[dpdk-dev] [PATCH v2 1/3] eal: fix keep alive header for C++

2016-02-16 Thread Remy Horton

Suspect this will introduce an extra indirection and call/return into 
the generated code, but can't think of any alternative that doesn't 
potentially break source compatibility..


On 16/02/2016 07:14, Thomas Monjalon wrote:
> When built in a C++ application, the keepalive include fails:
>
> rte_keepalive.h:142:41: error: ?ALIVE? was not declared in this scope
>keepcfg->state_flags[rte_lcore_id()] = ALIVE;
>   ^
> C++ requires to use a scope operator to access an enum inside a struct.
> There was also a namespace issue for the values (no RTE prefix).
> The solution is to move the struct and related code out of the header file.
>
> Fixes: 75583b0d1efd ("eal: add keep alive monitoring")
>
> Signed-off-by: Thomas Monjalon 

Acked-by: Remy Horton 


[dpdk-dev] [PATCH v2 1/3] eal: fix keep alive header for C++

2016-02-16 Thread Thomas Monjalon
When built in a C++ application, the keepalive include fails:

rte_keepalive.h:142:41: error: ?ALIVE? was not declared in this scope
  keepcfg->state_flags[rte_lcore_id()] = ALIVE;
 ^
C++ requires to use a scope operator to access an enum inside a struct.
There was also a namespace issue for the values (no RTE prefix).
The solution is to move the struct and related code out of the header file.

Fixes: 75583b0d1efd ("eal: add keep alive monitoring")

Signed-off-by: Thomas Monjalon 
---
 lib/librte_eal/common/include/rte_keepalive.h | 37 +++---
 lib/librte_eal/common/rte_keepalive.c | 38 +++
 2 files changed, 41 insertions(+), 34 deletions(-)

v2:
- move keep-alive struct out of header
- uninline mark_alive function

diff --git a/lib/librte_eal/common/include/rte_keepalive.h 
b/lib/librte_eal/common/include/rte_keepalive.h
index 02472c0..f4cec04 100644
--- a/lib/librte_eal/common/include/rte_keepalive.h
+++ b/lib/librte_eal/common/include/rte_keepalive.h
@@ -64,35 +64,7 @@ typedef void (*rte_keepalive_failure_callback_t)(
  * Keepalive state structure.
  * @internal
  */
-struct rte_keepalive {
-   /** Core Liveness. */
-   enum {
-   ALIVE = 1,
-   MISSING = 0,
-   DEAD = 2,
-   GONE = 3
-   } __rte_cache_aligned state_flags[RTE_KEEPALIVE_MAXCORES];
-
-   /** Last-seen-alive timestamps */
-   uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
-
-   /**
-* Cores to check.
-* Indexed by core id, non-zero if the core should be checked.
-*/
-   uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
-
-   /** Dead core handler. */
-   rte_keepalive_failure_callback_t callback;
-
-   /**
-* Dead core handler app data.
-* Pointer is passed to dead core handler.
-*/
-   void *callback_data;
-   uint64_t tsc_initial;
-   uint64_t tsc_mhz;
-};
+struct rte_keepalive;


 /**
@@ -136,11 +108,8 @@ void rte_keepalive_register_core(struct rte_keepalive 
*keepcfg,
  * This function needs to be called from within the main process loop of
  * the LCore to be checked.
  */
-static inline void
-rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
-{
-   keepcfg->state_flags[rte_lcore_id()] = ALIVE;
-}
+void
+rte_keepalive_mark_alive(struct rte_keepalive *keepcfg);


 #endif /* _KEEPALIVE_H_ */
diff --git a/lib/librte_eal/common/rte_keepalive.c 
b/lib/librte_eal/common/rte_keepalive.c
index 736fd0f..bd1f16b 100644
--- a/lib/librte_eal/common/rte_keepalive.c
+++ b/lib/librte_eal/common/rte_keepalive.c
@@ -39,6 +39,37 @@
 #include 
 #include 

+struct rte_keepalive {
+   /** Core Liveness. */
+   enum rte_keepalive_state {
+   ALIVE = 1,
+   MISSING = 0,
+   DEAD = 2,
+   GONE = 3
+   } __rte_cache_aligned state_flags[RTE_KEEPALIVE_MAXCORES];
+
+   /** Last-seen-alive timestamps */
+   uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
+
+   /**
+* Cores to check.
+* Indexed by core id, non-zero if the core should be checked.
+*/
+   uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
+
+   /** Dead core handler. */
+   rte_keepalive_failure_callback_t callback;
+
+   /**
+* Dead core handler app data.
+* Pointer is passed to dead core handler.
+*/
+   void *callback_data;
+   uint64_t tsc_initial;
+   uint64_t tsc_mhz;
+};
+
+
 static void
 print_trace(const char *msg, struct rte_keepalive *keepcfg, int idx_core)
 {
@@ -111,3 +142,10 @@ rte_keepalive_register_core(struct rte_keepalive *keepcfg, 
const int id_core)
if (id_core < RTE_KEEPALIVE_MAXCORES)
keepcfg->active_cores[id_core] = 1;
 }
+
+
+void
+rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
+{
+   keepcfg->state_flags[rte_lcore_id()] = ALIVE;
+}
-- 
2.7.0