libkern/os/firehose.h

   1 /*
   2  * Copyright (c) 2015 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef __firehose_h
  25 #define __firehose_h
  26
  27 __BEGIN_DECLS
  28
  29 /*!
  30  * @function __firehose_buffer_push_to_logd
  31  *
  32  * @abstract
  33  * Called by the dispatch firehose apis to notify logd that a chunk is available
  34  */
  35 __WATCHOS_AVAILABLE(3.0) __OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0)
  36 void __firehose_buffer_push_to_logd(firehose_buffer_t fb, bool for_io);
  37
  38 /*!
  39  * @function __firehose_allocate
  40  *
  41  * @abstract
  42  * Wrapper to allocate kernel memory
  43  */
  44 __WATCHOS_AVAILABLE(3.0) __OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0)
  45 void __firehose_allocate(vm_offset_t *addr, vm_size_t size);
  46
  47 /*!
  48  * @function __firehose_critical_region_enter
  49  *
  50  * @abstract
  51  * Function that disables preemption
  52  */
  53 __WATCHOS_AVAILABLE(3.0) __OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0)
  54 extern void __firehose_critical_region_enter(void);
  55
  56 /*!
  57  * @function __firehose_critical_region_leave
  58  *
  59  * @abstract
  60  * Function that enables preemption
  61  */
  62 __WATCHOS_AVAILABLE(3.0) __OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0)
  63 extern void __firehose_critical_region_leave(void);
  64
  65 extern void oslogwakeup(void);
  66
  67 __END_DECLS
  68
  69 #endif /* __firehose_h */