xnu-7195.101.1.tar.gz

[apple/xnu.git] / osfmk / kperf / ast.h

diff --git a/osfmk/kperf/ast.h b/osfmk/kperf/ast.h
index 65d5044bc6054b86e7df0795060310803494365b..f5b19d50825f9d03ea4039a01a5291e2e50df9d1 100644 (file)
--- a/osfmk/kperf/ast.h
+++ b/osfmk/kperf/ast.h
@@ -1,8 +1,8 @@
 /*
- * Copyright (c) 2011 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2011-2019 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- * 
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
- * 
+ *
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -22,10 +22,17 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
+ *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
-/* pend ast bits on a thread */
-extern int kperf_ast_pend(thread_t thread, uint32_t flags);
-extern void kperf_ast_set_callstack_depth(thread_t thread, uint32_t depth);
+/*
+ * Ensure that kperf is informed the next time this thread goes back to user
+ * space, to handle an action.
+ */
+int kperf_ast_pend(thread_t thread, uint32_t flags, unsigned int actionid);
+
+/*
+ * Set the depth for the user callstack sample.
+ */
+void kperf_ast_set_callstack_depth(thread_t thread, uint32_t depth);