* Written by Josh Dybnis and released to the public domain, as explained at
* http://creativecommons.org/licenses/publicdomain
*/
+#define _POSIX_C_SOURCE 1 // for rand_r()
+#include <stdlib.h>
#include <pthread.h>
#include "common.h"
#include "runtime.h"
-#include "runtime_local.h"
+#include "rlocal.h"
#include "mem.h"
#include "tls.h"
-#undef malloc
-#undef free
-
DECLARE_THREAD_LOCAL(tid_, int);
+DECLARE_THREAD_LOCAL(rand_seed_, unsigned);
typedef struct thread_info {
int thread_id;
void *restrict arg;
} thread_info_t;
-void nbd_init (void) {
- INIT_THREAD_LOCAL(tid_, NULL);
+__attribute__ ((constructor)) void nbd_init (void) {
+ //sranddev();
+ INIT_THREAD_LOCAL(rand_seed_);
+ INIT_THREAD_LOCAL(tid_);
+ SET_THREAD_LOCAL(tid_, 0);
mem_init();
- lwt_init();
lwt_thread_init(0);
rcu_thread_init(0);
}
static void *worker (void *arg) {
thread_info_t *ti = (thread_info_t *)arg;
SET_THREAD_LOCAL(tid_, ti->thread_id);
+ LOCALIZE_THREAD_LOCAL(tid_, int);
+#ifndef NDEBUG
+ SET_THREAD_LOCAL(rand_seed_, tid_+1);
+#else
+ SET_THREAD_LOCAL(rand_seed_, nbd_rand_seed(tid_+1));
+#endif
lwt_thread_init(ti->thread_id);
rcu_thread_init(ti->thread_id);
void *ret = ti->start_routine(ti->arg);
- free(ti);
+ nbd_free(ti);
return ret;
}
int nbd_thread_create (pthread_t *restrict thread, int thread_id, void *(*start_routine)(void *), void *restrict arg) {
- thread_info_t *ti = (thread_info_t *)malloc(sizeof(thread_info_t));
+ thread_info_t *ti = (thread_info_t *)nbd_malloc(sizeof(thread_info_t));
ti->thread_id = thread_id;
ti->start_routine = start_routine;
ti->arg = arg;
return pthread_create(thread, NULL, worker, ti);
}
+
+int nbd_rand (void) {
+ LOCALIZE_THREAD_LOCAL(rand_seed_, unsigned);
+ unsigned r = rand_r(&rand_seed_);
+ SET_THREAD_LOCAL(rand_seed_, r);
+ return r;
+}
+
+uint64_t nbd_rand_seed (int i) {
+ return rdtsc() + -715159705 + i * 129;
+}
+
+// Fairly fast random numbers
+int nbd_next_rand (uint64_t *r) {
+ *r = (*r * 0x5DEECE66DLL + 0xBLL) & MASK(48);
+ return (*r >> 17) & 0x7FFFFFFF;
+}