From 50cb7c24f061fd3d7df5970d8202f47c470a4047 Mon Sep 17 00:00:00 2001 From: Rickard Green Date: Wed, 15 Aug 2012 01:28:55 +0200 Subject: Use ptab functionality also for ports --- erts/emulator/sys/common/erl_check_io.c | 15 +--- erts/emulator/sys/unix/sys.c | 41 +++++---- erts/emulator/sys/vxworks/sys.c | 22 +++-- erts/emulator/sys/win32/sys.c | 143 ++++++++++---------------------- 4 files changed, 85 insertions(+), 136 deletions(-) (limited to 'erts/emulator/sys') diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index 5d814e0164..9ef861bfe4 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -201,17 +201,6 @@ static void event_large_fd_error(ErlDrvPort, ErtsSysFdType, ErlDrvEventData); #endif static void steal_pending_stop_select(erts_dsprintf_buf_t*, ErlDrvPort, ErtsDrvEventState*, int mode, int on); -static ERTS_INLINE Eterm -drvport2id(ErlDrvPort dp) -{ - Port *pp = erts_drvport2port(dp, NULL); - if (pp) - return pp->common.id; - else { - ASSERT(0); - return am_undefined; - } -} #ifdef ERTS_SMP ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(removed_fd, struct removed_fd, 64, ERTS_ALC_T_FD_LIST) @@ -491,7 +480,7 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix, int on) { void (*stop_select_fn)(ErlDrvEvent, void*) = NULL; - Eterm id = drvport2id(ix); + Eterm id = erts_drvport2id(ix); ErtsSysFdType fd = (ErtsSysFdType) e; ErtsPollEvents ctl_events = (ErtsPollEvents) 0; ErtsPollEvents new_events, old_events; @@ -718,7 +707,7 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix, ErtsPollEvents events; ErtsPollEvents add_events; ErtsPollEvents remove_events; - Eterm id = drvport2id(ix); + Eterm id = erts_drvport2id(ix); ErtsDrvEventState *state; int do_wake = 0; int ret; diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index 57ffb9f151..ea98af26bb 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -1023,7 +1023,8 @@ void fini_getenv_state(GETENV_STATE *state) /* This data is shared by these drivers - initialized by spawn_init() */ static struct driver_data { - int port_num, ofd, packet_bytes; + ErlDrvPort port_num; + int ofd, packet_bytes; ErtsSysReportExit *report_exit; int pid; int alive; @@ -1137,7 +1138,7 @@ static RETSIGTYPE onchld(int signum) #endif } -static int set_driver_data(int port_num, +static int set_driver_data(ErlDrvPort port_num, int ifd, int ofd, int packet_bytes, @@ -1153,7 +1154,7 @@ static int set_driver_data(int port_num, report_exit = erts_alloc(ERTS_ALC_T_PRT_REP_EXIT, sizeof(ErtsSysReportExit)); report_exit->next = report_exit_list; - report_exit->port = erts_port[port_num].common.id; + report_exit->port = erts_drvport2id(port_num); report_exit->pid = pid; report_exit->ifd = read_write & DO_READ ? ifd : -1; report_exit->ofd = read_write & DO_WRITE ? ofd : -1; @@ -1234,7 +1235,7 @@ static void close_pipes(int ifd[2], int ofd[2], int read_write) } } -static void init_fd_data(int fd, int prt) +static void init_fd_data(int fd, ErlDrvPort port_num) { fd_data[fd].buf = NULL; fd_data[fd].cpos = NULL; @@ -1922,7 +1923,7 @@ static void clear_fd_data(int fd) fd_data[fd].psz = 0; } -static void nbio_stop_fd(int prt, int fd) +static void nbio_stop_fd(ErlDrvPort prt, int fd) { driver_select(prt,fd,DO_READ|DO_WRITE,0); clear_fd_data(fd); @@ -1970,7 +1971,8 @@ static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name, static void stop(ErlDrvData fd) { - int prt, ofd; + ErlDrvPort prt; + int ofd; prt = driver_data[(int)(long)fd].port_num; nbio_stop_fd(prt, (int)(long)fd); @@ -1983,7 +1985,7 @@ static void stop(ErlDrvData fd) CHLD_STAT_LOCK; - /* Mark as unused. Maybe resetting the 'port_num' slot is better? */ + /* Mark as unused. */ driver_data[(int)(long)fd].pid = -1; CHLD_STAT_UNLOCK; @@ -1999,7 +2001,7 @@ static void stop(ErlDrvData fd) static void outputv(ErlDrvData e, ErlIOVec* ev) { int fd = (int)(long)e; - int ix = driver_data[fd].port_num; + ErlDrvPort ix = driver_data[fd].port_num; int pb = driver_data[fd].packet_bytes; int ofd = driver_data[fd].ofd; ssize_t n; @@ -2049,7 +2051,7 @@ static void outputv(ErlDrvData e, ErlIOVec* ev) static void output(ErlDrvData e, char* buf, ErlDrvSizeT len) { int fd = (int)(long)e; - int ix = driver_data[fd].port_num; + ErlDrvPort ix = driver_data[fd].port_num; int pb = driver_data[fd].packet_bytes; int ofd = driver_data[fd].ofd; ssize_t n; @@ -2100,7 +2102,7 @@ static void output(ErlDrvData e, char* buf, ErlDrvSizeT len) return; /* 0; */ } -static int port_inp_failure(int port_num, int ready_fd, int res) +static int port_inp_failure(ErlDrvPort port_num, int ready_fd, int res) /* Result: 0 (eof) or -1 (error) */ { int err = errno; @@ -2150,7 +2152,7 @@ static int port_inp_failure(int port_num, int ready_fd, int res) static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd) { int fd = (int)(long)e; - int port_num; + ErlDrvPort port_num; int packet_bytes; int res; Uint h; @@ -2273,7 +2275,7 @@ static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd) static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd) { int fd = (int)(long)e; - int ix = driver_data[fd].port_num; + ErlDrvPort ix = driver_data[fd].port_num; int n; struct iovec* iv; int vsize; @@ -2558,19 +2560,20 @@ report_exit_status(ErtsSysReportExit *rep, int status) Port *pp; #ifdef ERTS_SMP CHLD_STAT_UNLOCK; -#endif + pp = erts_thr_id2port_sflgs(rep->port, + ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP); + CHLD_STAT_LOCK; +#else pp = erts_id2port_sflgs(rep->port, NULL, 0, ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP); -#ifdef ERTS_SMP - CHLD_STAT_LOCK; #endif if (pp) { if (rep->ifd >= 0) { driver_data[rep->ifd].alive = 0; driver_data[rep->ifd].status = status; - (void) driver_select((ErlDrvPort) internal_port_index(pp->common.id), + (void) driver_select((ErlDrvPort) pp, rep->ifd, (ERL_DRV_READ|ERL_DRV_USE), 1); @@ -2578,12 +2581,16 @@ report_exit_status(ErtsSysReportExit *rep, int status) if (rep->ofd >= 0) { driver_data[rep->ofd].alive = 0; driver_data[rep->ofd].status = status; - (void) driver_select((ErlDrvPort) internal_port_index(pp->common.id), + (void) driver_select((ErlDrvPort) pp, rep->ofd, (ERL_DRV_WRITE|ERL_DRV_USE), 1); } +#ifdef ERTS_SMP + erts_thr_port_release(pp); +#else erts_port_release(pp); +#endif } erts_free(ERTS_ALC_T_PRT_REP_EXIT, rep); } diff --git a/erts/emulator/sys/vxworks/sys.c b/erts/emulator/sys/vxworks/sys.c index 739b026fb1..205c123ffc 100644 --- a/erts/emulator/sys/vxworks/sys.c +++ b/erts/emulator/sys/vxworks/sys.c @@ -522,7 +522,8 @@ static Uint tmp_buf_size; /* This data is shared by these drivers - initialized by spawn_init() */ static struct driver_data { - int port_num, ofd, packet_bytes, report_exit; + ErlDrvPort port_num; + int ofd, packet_bytes, report_exit; int exitcode, exit_reported; /* For returning of exit codes. */ } *driver_data; /* indexed by fd */ @@ -678,7 +679,7 @@ static int pre_set_driver_data(int ifd, int ofd, ** Set up the driver_data structure, it may have been initiated ** partly by the function above, but we dont care. */ -static int set_driver_data(int port_num, int ifd, int ofd, +static int set_driver_data(ErlDrvPort port_num, int ifd, int ofd, int packet_bytes, int read_write, int report_exit) { @@ -908,7 +909,7 @@ static void close_pipes(int ifd[2], int ofd[2], int read_write) } } -static void init_fd_data(int fd, int port_unused_argument) +static void init_fd_data(int fd, ErlDrvPort port_unused_argument) { SET_NONBLOCKING(fd); fd_data[fd].pending = NULL; @@ -1062,7 +1063,7 @@ static void clear_fd_data(int fd) fd_data[fd].cpos = NULL; } -static void nbio_stop_fd(int port_num, int fd) +static void nbio_stop_fd(ErlDrvPort port_num, int fd) { Pend *p, *p1; @@ -1132,7 +1133,8 @@ vanilla_start(ErlDrvPort port_num, char *name, SysDriverOpts* opts) static void stop(ErlDrvData drv_data) { - int port_num, ofd; + ErlDrvPort port_num; + int ofd; int fd = (int) drv_data; port_num = driver_data[fd].port_num; @@ -1146,7 +1148,7 @@ static void stop(ErlDrvData drv_data) } } -static int sched_write(int port_num,int fd, char *buf, int len, int pb) +static int sched_write(ErlDrvPort port_num,int fd, char *buf, int len, int pb) { Pend *p, *p2, *p3; int p_bytes = len; @@ -1189,7 +1191,8 @@ static int sched_write(int port_num,int fd, char *buf, int len, int pb) /* Fd is the value returned as drv_data by the start func */ static void output(ErlDrvData drv_data, char *buf, ErlDrvSizeT len) { - int buf_done, port_num, wval, pb, ofd; + ErlDrvPort port_num; + int buf_done, wval, pb, ofd; byte lb[4]; struct iovec iv[2]; int fd = (int) drv_data; @@ -1271,7 +1274,7 @@ static int ensure_header(int fd,char *buf,int packet_size, int sofar) return(res); } -static int port_inp_failure(int port_num, int ready_fd, int res) +static int port_inp_failure(ErlDrvPort port_num, int ready_fd, int res) { (void) driver_select(port_num, ready_fd, ERL_DRV_READ|ERL_DRV_WRITE, 0); clear_fd_data(ready_fd); @@ -1302,7 +1305,8 @@ static int port_inp_failure(int port_num, int ready_fd, int res) static void ready_input(ErlDrvData drv_data, ErlDrvEvent drv_event) { - int port_num, packet_bytes, res; + ErlDrvPort port_num; + int packet_bytes, res; Uint h = 0; char *buf; int fd = (int) drv_data; diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c index b106f0932d..c4861b92a2 100755 --- a/erts/emulator/sys/win32/sys.c +++ b/erts/emulator/sys/win32/sys.c @@ -87,9 +87,6 @@ static erts_smp_tsd_key_t win32_errstr_key; static erts_smp_atomic_t pipe_creation_counter; -static erts_smp_mtx_t sys_driver_data_lock; - - /* Results from application_type(_w) is one of */ #define APPL_NONE 0 #define APPL_DOS 1 @@ -97,7 +94,6 @@ static erts_smp_mtx_t sys_driver_data_lock; #define APPL_WIN32 3 static int driver_write(long, HANDLE, byte*, int); -static void common_stop(int); static int create_file_thread(struct async_io* aio, int mode); #ifdef ERTS_SMP static void close_active_handle(ErlDrvPort, HANDLE handle); @@ -115,9 +111,6 @@ BOOL WINAPI ctrl_handler(DWORD dwCtrlType); #define PORT_BUFSIZ 4096 -#define PORT_FREE (-1) -#define PORT_EXITING (-2) - #define DRV_BUF_ALLOC(SZ) \ erts_alloc_fnf(ERTS_ALC_T_DRV_DATA_BUF, (SZ)) #define DRV_BUF_REALLOC(P, SZ) \ @@ -454,7 +447,7 @@ typedef struct driver_data { byte *inbuf; /* Buffer to use for overlapped read. */ int outBufSize; /* Size of output buffer. */ byte *outbuf; /* Buffer to use for overlapped write. */ - ErlDrvPort port_num; /* The port number. */ + ErlDrvPort port_num; /* The port handle. */ int packet_bytes; /* 0: continous stream, 1, 2, or 4: the number * of bytes in the packet header. */ @@ -464,8 +457,6 @@ typedef struct driver_data { int report_exit; /* Do report exit status for the port */ } DriverData; -static DriverData* driver_data; /* Pointer to array of driver data. */ - /* Driver interfaces */ static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*); static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*); @@ -577,67 +568,53 @@ struct erl_drv_entry vanilla_driver_entry = { */ static DriverData* -new_driver_data(int port_num, int packet_bytes, int wait_objs_required, int use_threads) +new_driver_data(ErlDrvPort port_num, int packet_bytes, int wait_objs_required, int use_threads) { DriverData* dp; - - erts_smp_mtx_lock(&sys_driver_data_lock); - DEBUGF(("new_driver_data(port_num %d, pb %d)\n", - port_num, packet_bytes)); + DEBUGF(("new_driver_data(%p, pb %d)\n", port_num, packet_bytes)); + dp = driver_alloc(sizeof(DriverData)); + if (!dp) + return NULL; /* * We used to test first at all that there is enough room in the * array used by WaitForMultipleObjects(), but that is not necessary * any more, since driver_select() can't fail. */ - /* - * Search for a free slot. - */ + dp->bytesInBuffer = 0; + dp->totalNeeded = packet_bytes; + dp->inBufSize = PORT_BUFSIZ; + dp->inbuf = DRV_BUF_ALLOC(dp->inBufSize); + if (dp->inbuf == NULL) + goto buf_alloc_error; + erts_smp_atomic_add_nob(&sys_misc_mem_sz, dp->inBufSize); + dp->outBufSize = 0; + dp->outbuf = NULL; + dp->port_num = port_num; + dp->packet_bytes = packet_bytes; + dp->port_pid = INVALID_HANDLE_VALUE; + if (init_async_io(&dp->in, use_threads) == -1) + goto async_io_error1; + if (init_async_io(&dp->out, use_threads) == -1) + goto async_io_error2; - for (dp = driver_data; dp < driver_data+max_files; dp++) { - if (dp->port_num == PORT_FREE) { - dp->bytesInBuffer = 0; - dp->totalNeeded = packet_bytes; - dp->inBufSize = PORT_BUFSIZ; - dp->inbuf = DRV_BUF_ALLOC(dp->inBufSize); - if (dp->inbuf == NULL) { - erts_smp_mtx_unlock(&sys_driver_data_lock); - return NULL; - } - erts_smp_atomic_add_nob(&sys_misc_mem_sz, dp->inBufSize); - dp->outBufSize = 0; - dp->outbuf = NULL; - dp->port_num = port_num; - dp->packet_bytes = packet_bytes; - dp->port_pid = INVALID_HANDLE_VALUE; - if (init_async_io(&dp->in, use_threads) == -1) - break; - if (init_async_io(&dp->out, use_threads) == -1) - break; - erts_smp_mtx_unlock(&sys_driver_data_lock); - return dp; - } - } + return dp; - /* - * Error or no free driver data. - */ +async_io_error2: + release_async_io(&dp->in, dp->port_num); +async_io_error1: + release_async_io(&dp->out, dp->port_num); - if (dp < driver_data+max_files) { - release_async_io(&dp->in, dp->port_num); - release_async_io(&dp->out, dp->port_num); - } - erts_smp_mtx_unlock(&sys_driver_data_lock); +buf_alloc_error: + driver_free(dp); return NULL; } static void release_driver_data(DriverData* dp) { - erts_smp_mtx_lock(&sys_driver_data_lock); - #ifdef ERTS_SMP #ifdef USE_CANCELIOEX if (fpCancelIoEx != NULL) { @@ -721,8 +698,7 @@ release_driver_data(DriverData* dp) * the exit thread. */ - dp->port_num = PORT_FREE; - erts_smp_mtx_unlock(&sys_driver_data_lock); + driver_free(dp); } #ifdef ERTS_SMP @@ -817,7 +793,6 @@ threaded_handle_closer(LPVOID param) static ErlDrvData set_driver_data(DriverData* dp, HANDLE ifd, HANDLE ofd, int read_write, int report_exit) { - int index = dp - driver_data; int result; dp->in.fd = ifd; @@ -836,13 +811,12 @@ set_driver_data(DriverData* dp, HANDLE ifd, HANDLE ofd, int read_write, int repo ERL_DRV_WRITE|ERL_DRV_USE, 1); ASSERT(result != -1); } - return (ErlDrvData)index; + return (ErlDrvData) dp; } static ErlDrvData reuse_driver_data(DriverData *dp, HANDLE ifd, HANDLE ofd, int read_write, ErlDrvPort port_num) { - int index = dp - driver_data; int result; dp->port_num = port_num; @@ -861,7 +835,7 @@ reuse_driver_data(DriverData *dp, HANDLE ifd, HANDLE ofd, int read_write, ErlDrv ERL_DRV_WRITE|ERL_DRV_USE, 1); ASSERT(result != -1); } - return (ErlDrvData)index; + return (ErlDrvData) dp; } /* @@ -1118,12 +1092,6 @@ spawn_init(void) ((module != NULL) ? GetProcAddress(module,"CancelIoEx") : NULL); DEBUGF(("fpCancelIoEx = %p\r\n", fpCancelIoEx)); #endif - driver_data = (struct driver_data *) - erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data)); - erts_smp_atomic_add_nob(&sys_misc_mem_sz, - max_files*sizeof(struct driver_data)); - for (i = 0; i < max_files; i++) - driver_data[i].port_num = PORT_FREE; return 0; } @@ -2187,12 +2155,10 @@ fd_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts) return ERL_DRV_ERROR_GENERAL; if (!create_file_thread(&dp->in, DO_READ)) { - dp->port_num = PORT_FREE; return ERL_DRV_ERROR_GENERAL; } if (!create_file_thread(&dp->out, DO_WRITE)) { - dp->port_num = PORT_FREE; return ERL_DRV_ERROR_GENERAL; } @@ -2212,10 +2178,9 @@ fd_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts) } } -static void fd_stop(ErlDrvData d) +static void fd_stop(ErlDrvData data) { - int fd = (int)d; - DriverData* dp = driver_data+fd; + DriverData * dp = (DriverData *) data; /* * There's no way we can terminate an fd port in a consistent way. * Instead we let it live until it's opened again (which it is, @@ -2276,16 +2241,10 @@ vanilla_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts) } static void -stop(ErlDrvData index) -{ - common_stop((int)index); -} - -static void common_stop(int index) +stop(ErlDrvData data) { - DriverData* dp = driver_data+index; - - DEBUGF(("common_stop(%d)\n", index)); + DriverData *dp = (DriverData *) data; + DEBUGF(("stop(%p)\n", dp)); if (dp->in.ov.hEvent != NULL) { (void) driver_select(dp->port_num, @@ -2307,7 +2266,6 @@ static void common_stop(int index) */ HANDLE thread; DWORD tid; - dp->port_num = PORT_EXITING; thread = (HANDLE *) _beginthreadex(NULL, 0, threaded_exiter, dp, 0, &tid); CloseHandle(thread); } @@ -2432,22 +2390,17 @@ threaded_exiter(LPVOID param) static void output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len) -/* long drv_data; /* The slot to use in the driver data table. +/* ErlDrvData drv_data; /* The slot to use in the driver data table. * For Windows NT, this is *NOT* a file handle. * The handle is found in the driver data. */ /* char *buf; /* Pointer to data to write to the port program. */ /* ErlDrvSizeT len; /* Number of bytes to write. */ { - DriverData* dp; + DriverData* dp = (DriverData *) drv_data; int pb; /* The header size for this port. */ - int port_num; /* The actual port number (for diagnostics). */ char* current; - dp = driver_data + (int)drv_data; - if ((port_num = dp->port_num) == -1) - return ; /*-1;*/ - pb = dp->packet_bytes; if ((pb+len) == 0) @@ -2458,7 +2411,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len) */ if ((pb == 2 && len > 65535) || (pb == 1 && len > 255)) { - driver_failure_posix(port_num, EINVAL); + driver_failure_posix(dp->port_num, EINVAL); return ; /* -1; */ } @@ -2472,7 +2425,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len) ASSERT(!dp->outbuf); dp->outbuf = DRV_BUF_ALLOC(pb+len); if (!dp->outbuf) { - driver_failure_posix(port_num, ENOMEM); + driver_failure_posix(dp->port_num, ENOMEM); return ; /* -1; */ } @@ -2502,7 +2455,7 @@ output(ErlDrvData drv_data, char* buf, ErlDrvSizeT len) memcpy(current, buf, len); if (!async_write_file(&dp->out, dp->outbuf, pb+len)) { - set_busy_port(port_num, 1); + set_busy_port(dp->port_num, 1); } else { dp->out.ov.Offset += pb+len; /* For vanilla driver. */ /* XXX OffsetHigh should be changed too. */ @@ -2537,10 +2490,9 @@ ready_input(ErlDrvData drv_data, ErlDrvEvent ready_event) { int error = 0; /* The error code (assume initially no errors). */ DWORD bytesRead; /* Number of bytes read. */ - DriverData* dp; + DriverData* dp = (DriverData *) drv_data; int pb; - dp = driver_data+(int)drv_data; pb = dp->packet_bytes; #ifdef ERTS_SMP if(dp->in.thread == (HANDLE) -1) { @@ -2708,7 +2660,7 @@ static void ready_output(ErlDrvData drv_data, ErlDrvEvent ready_event) { DWORD bytesWritten; - DriverData* dp = driver_data + (int)drv_data; + DriverData *dp = (DriverData *) drv_data; int error; #ifdef ERTS_SMP @@ -2716,7 +2668,7 @@ ready_output(ErlDrvData drv_data, ErlDrvEvent ready_event) dp->out.async_io_active = 0; } #endif - DEBUGF(("ready_output(%d, 0x%x)\n", drv_data, ready_event)); + DEBUGF(("ready_output(%p, 0x%x)\n", drv_data, ready_event)); set_busy_port(dp->port_num, 0); if (!(dp->outbuf)) { /* Happens because event sometimes get signalled during a successful @@ -2771,7 +2723,7 @@ sys_init_io(void) can change our view of the number of open files possible. We estimate the number to twice the amount of ports. We really dont know on windows, do we? */ - max_files = 2*erts_max_ports; + max_files = 2*erts_ptab_max(&erts_port); } #ifdef ERTS_SMP @@ -3225,9 +3177,6 @@ void erl_sys_init(void) noinherit_std_handle(STD_INPUT_HANDLE); noinherit_std_handle(STD_ERROR_HANDLE); - - erts_smp_mtx_init(&sys_driver_data_lock, "sys_driver_data_lock"); - #ifdef ERTS_SMP erts_smp_tsd_key_create(&win32_errstr_key); InitializeCriticalSection(&htbc_lock); -- cgit v1.2.3