xnu-2050.7.9.tar.gz

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

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+/*
+ * Copyright (c) 2011 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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@
+ */
+
+#ifndef __AP_CALLSTACK_H__
+#define __AP_CALLSTACK_H__
+
+#define MAX_CALLSTACK_FRAMES (128)
+
+#define CALLSTACK_VALID     (1<<0)
+#define CALLSTACK_DEFERRED  (1<<1)
+#define CALLSTACK_64BIT     (1<<2)
+#define CALLSTACK_KERNEL    (1<<3)
+#define CALLSTACK_TRUNCATED (1<<4)
+
+struct callstack
+{
+       uint32_t flags;
+       uint32_t nframes;
+       uint64_t frames[MAX_CALLSTACK_FRAMES];
+};
+
+struct kperf_context;
+
+extern void kperf_kcallstack_sample( struct callstack *cs, struct kperf_context * );
+extern void kperf_kcallstack_log( struct callstack *cs );
+
+extern void kperf_ucallstack_sample( struct callstack *cs, struct kperf_context * );
+extern int kperf_ucallstack_pend( struct kperf_context * );
+extern void kperf_ucallstack_log( struct callstack *cs );
+
+
+#endif /* __AP_CALLSTACK_H__ */