use STL atomics

include/villas/queue.h

@@ -33,11 +33,12 @@
 
 #pragma once
 
+#include <atomic>
+
 #include <stddef.h>
 #include <stdint.h>
 #include <unistd.h>
 
-#include <villas/atomic.h>
 #include <villas/common.h>
 #include <villas/config.h>
 
@@ -47,13 +48,13 @@ struct memory_type;
 typedef char cacheline_pad_t[CACHELINE_SIZE];
 
 struct queue_cell {
-	atomic_size_t sequence;
+	std::atomic<size_t> sequence;
 	off_t data_off; /**< Pointer relative to the queue struct */
 };
 
 /** A lock-free multiple-producer, multiple-consumer (MPMC) queue. */
 struct queue {
-	atomic_state state;
+	std::atomic<enum state> state;
 
 	cacheline_pad_t _pad0;	/**< Shared area: all threads read */
 
@@ -62,11 +63,11 @@ struct queue {
 
 	cacheline_pad_t	_pad1;	/**< Producer area: only producers read & write */
 
-	atomic_size_t	tail;	/**< Queue tail pointer */
+	std::atomic<size_t>	tail;	/**< Queue tail pointer */
 
 	cacheline_pad_t	_pad2;	/**< Consumer area: only consumers read & write */
 
-	atomic_size_t	head;	/**< Queue head pointer */
+	std::atomic<size_t>	head;	/**< Queue head pointer */
 
 	cacheline_pad_t	_pad3;	/**< @todo Why needed? */
 };

include/villas/sample.h

@@ -23,12 +23,13 @@
 
 #pragma once
 
+#include <atomic>
+
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <time.h>
 
-#include <villas/atomic.h>
 #include <villas/signal.h>
 
 /* Forward declarations */
@@ -67,7 +68,7 @@ struct sample {
 
 	struct vlist *signals;	/**< The list of signal descriptors. */
 
-	atomic_int refcnt;	/**< Reference counter. */
+	std::atomic<int> refcnt;	/**< Reference counter. */
 	ptrdiff_t pool_off;	/**< This sample belongs to this memory pool (relative pointer). See sample_pool(). */
 
 	/** All timestamps are seconds / nano seconds after 1.1.1970 UTC */

include/villas/shmem.h

@@ -63,7 +63,7 @@ struct shmem_dir {
 /** Main structure representing the shared memory interface. */
 struct shmem_int {
 	struct shmem_dir read, write;
-	atomic_int readers, writers, closed;
+	std::atomic<int> readers, writers, closed;
 };
 
 /** Open the shared memory objects and retrieve / initialize the shared data structures.

include/villas/signal.h

@@ -23,6 +23,8 @@
 
 #pragma once
 
+#include <atomic>
+
 #include <jansson.h>
 #include <complex.h>
 #include <stdint.h>
@@ -31,8 +33,6 @@
 /* "I" defined by complex.h collides with a define in OpenSSL */
 #undef I
 
-#include <villas/atomic.h>
-
 /* Forward declarations */
 struct vlist;
 struct node;
@@ -69,7 +69,7 @@ struct signal {
 
 	int enabled;
 
-	atomic_int refcnt;	/**< Reference counter. */
+	std::atomic<int> refcnt;	/**< Reference counter. */
 
 	enum signal_type type;
 };