[PATCH v2 3/6] eal: add basic rte thread ID equal API

[Tyler Retzlaff]

Add rte_thread_equal() that tests if two rte_thread_id are equal.

Signed-off-by: Narcisa Vasile <navas...@microsoft.com>
Signed-off-by: Tyler Retzlaff <roret...@linux.microsoft.com>
Acked-by: Chengwen Feng <fengcheng...@huawei.com>
---
 lib/eal/include/rte_thread.h | 19 +++++++++++++++++++
 lib/eal/unix/rte_thread.c    |  6 ++++++
 lib/eal/version.map          |  1 +
 lib/eal/windows/rte_thread.c |  6 ++++++
 4 files changed, 32 insertions(+)

diff --git a/lib/eal/include/rte_thread.h b/lib/eal/include/rte_thread.h
index c27e580..de0486d 100644
--- a/lib/eal/include/rte_thread.h
+++ b/lib/eal/include/rte_thread.h
@@ -134,6 +134,25 @@ int rte_thread_create(rte_thread_t *thread_id,
 __rte_experimental
 rte_thread_t rte_thread_self(void);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Check if 2 thread ids are equal.
+ *
+ * @param t1
+ *   First thread id.
+ *
+ * @param t2
+ *   Second thread id.
+ *
+ * @return
+ *   If the ids are equal, return nonzero.
+ *   Otherwise, return 0.
+ */
+__rte_experimental
+int rte_thread_equal(rte_thread_t t1, rte_thread_t t2);
+
 #ifdef RTE_HAS_CPUSET
 
 /**
diff --git a/lib/eal/unix/rte_thread.c b/lib/eal/unix/rte_thread.c
index 19c7b80..0304d53 100644
--- a/lib/eal/unix/rte_thread.c
+++ b/lib/eal/unix/rte_thread.c
@@ -183,6 +183,12 @@ struct eal_tls_key {
        return pthread_detach((pthread_t)thread_id.opaque_id);
 }
 
+int
+rte_thread_equal(rte_thread_t t1, rte_thread_t t2)
+{
+       return pthread_equal((pthread_t)t1.opaque_id, (pthread_t)t2.opaque_id);
+}
+
 rte_thread_t
 rte_thread_self(void)
 {
diff --git a/lib/eal/version.map b/lib/eal/version.map
index 22e5c85..4a52484 100644
--- a/lib/eal/version.map
+++ b/lib/eal/version.map
@@ -428,6 +428,7 @@ EXPERIMENTAL {
        rte_thread_attr_set_priority;
        rte_thread_create;
        rte_thread_detach;
+       rte_thread_equal;
        rte_thread_get_affinity_by_id;
        rte_thread_get_priority;
        rte_thread_join;
diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
index b5f2b04..1352513 100644
--- a/lib/eal/windows/rte_thread.c
+++ b/lib/eal/windows/rte_thread.c
@@ -291,6 +291,12 @@ struct thread_routine_ctx {
        return 0;
 }
 
+int
+rte_thread_equal(rte_thread_t t1, rte_thread_t t2)
+{
+       return t1.opaque_id == t2.opaque_id;
+}
+
 rte_thread_t
 rte_thread_self(void)
 {
-- 
1.8.3.1