Fix tests: use of uninitialized variables

[userspace-rcu.git] / tests / test_perthreadlock.c

diff --git a/tests/test_perthreadlock.c b/tests/test_perthreadlock.c
index b573fb08ed5d351bcccdec622563c8f7ac8868bb..4996e7f0c0d395ce70cc26774c9906b4daab8b5f 100644 (file)
--- a/tests/test_perthreadlock.c
+++ b/tests/test_perthreadlock.c
@@ -3,7 +3,7 @@
  *
  * 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
@@ -31,11 +31,15 @@
 #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"
+
+#ifdef __linux__
+#include <syscall.h>
+#endif
 
 /* hardcoded number of CPUs */
 #define NR_CPUS 16384
@@ -68,7 +72,7 @@ struct test_array {
 
 struct per_thread_lock {
        pthread_mutex_t lock;
-} __attribute__((aligned(CACHE_LINE_SIZE)));   /* cache-line aligned */
+} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));       /* cache-line aligned */
 
 static struct per_thread_lock *per_thread_lock;
 
@@ -89,7 +93,7 @@ static unsigned long wduration;
 static inline void loop_sleep(unsigned long l)
 {
        while(l-- != 0)
-               cpu_relax();
+               caa_cpu_relax();
 }
 
 static int verbose_mode;
@@ -106,12 +110,6 @@ static int use_affinity = 0;
 
 pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
 
-#ifndef HAVE_CPU_SET_T
-typedef unsigned long cpu_set_t;
-# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
-# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0)
-#endif
-
 static void set_affinity(void)
 {
        cpu_set_t mask;
@@ -156,13 +154,13 @@ static int test_duration_read(void)
        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 long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_writes;
+unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_writes;
 static
-unsigned long long __attribute__((aligned(CACHE_LINE_SIZE))) *tot_nr_reads;
+unsigned long long __attribute__((aligned(CAA_CACHE_LINE_SIZE))) *tot_nr_reads;
 
 static unsigned int nr_readers;
 static unsigned int nr_writers;
@@ -195,7 +193,8 @@ void *thr_reader(void *data)
        unsigned long tidx = (unsigned long)data;
 
        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();
 
@@ -206,17 +205,18 @@ void *thr_reader(void *data)
        for (;;) {
                pthread_mutex_lock(&per_thread_lock[tidx].lock);
                assert(test_array.a == 8);
-               if (unlikely(rduration))
+               if (caa_unlikely(rduration))
                        loop_sleep(rduration);
                pthread_mutex_unlock(&per_thread_lock[tidx].lock);
-               nr_reads++;
-               if (unlikely(!test_duration_read()))
+               URCU_TLS(nr_reads)++;
+               if (caa_unlikely(!test_duration_read()))
                        break;
        }
 
-       tot_nr_reads[tidx] = nr_reads;
+       tot_nr_reads[tidx] = 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);
 
 }
@@ -227,14 +227,15 @@ void *thr_writer(void *data)
        long tidx;
 
        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 (;;) {
                for (tidx = 0; tidx < nr_readers; tidx++) {
@@ -242,21 +243,22 @@ void *thr_writer(void *data)
                }
                test_array.a = 0;
                test_array.a = 8;
-               if (unlikely(wduration))
+               if (caa_unlikely(wduration))
                        loop_sleep(wduration);
                for (tidx = (long)nr_readers - 1; tidx >= 0; tidx--) {
                        pthread_mutex_unlock(&per_thread_lock[tidx].lock);
                }
-               nr_writes++;
-               if (unlikely(!test_duration_write()))
+               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());
-       tot_nr_writes[wtidx] = nr_writes;
+                       "writer", (unsigned long) pthread_self(),
+                       (unsigned long) gettid());
+       tot_nr_writes[wtidx] = URCU_TLS(nr_writes);
        return ((void*)2);
 }
 
@@ -279,7 +281,6 @@ int main(int argc, char **argv)
        int err;
        pthread_t *tid_reader, *tid_writer;
        void *tret;
-       unsigned long long *count_reader, *count_writer;
        unsigned long long tot_reads = 0, tot_writes = 0;
        int i, a;
 
@@ -287,7 +288,7 @@ int main(int argc, char **argv)
                show_usage(argc, argv);
                return -1;
        }
-       smp_mb();
+       cmm_smp_mb();
 
        err = sscanf(argv[1], "%u", &nr_readers);
        if (err != 1) {
@@ -361,15 +362,18 @@ int main(int argc, char **argv)
        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());
 
-       tid_reader = malloc(sizeof(*tid_reader) * nr_readers);
-       tid_writer = malloc(sizeof(*tid_writer) * nr_writers);
-       count_reader = malloc(sizeof(*count_reader) * nr_readers);
-       count_writer = malloc(sizeof(*count_writer) * nr_writers);
-       tot_nr_reads = malloc(sizeof(*tot_nr_reads) * nr_readers);
-       tot_nr_writes = malloc(sizeof(*tot_nr_writes) * nr_writers);
-       per_thread_lock = malloc(sizeof(*per_thread_lock) * nr_readers);
+       tid_reader = calloc(nr_readers, sizeof(*tid_reader));
+       tid_writer = calloc(nr_writers, sizeof(*tid_writer));
+       tot_nr_reads = calloc(nr_readers, sizeof(*tot_nr_reads));
+       tot_nr_writes = calloc(nr_writers, sizeof(*tot_nr_writes));
+       per_thread_lock = calloc(nr_readers, sizeof(*per_thread_lock));
+       for (i = 0; i < nr_readers; i++) {
+               err = pthread_mutex_init(&per_thread_lock[i].lock, NULL);
+               if (err != 0)
+                       exit(1);
+       }
 
        next_aff = 0;
 
@@ -386,7 +390,7 @@ int main(int argc, char **argv)
                        exit(1);
        }
 
-       smp_mb();
+       cmm_smp_mb();
 
        test_go = 1;
 
@@ -418,8 +422,6 @@ int main(int argc, char **argv)
 
        free(tid_reader);
        free(tid_writer);
-       free(count_reader);
-       free(count_writer);
        free(tot_nr_reads);
        free(tot_nr_writes);
        free(per_thread_lock);