diff mbox

[v3,4/4] api: thread: Added odp_thread_count

Message ID 1423130234-6305-4-git-send-email-petri.savolainen@linaro.org
State Accepted
Commit 4c89f3a905f8b03ab6e4fce71ad9d5556a8a9f2c
Headers show

Commit Message

Petri Savolainen Feb. 5, 2015, 9:57 a.m. UTC 
Improved thread id documentation and added odp_thread_count(),
which returns number of active threads.

Signed-off-by: Petri Savolainen <petri.savolainen@linaro.org>
---
 include/odp/api/thread.h            | 17 +++++++++++++++++
 platform/linux-generic/odp_thread.c |  4 ++++
 2 files changed, 21 insertions(+)
diff mbox

Patch

diff --git a/include/odp/api/thread.h b/include/odp/api/thread.h
index 844f45a..6b3b39b 100644
--- a/include/odp/api/thread.h
+++ b/include/odp/api/thread.h
@@ -25,11 +25,28 @@  extern "C" {
 /**
  * Get thread identifier
  *
+ * Returns the thread identifier of the current thread. Thread ids range from 0
+ * to ODP_CONFIG_MAX_THREADS-1. The ODP thread id is assinged by
+ * odp_init_local() and freed by odp_term_local(). Thread id is unique within
+ * the ODP instance.
+ *
  * @return Thread identifier of the current thread
  */
 int odp_thread_id(void);
 
 /**
+ * Thread count
+ *
+ * Returns the current ODP thread count. This is the number of active threads
+ * running the ODP instance. Each odp_init_local() call increments and each
+ * odp_term_local() call decrements the count. The count is always between 1 and
+ * ODP_CONFIG_MAX_THREADS.
+ *
+ * @return Current thread count
+ */
+int odp_thread_count(void);
+
+/**
  * @}
  */
 
diff --git a/platform/linux-generic/odp_thread.c b/platform/linux-generic/odp_thread.c
index ac8c9de..f6c900b 100644
--- a/platform/linux-generic/odp_thread.c
+++ b/platform/linux-generic/odp_thread.c
@@ -118,6 +118,10 @@  int odp_thread_id(void)
 	return this_thread->thr_id;
 }
 
+int odp_thread_count(void)
+{
+	return odp_atomic_load_u32(&thread_globals->num);
+}
 
 int odp_cpu_id(void)
 {