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 NOREC_ENTER(varname) \
  45         static int varname = 0; \
  46         int mustunlock = 0; \
  47         if(!intr_disabled()) { lock; mustunlock = 1; } \
  48         if(varname) {   \
  49                 minix_panic(#varname " recursive enter", __LINE__); \
  50         } \
  51         varname = 1;
  52
  53 #define NOREC_RETURN(varname, v) do {   \
  54         if(!varname)            \
  55                 minix_panic(#varname " flag off", __LINE__); \
  56         if(!intr_disabled())    \
  57                 minix_panic(#varname " interrupts on", __LINE__); \
  58         varname = 0;    \
  59         if(mustunlock)  { unlock;       } \
  60         return v;       \
  61         } while(0)
  62
  63 #if DEBUG_VMASSERT
  64 #define vmassert(t) { \
  65         if(!(t)) { minix_panic("vm: assert " #t " failed\n", __LINE__); } }
  66 #else
  67 #define vmassert(t) { }
  68 #endif
  69
  70 #define NOT_REACHABLE(__x) do {                                         \
  71         kprintf("NOT_REACHABLE at %s:%d\n", __FILE__, __LINE__);        \
  72         minix_panic("execution at an unexpected location\n", NO_NUM);   \
  73         for(;;);                                                        \
  74 } while(0)
  75
  76 #endif /* DEBUG_H */