examples/performance-thread: support C++

Lthread is awesome but it doesn't support C++.
So I write patch to support lthread to support C++.
Added "extern C {}" to lthread-headers

Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>

examples/performance-thread/common/arch/x86/ctx.h

@@ -35,6 +35,10 @@
 #ifndef CTX_H
 #define CTX_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*
  * CPU context registers
  */
@@ -54,4 +58,8 @@ void
 ctx_switch(struct ctx *new_ctx, struct ctx *curr_ctx);
 
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* RTE_CTX_H_ */

examples/performance-thread/common/lthread.h

@@ -62,6 +62,10 @@
 #ifndef LTHREAD_H_
 #define LTHREAD_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <rte_per_lcore.h>
 
 #include "lthread_api.h"
@@ -96,4 +100,8 @@ _lthread_init(struct lthread *lt,
 
 void _lthread_set_stack(struct lthread *lt, void *stack, size_t stack_size);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_H_ */

examples/performance-thread/common/lthread_api.h

@@ -124,6 +124,10 @@
 #ifndef LTHREAD_H
 #define LTHREAD_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <sys/socket.h>
 #include <fcntl.h>
@@ -829,4 +833,8 @@ int lthread_cond_signal(struct lthread_cond *c);
   */
 int lthread_cond_broadcast(struct lthread_cond *c);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_H */

examples/performance-thread/common/lthread_cond.h

@@ -62,6 +62,10 @@
 #ifndef LTHREAD_COND_H_
 #define LTHREAD_COND_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "lthread_queue.h"
 
 #define MAX_COND_NAME_SIZE 64
@@ -74,4 +78,8 @@ struct lthread_cond {
 	uint64_t diag_ref;	/* optional ref to user diag data */
 } __rte_cache_aligned;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_COND_H_ */

examples/performance-thread/common/lthread_diag.h

@@ -34,6 +34,10 @@
 #ifndef LTHREAD_DIAG_H_
 #define LTHREAD_DIAG_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <inttypes.h>
 
@@ -129,4 +133,9 @@ extern uint64_t diag_mask;
 #define DIAG_USED __rte_unused
 
 #endif				/* LTHREAD_DIAG */
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_DIAG_H_ */

examples/performance-thread/common/lthread_diag_api.h

@@ -33,6 +33,10 @@
 #ifndef LTHREAD_DIAG_API_H_
 #define LTHREAD_DIAG_API_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <inttypes.h>
 
@@ -322,4 +326,8 @@ lthread_cond_diag_ref(struct lthread_cond *c);
 uint64_t
 lthread_mutex_diag_ref(struct lthread_mutex *m);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_DIAG_API_H_ */

examples/performance-thread/common/lthread_int.h

@@ -62,6 +62,10 @@
 #include <lthread_api.h>
 #define LTHREAD_INT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <sys/time.h>
 #include <sys/types.h>
@@ -197,4 +201,8 @@ struct lthread {
 	uint64_t diag_ref;			/* ref to user diag data */
 } __rte_cache_aligned;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif				/* LTHREAD_INT_H */

examples/performance-thread/common/lthread_mutex.h

@@ -35,6 +35,10 @@
 #ifndef LTHREAD_MUTEX_H_
 #define LTHREAD_MUTEX_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "lthread_queue.h"
 
 
@@ -49,4 +53,8 @@ struct lthread_mutex {
 	uint64_t		diag_ref; /* optional ref to user diag data */
 } __rte_cache_aligned;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LTHREAD_MUTEX_H_ */

examples/performance-thread/common/lthread_objcache.h

@@ -33,6 +33,10 @@
 #ifndef LTHREAD_OBJCACHE_H_
 #define LTHREAD_OBJCACHE_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <string.h>
 
 #include <rte_per_lcore.h>
@@ -154,5 +158,8 @@ _lthread_objcache_free(struct lthread_objcache *c, void *obj)
 }
 
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif				/* LTHREAD_OBJCACHE_H_ */

examples/performance-thread/common/lthread_pool.h

@@ -69,6 +69,10 @@
 #ifndef LTHREAD_POOL_H_
 #define LTHREAD_POOL_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <rte_malloc.h>
 #include <rte_per_lcore.h>
 #include <rte_log.h>
@@ -328,5 +332,8 @@ _qnode_pool_destroy(struct qnode_pool *p)
 	return 0;
 }
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif				/* LTHREAD_POOL_H_ */

examples/performance-thread/common/lthread_queue.h

@@ -69,6 +69,10 @@
 #ifndef LTHREAD_QUEUE_H_
 #define LTHREAD_QUEUE_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <string.h>
 
 #include <rte_prefetch.h>
@@ -298,5 +302,8 @@ _lthread_queue_remove(struct lthread_queue *q)
 	return NULL;
 }
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif				/* LTHREAD_QUEUE_H_ */

examples/performance-thread/common/lthread_sched.h

@@ -62,6 +62,10 @@
 #ifndef LTHREAD_SCHED_H_
 #define LTHREAD_SCHED_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "lthread_int.h"
 #include "lthread_queue.h"
 #include "lthread_objcache.h"
@@ -148,5 +152,8 @@ extern struct lthread_sched *schedcore[];
 void _sched_timer_cb(struct rte_timer *tim, void *arg);
 void _sched_shutdown(__rte_unused void *arg);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif				/* LTHREAD_SCHED_H_ */

examples/performance-thread/common/lthread_timer.h

@@ -35,6 +35,10 @@
 #ifndef LTHREAD_TIMER_H_
 #define LTHREAD_TIMER_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "lthread_int.h"
 #include "lthread_sched.h"
 
@@ -75,5 +79,8 @@ _timer_stop(struct lthread *lt)
 	}
 }
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* LTHREAD_TIMER_H_ */

examples/performance-thread/common/lthread_tls.h

@@ -34,6 +34,10 @@
 #ifndef LTHREAD_TLS_H_
 #define LTHREAD_TLS_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "lthread_api.h"
 
 #define RTE_PER_LTHREAD_SECTION_SIZE \
@@ -53,5 +57,8 @@ void _lthread_tls_destroy(struct lthread *lt);
 void _lthread_key_pool_init(void);
 void _lthread_tls_alloc(struct lthread *lt);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif				/* LTHREAD_TLS_H_ */