FreeBSD/Linux Kernel Cross Reference
sys/sys/dtrace_bsd.h

     /*-
      * Copyright (c) 2007-2008 John Birrell (jb@freebsd.org)
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     *
     * This file contains BSD shims for Sun's DTrace code.
     */
    
    #ifndef _SYS_DTRACE_BSD_H
    #define _SYS_DTRACE_BSD_H
    
    /* Forward definitions: */
    struct mbuf;
    struct trapframe;
    struct thread;
    struct vattr;
    struct vnode;
    struct reg;
    
    /*
     * Cyclic clock function type definition used to hook the cyclic
     * subsystem into the appropriate timer interrupt.
     */
    typedef void (*cyclic_clock_func_t)(struct trapframe *);
    
    /*
     * These external variables are actually machine-dependent, so
     * they might not actually exist.
     *
     * Defining them here avoids a proliferation of header files.
     */
    extern cyclic_clock_func_t     cyclic_clock_func[];
    
    /*
     * The dtrace module handles traps that occur during a DTrace probe.
     * This type definition is used in the trap handler to provide a
     * hook for the dtrace module to register it's handler with.
     */
    typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
    
    int     dtrace_trap(struct trapframe *, u_int);
    
    extern dtrace_trap_func_t       dtrace_trap_func;
    
    /* Used by the machine dependent trap() code. */
    typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t);
    typedef void (*dtrace_doubletrap_func_t)(void);
    
    /* Global variables in trap.c */
    extern  dtrace_invop_func_t     dtrace_invop_func;
    extern  dtrace_doubletrap_func_t        dtrace_doubletrap_func;
    
    /* Pid provider hooks */
    typedef int (*dtrace_fasttrap_probe_ptr_t)(struct reg *);
    extern  dtrace_fasttrap_probe_ptr_t     dtrace_fasttrap_probe_ptr;
    typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
    extern  dtrace_pid_probe_ptr_t  dtrace_pid_probe_ptr;
    typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
    extern  dtrace_return_probe_ptr_t       dtrace_return_probe_ptr;
    
    /* Virtual time hook function type. */
    typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
    
    extern int                      dtrace_vtime_active;
    extern dtrace_vtime_switch_func_t       dtrace_vtime_switch_func;
    
    /* The fasttrap module hooks into the fork, exit and exit. */
    typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
    typedef void (*dtrace_execexit_func_t)(struct proc *);
    
    /* Global variable in kern_fork.c */
    extern dtrace_fork_func_t       dtrace_fasttrap_fork;
    
    /* Global variable in kern_exec.c */
    extern dtrace_execexit_func_t   dtrace_fasttrap_exec;
    
    /* Global variable in kern_exit.c */
   extern dtrace_execexit_func_t   dtrace_fasttrap_exit;
   
   /* The dtmalloc provider hooks into malloc. */
   typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
       uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
   
   extern dtrace_malloc_probe_func_t   dtrace_malloc_probe;
   
   /* dtnfsclient NFSv3 access cache provider hooks. */
   typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
       struct vnode *);
   extern dtrace_nfsclient_accesscache_flush_probe_func_t
       dtrace_nfsclient_accesscache_flush_done_probe;
   
   typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
       struct vnode *, uid_t, uint32_t);
   extern dtrace_nfsclient_accesscache_get_probe_func_t
       dtrace_nfsclient_accesscache_get_hit_probe,
       dtrace_nfsclient_accesscache_get_miss_probe;
   
   typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
       struct vnode *, uid_t, uint32_t, int);
   extern dtrace_nfsclient_accesscache_load_probe_func_t
       dtrace_nfsclient_accesscache_load_done_probe;
   
   /* dtnfsclient NFSv[23] attribute cache provider hooks. */
   typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
       struct vnode *);
   extern dtrace_nfsclient_attrcache_flush_probe_func_t
       dtrace_nfsclient_attrcache_flush_done_probe;
   
   typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
       struct vnode *, struct vattr *);
   extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
       dtrace_nfsclient_attrcache_get_hit_probe;
   
   typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
       struct vnode *);
   extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
       dtrace_nfsclient_attrcache_get_miss_probe;
   
   typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
       struct vnode *, struct vattr *, int);
   extern dtrace_nfsclient_attrcache_load_probe_func_t
       dtrace_nfsclient_attrcache_load_done_probe;
   
   /* dtnfsclient NFSv[23] RPC provider hooks. */
   typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
       struct vnode *, struct mbuf *, struct ucred *, int);
   extern dtrace_nfsclient_nfs23_start_probe_func_t
       dtrace_nfsclient_nfs23_start_probe;
   
   typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
       struct vnode *, struct mbuf *, struct ucred *, int, int);
   extern dtrace_nfsclient_nfs23_done_probe_func_t
       dtrace_nfsclient_nfs23_done_probe;
   
   /*
    * Functions which allow the dtrace module to check that the kernel 
    * hooks have been compiled with sufficient space for it's private
    * structures.
    */
   size_t  kdtrace_proc_size(void);
   size_t  kdtrace_thread_size(void);
   
   /*
    * OpenSolaris compatible time functions returning nanoseconds.
    * On OpenSolaris these return hrtime_t which we define as uint64_t.
    */
   uint64_t        dtrace_gethrtime(void);
   uint64_t        dtrace_gethrestime(void);
   
   #endif /* _SYS_DTRACE_BSD_H */

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