bindings/perl-shared/RRDs.xs

   1 #ifdef __cplusplus
   2 extern "C" {
   3 #endif
   4
   5 #include "EXTERN.h"
   6 #include "perl.h"
   7 #include "XSUB.h"
   8 #include <time.h>
   9
  10 #ifdef __cplusplus
  11 }
  12 #endif
  13
  14 #include "../src/rrd_tool.h"
  15
  16 /* perl 5.004 compatibility */
  17 #if PERLPATCHLEVEL < 5
  18 #define PL_sv_undef sv_undef
  19 #endif
  20
  21 #define rrdcode(name) \
  22                 argv = (char **) malloc((items+1)*sizeof(char *));\
  23                 argv[0] = "dummy";\
  24                 for (i = 0; i < items; i++) { \
  25                     STRLEN len; \
  26                     char *handle= SvPV(ST(i),len);\
  27                     /* actually copy the data to make sure possible modifications \
  28                        on the argv data does not backfire into perl */ \
  29                     argv[i+1] = (char *) malloc((strlen(handle)+1)*sizeof(char)); \
  30                     strcpy(argv[i+1],handle); \
  31                 } \
  32                 optind=0; opterr=0; \
  33                 rrd_clear_error();\
  34                 RETVAL=name(items+1,argv); \
  35                 for (i=0; i < items; i++) {\
  36                     free(argv[i+1]);\
  37                 } \
  38                 free(argv);\
  39                 \
  40                 if (rrd_test_error()) XSRETURN_UNDEF;
  41
  42
  43 #ifdef WIN32
  44  #define free free
  45  #define malloc malloc
  46  #define realloc realloc
  47 #endif /*WIN32*/
  48
  49
  50 MODULE = RRDs   PACKAGE = RRDs  PREFIX = rrd_
  51
  52 BOOT:
  53 #ifdef MUST_DISABLE_SIGFPE
  54         signal(SIGFPE,SIG_IGN);
  55 #endif
  56 #ifdef MUST_DISABLE_FPMASK
  57         fpsetmask(0);
  58 #endif
  59
  60
  61 SV*
  62 rrd_error()
  63         CODE:
  64                 if (! rrd_test_error()) XSRETURN_UNDEF;
  65                 RETVAL = newSVpv(rrd_get_error(),0);
  66         OUTPUT:
  67                 RETVAL
  68
  69
  70 int
  71 rrd_last(...)
  72       PROTOTYPE: @
  73       PREINIT:
  74       int i;
  75       char **argv;
  76       CODE:
  77               rrdcode(rrd_last);
  78       OUTPUT:
  79             RETVAL
  80
  81
  82 int
  83 rrd_create(...)
  84         PROTOTYPE: @
  85         PREINIT:
  86         int i;
  87         char **argv;
  88         CODE:
  89                 rrdcode(rrd_create);
  90                 RETVAL = 1;
  91         OUTPUT:
  92                 RETVAL
  93
  94
  95 int
  96 rrd_update(...)
  97         PROTOTYPE: @
  98         PREINIT:
  99         int i;
 100         char **argv;
 101         CODE:
 102                 rrdcode(rrd_update);
 103                 RETVAL = 1;
 104         OUTPUT:
 105                 RETVAL
 106
 107
 108 int
 109 rrd_tune(...)
 110         PROTOTYPE: @
 111         PREINIT:
 112         int i;
 113         char **argv;
 114         CODE:
 115                 rrdcode(rrd_tune);
 116                 RETVAL = 1;
 117         OUTPUT:
 118                 RETVAL
 119
 120
 121 void
 122 rrd_graph(...)
 123         PROTOTYPE: @
 124         PREINIT:
 125         char **calcpr;
 126         int i,xsize,ysize;
 127         char **argv;
 128         AV *retar;
 129         PPCODE:
 130                 argv = (char **) malloc((items+1)*sizeof(char *));
 131                 argv[0] = "dummy";
 132                 for (i = 0; i < items; i++) {
 133                     STRLEN len;
 134                     char *handle = SvPV(ST(i),len);
 135                     /* actually copy the data to make sure possible modifications
 136                        on the argv data does not backfire into perl */
 137                     argv[i+1] = (char *) malloc((strlen(handle)+1)*sizeof(char));
 138                     strcpy(argv[i+1],handle);
 139                 }
 140                 optind=0; opterr=0;
 141                 rrd_clear_error();
 142                 tzset();
 143                 rrd_graph(items+1,argv,&calcpr,&xsize,&ysize);
 144                 for (i=0; i < items; i++) {
 145                     free(argv[i+1]);
 146                 }
 147                 free(argv);
 148
 149                 if (rrd_test_error()) {
 150                         if(calcpr)
 151                            for(i=0;calcpr[i];i++)
 152                                 free(calcpr[i]);
 153                         XSRETURN_UNDEF;
 154                 }
 155                 retar=newAV();
 156                 if(calcpr){
 157                         for(i=0;calcpr[i];i++){
 158                                  av_push(retar,newSVpv(calcpr[i],0));
 159                                  free(calcpr[i]);
 160                         }
 161                         free(calcpr);
 162                 }
 163                 EXTEND(sp,4);
 164                 PUSHs(sv_2mortal(newRV_noinc((SV*)retar)));
 165                 PUSHs(sv_2mortal(newSViv(xsize)));
 166                 PUSHs(sv_2mortal(newSViv(ysize)));
 167
 168 void
 169 rrd_fetch(...)
 170         PROTOTYPE: @
 171         PREINIT:
 172                 time_t        start,end;
 173                 unsigned long step, ds_cnt,i,ii;
 174                 rrd_value_t   *data,*datai;
 175                 char **argv;
 176                 char **ds_namv;
 177                 AV *retar,*line,*names;
 178         PPCODE:
 179                 argv = (char **) malloc((items+1)*sizeof(char *));
 180                 argv[0] = "dummy";
 181                 for (i = 0; i < items; i++) {
 182                     STRLEN len;
 183                     char *handle= SvPV(ST(i),len);
 184                     /* actually copy the data to make sure possible modifications
 185                        on the argv data does not backfire into perl */
 186                     argv[i+1] = (char *) malloc((strlen(handle)+1)*sizeof(char));
 187                     strcpy(argv[i+1],handle);
 188                 }
 189                 optind=0; opterr=0;
 190                 rrd_clear_error();
 191                 rrd_fetch(items+1,argv,&start,&end,&step,&ds_cnt,&ds_namv,&data);
 192                 for (i=0; i < items; i++) {
 193                     free(argv[i+1]);
 194                 }
 195                 free(argv);
 196                 if (rrd_test_error()) XSRETURN_UNDEF;
 197                 /* convert the ds_namv into perl format */
 198                 names=newAV();
 199                 for (ii = 0; ii < ds_cnt; ii++){
 200                     av_push(names,newSVpv(ds_namv[ii],0));
 201                     free(ds_namv[ii]);
 202                 }
 203                 free(ds_namv);
 204                 /* convert the data array into perl format */
 205                 datai=data;
 206                 retar=newAV();
 207                 for (i = start; i <= end; i += step){
 208                         line = newAV();
 209                         for (ii = 0; ii < ds_cnt; ii++){
 210                           av_push(line,(isnan(*datai) ? &PL_sv_undef : newSVnv(*datai)));
 211                           datai++;
 212                         }
 213                         av_push(retar,newRV_noinc((SV*)line));
 214                 }
 215                 free(data);
 216                 EXTEND(sp,5);
 217                 PUSHs(sv_2mortal(newSViv(start)));
 218                 PUSHs(sv_2mortal(newSViv(step)));
 219                 PUSHs(sv_2mortal(newRV_noinc((SV*)names)));
 220                 PUSHs(sv_2mortal(newRV_noinc((SV*)retar)));
 221
 222
 223 SV*
 224 rrd_info(...)
 225         PROTOTYPE: @
 226         PREINIT:
 227                 info_t *data,*save;
 228                 int i;
 229                 char **argv;
 230                 HV *hash;
 231         CODE:
 232                 /* prepare argument list */
 233                 argv = (char **) malloc((items+1)*sizeof(char *));
 234                 argv[0] = "dummy";
 235                 for (i = 0; i < items; i++) {
 236                     STRLEN len;
 237                     char *handle= SvPV(ST(i),len);
 238                     /* actually copy the data to make sure possible modifications
 239                        on the argv data does not backfire into perl */
 240                     argv[i+1] = (char *) malloc((strlen(handle)+1)*sizeof(char));
 241                     strcpy(argv[i+1],handle);
 242                 }
 243                 optind=0; opterr=0;
 244                 rrd_clear_error();
 245                 data=rrd_info(items+1, argv);
 246                 for (i=0; i < items; i++) {
 247                     free(argv[i+1]);
 248                 }
 249                 free(argv);
 250                 if (rrd_test_error()) XSRETURN_UNDEF;
 251                 hash = newHV();
 252                 while (data) {
 253                     save=data;
 254                 /* the newSV will get copied by hv so we create it as a mortal to make sure
 255                    it does not keep hanging round after the fact */
 256 #define hvs(VAL) hv_store_ent(hash, sv_2mortal(newSVpv(data->key,0)),VAL,0)
 257                     switch (data->type) {
 258                     case RD_I_VAL:
 259                         if (isnan(data->value.u_val))
 260                             hvs(&PL_sv_undef);
 261                         else
 262                             hvs(newSVnv(data->value.u_val));
 263                         break;
 264                     case RD_I_CNT:
 265                         hvs(newSViv(data->value.u_cnt));
 266                         break;
 267                     case RD_I_STR:
 268                         hvs(newSVpv(data->value.u_str,0));
 269                         free(data->value.u_str);
 270                         break;
 271                     }
 272 #undefine hvs
 273                     free(data->key);
 274                     data = data->next;
 275                     free(save);
 276                 }
 277                 free(data);
 278                 RETVAL = newRV_noinc((SV*)hash);
 279        OUTPUT:
 280                 RETVAL
 281
 282