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/*-
* Copyright (c) 2008-2012 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "thread.h"
static void *fop(void *);
static void print_stats(u_int);
typedef struct {
int bulk; /* bulk load */
int ckpt; /* session.checkpoint */
int create; /* session.create */
int cursor; /* session.open_cursor */
int drop; /* session.drop */
int upgrade; /* session.upgrade */
int verify; /* session.verify */
} STATS;
static STATS *run_stats;
/*
* r --
* Return a 32-bit pseudo-random number.
*
* This is an implementation of George Marsaglia's multiply-with-carry pseudo-
* random number generator. Computationally fast, with reasonable randomness
* properties.
*/
static inline uint32_t
r(void)
{
static uint32_t m_w = 0, m_z = 0;
if (m_w == 0) {
struct timeval t;
(void)gettimeofday(&t, NULL);
m_w = (uint32_t)t.tv_sec;
m_z = (uint32_t)t.tv_usec;
}
m_z = 36969 * (m_z & 65535) + (m_z >> 16);
m_w = 18000 * (m_w & 65535) + (m_w >> 16);
return (m_z << 16) + (m_w & 65535);
}
int
fop_start(u_int nthreads)
{
struct timeval start, stop;
double seconds;
pthread_t *tids;
u_int i;
int ret;
void *thread_ret;
/* Create statistics and thread structures. */
if ((run_stats = calloc(
(size_t)(nthreads), sizeof(*run_stats))) == NULL ||
(tids = calloc((size_t)(nthreads), sizeof(*tids))) == NULL)
die("calloc", errno);
(void)gettimeofday(&start, NULL);
/* Create threads. */
for (i = 0; i < nthreads; ++i)
if ((ret = pthread_create(
&tids[i], NULL, fop, (void *)(uintptr_t)i)) != 0)
die("pthread_create", ret);
/* Wait for the threads. */
for (i = 0; i < nthreads; ++i)
(void)pthread_join(tids[i], &thread_ret);
(void)gettimeofday(&stop, NULL);
seconds = (stop.tv_sec - start.tv_sec) +
(stop.tv_usec - start.tv_usec) * 1e-6;
print_stats(nthreads);
printf("timer: %.2lf seconds (%d ops/second)\n",
seconds, (int)((nthreads * nops) / seconds));
free(run_stats);
free(tids);
return (0);
}
/*
* fop --
* File operation function.
*/
static void *
fop(void *arg)
{
STATS *s;
pthread_t tid;
u_int i;
int id;
id = (int)(uintptr_t)arg;
tid = pthread_self();
sched_yield(); /* Get all the threads created. */
s = &run_stats[id];
for (i = 0; i < nops; ++i, sched_yield())
switch (r() % 7) {
case 0:
++s->bulk;
obj_bulk();
break;
case 1:
++s->create;
obj_create();
break;
case 2:
++s->cursor;
obj_cursor();
break;
case 3:
++s->drop;
obj_drop();
break;
case 4:
++s->ckpt;
obj_checkpoint();
break;
case 5:
++s->upgrade;
obj_upgrade();
break;
case 6:
++s->verify;
obj_verify();
break;
default:
break;
}
return (NULL);
}
/*
* print_stats --
* Display file operation thread stats.
*/
static void
print_stats(u_int nthreads)
{
STATS *s;
u_int id;
s = run_stats;
for (id = 0; id < nthreads; ++id, ++s)
printf(
"%2d: bulk %3d, ckpt %3d, create %3d, cursor %3d, "
"drop %3d, upg %3d, vrfy %3d\n",
id, s->bulk, s->ckpt, s->create, s->cursor,
s->drop, s->upgrade, s->verify);
}
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