C++ (Cpp) _extnbuf_free Examples

Example #1

File: ecore_evas_extn_buf.c Project: tguillem/efl

// "owner" creates/frees the bufs, clients just open existing ones
Extnbuf *
_extnbuf_new(const char *base, int id, Eina_Bool sys, int num,
             int w, int h, Eina_Bool owner)
{
   Extnbuf *b;
   char file[PATH_MAX];
   mode_t mode = S_IRUSR;
   int prot = PROT_READ;
   int page_size;
   Eina_Tmpstr *tmp = NULL;

   page_size = eina_cpu_page_size();

   b = calloc(1, sizeof(Extnbuf));
   b->fd = -1;
   b->lockfd = -1;
   b->addr = MAP_FAILED;
   b->w = w;
   b->h = h;
   b->stride = w * 4;
   b->size = page_size * (((b->stride * b->h) + (page_size - 1)) / page_size);
   b->am_owner = owner;

   snprintf(file, sizeof(file), "/%s-%i.%i", base, id, num);
   b->file = eina_stringshare_add(file);
   if (!b->file) goto err;


   if (sys) mode |= S_IRGRP | S_IROTH;

   if (owner)
     {
        mode |= S_IWUSR;
        prot |= PROT_WRITE;
     }

   if (b->am_owner)
     {
        b->lockfd = eina_file_mkstemp("ee-lock-XXXXXX", &tmp);
        if (b->lockfd < 0) goto err;
        b->lock = eina_stringshare_add(file);
        if (!b->lock) goto err;
        b->fd = shm_open(b->file, O_RDWR | O_CREAT | O_EXCL, mode);
        if (b->fd < 0) goto err;
        if (ftruncate(b->fd, b->size) < 0) goto err;
     }
   else
     {
        b->fd = shm_open(b->file, O_RDONLY, mode);
        if (b->fd < 0) goto err;
     }
   b->addr = mmap(NULL, b->size, prot, MAP_SHARED, b->fd, 0);
   if (b->addr == MAP_FAILED) goto err;
   return b;
err:
   if (tmp) eina_tmpstr_del(tmp);
   _extnbuf_free(b);
   return NULL;
}

Example #2

File: ecore_evas_extn_buf.c Project: jigpu/efl

// "owner" creates/frees the bufs, clients just open existing ones
Extnbuf *
_extnbuf_new(const char *base, int id, Eina_Bool sys, int num,
             int w, int h, Eina_Bool owner)
{
   Extnbuf *b;
   char file[PATH_MAX];
   mode_t mode = S_IRUSR | S_IWUSR;

   b = calloc(1, sizeof(Extnbuf));
   b->fd = -1;
   b->lockfd = -1;
   b->addr = MAP_FAILED;
   b->w = w;
   b->h = h;
   b->stride = w * 4;
   b->size = 4096 * (((b->stride * b->h) + (4096 - 1)) / 4096);
   b->am_owner = owner;

   snprintf(file, sizeof(file), "/%s-%i.%i", base, id, num);
   b->file = eina_stringshare_add(file);
   if (!b->file) goto err;
   
   if (sys) mode |= S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
   
   if (b->am_owner)
     {
        const char *s;
        
        s = getenv("XDG_RUNTIME_DIR");
        if (!s) s = getenv("TMPDIR");
        if (!s) s = "/tmp";
        snprintf(file, sizeof(file), "%s/ee-lock-XXXXXX", s);
        b->lockfd = mkstemp(file);
        if (b->lockfd < 0) goto err;
        b->lock = eina_stringshare_add(file);
        if (!b->lock) goto err;
        b->fd = shm_open(b->file, O_RDWR | O_CREAT | O_EXCL, mode);
        if (b->fd < 0) goto err;
        if (ftruncate(b->fd, b->size) < 0) goto err;
     }
   else
     {
        b->fd = shm_open(b->file, O_RDWR, mode);
        if (b->fd < 0) goto err;
     }
   b->addr = mmap(NULL, b->size, PROT_READ | PROT_WRITE, MAP_SHARED,
                  b->fd, 0);
   if (b->addr == MAP_FAILED) goto err;
   return b;
err:
   _extnbuf_free(b);
   return NULL;
}