Merge branch 'perfmon'

1 files changed, 30 insertions, 1 deletions

diff --git a/kern/thread.h b/kern/thread.h
index 6e696fc7..5b5729ce 100644
--- a/kern/thread.h
+++ b/kern/thread.h
@@ -75,6 +75,13 @@ struct thread_sched_data {
 #define THREAD_KERNEL_PREFIX KERNEL_NAME "_"
 
 /*
+ * Thread states.
+ */
+#define THREAD_RUNNING  0
+#define THREAD_SLEEPING 1
+#define THREAD_DEAD     2
+
+/*
  * Scheduling policies.
  *
  * The idle policy is reserved for the per-CPU idle threads.
@@ -323,7 +330,7 @@ thread_wchan_desc(const struct thread *thread)
 /*
  * Return a character representation of the state of a thread.
  */
-char thread_state_to_chr(const struct thread *thread);
+char thread_state_to_chr(unsigned int state);
 
 static inline const struct thread_sched_data *
 thread_get_user_sched_data(const struct thread *thread)
@@ -705,6 +712,28 @@ thread_get_specific(unsigned int key)
     return thread_tsd_get(thread_self(), key);
 }
 
+#ifdef CONFIG_PERFMON
+static inline struct perfmon_td *
+thread_get_perfmon_td(struct thread *thread)
+{
+    return &thread->perfmon_td;
+}
+#endif /* CONFIG_PERFMON */
+
+/*
+ * Return the last CPU on which the thread has been scheduled.
+ *
+ * This call isn't synchronized, and the caller may obtain an outdated value.
+ */
+unsigned int thread_cpu(const struct thread *thread);
+
+/*
+ * Return the current state of the given thread.
+ *
+ * This call isn't synchronized, and the caller may obtain an outdated value.
+ */
+unsigned int thread_state(const struct thread *thread);
+
 /*
  * Return true if the given thread is running.
  *