view release on metacpan or  search on metacpan

SysV.xs  view on Meta::CPAN

#  endif
#endif

#define AV_FETCH_IV(ident, av, index)                         \
        STMT_START {                                          \
          SV **svp;                                           \
          if ((svp = av_fetch((av), (index), FALSE)) != NULL) \
            ident = SvIV(*svp);                               \
        } STMT_END

#define AV_STORE_IV(ident, av, index)                         \
          av_store((av), (index), newSViv(ident))

static const char *s_fmt_not_isa = "Method %s not called a %s object";
static const char *s_bad_length = "Bad arg length for %s, length is %d, should be %d";
static const char *s_sysv_unimpl PERL_UNUSED_DECL
                                 = "System V %sxxx is not implemented on this machine";

static const char *s_pkg_msg = "IPC::Msg::stat";
static const char *s_pkg_sem = "IPC::Semaphore::stat";
static const char *s_pkg_shm = "IPC::SharedMem::stat";

static void *sv2addr(SV *sv)
{
  if (SvPOK(sv) && SvCUR(sv) == sizeof(void *))
  {
    return *((void **) SvPVX(sv));
  }

  croak("invalid address value");

  return 0;
}

static void assert_sv_isa(SV *sv, const char *name, const char *method)
{
  if (!sv_isa(sv, name))
  {
    croak(s_fmt_not_isa, method, name);
  }
}

static void assert_data_length(const char *name, int got, int expected)
{
  if (got != expected)
  {
    croak(s_bad_length, name, got, expected);
  }
}

#include "const-c.inc"


MODULE=IPC::SysV	PACKAGE=IPC::Msg::stat

PROTOTYPES: ENABLE

void
pack(obj)
    SV	* obj
PPCODE:
  {
#ifdef HAS_MSG
    AV *list = (AV*) SvRV(obj);
    struct msqid_ds ds;
    assert_sv_isa(obj, s_pkg_msg, "pack");
    AV_FETCH_IV(ds.msg_perm.uid , list,  0);
    AV_FETCH_IV(ds.msg_perm.gid , list,  1);
    AV_FETCH_IV(ds.msg_perm.cuid, list,  2);
    AV_FETCH_IV(ds.msg_perm.cgid, list,  3);
    AV_FETCH_IV(ds.msg_perm.mode, list,  4);
    AV_FETCH_IV(ds.msg_qnum     , list,  5);
    AV_FETCH_IV(ds.msg_qbytes   , list,  6);
    AV_FETCH_IV(ds.msg_lspid    , list,  7);
    AV_FETCH_IV(ds.msg_lrpid    , list,  8);
    AV_FETCH_IV(ds.msg_stime    , list,  9);
    AV_FETCH_IV(ds.msg_rtime    , list, 10);
    AV_FETCH_IV(ds.msg_ctime    , list, 11);
    ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "msg");
#endif
  }

void
unpack(obj, ds)
    SV * obj
    SV * ds
PPCODE:
  {
#ifdef HAS_MSG
    AV *list = (AV*) SvRV(obj);
    STRLEN len;
    const struct msqid_ds *data = (struct msqid_ds *) SvPV_const(ds, len);
    assert_sv_isa(obj, s_pkg_msg, "unpack");
    assert_data_length(s_pkg_msg, len, sizeof(*data));
    AV_STORE_IV(data->msg_perm.uid , list,  0);
    AV_STORE_IV(data->msg_perm.gid , list,  1);
    AV_STORE_IV(data->msg_perm.cuid, list,  2);
    AV_STORE_IV(data->msg_perm.cgid, list,  3);
    AV_STORE_IV(data->msg_perm.mode, list,  4);
    AV_STORE_IV(data->msg_qnum     , list,  5);
    AV_STORE_IV(data->msg_qbytes   , list,  6);
    AV_STORE_IV(data->msg_lspid    , list,  7);
    AV_STORE_IV(data->msg_lrpid    , list,  8);
    AV_STORE_IV(data->msg_stime    , list,  9);
    AV_STORE_IV(data->msg_rtime    , list, 10);
    AV_STORE_IV(data->msg_ctime    , list, 11);
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "msg");
#endif
  }


MODULE=IPC::SysV	PACKAGE=IPC::Semaphore::stat

PROTOTYPES: ENABLE

void
pack(obj)
    SV	* obj
PPCODE:
  {
#ifdef HAS_SEM
    AV *list = (AV*) SvRV(obj);
    struct semid_ds ds;
    assert_sv_isa(obj, s_pkg_sem, "pack");
    AV_FETCH_IV(ds.sem_perm.uid , list, 0);
    AV_FETCH_IV(ds.sem_perm.gid , list, 1);
    AV_FETCH_IV(ds.sem_perm.cuid, list, 2);
    AV_FETCH_IV(ds.sem_perm.cgid, list, 3);
    AV_FETCH_IV(ds.sem_perm.mode, list, 4);
    AV_FETCH_IV(ds.sem_ctime    , list, 5);
    AV_FETCH_IV(ds.sem_otime    , list, 6);
    AV_FETCH_IV(ds.sem_nsems    , list, 7);
    ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "sem");
#endif
  }

void
unpack(obj, ds)
    SV * obj
    SV * ds
PPCODE:
  {
#ifdef HAS_SEM
    AV *list = (AV*) SvRV(obj);
    STRLEN len;
    const struct semid_ds *data = (struct semid_ds *) SvPV_const(ds, len);
    assert_sv_isa(obj, s_pkg_sem, "unpack");
    assert_data_length(s_pkg_sem, len, sizeof(*data));
    AV_STORE_IV(data->sem_perm.uid , list, 0);
    AV_STORE_IV(data->sem_perm.gid , list, 1);
    AV_STORE_IV(data->sem_perm.cuid, list, 2);
    AV_STORE_IV(data->sem_perm.cgid, list, 3);
    AV_STORE_IV(data->sem_perm.mode, list, 4);
    AV_STORE_IV(data->sem_ctime    , list, 5);
    AV_STORE_IV(data->sem_otime    , list, 6);
    AV_STORE_IV(data->sem_nsems    , list, 7);
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "sem");
#endif
  }


MODULE=IPC::SysV	PACKAGE=IPC::SharedMem::stat

PROTOTYPES: ENABLE

void
pack(obj)
    SV	* obj
PPCODE:
  {
#ifdef HAS_SHM
    AV *list = (AV*) SvRV(obj);
    struct shmid_ds ds;
    assert_sv_isa(obj, s_pkg_shm, "pack");
    AV_FETCH_IV(ds.shm_perm.uid , list,  0);
    AV_FETCH_IV(ds.shm_perm.gid , list,  1);
    AV_FETCH_IV(ds.shm_perm.cuid, list,  2);
    AV_FETCH_IV(ds.shm_perm.cgid, list,  3);
    AV_FETCH_IV(ds.shm_perm.mode, list,  4);
    AV_FETCH_IV(ds.shm_segsz    , list,  5);
    AV_FETCH_IV(ds.shm_lpid     , list,  6);
    AV_FETCH_IV(ds.shm_cpid     , list,  7);
    AV_FETCH_IV(ds.shm_nattch   , list,  8);
    AV_FETCH_IV(ds.shm_atime    , list,  9);
    AV_FETCH_IV(ds.shm_dtime    , list, 10);
    AV_FETCH_IV(ds.shm_ctime    , list, 11);
    ST(0) = sv_2mortal(newSVpvn((char *) &ds, sizeof(ds)));
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "shm");
#endif
  }

void
unpack(obj, ds)
    SV * obj
    SV * ds
PPCODE:
  {
#ifdef HAS_SHM
    AV *list = (AV*) SvRV(obj);
    STRLEN len;
    const struct shmid_ds *data = (struct shmid_ds *) SvPV_const(ds, len);
    assert_sv_isa(obj, s_pkg_shm, "unpack");
    assert_data_length(s_pkg_shm, len, sizeof(*data));
    AV_STORE_IV(data->shm_perm.uid , list,  0);
    AV_STORE_IV(data->shm_perm.gid , list,  1);
    AV_STORE_IV(data->shm_perm.cuid, list,  2);
    AV_STORE_IV(data->shm_perm.cgid, list,  3);
    AV_STORE_IV(data->shm_perm.mode, list,  4);
    AV_STORE_IV(data->shm_segsz    , list,  5);
    AV_STORE_IV(data->shm_lpid     , list,  6);
    AV_STORE_IV(data->shm_cpid     , list,  7);
    AV_STORE_IV(data->shm_nattch   , list,  8);
    AV_STORE_IV(data->shm_atime    , list,  9);
    AV_STORE_IV(data->shm_dtime    , list, 10);
    AV_STORE_IV(data->shm_ctime    , list, 11);
    XSRETURN(1);
#else
    croak(s_sysv_unimpl, "shm");
#endif
  }


MODULE=IPC::SysV	PACKAGE=IPC::SysV

PROTOTYPES: ENABLE

void
ftok(path, id = &PL_sv_undef)
    const char *path
    SV *id
  PREINIT:
    int proj_id = 1;
    key_t k;
  CODE:
#if defined(HAS_SEM) || defined(HAS_SHM)
    if (SvOK(id))
    {
      if (SvIOK(id))
      {
        proj_id = (int) SvIVX(id);
      }
      else if (SvPOK(id) && SvCUR(id) == sizeof(char))
      {
        proj_id = (int) *SvPVX(id);
      }
      else
      {
        croak("invalid project id");
      }
    }
/* Including <sys/types.h> before <sys/ipc.h> makes Tru64
 * to see the obsolete prototype of ftok() first, grumble. */
# ifdef __osf__
#  define Ftok_t char*
/* Configure TODO Ftok_t */
# endif