lnet/include/libcfs/winnt/libcfs.h

   1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=4:tabstop=4:
   3  *
   4  * Copyright (C) 2004 Cluster File Systems, Inc.
   5  *
   6  * This file is part of Lustre, http://www.lustre.org.
   7  *
   8  * Lustre is free software; you can redistribute it and/or modify it under the
   9  * terms of version 2 of the GNU General Public License as published by the
  10  * Free Software Foundation.
  11  *
  12  * Lustre is distributed in the hope that it will be useful, but WITHOUT ANY
  13  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  14  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  15  * details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with Lustre; if not, write to the Free Software Foundation, Inc., 675 Mass
  19  * Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __LIBCFS_WINNT_LIBCFS_H__
  24 #define __LIBCFS_WINNT_LIBCFS_H__
  25
  26 #ifndef __LIBCFS_LIBCFS_H__
  27 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
  28 #endif
  29
  30 /* workgroud for VC compiler */
  31 #ifndef __FUNCTION__
  32 #define __FUNCTION__ "generic"
  33 #endif
  34
  35 #include <libcfs/winnt/winnt-types.h>
  36 #include <libcfs/portals_utils.h>
  37 #include <libcfs/winnt/winnt-time.h>
  38 #include <libcfs/winnt/winnt-lock.h>
  39 #include <libcfs/winnt/winnt-mem.h>
  40 #include <libcfs/winnt/winnt-prim.h>
  41 #include <libcfs/winnt/winnt-fs.h>
  42 #include <libcfs/winnt/winnt-tcpip.h>
  43
  44 struct ptldebug_header {
  45         __u32 ph_len;
  46         __u32 ph_flags;
  47         __u32 ph_subsys;
  48         __u32 ph_mask;
  49         __u32 ph_cpu_id;
  50         __u32 ph_sec;
  51         __u64 ph_usec;
  52         __u32 ph_stack;
  53         __u32 ph_pid;
  54         __u32 ph_extern_pid;
  55         __u32 ph_line_num;
  56 } __attribute__((packed));
  57
  58 #ifdef __KERNEL__
  59
  60 enum {
  61         /* if you change this, update darwin-util.c:cfs_stack_trace_fill() */
  62         CFS_STACK_TRACE_DEPTH = 16
  63 };
  64
  65 struct cfs_stack_trace {
  66         void *frame[CFS_STACK_TRACE_DEPTH];
  67 };
  68
  69 static inline __u32 query_stack_size()
  70 {
  71     ULONG   LowLimit, HighLimit;
  72
  73     IoGetStackLimits(&LowLimit, &HighLimit);
  74     ASSERT(HighLimit > LowLimit);
  75
  76     return (__u32) (HighLimit - LowLimit);
  77 }
  78 #else
  79 static inline __u32 query_stack_size()
  80 {
  81    return 4096;
  82 }
  83 #endif
  84
  85
  86 #ifndef THREAD_SIZE
  87 # define THREAD_SIZE query_stack_size()
  88 #endif
  89
  90 #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
  91
  92 #ifdef __KERNEL__
  93 # ifdef  __ia64__
  94 #  define CDEBUG_STACK() (THREAD_SIZE -                         \
  95                           ((ulong_ptr)__builtin_dwarf_cfa() &   \
  96                            (THREAD_SIZE - 1)))
  97 # else
  98 #  define CDEBUG_STACK (IoGetRemainingStackSize())
  99 #  error "This doesn't seem right; CDEBUG_STACK should grow with the stack"
 100 # endif /* __ia64__ */
 101
 102 #define CHECK_STACK()                                                   \
 103 do {                                                                    \
 104         unsigned long _stack = CDEBUG_STACK();                          \
 105                                                                         \
 106         if (_stack > 3*THREAD_SIZE/4 && _stack > libcfs_stack) {        \
 107                 libcfs_stack = _stack;                                  \
 108                 libcfs_debug_msg(NULL, DEBUG_SUBSYSTEM, D_WARNING,      \
 109                                  __FILE__, NULL, __LINE__,              \
 110                                  "maximum lustre stack %lu\n", _stack); \
 111         }                                                               \
 112 } while (0)
 113 #else /* !__KERNEL__ */
 114 #define CHECK_STACK() do { } while(0)
 115 #define CDEBUG_STACK() (0L)
 116 #endif /* __KERNEL__ */
 117
 118 /* initial pid  */
 119 #define LUSTRE_LNET_PID          12345
 120
 121 #define ENTRY_NESTING_SUPPORT (0)
 122 #define ENTRY_NESTING   do {;} while (0)
 123 #define EXIT_NESTING   do {;} while (0)
 124 #define __current_nesting_level() (0)
 125
 126 #endif /* _WINNT_LIBCFS_H */