diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/beam/io.c | 63 |
1 files changed, 25 insertions, 38 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index 31c941337f..45fef0c0e5 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -5298,44 +5298,31 @@ erts_get_port_names(Eterm id, ErlDrvPort drv_port) pnp->driver_name = NULL; } else { - int do_realloc = 1; - int len = -1; - size_t pnp_len = sizeof(ErtsPortNames); -#ifndef DEBUG - pnp_len += 100; /* In most cases 100 characters will be enough... */ - ASSERT(prt->common.id == id); -#endif - pnp = erts_alloc(ERTS_ALC_T_PORT_NAMES, pnp_len); - do { - int nlen; - char *name, *driver_name; - if (len > 0) { - erts_free(ERTS_ALC_T_PORT_NAMES, pnp); - pnp_len = sizeof(ErtsPortNames) + len; - pnp = erts_alloc(ERTS_ALC_T_PORT_NAMES, pnp_len); - } - name = prt->name; - len = nlen = name ? sys_strlen(name) + 1 : 0; - driver_name = (prt->drv_ptr ? prt->drv_ptr->name : NULL); - len += driver_name ? sys_strlen(driver_name) + 1 : 0; - if (len <= pnp_len - sizeof(ErtsPortNames)) { - if (!name) - pnp->name = NULL; - else { - pnp->name = ((char *) pnp) + sizeof(ErtsPortNames); - sys_strcpy(pnp->name, name); - } - if (!driver_name) - pnp->driver_name = NULL; - else { - pnp->driver_name = (((char *) pnp) - + sizeof(ErtsPortNames) - + nlen); - sys_strcpy(pnp->driver_name, driver_name); - } - do_realloc = 0; - } - } while (do_realloc); + int len; + int nlen; + char *driver_name; + + len = nlen = prt->name ? sys_strlen(prt->name) + 1 : 0; + driver_name = (prt->drv_ptr ? prt->drv_ptr->name : NULL); + len += driver_name ? sys_strlen(driver_name) + 1 : 0; + + pnp = erts_alloc(ERTS_ALC_T_PORT_NAMES, + sizeof(ErtsPortNames) + len); + + if (!prt->name) + pnp->name = NULL; + else { + pnp->name = ((char *) pnp) + sizeof(ErtsPortNames); + sys_strcpy(pnp->name, prt->name); + } + if (!driver_name) + pnp->driver_name = NULL; + else { + pnp->driver_name = (((char *) pnp) + + sizeof(ErtsPortNames) + + nlen); + sys_strcpy(pnp->driver_name, driver_name); + } } return pnp; } |