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/*
* Copyright (c) 2011 Anil Madhavapeddy <anil@recoil.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#define PRODUCE_GLIBC_MEMSET 1
#define PRODUCE_STOS_MEMSET 2
#define PRODUCE_LOOP 3
typedef struct {
int num;
int size;
size_t count;
bool per_iter_timings;
void *data;
const char *output_dir;
const char *name;
int write_in_place;
int read_in_place;
int produce_method;
int do_verify;
int first_core;
int second_core;
int numa_node;
} test_data;
typedef struct {
const char *name;
int is_latency_test;
void (*init_test)(test_data *);
void (*init_parent)(test_data *);
void (*finish_parent)(test_data *);
void (*init_child)(test_data *);
void (*finish_child)(test_data *);
struct iovec* (*get_write_buffer)(test_data *, int size, int* n_vecs);
void (*release_write_buffer)(test_data *, struct iovec* vecs, int n_vecs);
struct iovec* (*get_read_buffer)(test_data *, int size, int* n_vecs);
void (*release_read_buffer)(test_data *, struct iovec* vecs, int n_vecs);
void (*parent_ping)(test_data *);
void (*child_ping)(test_data *);
} test_t;
static inline unsigned long
rdtsc(void)
{
unsigned long a, d;
asm volatile("rdtsc"
: "=a" (a), "=d" (d)
);
return (d << 32) | a;
}
void run_test(int argc, char *argv[], test_t *test);
void dump_tsc_counters(test_data *td, unsigned long *counts, int nr_samples);
void logmsg(test_data *td,
const char *file,
const char *fmt,
...)
__attribute__((format (printf, 3, 4)));