From 73ae1fce001253677b7ab633f42d3c3300fe5cf5 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 12 Jan 2010 23:03:04 +0100
Subject: [PATCH 09/31] once: make once related variables volatile

---
 src/pulsecore/flist.h        |    2 +-
 src/pulsecore/once.c         |    3 +--
 src/pulsecore/thread-posix.c |    8 ++------
 src/pulsecore/thread.h       |    2 +-
 4 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/src/pulsecore/flist.h b/src/pulsecore/flist.h
index e147486..184e599 100644
--- a/src/pulsecore/flist.h
+++ b/src/pulsecore/flist.h
@@ -45,7 +45,7 @@ void* pa_flist_pop(pa_flist*l);
 
 #define PA_STATIC_FLIST_DECLARE(name, size, free_cb)                    \
     static struct {                                                     \
-        pa_flist *flist;                                                \
+        pa_flist *volatile flist;                                       \
         pa_once once;                                                   \
     } name##_flist = { NULL, PA_ONCE_INIT };                            \
     static void name##_flist_init(void) {                               \
diff --git a/src/pulsecore/once.c b/src/pulsecore/once.c
index 05a3ad2..4e509e0 100644
--- a/src/pulsecore/once.c
+++ b/src/pulsecore/once.c
@@ -29,8 +29,6 @@
 #include "once.h"
 
 pa_bool_t pa_once_begin(pa_once *control) {
-    pa_mutex *m;
-
     pa_assert(control);
 
     if (pa_atomic_load(&control->done))
@@ -43,6 +41,7 @@ pa_bool_t pa_once_begin(pa_once *control) {
      * executed by us. Hence the awkward locking. */
 
     for (;;) {
+        pa_mutex *m;
 
         if ((m = pa_atomic_ptr_load(&control->mutex))) {
 
diff --git a/src/pulsecore/thread-posix.c b/src/pulsecore/thread-posix.c
index fdab270..bc0d6e3 100644
--- a/src/pulsecore/thread-posix.c
+++ b/src/pulsecore/thread-posix.c
@@ -80,11 +80,9 @@ pa_thread* pa_thread_new(pa_thread_func_t thread_func, void *userdata) {
 
     pa_assert(thread_func);
 
-    t = pa_xnew(pa_thread, 1);
+    t = pa_xnew0(pa_thread, 1);
     t->thread_func = thread_func;
     t->userdata = userdata;
-    t->joined = FALSE;
-    pa_atomic_store(&t->running, 0);
 
     if (pthread_create(&t->id, NULL, internal_thread_func, t) < 0) {
         pa_xfree(t);
@@ -135,10 +133,8 @@ pa_thread* pa_thread_self(void) {
     /* This is a foreign thread, let's create a pthread structure to
      * make sure that we can always return a sensible pointer */
 
-    t = pa_xnew(pa_thread, 1);
+    t = pa_xnew0(pa_thread, 1);
     t->id = pthread_self();
-    t->thread_func = NULL;
-    t->userdata = NULL;
     t->joined = TRUE;
     pa_atomic_store(&t->running, 2);
 
diff --git a/src/pulsecore/thread.h b/src/pulsecore/thread.h
index 25eace6..60c1267 100644
--- a/src/pulsecore/thread.h
+++ b/src/pulsecore/thread.h
@@ -55,7 +55,7 @@ void *pa_tls_set(pa_tls *t, void *userdata);
 #define PA_STATIC_TLS_DECLARE(name, free_cb)                            \
     static struct {                                                     \
         pa_once once;                                                   \
-        pa_tls *tls;                                                    \
+        pa_tls *volatile tls;                                           \
     } name##_tls = {                                                    \
         .once = PA_ONCE_INIT,                                           \
         .tls = NULL                                                     \
-- 
1.6.6