minix/servers/pm/profile.c

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/* This file implements entry points for system profiling.
*
* The entry points in this file are:
* do_sprofile: start/stop statistical profiling
* do_cprofile: get/reset call profiling tables
*
* Changes:
* 14 Aug, 2006 Created (Rogier Meurs)
*/
#include <minix/config.h>
#include <minix/profile.h>
#include "pm.h"
#include <sys/wait.h>
#include <minix/callnr.h>
#include <minix/com.h>
#include <signal.h>
#include "mproc.h"
#include "param.h"
#if SPROFILE || CPROFILE
FORWARD _PROTOTYPE( int check_addrs, (int info_size) );
#endif
/*===========================================================================*
* do_sprofile *
*===========================================================================*/
PUBLIC int do_sprofile(void)
{
#if SPROFILE
int r;
switch(m_in.PROF_ACTION) {
case PROF_START:
if ((r = check_addrs(sizeof(sprof_info_inst)))) /* check pointers */
return r;
return sys_sprof(PROF_START, m_in.PROF_MEM_SIZE, m_in.PROF_FREQ,
who_e, m_in.PROF_CTL_PTR, m_in.PROF_MEM_PTR);
case PROF_STOP:
return sys_sprof(PROF_STOP,0,0,0,0,0);
default:
return EINVAL;
}
#else
return ENOSYS;
#endif
}
/*===========================================================================*
* do_cprofile *
*===========================================================================*/
PUBLIC int do_cprofile(void)
{
#if CPROFILE
int r;
switch(m_in.PROF_ACTION) {
case PROF_GET:
if (r = check_addrs(sizeof(cprof_info_inst))) /* check user pointers */
return r;
return sys_cprof(PROF_GET, m_in.PROF_MEM_SIZE, who_e,
m_in.PROF_CTL_PTR, m_in.PROF_MEM_PTR);
case PROF_RESET:
return sys_cprof(PROF_RESET,0,0,0,0);
default:
return EINVAL;
}
#else
return ENOSYS;
#endif
}
#if SPROFILE || CPROFILE
/*===========================================================================*
* check_addrs *
*===========================================================================*/
PRIVATE int check_addrs(info_size)
int info_size;
{
int r;
phys_bytes p;
/* Check if supplied pointers point into user process. */
if ((r = sys_umap(who_e, D, (vir_bytes) m_in.PROF_CTL_PTR,
info_size, &p)) != OK) {
printf("PM: PROFILE: umap failed for process %d\n", who_e);
return r;
}
if ((r =sys_umap(who_e, D, (vir_bytes) m_in.PROF_MEM_PTR,
m_in.PROF_MEM_SIZE, &p)) != OK) {
printf("PM: PROFILE: umap failed for process %d\n", who_e);
return r;
}
return 0;
}
#endif