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debugging - printing processes on serial

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- this patch moves the former printslot() from arch_system.c to
  debug.c and reimplements it slightly. The output is not changed,
  however, the process information is printed in a separate function
  print_proc() in debug.c as such a function is also handy in other
  situations and should be publicly available when debugging.
This commit is contained in:
Tomas Hruby 2010-05-03 17:37:18 +00:00
parent 4ae9c03147
commit 57a88ce708
3 changed files with 78 additions and 51 deletions
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52
kernel/arch/i386/arch_system.c
View file

@ -324,56 +324,6 @@ PRIVATE void ser_debug(const int c)
serial_debug_active = 0;
}
PRIVATE void printslot(struct proc *pp, const int level)
{
struct proc *depproc = NULL;
endpoint_t dep;
#define COL { int i; for(i = 0; i < level; i++) printf("> "); }
if(level >= NR_PROCS) {
printf("loop??\n");
return;
}
COL
printf("%d: %s %d prio %d time %d/%d cycles 0x%x%08x cr3 0x%lx rts %s misc %s sched %s",
proc_nr(pp), pp->p_name, pp->p_endpoint,
pp->p_priority, pp->p_user_time,
pp->p_sys_time, pp->p_cycles.hi, pp->p_cycles.lo, pp->p_seg.p_cr3,
rtsflagstr(pp->p_rts_flags), miscflagstr(pp->p_misc_flags),
schedulerstr(pp->p_scheduler));
if((dep = P_BLOCKEDON(pp)) != NONE) {
printf(" blocked on: ");
if(dep == ANY) {
printf(" ANY\n");
} else {
int procno;
if(!isokendpt(dep, &procno)) {
printf(" ??? %d\n", dep);
} else {
depproc = proc_addr(procno);
if(isemptyp(depproc)) {
printf(" empty slot %d???\n", procno);
depproc = NULL;
} else {
printf(" %s\n", depproc->p_name);
}
}
}
} else {
printf("\n");
}
COL
proc_stacktrace(pp);
if(depproc)
printslot(depproc, level+1);
}
PUBLIC void ser_dump_proc()
{
@ -383,7 +333,7 @@ PUBLIC void ser_dump_proc()
{
if (isemptyp(pp))
continue;
printslot(pp, 0);
print_proc_recursive(pp);
}
}

73
kernel/debug.c
View file

@ -161,3 +161,76 @@ schedulerstr(struct proc *scheduler)
return "KERNEL";
}
PUBLIC void print_proc(struct proc *pp)
{
struct proc *depproc = NULL;
endpoint_t dep;
printf("%d: %s %d prio %d time %d/%d cycles 0x%x%08x cr3 0x%lx rts %s misc %s sched %s",
proc_nr(pp), pp->p_name, pp->p_endpoint,
pp->p_priority, pp->p_user_time,
pp->p_sys_time, pp->p_cycles.hi, pp->p_cycles.lo, pp->p_seg.p_cr3,
rtsflagstr(pp->p_rts_flags), miscflagstr(pp->p_misc_flags),
schedulerstr(pp->p_scheduler));
dep = P_BLOCKEDON(pp);
if(dep != NONE) {
printf(" blocked on: ");
if(dep == ANY) {
printf(" ANY\n");
} else {
int procno;
if(!isokendpt(dep, &procno)) {
printf(" ??? %d\n", dep);
} else {
depproc = proc_addr(procno);
if(isemptyp(depproc)) {
printf(" empty slot %d???\n", procno);
depproc = NULL;
} else {
printf(" %s\n", depproc->p_name);
}
}
}
} else {
printf("\n");
}
}
PRIVATE void print_proc_depends(struct proc *pp, const int level)
{
struct proc *depproc = NULL;
endpoint_t dep;
#define COL { int i; for(i = 0; i < level; i++) printf("> "); }
if(level >= NR_PROCS) {
printf("loop??\n");
return;
}
COL
print_proc(pp);
COL
proc_stacktrace(pp);
dep = P_BLOCKEDON(pp);
if(dep != NONE) {
int procno;
if(isokendpt(dep, &procno)) {
depproc = proc_addr(procno);
if(isemptyp(depproc))
depproc = NULL;
}
if (depproc)
print_proc_depends(depproc, level+1);
}
}
PUBLIC void print_proc_recursive(struct proc *pp)
{
print_proc_depends(pp, 0);
}

4
kernel/proto.h
View file

@ -92,6 +92,10 @@ _PROTOTYPE( int runqueues_ok, (void) );
_PROTOTYPE( char *rtsflagstr, (int flags) );
_PROTOTYPE( char *miscflagstr, (int flags) );
_PROTOTYPE( char *schedulerstr, (struct proc *scheduler) );
/* prints process information */
_PROTOTYPE( void print_proc, (struct proc *pp));
/* prints the given process and recursively all processes it depends on */
_PROTOTYPE( void print_proc_recursive, (struct proc *pp));
/* system/do_safemap.c */
_PROTOTYPE( int map_invoke_vm, (struct proc * caller, int req_type,