Minix/minix
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Reorganized system call library; uses separate file per call now.

Browse Source 
New configuration header file to include/ exclude functionality.
Extracted privileged features from struct proc and create new struct priv.
Renamed various system calls for readability.
This commit is contained in:
Jorrit Herder
2005-07-14 15:12:12 +00:00
parent 355d22ff06
commit 42ab148155
53 changed files with 1957 additions and 1503 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
kernel/debug.h
View File

@@ -1,15 +1,74 @@
#ifndef DEBUG_H
#define DEBUG_H
#include <minix/config.h>
/* This header file defines all debugging constants and macros, and declares
* some variables. Certain debugging features redefine standard constants
* and macros. Therefore, this header file should be included after the
* other kernel headers.
*/
#if ENABLE_LOCK_TIMING
#include "config.h"
/* It's interesting to measure the time spent withing locked regions, because
* this is the time that the system is deaf to interrupts.
*/
#if DEBUG_TIME_LOCKS
#define TIMING_POINTS 20 /* timing resolution */
#define TIMING_CATEGORIES 20
#define TIMING_NAME 10
/* Definition of the data structure to store lock() timing data. */
struct lock_timingdata {
char names[TIMING_NAME];
unsigned long lock_timings[TIMING_POINTS];
unsigned long lock_timings_range[2];
unsigned long binsize, resets, misses, measurements;
};
/* The data is declared here, but allocated in debug.c. */
extern struct lock_timingdata timingdata[TIMING_CATEGORIES];
/* Prototypes for the timing functionality. */
_PROTOTYPE( void timer_start, (int cat, char *name) );
_PROTOTYPE( void timer_end, (int cat) );
#endif
#if ENABLE_K_DEBUGGING /* debugging */
#define locktimestart(c, v) timer_start(c, v)
#define locktimeend(c) timer_end(c)
#else
#define locktimestart(c, v)
#define locktimeend(c)
#endif /* DEBUG_TIME_LOCKS */
/* The locking checks counts relocking situation, which are dangerous because
* the inner lock may unlock the outer one.
*/
#if DEBUG_LOCK_CHECK
#define lockcheck if (!(read_cpu_flags() & X86_FLAG_I)) kinfo.relocking++;
#else
#define lockcheck
#endif /* DEBUG_LOCK_CHECK */
/* This check makes sure that the scheduling queues are in a consistent state.
* The check is run when the queues are updated with ready() and unready().
*/
#if DEBUG_SCHED_CHECK
_PROTOTYPE( void check_runqueues, (char *when) );
#endif /* DEBUG_SCHED_CHECK */
/* The timing and checking of kernel locking requires a redefine of the lock()
* and unlock() macros. That's done here. This redefine requires that this
* header is included after the other kernel headers.
*/
#if (DEBUG_TIME_LOCKS || DEBUG_LOCK_CHECK)
# undef lock
# define lock(c, v) do { lockcheck; intr_disable(); locktimestart(c, v); } while(0)
# undef unlock
# define unlock(c) do { locktimeend(c); intr_enable(); } while(0)
#endif
#endif /* DEBUG_H */
#endif /* DEBUG_H */