xnu-201.19.tar.gz

[apple/xnu.git] / osfmk / mach / thread_policy.h

diff --git a/osfmk/mach/thread_policy.h b/osfmk/mach/thread_policy.h
index 3f2e29cad9b3a6948b44a2b54a9f2ef6b02153fd..143081614bf54dedfce18ff8a76eee8f404aa4ca 100644 (file)
--- a/osfmk/mach/thread_policy.h
+++ b/osfmk/mach/thread_policy.h
@@ -77,9 +77,10 @@ kern_return_t        thread_policy_get(
 /*
  * THREAD_STANDARD_POLICY:
  *
- * This is the standard [fair] scheduling mode, assigned to new
- * threads.  Specifying it explicitly is not typically required,
- * but may be used to return a thread to the default mode setting.
+ * This is the standard (fair) scheduling mode, assigned to new
+ * threads.  The thread will be given processor time in a manner
+ * which apportions approximately equal share to long running
+ * computations.
  *
  * Parameters:
  *     [none]
@@ -88,14 +89,37 @@ kern_return_t       thread_policy_get(
 #define THREAD_STANDARD_POLICY                 1
 
 struct thread_standard_policy {
-       /* no data */
+       natural_t               no_data;
 };
 
 typedef struct thread_standard_policy  thread_standard_policy_data_t;
 typedef struct thread_standard_policy  *thread_standard_policy_t;
 
-#define THREAD_STANDARD_POLICY_COUNT   \
-       (sizeof (thread_standard_policy_data_t) / sizeof (integer_t))
+#define THREAD_STANDARD_POLICY_COUNT   0
+
+/*
+ * THREAD_EXTENDED_POLICY:
+ *
+ * Extended form of THREAD_STANDARD_POLICY, which supplies a
+ * hint indicating whether this is a long running computation.
+ *
+ * Parameters:
+ *
+ * timeshare: TRUE (the default) results in identical scheduling
+ * behavior as THREAD_STANDARD_POLICY.
+ */
+
+#define THREAD_EXTENDED_POLICY                 1
+
+struct thread_extended_policy {
+       boolean_t               timeshare;
+};
+
+typedef struct thread_extended_policy  thread_extended_policy_data_t;
+typedef struct thread_extended_policy  *thread_extended_policy_t;
+
+#define THREAD_EXTENDED_POLICY_COUNT   \
+       (sizeof (thread_extended_policy_data_t) / sizeof (integer_t))
 
 /*
  * THREAD_TIME_CONSTRAINT_POLICY:
@@ -127,9 +151,9 @@ typedef struct thread_standard_policy       *thread_standard_policy_t;
 #define THREAD_TIME_CONSTRAINT_POLICY  2
 
 struct thread_time_constraint_policy {
-       natural_t               period;
-       natural_t               computation;
-       natural_t               constraint;
+       uint32_t                period;
+       uint32_t                computation;
+       uint32_t                constraint;
        boolean_t               preemptible;
 };