aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/io.c
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/io.c')
-rw-r--r--erts/emulator/beam/io.c340
1 files changed, 320 insertions, 20 deletions
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 6179720f97..de73da8e22 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -47,6 +47,7 @@
#define ERTS_WANT_EXTERNAL_TAGS
#include "external.h"
#include "dtrace-wrapper.h"
+#include "lttng-wrapper.h"
#include "erl_map.h"
#include "erl_bif_unique.h"
#include "erl_hl_timer.h"
@@ -397,7 +398,7 @@ static Port *create_port(char *name,
prt->common.u.alive.reg = NULL;
ERTS_PTMR_INIT(prt);
erts_port_task_handle_init(&prt->timeout_task);
- prt->psd = NULL;
+ erts_smp_atomic_init_nob(&prt->psd, (erts_aint_t) NULL);
prt->async_open_port = NULL;
prt->drv_data = (SWord) 0;
prt->os_pid = -1;
@@ -717,7 +718,19 @@ erts_open_driver(erts_driver_t* driver, /* Pointer to driver. */
DTRACE3(driver_start, process_str, driver->name, port_str);
}
#endif
+
ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_PORT);
+
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_start)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(pid, proc_str);
+ lttng_port_to_str(port, port_str);
+ LTTNG3(driver_start, proc_str, driver->name, port_str);
+ }
+#endif
+
fpe_was_unmasked = erts_block_fpe();
drv_data = (*driver->start)(ERTS_Port2ErlDrvPort(port), name, opts);
if (((SWord) drv_data) == -1)
@@ -1542,8 +1555,19 @@ erts_schedule_proc2port_signal(Process *c_p,
erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
if (sched_res != 0) {
- if (refp)
+ if (refp) {
+ /*
+ * We need to restore the message queue save
+ * pointer to the beginning of the message queue
+ * since the caller now wont wait for a message
+ * containing the reference created above...
+ */
+ ASSERT(c_p);
+ erts_smp_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
+ JOIN_MESSAGE(c_p);
+ erts_smp_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
*refp = NIL;
+ }
return ERTS_PORT_OP_DROPPED;
}
return ERTS_PORT_OP_SCHEDULED;
@@ -1724,6 +1748,15 @@ call_driver_outputv(int bang_op,
DTRACE4(driver_outputv, process_str, port_str, prt->name, size);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_outputv)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(caller, proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG4(driver_outputv, proc_str, port_str, prt->name, size);
+ }
+#endif
prt->caller = caller;
(*drv->outputv)((ErlDrvData) prt->drv_data, evp);
@@ -1749,7 +1782,6 @@ cleanup_scheduled_outputv(ErlIOVec *ev, ErlDrvBinary *cbinp)
driver_free_binary(ev->binv[i]);
if (cbinp)
driver_free_binary(cbinp);
- erts_free(ERTS_ALC_T_DRV_CMD_DATA, ev);
}
static int
@@ -1826,6 +1858,15 @@ call_driver_output(int bang_op,
DTRACE4(driver_output, process_str, port_str, prt->name, size);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_output)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(caller, proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG4(driver_output, proc_str, port_str, prt->name, size);
+ }
+#endif
prt->caller = caller;
(*drv->output)((ErlDrvData) prt->drv_data, bufp, size);
@@ -1887,6 +1928,188 @@ port_sig_output(Port *prt, erts_aint32_t state, int op, ErtsProc2PortSigData *si
return ERTS_PORT_REDS_CMD_OUTPUT;
}
+
+/*
+ * This erts_port_output will always create a port task.
+ * The call is treated as a port_command call, i.e. no
+ * badsig i generated if the input in invalid. However
+ * an error_logger message is generated.
+ */
+int
+erts_port_output_async(Port *prt, Eterm from, Eterm list)
+{
+
+ ErtsPortOpResult res;
+ ErtsProc2PortSigData *sigdp;
+ erts_driver_t *drv = prt->drv_ptr;
+ size_t size;
+ int task_flags;
+ ErtsProc2PortSigCallback port_sig_callback;
+ ErlDrvBinary *cbin = NULL;
+ ErlIOVec *evp = NULL;
+ char *buf = NULL;
+ ErtsPortTaskHandle *ns_pthp;
+
+ if (drv->outputv) {
+ ErlIOVec ev;
+ SysIOVec* ivp;
+ ErlDrvBinary** bvp;
+ int vsize;
+ Uint csize;
+ Uint pvsize;
+ Uint pcsize;
+ size_t iov_offset, binv_offset, alloc_size;
+ Uint blimit = 0;
+ char *ptr;
+ int i;
+
+ Eterm* bptr = NULL;
+ Uint offset;
+
+ if (is_binary(list)) {
+ /* We optimize for when we get a procbin without offset */
+ Eterm real_bin;
+ int bitoffs;
+ int bitsize;
+ ERTS_GET_REAL_BIN(list, real_bin, offset, bitoffs, bitsize);
+ bptr = binary_val(real_bin);
+ if (*bptr == HEADER_PROC_BIN && bitoffs == 0) {
+ size = binary_size(list);
+ vsize = 1;
+ } else
+ bptr = NULL;
+ }
+
+ if (!bptr) {
+ if (io_list_vec_len(list, &vsize, &csize, &pvsize, &pcsize, &size))
+ goto bad_value;
+
+ /* To pack or not to pack (small binaries) ...? */
+ if (vsize >= SMALL_WRITE_VEC) {
+ /* Do pack */
+ vsize = pvsize + 1;
+ csize = pcsize;
+ blimit = ERL_SMALL_IO_BIN_LIMIT;
+ }
+ cbin = driver_alloc_binary(csize);
+ if (!cbin)
+ erts_alloc_enomem(ERTS_ALC_T_DRV_BINARY, ERTS_SIZEOF_Binary(csize));
+ }
+
+
+ iov_offset = ERTS_ALC_DATA_ALIGN_SIZE(sizeof(ErlIOVec));
+ binv_offset = iov_offset;
+ binv_offset += ERTS_ALC_DATA_ALIGN_SIZE((vsize+1)*sizeof(SysIOVec));
+ alloc_size = binv_offset;
+ alloc_size += (vsize+1)*sizeof(ErlDrvBinary *);
+
+ sigdp = erts_port_task_alloc_p2p_sig_data_extra(alloc_size, (void**)&ptr);
+
+ evp = (ErlIOVec *) ptr;
+ ivp = evp->iov = (SysIOVec *) (ptr + iov_offset);
+ bvp = evp->binv = (ErlDrvBinary **) (ptr + binv_offset);
+
+ ivp[0].iov_base = NULL;
+ ivp[0].iov_len = 0;
+ bvp[0] = NULL;
+
+ if (bptr) {
+ ProcBin* pb = (ProcBin *) bptr;
+
+ ivp[1].iov_base = pb->bytes+offset;
+ ivp[1].iov_len = size;
+ bvp[1] = Binary2ErlDrvBinary(pb->val);
+
+ evp->vsize = 1;
+ } else {
+
+ evp->vsize = io_list_to_vec(list, ivp+1, bvp+1, cbin, blimit);
+ if (evp->vsize < 0) {
+ if (evp != &ev)
+ erts_free(ERTS_ALC_T_DRV_CMD_DATA, evp);
+ driver_free_binary(cbin);
+ goto bad_value;
+ }
+ }
+#if 0
+ /* This assertion may say something useful, but it can
+ be falsified during the emulator test suites. */
+ ASSERT(evp->vsize == vsize);
+#endif
+ evp->vsize++;
+ evp->size = size; /* total size */
+
+ /* Need to increase refc on all binaries */
+ for (i = 1; i < evp->vsize; i++)
+ if (bvp[i])
+ driver_binary_inc_refc(bvp[i]);
+
+ sigdp->flags = ERTS_P2P_SIG_TYPE_OUTPUTV;
+ sigdp->u.outputv.from = from;
+ sigdp->u.outputv.evp = evp;
+ sigdp->u.outputv.cbinp = cbin;
+ port_sig_callback = port_sig_outputv;
+ } else {
+ ErlDrvSizeT ERTS_DECLARE_DUMMY(r);
+
+ /*
+ * Apperently there exist code that write 1 byte to
+ * much in buffer. Where it resides I don't know, but
+ * we can live with one byte extra allocated...
+ */
+
+ if (erts_iolist_size(list, &size))
+ goto bad_value;
+
+ buf = erts_alloc(ERTS_ALC_T_DRV_CMD_DATA, size + 1);
+
+ r = erts_iolist_to_buf(list, buf, size);
+ ASSERT(ERTS_IOLIST_TO_BUF_SUCCEEDED(r));
+
+ sigdp = erts_port_task_alloc_p2p_sig_data();
+ sigdp->flags = ERTS_P2P_SIG_TYPE_OUTPUT;
+ sigdp->u.output.from = from;
+ sigdp->u.output.bufp = buf;
+ sigdp->u.output.size = size;
+ port_sig_callback = port_sig_output;
+ }
+ sigdp->flags = 0;
+ ns_pthp = NULL;
+ task_flags = 0;
+
+ res = erts_schedule_proc2port_signal(NULL,
+ prt,
+ ERTS_INVALID_PID,
+ NULL,
+ sigdp,
+ task_flags,
+ ns_pthp,
+ port_sig_callback);
+
+ if (res != ERTS_PORT_OP_SCHEDULED) {
+ if (drv->outputv)
+ cleanup_scheduled_outputv(evp, cbin);
+ else
+ cleanup_scheduled_output(buf);
+ return 1;
+ }
+ return 1;
+
+bad_value:
+
+ /*
+ * We call badsig directly here as this function is called with
+ * the main lock of the calling process still held.
+ * At the moment this operation is always not a bang_op, so
+ * only an error_logger message should be generated, no badsig.
+ */
+
+ badsig_received(0, prt, erts_atomic32_read_nob(&prt->state), 1);
+
+ return 0;
+
+}
+
ErtsPortOpResult
erts_port_output(Process *c_p,
int flags,
@@ -1896,7 +2119,7 @@ erts_port_output(Process *c_p,
Eterm *refp)
{
ErtsPortOpResult res;
- ErtsProc2PortSigData *sigdp;
+ ErtsProc2PortSigData *sigdp = NULL;
erts_driver_t *drv = prt->drv_ptr;
size_t size;
int try_call;
@@ -1949,7 +2172,6 @@ erts_port_output(Process *c_p,
DTRACE4(port_command, process_str, port_str, prt->name, "command");
}
#endif
-
if (drv->outputv) {
ErlIOVec ev;
SysIOVec iv[SMALL_WRITE_VEC];
@@ -1978,10 +2200,13 @@ erts_port_output(Process *c_p,
evp = &ev;
}
else {
- char *ptr = erts_alloc((try_call
- ? ERTS_ALC_T_TMP
- : ERTS_ALC_T_DRV_CMD_DATA), alloc_size);
-
+ char *ptr;
+ if (try_call) {
+ ptr = erts_alloc(ERTS_ALC_T_TMP, alloc_size);
+ } else {
+ sigdp = erts_port_task_alloc_p2p_sig_data_extra(
+ alloc_size, (void**)&ptr);
+ }
evp = (ErlIOVec *) ptr;
ivp = evp->iov = (SysIOVec *) (ptr + iov_offset);
bvp = evp->binv = (ErlDrvBinary **) (ptr + binv_offset);
@@ -2010,9 +2235,12 @@ erts_port_output(Process *c_p,
bvp[0] = NULL;
evp->vsize = io_list_to_vec(list, ivp+1, bvp+1, cbin, blimit);
if (evp->vsize < 0) {
- if (evp != &ev)
- erts_free(try_call ? ERTS_ALC_T_TMP : ERTS_ALC_T_DRV_CMD_DATA,
- evp);
+ if (evp != &ev) {
+ if (try_call)
+ erts_free(ERTS_ALC_T_TMP, evp);
+ else
+ erts_port_task_free_p2p_sig_data(sigdp);
+ }
driver_free_binary(cbin);
goto bad_value;
}
@@ -2064,8 +2292,10 @@ erts_port_output(Process *c_p,
/* Fall through... */
case ERTS_TRY_IMM_DRV_CALL_INVALID_PORT:
driver_free_binary(cbin);
- if (evp != &ev)
+ if (evp != &ev) {
+ ASSERT(!sigdp);
erts_free(ERTS_ALC_T_TMP, evp);
+ }
if (try_call_res != ERTS_TRY_IMM_DRV_CALL_OK)
return ERTS_PORT_OP_DROPPED;
if (c_p)
@@ -2076,8 +2306,10 @@ erts_port_output(Process *c_p,
if (async_nosuspend
&& (sched_flags & (busy_flgs|ERTS_PTS_FLG_EXIT))) {
driver_free_binary(cbin);
- if (evp != &ev)
+ if (evp != &ev) {
+ ASSERT(!sigdp);
erts_free(ERTS_ALC_T_TMP, evp);
+ }
return ((sched_flags & ERTS_PTS_FLG_EXIT)
? ERTS_PORT_OP_DROPPED
: ERTS_PORT_OP_BUSY);
@@ -2092,9 +2324,16 @@ erts_port_output(Process *c_p,
if (bvp[i])
driver_binary_inc_refc(bvp[i]);
- new_evp = erts_alloc(ERTS_ALC_T_DRV_CMD_DATA, alloc_size);
+ /* The port task and iovec is allocated in the
+ same structure as an optimization. This
+ is especially important in erts_port_output_async
+ of when !try_call */
+ ASSERT(sigdp == NULL);
+ sigdp = erts_port_task_alloc_p2p_sig_data_extra(
+ alloc_size, (void**)&new_evp);
if (evp != &ev) {
+ /* Copy from TMP alloc to port task */
sys_memcpy((void *) new_evp, (void *) evp, alloc_size);
new_evp->iov = (SysIOVec *) (((char *) new_evp)
+ iov_offset);
@@ -2142,7 +2381,6 @@ erts_port_output(Process *c_p,
evp = new_evp;
}
- sigdp = erts_port_task_alloc_p2p_sig_data();
sigdp->flags = ERTS_P2P_SIG_TYPE_OUTPUTV;
sigdp->u.outputv.from = from;
sigdp->u.outputv.evp = evp;
@@ -3489,6 +3727,17 @@ static void flush_port(Port *p)
DTRACE3(driver_flush, process_str, port_str, p->name);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_flush)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(ERTS_PORT_GET_CONNECTED(p), proc_str);
+ lttng_port_to_str(p, port_str);
+ LTTNG3(driver_flush, proc_str, port_str, p->name);
+ }
+#endif
+
+
if (IS_TRACED_FL(p, F_TRACE_SCHED_PORTS)) {
trace_sched_ports_where(p, am_in, am_flush);
}
@@ -3520,6 +3769,7 @@ terminate_port(Port *prt)
Eterm connected_id = NIL /* Initialize to silence compiler */;
erts_driver_t *drv;
erts_aint32_t state;
+ ErtsPrtSD *psd;
ERTS_SMP_CHK_NO_PROC_LOCKS;
ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt));
@@ -3551,6 +3801,16 @@ terminate_port(Port *prt)
DTRACE3(driver_stop, process_str, drv->name, port_str);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_stop)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(connected_id, proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG3(driver_stop, proc_str, drv->name, port_str);
+ }
+#endif
+
(*drv->stop)((ErlDrvData)prt->drv_data);
erts_unblock_fpe(fpe_was_unmasked);
ERTS_MSACC_POP_STATE_M();
@@ -3573,8 +3833,9 @@ terminate_port(Port *prt)
erts_cleanup_port_data(prt);
- if (prt->psd)
- erts_free(ERTS_ALC_T_PRTSD, prt->psd);
+ psd = (ErtsPrtSD *) erts_smp_atomic_read_nob(&prt->psd);
+ if (psd)
+ erts_free(ERTS_ALC_T_PRTSD, psd);
ASSERT(prt->dist_entry == NULL);
@@ -3881,6 +4142,16 @@ call_driver_control(Eterm caller,
ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_PORT);
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_control)) {
+ lttng_decl_procbuf(proc_str);
+ lttng_decl_portbuf(port_str);
+ lttng_pid_to_str(caller, proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG5(driver_control, proc_str, port_str, prt->name, command, size);
+ }
+#endif
+
prt->caller = caller;
cres = prt->drv_ptr->control((ErlDrvData) prt->drv_data,
command,
@@ -4294,6 +4565,15 @@ call_driver_call(Eterm caller,
DTRACE5(driver_call, process_str, port_str, prt->name, command, size);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_call)) {
+ lttng_decl_procbuf(proc_str);
+ lttng_decl_portbuf(port_str);
+ lttng_pid_to_str(caller,proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG5(driver_call, proc_str, port_str, prt->name, command, size);
+ }
+#endif
ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_PORT);
@@ -4373,7 +4653,7 @@ port_sig_call(Port *prt,
(void) erts_factory_message_create(&factory, rp, &rp_locks, hsz);
endp = (byte *) resp_bufp;
- msg = erts_decode_ext(&factory, &endp);
+ msg = erts_decode_ext(&factory, &endp, 0);
if (is_value(msg)) {
hp = erts_produce_heap(&factory,
3,
@@ -4492,7 +4772,7 @@ erts_port_call(Process* c_p,
hsz += 3;
erts_factory_proc_prealloc_init(&factory, c_p, hsz);
endp = (byte *) resp_bufp;
- term = erts_decode_ext(&factory, &endp);
+ term = erts_decode_ext(&factory, &endp, 0);
if (term == THE_NON_VALUE)
return ERTS_PORT_OP_BADARG;
hp = erts_produce_heap(&factory,3,0);
@@ -5056,6 +5336,15 @@ int async_ready(Port *p, void* data)
DTRACE3(driver_ready_async, process_str, port_str, p->name);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_ready_async)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(ERTS_PORT_GET_CONNECTED(p), proc_str);
+ lttng_port_to_str(p, port_str);
+ LTTNG3(driver_ready_async, proc_str, port_str, p->name);
+ }
+#endif
(*p->drv_ptr->ready_async)((ErlDrvData)p->drv_data, data);
need_free = 0;
ERTS_MSACC_POP_STATE_M();
@@ -7102,6 +7391,15 @@ void erts_fire_port_monitor(Port *prt, Eterm ref)
DTRACE3(driver_process_exit, process_str, port_str, prt->name);
}
#endif
+#ifdef USE_LTTNG_VM_TRACEPOINTS
+ if (LTTNG_ENABLED(driver_process_exit)) {
+ lttng_decl_portbuf(port_str);
+ lttng_decl_procbuf(proc_str);
+ lttng_pid_to_str(ERTS_PORT_GET_CONNECTED(prt), proc_str);
+ lttng_port_to_str(prt, port_str);
+ LTTNG3(driver_process_exit, proc_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);
@@ -7579,6 +7877,8 @@ init_driver(erts_driver_t *drv, ErlDrvEntry *de, DE_Handle *handle)
int fpe_was_unmasked = erts_block_fpe();
DTRACE4(driver_init, drv->name, drv->version.major, drv->version.minor,
drv->flags);
+ LTTNG4(driver_init, drv->name, drv->version.major, drv->version.minor,
+ drv->flags);
res = (*de->init)();
erts_unblock_fpe(fpe_was_unmasked);
return res;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 14:08:27 +0000