[1/2] eal: expose lcore pthread id
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Commit Message
From: Michael Pfeiffer <michael.pfeiffer@tu-ilmenau.de>
Also expose the pthread id of each lcore, in
order to allow modification of pthread attributes,
for example use rte_thread_setname without executing
pthread_self() on the maybe already running lcore.
The rte_lcore_to_thread_id function is added to API.
Signed-off-by: Michael Pfeiffer <michael.pfeiffer@tu-ilmenau.de>
---
lib/eal/common/eal_common_lcore.c | 9 +++++++++
lib/eal/include/rte_lcore.h | 14 ++++++++++++++
lib/eal/version.map | 1 +
3 files changed, 24 insertions(+)
@@ -114,6 +114,15 @@ rte_lcore_to_socket_id(unsigned int lcore_id)
return lcore_config[lcore_id].socket_id;
}
+int
+rte_lcore_to_thread_id(int lcore_id, pthread_t *thread_id) {
+ if (unlikely(lcore_id < 0 || lcore_id >= RTE_MAX_LCORE))
+ return -1;
+
+ *thread_id = lcore_config[lcore_id].thread_id;
+ return 0;
+}
+
static int
socket_id_cmp(const void *a, const void *b)
{
@@ -171,6 +171,20 @@ rte_lcore_to_socket_id(unsigned int lcore_id);
*/
int rte_lcore_to_cpu_id(int lcore_id);
+/**
+ * Get the ID of the thread of the specified lcore
+ *
+ * @param lcore_id
+ * the targeted lcore, which MUST be between 0 and RTE_MAX_LCORE-1.
+ * @param thread_id
+ * the thread id is returned in this argument if lcore_id is in range
+ * @return
+ * 0 on success, or -1 if out of range
+ */
+__rte_experimental
+int
+rte_lcore_to_thread_id(int lcore_id, pthread_t *thread_id);
+
#ifdef RTE_HAS_CPUSET
/**
@@ -440,6 +440,7 @@ EXPERIMENTAL {
rte_thread_detach;
rte_thread_equal;
rte_thread_join;
+ rte_lcore_to_thread_id;
};
INTERNAL {