eal: get unique thread id

[dpdk.git] / lib / librte_eal / common / include / rte_eal.h

diff --git a/lib/librte_eal/common/include/rte_eal.h b/lib/librte_eal/common/include/rte_eal.h
index f4ecd2e..b72606b 100644 (file)
--- a/lib/librte_eal/common/include/rte_eal.h
+++ b/lib/librte_eal/common/include/rte_eal.h
@@ -41,6 +41,9 @@
  */
 
 #include <stdint.h>
+#include <sched.h>
+
+#include <rte_per_lcore.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -262,6 +265,30 @@ rte_set_application_usage_hook( rte_usage_hook_t usage_func );
  */
 int rte_eal_has_hugepages(void);
 
+/**
+ * A wrap API for syscall gettid.
+ *
+ * @return
+ *   On success, returns the thread ID of calling process.
+ *   It is always successful.
+ */
+int rte_sys_gettid(void);
+
+/**
+ * Get system unique thread id.
+ *
+ * @return
+ *   On success, returns the thread ID of calling process.
+ *   It is always successful.
+ */
+static inline int rte_gettid(void)
+{
+       static RTE_DEFINE_PER_LCORE(int, _thread_id) = -1;
+       if (RTE_PER_LCORE(_thread_id) == -1)
+               RTE_PER_LCORE(_thread_id) = rte_sys_gettid();
+       return RTE_PER_LCORE(_thread_id);
+}
+
 #ifdef __cplusplus
 }
 #endif