \ - "mov %%edx, %0\n\t" \ - "mov %%eax, %1\n\t" : "=r" (prefix ## _cycles_high0), "=r" (prefix ## _cycles_low0):: \ - "%rax", "%rbx", "%rcx", "%rdx"); \ - parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1)); \ - __asm volatile ("CPUID\n\t" \ - "RDTSC\n\t" \ - "mov %%edx, %0\n\t" \ - "mov %%eax, %1\n\t" : "=r" (prefix ## _cycles_high0), "=r" (prefix ## _cycles_low0):: \ - "%rax", "%rbx", "%rcx", "%rdx"); \ - parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1)); - -#define _private_parcTiming_Start(prefix) \ - parcTimingIntel_rdtsc(&(prefix ## _cycles_high0), &(prefix ## _cycles_low0)); - -#define _private_parcTiming_Stop(prefix) \ - parcTimingIntel_rdtsc(&(prefix ## _cycles_high1), &(prefix ## _cycles_low1)); - -#define _private_parcTiming_CalculateStartTime(prefix) (((uint64_t) prefix ## _cycles_high0 << 32) | prefix ## _cycles_low0) -#define _private_parcTiming_CalculateStopTime(prefix) (((uint64_t) prefix ## _cycles_high1 << 32) | prefix ## _cycles_low1) - -#define _private_parcTiming_Delta(prefix) \ - (_private_parcTiming_CalculateStopTime(prefix) - _private_parcTiming_CalculateStartTime(prefix)) - -// No teardown work that we need to do -#define _private_parcTiming_Fini(prefix) - -#endif // PARCTIMING_INTEL -#endif // libparc_parc_TimingIntel_h - |