servers/pm/profile.c

   1 /* This file implements entry points for system profiling.
   2  *
   3  * The entry points in this file are:
   4  *   do_sprofile:   start/stop statistical profiling
   5  *   do_cprofile:   get/reset call profiling tables
   6  *
   7  * Changes:
   8  *   14 Aug, 2006  Created (Rogier Meurs)
   9  */
  10
  11 #include <minix/config.h>
  12 #include <minix/profile.h>
  13 #include "pm.h"
  14 #include <sys/wait.h>
  15 #include <minix/callnr.h>
  16 #include <minix/com.h>
  17 #include <signal.h>
  18 #include "mproc.h"
  19 #include "param.h"
  20
  21 #if SPROFILE || CPROFILE
  22 FORWARD _PROTOTYPE( int check_addrs, (int info_size)               );
  23 #endif
  24
  25 /*===========================================================================*
  26  *                              do_sprofile                                  *
  27  *===========================================================================*/
  28 PUBLIC int do_sprofile(void)
  29 {
  30 #if SPROFILE
  31
  32   int r;
  33
  34   switch(m_in.PROF_ACTION) {
  35
  36   case PROF_START:
  37         if ((r = check_addrs(sizeof(sprof_info_inst)))) /* check pointers */
  38                 return r;
  39
  40         return sys_sprof(PROF_START, m_in.PROF_MEM_SIZE, m_in.PROF_FREQ,
  41                         who_e, m_in.PROF_CTL_PTR, m_in.PROF_MEM_PTR);
  42
  43   case PROF_STOP:
  44         return sys_sprof(PROF_STOP,0,0,0,0,0);
  45
  46   default:
  47         return EINVAL;
  48   }
  49
  50 #else
  51         return ENOSYS;
  52 #endif
  53 }
  54
  55
  56 /*===========================================================================*
  57  *                              do_cprofile                                  *
  58  *===========================================================================*/
  59 PUBLIC int do_cprofile(void)
  60 {
  61 #if CPROFILE
  62
  63   int r;
  64
  65   switch(m_in.PROF_ACTION) {
  66
  67   case PROF_GET:
  68         if (r = check_addrs(sizeof(cprof_info_inst))) /* check user pointers */
  69                 return r;
  70
  71         return sys_cprof(PROF_GET, m_in.PROF_MEM_SIZE, who_e,
  72                 m_in.PROF_CTL_PTR, m_in.PROF_MEM_PTR);
  73
  74   case PROF_RESET:
  75         return sys_cprof(PROF_RESET,0,0,0,0);
  76
  77   default:
  78         return EINVAL;
  79   }
  80
  81 #else
  82         return ENOSYS;
  83 #endif
  84 }
  85
  86
  87 #if SPROFILE || CPROFILE
  88
  89 /*===========================================================================*
  90  *                              check_addrs                                  *
  91  *===========================================================================*/
  92 PRIVATE int check_addrs(info_size)
  93 int info_size;
  94 {
  95   int r;
  96   phys_bytes p;
  97
  98   /* Check if supplied pointers point into user process. */
  99   if ((r = sys_umap(who_e, D, (vir_bytes) m_in.PROF_CTL_PTR,
 100                                                  info_size, &p)) != OK) {
 101         printf("PM: PROFILE: umap failed for process %d\n", who_e);
 102         return r;
 103   }
 104
 105   if ((r =sys_umap(who_e, D, (vir_bytes) m_in.PROF_MEM_PTR,
 106                                          m_in.PROF_MEM_SIZE, &p)) != OK) {
 107         printf("PM: PROFILE: umap failed for process %d\n", who_e);
 108         return r;
 109   }
 110   return 0;
 111 }
 112
 113 #endif
 114