diff options
Diffstat (limited to 'erts/emulator/beam/io.c')
| -rw-r--r-- | erts/emulator/beam/io.c | 185 |
1 files changed, 180 insertions, 5 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c index fb1514a147..8a2a43bebd 100644 --- a/erts/emulator/beam/io.c +++ b/erts/emulator/beam/io.c @@ -43,6 +43,7 @@ #include "erl_version.h" #include "error.h" #include "erl_async.h" +#include "dtrace-wrapper.h" extern ErlDrvEntry fd_driver_entry; extern ErlDrvEntry vanilla_driver_entry; @@ -180,6 +181,20 @@ typedef struct line_buf_context { #define LINEBUF_INITIAL 100 +#ifdef USE_VM_PROBES +#define DTRACE_FORMAT_COMMON_PID_AND_PORT(PID, PORT) \ + DTRACE_CHARBUF(process_str, DTRACE_TERM_BUF_SIZE); \ + DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE); \ + \ + dtrace_pid_str((PID), process_str); \ + dtrace_port_str((PORT), port_str); +#define DTRACE_FORMAT_COMMON_PROC_AND_PORT(PID, PORT) \ + DTRACE_CHARBUF(process_str, DTRACE_TERM_BUF_SIZE); \ + DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE); \ + \ + dtrace_proc_str((PID), process_str); \ + dtrace_port_str((PORT), port_str); +#endif /* The 'number' field in a port now has two parts: the lowest bits contain the index in the port table, and the higher bits are a counter @@ -639,6 +654,12 @@ erts_open_driver(erts_driver_t* driver, /* Pointer to driver. */ trace_sched_ports_where(port, am_in, am_start); } port->caller = pid; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_start)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(pid, port) + DTRACE3(driver_start, process_str, driver->name, port_str); + } +#endif fpe_was_unmasked = erts_block_fpe(); drv_data = (*driver->start)((ErlDrvPort)(port_ix), name, opts); @@ -1170,6 +1191,12 @@ int erts_write_to_port(Eterm caller_id, Port *p, Eterm list) ev.size = size; /* total size */ ev.iov = ivp; ev.binv = bvp; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_outputv)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(caller_id, p) + DTRACE4(driver_outputv, process_str, port_str, p->name, size); + } +#endif fpe_was_unmasked = erts_block_fpe(); (*drv->outputv)((ErlDrvData)p->drv_data, &ev); erts_unblock_fpe(fpe_was_unmasked); @@ -1189,8 +1216,21 @@ int erts_write_to_port(Eterm caller_id, Port *p, Eterm list) buf = erts_alloc(ERTS_ALC_T_TMP, size+1); r = io_list_to_buf(list, buf, size); +#ifdef USE_VM_PROBES + if(DTRACE_ENABLED(port_command)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(caller_id, p) + DTRACE4(port_command, process_str, port_str, p->name, "command"); + } +#endif + if (r >= 0) { size -= r; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_output)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(caller_id, p) + DTRACE4(driver_output, process_str, port_str, p->name, size); + } +#endif fpe_was_unmasked = erts_block_fpe(); (*drv->output)((ErlDrvData)p->drv_data, buf, size); erts_unblock_fpe(fpe_was_unmasked); @@ -1214,6 +1254,12 @@ int erts_write_to_port(Eterm caller_id, Port *p, Eterm list) */ buf = erts_alloc(ERTS_ALC_T_TMP, size+1); r = io_list_to_buf(list, buf, size); +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_output)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(caller_id, p) + DTRACE4(driver_output, process_str, port_str, p->name, size); + } +#endif fpe_was_unmasked = erts_block_fpe(); (*drv->output)((ErlDrvData)p->drv_data, buf, size); erts_unblock_fpe(fpe_was_unmasked); @@ -1529,7 +1575,11 @@ deliver_result(Eterm sender, Eterm pid, Eterm res) hp = erts_alloc_message_heap(sz_res + 3, &bp, &ohp, rp, &rp_locks); res = copy_struct(res, sz_res, &hp, ohp); tuple = TUPLE2(hp, sender, res); - erts_queue_message(rp, &rp_locks, bp, tuple, NIL); + erts_queue_message(rp, &rp_locks, bp, tuple, NIL +#ifdef USE_VM_PROBES + , NIL +#endif + ); erts_smp_proc_unlock(rp, rp_locks); erts_smp_proc_dec_refc(rp); } @@ -1618,7 +1668,11 @@ static void deliver_read_message(Port* prt, Eterm to, tuple = TUPLE2(hp, prt->id, tuple); hp += 3; - erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined); + erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined +#ifdef USE_VM_PROBES + , NIL +#endif + ); erts_smp_proc_unlock(rp, rp_locks); erts_smp_proc_dec_refc(rp); } @@ -1771,7 +1825,11 @@ deliver_vec_message(Port* prt, /* Port */ tuple = TUPLE2(hp, prt->id, tuple); hp += 3; - erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined); + erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined +#ifdef USE_VM_PROBES + , NIL +#endif + ); erts_smp_proc_unlock(rp, rp_locks); erts_smp_proc_dec_refc(rp); } @@ -1810,6 +1868,12 @@ static void flush_port(Port *p) ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(p)); if (p->drv_ptr->flush != NULL) { +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_flush)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(p->connected, p) + DTRACE3(driver_flush, process_str, port_str, p->name); + } +#endif if (IS_TRACED_FL(p, F_TRACE_SCHED_PORTS)) { trace_sched_ports_where(p, am_in, am_flush); } @@ -1865,6 +1929,12 @@ terminate_port(Port *prt) drv = prt->drv_ptr; if ((drv != NULL) && (drv->stop != NULL)) { int fpe_was_unmasked = erts_block_fpe(); +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_stop)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(prt->connected, prt) + DTRACE3(driver_stop, process_str, drv->name, port_str); + } +#endif (*drv->stop)((ErlDrvData)prt->drv_data); erts_unblock_fpe(fpe_was_unmasked); #ifdef ERTS_SMP @@ -2026,6 +2096,19 @@ erts_do_exit_port(Port *p, Eterm from, Eterm reason) rreason = (reason == am_kill) ? am_killed : reason; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(port_exit)) { + DTRACE_CHARBUF(from_str, DTRACE_TERM_BUF_SIZE); + DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE); + DTRACE_CHARBUF(rreason_str, 64); + + erts_snprintf(from_str, sizeof(from_str), "%T", from); + dtrace_port_str(p, port_str); + erts_snprintf(rreason_str, sizeof(rreason_str), "%T", rreason); + DTRACE4(port_exit, from_str, port_str, p->name, rreason_str); + } +#endif + if ((p->status & (ERTS_PORT_SFLGS_DEAD | ERTS_PORT_SFLG_EXITING | ERTS_PORT_SFLG_IMMORTAL)) @@ -2126,6 +2209,13 @@ void erts_port_command(Process *proc, if (tp[2] == am_close) { erts_port_status_bor_set(port, ERTS_PORT_SFLG_SEND_CLOSED); erts_do_exit_port(port, pid, am_normal); + +#ifdef USE_VM_PROBES + if(DTRACE_ENABLED(port_command)) { + DTRACE_FORMAT_COMMON_PROC_AND_PORT(proc, port) + DTRACE4(port_command, process_str, port_str, port->name, "close"); + } +#endif goto done; } else if (is_tuple_arity(tp[2], 2)) { tp = tuple_val(tp[2]); @@ -2133,6 +2223,12 @@ void erts_port_command(Process *proc, if (erts_write_to_port(caller_id, port, tp[2]) == 0) goto done; } else if ((tp[1] == am_connect) && is_internal_pid(tp[2])) { +#ifdef USE_VM_PROBES + if(DTRACE_ENABLED(port_command)) { + DTRACE_FORMAT_COMMON_PROC_AND_PORT(proc, port) + DTRACE4(port_command, process_str, port_str, port->name, "connect"); + } +#endif port->connected = tp[2]; deliver_result(port->id, pid, am_connected); goto done; @@ -2235,6 +2331,15 @@ erts_port_control(Process* p, Port* prt, Uint command, Eterm iolist) erts_smp_proc_unlock(p, ERTS_PROC_LOCK_MAIN); ERTS_SMP_CHK_NO_PROC_LOCKS; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(port_control) || DTRACE_ENABLED(driver_control)) { + DTRACE_FORMAT_COMMON_PROC_AND_PORT(p, prt); + DTRACE4(port_control, process_str, port_str, prt->name, command); + DTRACE5(driver_control, process_str, port_str, prt->name, + command, to_len); + } +#endif + /* * Call the port's control routine. */ @@ -2375,6 +2480,10 @@ print_port_info(int to, void *arg, int i) void set_busy_port(ErlDrvPort port_num, int on) { +#ifdef USE_VM_PROBES + DTRACE_CHARBUF(port_str, 16); +#endif + ERTS_SMP_CHK_NO_PROC_LOCKS; ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(&erts_port[port_num])); @@ -2382,12 +2491,26 @@ set_busy_port(ErlDrvPort port_num, int on) if (on) { erts_port_status_bor_set(&erts_port[port_num], ERTS_PORT_SFLG_PORT_BUSY); +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(port_busy)) { + erts_snprintf(port_str, sizeof(port_str), + "%T", erts_port[port_num].id); + DTRACE1(port_busy, port_str); + } +#endif } else { ErtsProcList* plp = erts_port[port_num].suspended; erts_port_status_band_set(&erts_port[port_num], ~ERTS_PORT_SFLG_PORT_BUSY); erts_port[port_num].suspended = NULL; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(port_not_busy)) { + erts_snprintf(port_str, sizeof(port_str), + "%T", erts_port[port_num].id); + DTRACE1(port_not_busy, port_str); + } +#endif if (erts_port[port_num].dist_entry) { /* * Processes suspended on distribution ports are @@ -2405,6 +2528,28 @@ set_busy_port(ErlDrvPort port_num, int on) */ if (plp) { +#ifdef USE_VM_PROBES + /* + * Hrm, for blocked dist ports, plp always seems to be NULL. + * That's not so fun. + * Well, another way to get the same info is using a D + * script to correlate an earlier process-port_blocked+pid + * event with a later process-scheduled event. That's + * subject to the multi-CPU races with how events are + * handled, but hey, that way works most of the time. + */ + if (DTRACE_ENABLED(process_port_unblocked)) { + DTRACE_CHARBUF(pid_str, 16); + ErtsProcList* plp2 = plp; + + erts_snprintf(port_str, sizeof(port_str), + "%T", erts_port[port_num]); + while (plp2 != NULL) { + erts_snprintf(pid_str, sizeof(pid_str), "%T", plp2->pid); + DTRACE2(process_port_unblocked, pid_str, port_str); + } + } +#endif /* First proc should be resumed last */ if (plp->next) { erts_resume_processes(plp->next); @@ -2451,6 +2596,14 @@ void erts_raw_port_command(Port* p, byte* buf, Uint len) p->drv_ptr->name ? p->drv_ptr->name : "unknown"); p->caller = NIL; +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_output)) { + DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE); + + dtrace_port_str(p, port_str); + DTRACE4(driver_output, "-raw-", port_str, p->name, len); + } +#endif fpe_was_unmasked = erts_block_fpe(); (*p->drv_ptr->output)((ErlDrvData)p->drv_data, (char*) buf, (int) len); erts_unblock_fpe(fpe_was_unmasked); @@ -2466,6 +2619,12 @@ int async_ready(Port *p, void* data) ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(p)); ASSERT(!(p->status & ERTS_PORT_SFLGS_DEAD)); if (p->drv_ptr->ready_async != NULL) { +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_ready_async)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(p->connected, p) + DTRACE3(driver_ready_async, process_str, port_str, p->name); + } +#endif (*p->drv_ptr->ready_async)((ErlDrvData)p->drv_data, data); need_free = 0; #ifdef ERTS_SMP @@ -2660,7 +2819,11 @@ void driver_report_exit(int ix, int status) hp += 3; tuple = TUPLE2(hp, prt->id, tuple); - erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined); + erts_queue_message(rp, &rp_locks, bp, tuple, am_undefined +#ifdef USE_VM_PROBES + , NIL +#endif + ); erts_smp_proc_unlock(rp, rp_locks); erts_smp_proc_dec_refc(rp); @@ -3210,7 +3373,11 @@ driver_deliver_term(ErlDrvPort port, HRelease(rp, hp_end, hp); } /* send message */ - erts_queue_message(rp, &rp_locks, bp, mess, am_undefined); + erts_queue_message(rp, &rp_locks, bp, mess, am_undefined +#ifdef USE_VM_PROBES + , NIL +#endif + ); } else { if (b2t.ix > b2t.used) @@ -4441,6 +4608,12 @@ void erts_fire_port_monitor(Port *prt, Eterm ref) ASSERT(callback != NULL); ref_to_driver_monitor(ref,&drv_monitor); DRV_MONITOR_UNLOCK_PDL(prt); +#ifdef USE_VM_PROBES + if (DTRACE_ENABLED(driver_process_exit)) { + DTRACE_FORMAT_COMMON_PID_AND_PORT(prt->connected, prt) + DTRACE3(driver_process_exit, process_str, port_str, prt->name); + } +#endif fpe_was_unmasked = erts_block_fpe(); (*callback)((ErlDrvData) (prt->drv_data), &drv_monitor); erts_unblock_fpe(fpe_was_unmasked); @@ -4884,6 +5057,8 @@ init_driver(erts_driver_t *drv, ErlDrvEntry *de, DE_Handle *handle) else { int res; int fpe_was_unmasked = erts_block_fpe(); + DTRACE4(driver_init, drv->name, drv->version.major, drv->version.minor, + drv->flags); res = (*de->init)(); erts_unblock_fpe(fpe_was_unmasked); return res; |