-/*
+/*
* 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 "mem.h"
#include "tls.h"
-DECLARE_THREAD_LOCAL(tid_, int);
-DECLARE_THREAD_LOCAL(rand_seed_, unsigned);
+DECLARE_THREAD_LOCAL(ThreadId, int);
+static int ThreadIndex
-typedef struct thread_info {
- int thread_id;
- void *(*start_routine)(void *);
- void *restrict arg;
-} thread_info_t;
+static int MaxThreadId = 0;
__attribute__ ((constructor)) void nbd_init (void) {
- //sranddev();
- INIT_THREAD_LOCAL(rand_seed_);
- INIT_THREAD_LOCAL(tid_);
- SET_THREAD_LOCAL(tid_, 0);
+ rnd_init();
mem_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);
- SET_THREAD_LOCAL(rand_seed_, tid_+1);
- lwt_thread_init(ti->thread_id);
- rcu_thread_init(ti->thread_id);
- void *ret = ti->start_routine(ti->arg);
- nbd_free(ti);
- return ret;
-}
+void nbd_thread_init (void) {
+ LOCALIZE_THREAD_LOCAL(ThreadId, int);
-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 *)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);
-}
+ if (ThreadId == 0) {
+ ++MaxThreadId; // TODO: reuse thread id's of threads that have been destroyed
+ ASSERT(MaxThreadId <= MAX_NUM_THREADS);
+ SET_THREAD_LOCAL(ThreadId, MaxThreadId);
+ rnd_thread_init();
+ }
-int nbd_rand (void) {
- LOCALIZE_THREAD_LOCAL(rand_seed_, unsigned);
- unsigned r = rand_r(&rand_seed_);
- SET_THREAD_LOCAL(rand_seed_, r);
- return r;
+ lwt_thread_init();
+ rcu_thread_init();
}