*
* Userspace RCU library - test program
*
- * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.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
*/
#define _GNU_SOURCE
+#include "../config.h"
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
-#include <sys/syscall.h>
-#include <sched.h>
+#include <errno.h>
#include <urcu/arch.h>
+#include <urcu/tls-compat.h>
+#include "cpuset.h"
-/* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
-#define CACHE_LINE_SIZE 4096
+#ifdef __linux__
+#include <syscall.h>
+#endif
/* hardcoded number of CPUs */
#define NR_CPUS 16384
#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#else
-#define debug_yield_read()
+#define rcu_debug_yield_read()
#endif
#include <urcu.h>
-struct test_array {
- int a;
-};
-
static volatile int test_go, test_stop;
static unsigned long wdelay;
-static struct test_array *test_rcu_pointer;
+static int *test_rcu_pointer;
static unsigned long duration;
/* read-side C.S. duration, in loops */
static unsigned long rduration;
-static inline void loop_sleep(unsigned long l)
+/* write-side C.S. duration, in loops */
+static unsigned long wduration;
+
+static inline void loop_sleep(unsigned long loops)
{
- while(l-- != 0)
- cpu_relax();
+ while (loops-- != 0)
+ caa_cpu_relax();
}
static int verbose_mode;
static void set_affinity(void)
{
+#if HAVE_SCHED_SETAFFINITY
cpu_set_t mask;
- int cpu;
- int ret;
+ int cpu, ret;
+#endif /* HAVE_SCHED_SETAFFINITY */
if (!use_affinity)
return;
+#if HAVE_SCHED_SETAFFINITY
ret = pthread_mutex_lock(&affinity_mutex);
if (ret) {
perror("Error in pthread mutex lock");
perror("Error in pthread mutex unlock");
exit(-1);
}
+
CPU_ZERO(&mask);
CPU_SET(cpu, &mask);
+#if SCHED_SETAFFINITY_ARGS == 2
+ sched_setaffinity(0, &mask);
+#else
sched_setaffinity(0, sizeof(mask), &mask);
+#endif
+#endif /* HAVE_SCHED_SETAFFINITY */
}
/*
return !test_stop;
}
-static unsigned long long __thread nr_writes;
-static unsigned long long __thread nr_reads;
+static DEFINE_URCU_TLS(unsigned long long, nr_writes);
+static DEFINE_URCU_TLS(unsigned long long, nr_reads);
static unsigned int nr_readers;
static unsigned int nr_writers;
}
}
-/*
- * malloc/free are reusing memory areas too quickly, which does not let us
- * test races appropriately. Use a large circular array for allocations.
- * ARRAY_SIZE is larger than nr_writers, which insures we never run over our tail.
- */
-#define ARRAY_SIZE (1048576 * nr_writers)
-#define ARRAY_POISON 0xDEADBEEF
-static int array_index;
-static struct test_array *test_array;
-
-static struct test_array *test_array_alloc(void)
-{
- struct test_array *ret;
- int index;
-
- rcu_copy_mutex_lock();
- index = array_index % ARRAY_SIZE;
- assert(test_array[index].a == ARRAY_POISON ||
- test_array[index].a == 0);
- ret = &test_array[index];
- array_index++;
- if (array_index == ARRAY_SIZE)
- array_index = 0;
- rcu_copy_mutex_unlock();
- return ret;
-}
-
-static void test_array_free(struct test_array *ptr)
-{
- if (!ptr)
- return;
- rcu_copy_mutex_lock();
- ptr->a = ARRAY_POISON;
- rcu_copy_mutex_unlock();
-}
-
void *thr_reader(void *_count)
{
unsigned long long *count = _count;
- struct test_array *local_ptr;
+ int *local_ptr;
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
- "reader", pthread_self(), (unsigned long)gettid());
+ "reader", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
set_affinity();
rcu_register_thread();
+ assert(!rcu_read_ongoing());
while (!test_go)
{
}
- smp_mb();
+ cmm_smp_mb();
for (;;) {
rcu_read_lock();
+ assert(rcu_read_ongoing());
local_ptr = rcu_dereference(test_rcu_pointer);
- debug_yield_read();
+ rcu_debug_yield_read();
if (local_ptr)
- assert(local_ptr->a == 8);
- if (unlikely(rduration))
+ assert(*local_ptr == 8);
+ if (caa_unlikely(rduration))
loop_sleep(rduration);
rcu_read_unlock();
- nr_reads++;
- if (unlikely(!test_duration_read()))
+ URCU_TLS(nr_reads)++;
+ if (caa_unlikely(!test_duration_read()))
break;
}
rcu_unregister_thread();
- *count = nr_reads;
+ /* test extra thread registration */
+ rcu_register_thread();
+ rcu_unregister_thread();
+
+ *count = URCU_TLS(nr_reads);
printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
- "reader", pthread_self(), (unsigned long)gettid());
+ "reader", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
return ((void*)1);
}
void *thr_writer(void *_count)
{
unsigned long long *count = _count;
- struct test_array *new, *old;
+ int *new, *old;
printf_verbose("thread_begin %s, thread id : %lx, tid %lu\n",
- "writer", pthread_self(), (unsigned long)gettid());
+ "writer", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
set_affinity();
while (!test_go)
{
}
- smp_mb();
+ cmm_smp_mb();
for (;;) {
- new = test_array_alloc();
- new->a = 8;
- old = rcu_publish_content(&test_rcu_pointer, new);
+ new = malloc(sizeof(int));
+ assert(new);
+ *new = 8;
+ old = rcu_xchg_pointer(&test_rcu_pointer, new);
+ if (caa_unlikely(wduration))
+ loop_sleep(wduration);
+ synchronize_rcu();
if (old)
- old->a = 0;
- test_array_free(old);
- nr_writes++;
- if (unlikely(!test_duration_write()))
+ *old = 0;
+ free(old);
+ URCU_TLS(nr_writes)++;
+ if (caa_unlikely(!test_duration_write()))
break;
- if (unlikely(wdelay))
+ if (caa_unlikely(wdelay))
loop_sleep(wdelay);
}
printf_verbose("thread_end %s, thread id : %lx, tid %lu\n",
- "writer", pthread_self(), (unsigned long)gettid());
- *count = nr_writes;
+ "writer", (unsigned long) pthread_self(),
+ (unsigned long) gettid());
+ *count = URCU_TLS(nr_writes);
return ((void*)2);
}
#endif
printf(" [-d delay] (writer period (us))");
printf(" [-c duration] (reader C.S. duration (in loops))");
+ printf(" [-e duration] (writer C.S. duration (in loops))");
printf(" [-v] (verbose output)");
printf(" [-a cpu#] [-a cpu#]... (affinity)");
printf("\n");
switch (argv[i][1]) {
#ifdef DEBUG_YIELD
case 'r':
- yield_active |= YIELD_READ;
+ rcu_yield_active |= RCU_YIELD_READ;
break;
case 'w':
- yield_active |= YIELD_WRITE;
+ rcu_yield_active |= RCU_YIELD_WRITE;
break;
#endif
case 'a':
}
wdelay = atol(argv[++i]);
break;
+ case 'e':
+ if (argc < i + 2) {
+ show_usage(argc, argv);
+ return -1;
+ }
+ wduration = atol(argv[++i]);
+ break;
case 'v':
verbose_mode = 1;
break;
printf_verbose("Writer delay : %lu loops.\n", wdelay);
printf_verbose("Reader duration : %lu loops.\n", rduration);
printf_verbose("thread %-6s, thread id : %lx, tid %lu\n",
- "main", pthread_self(), (unsigned long)gettid());
+ "main", (unsigned long) pthread_self(),
+ (unsigned long)gettid());
- test_array = malloc(sizeof(*test_array) * ARRAY_SIZE);
tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
count_reader = malloc(sizeof(*count_reader) * nr_readers);
exit(1);
}
- smp_mb();
+ cmm_smp_mb();
test_go = 1;
printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
tot_writes);
- printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu "
+ printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
"nr_writers %3u "
"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
- argv[0], duration, nr_readers, rduration,
+ argv[0], duration, nr_readers, rduration, wduration,
nr_writers, wdelay, tot_reads, tot_writes,
tot_reads + tot_writes);
- test_array_free(test_rcu_pointer);
- free(test_array);
+ free(test_rcu_pointer);
free(tid_reader);
free(tid_writer);
free(count_reader);
projects / urcu.git / blobdiff