work in progress

[nbds] / runtime / runtime.c

diff --git a/runtime/runtime.c b/runtime/runtime.c
index ceb67729f79ba7e7518736cf9d6812607630520f..19024e2f389f237ecbd6f0e2edf906b0b198a1d2 100644 (file)
--- a/runtime/runtime.c
+++ b/runtime/runtime.c
@@ -1,8 +1,7 @@
-/* 
+/*
  * 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"
@@ -11,48 +10,26 @@
 #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();
 }