kernel/debug.h

   1 #ifndef DEBUG_H
   2 #define DEBUG_H
   3
   4 /* This header file defines all debugging constants and macros, and declares
   5  * some variables. Certain debugging features redefine standard constants
   6  * and macros. Therefore, this header file should be included after the
   7  * other kernel headers.
   8  */
   9
  10 #include <ansi.h>
  11 #include <minix/debug.h>
  12 #include "config.h"
  13
  14 /* Enable prints such as
  15  *  . send/receive failed due to deadlock or dead source or dead destination
  16  *  . trap not allowed
  17  *  . bogus message pointer
  18  *  . kernel call number not allowed by this process
  19  *
  20  * Of course the call still fails, but nothing is printed if these warnings
  21  * are disabled.
  22  */
  23 #define DEBUG_ENABLE_IPC_WARNINGS       1
  24 #define DEBUG_STACKTRACE                1
  25 #define DEBUG_TIME_LOCKS                1
  26
  27 /* Runtime sanity checking. */
  28 #define DEBUG_VMASSERT                  0
  29 #define DEBUG_SCHED_CHECK               0
  30 #define DEBUG_STACK_CHECK               0
  31 #define DEBUG_TRACE                     0
  32
  33 #if DEBUG_TRACE
  34
  35 #define VF_SCHEDULING           (1L << 1)
  36 #define VF_PICKPROC             (1L << 2)
  37
  38 #define TRACE(code, statement) if(verboseflags & code) { printf("%s:%d: ", __FILE__, __LINE__); statement }
  39
  40 #else
  41 #define TRACE(code, statement)
  42 #endif
  43
  44 #define ENTERED         0xBA5E1514
  45 #define NOTENTERED      0x1415BEE1
  46
  47 #define NOREC_ENTER(varname)                                    \
  48         static int varname = NOTENTERED;                        \
  49         int mustunlock = 0;                                     \
  50         if(!intr_disabled()) { lock; mustunlock = 1; }          \
  51         vmassert(varname == ENTERED || varname == NOTENTERED);  \
  52         vmassert(magictest == MAGICTEST);                       \
  53         vmassert(varname != ENTERED);                           \
  54         varname = ENTERED;
  55
  56 #define NOREC_RETURN(varname, v) do {                           \
  57         vmassert(intr_disabled());                              \
  58         vmassert(magictest == MAGICTEST);                       \
  59         vmassert(varname == ENTERED || varname == NOTENTERED);  \
  60         varname = NOTENTERED;                                   \
  61         if(mustunlock)  { unlock;       }                       \
  62         return v;                                               \
  63 } while(0)
  64
  65 #if DEBUG_VMASSERT
  66 #define vmassert(t) { \
  67         if(!(t)) { minix_panic("vm: assert " #t " failed in " __FILE__, __LINE__); } }
  68 #else
  69 #define vmassert(t) { }
  70 #endif
  71
  72 #define NOT_REACHABLE   do {                                            \
  73         kprintf("NOT_REACHABLE at %s:%d\n", __FILE__, __LINE__);        \
  74         minix_panic("execution at an unexpected location\n", NO_NUM);   \
  75         for(;;);                                                        \
  76 } while(0)
  77
  78 #define NOT_IMPLEMENTED do {    \
  79                 kprintf("NOT_IMPLEMENTED at %s:%d\n", __FILE__, __LINE__); \
  80                 minix_panic("NOT_IMPLEMENTED", NO_NUM); \
  81 } while(0)
  82
  83 #ifdef CONFIG_BOOT_VERBOSE
  84 #define BOOT_VERBOSE(x) x
  85 #else
  86 #define BOOT_VERBOSE(x)
  87 #endif
  88
  89 #endif /* DEBUG_H */