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authorNick Mathewson <nickm@torproject.org>2018-08-08 15:50:29 -0400
committerNick Mathewson <nickm@torproject.org>2018-08-08 15:50:29 -0400
commit26f1167e7151791a04a2c8584360f37602320779 (patch)
tree0eb3173a5cba9213b7db0ee35ae0917e1489391b /src/lib/thread
parent7787150521fda0370331dab80d043294e05e1598 (diff)
parentb66386865e68d8df0f228187781fcd5bc2dbf184 (diff)
downloadtor-26f1167e7151791a04a2c8584360f37602320779.tar.gz
tor-26f1167e7151791a04a2c8584360f37602320779.zip
Merge branch 'bug26779_033' into bug26779_035
Diffstat (limited to 'src/lib/thread')
-rw-r--r--src/lib/thread/compat_threads.c4
-rw-r--r--src/lib/thread/threads.h18
2 files changed, 13 insertions, 9 deletions
diff --git a/src/lib/thread/compat_threads.c b/src/lib/thread/compat_threads.c
index 24129946b2..7f1970af45 100644
--- a/src/lib/thread/compat_threads.c
+++ b/src/lib/thread/compat_threads.c
@@ -57,7 +57,7 @@ in_main_thread(void)
return main_thread_id == tor_get_thread_id();
}
-#ifndef HAVE_STDATOMIC_H
+#ifndef HAVE_WORKING_STDATOMIC
/** Initialize a new atomic counter with the value 0 */
void
atomic_counter_init(atomic_counter_t *counter)
@@ -108,4 +108,4 @@ atomic_counter_exchange(atomic_counter_t *counter, size_t newval)
tor_mutex_release(&counter->mutex);
return oldval;
}
-#endif /* !defined(HAVE_STDATOMIC_H) */
+#endif /* !defined(HAVE_WORKING_STDATOMIC) */
diff --git a/src/lib/thread/threads.h b/src/lib/thread/threads.h
index 89d2a9d93e..4d5191124c 100644
--- a/src/lib/thread/threads.h
+++ b/src/lib/thread/threads.h
@@ -16,7 +16,11 @@
#include "lib/testsupport/testsupport.h"
#include "lib/lock/compat_mutex.h"
-#ifdef HAVE_STDATOMIC_H
+#if defined(HAVE_STDATOMIC_H) && defined(STDATOMIC_WORKS)
+#define HAVE_WORKING_STDATOMIC
+#endif
+
+#ifdef HAVE_WORKING_STDATOMIC
#include <stdatomic.h>
#endif
@@ -98,18 +102,18 @@ void tor_threadlocal_set(tor_threadlocal_t *threadlocal, void *value);
/**
* Atomic counter type; holds a size_t value.
*/
-#ifdef HAVE_STDATOMIC_H
+#ifdef HAVE_WORKING_STDATOMIC
typedef struct atomic_counter_t {
atomic_size_t val;
} atomic_counter_t;
#define ATOMIC_LINKAGE static
-#else /* !(defined(HAVE_STDATOMIC_H)) */
+#else /* !(defined(HAVE_WORKING_STDATOMIC)) */
typedef struct atomic_counter_t {
tor_mutex_t mutex;
size_t val;
} atomic_counter_t;
#define ATOMIC_LINKAGE
-#endif /* defined(HAVE_STDATOMIC_H) */
+#endif /* defined(HAVE_WORKING_STDATOMIC) */
ATOMIC_LINKAGE void atomic_counter_init(atomic_counter_t *counter);
ATOMIC_LINKAGE void atomic_counter_destroy(atomic_counter_t *counter);
@@ -120,7 +124,7 @@ ATOMIC_LINKAGE size_t atomic_counter_exchange(atomic_counter_t *counter,
size_t newval);
#undef ATOMIC_LINKAGE
-#ifdef HAVE_STDATOMIC_H
+#ifdef HAVE_WORKING_STDATOMIC
/** Initialize a new atomic counter with the value 0 */
static inline void
atomic_counter_init(atomic_counter_t *counter)
@@ -158,7 +162,7 @@ atomic_counter_exchange(atomic_counter_t *counter, size_t newval)
return atomic_exchange(&counter->val, newval);
}
-#else /* !(defined(HAVE_STDATOMIC_H)) */
-#endif /* defined(HAVE_STDATOMIC_H) */
+#else /* !(defined(HAVE_WORKING_STDATOMIC)) */
+#endif /* defined(HAVE_WORKING_STDATOMIC) */
#endif /* !defined(TOR_COMPAT_THREADS_H) */