diff options
Diffstat (limited to 'erts/emulator/beam/break.c')
| -rw-r--r-- | erts/emulator/beam/break.c | 494 |
1 files changed, 319 insertions, 175 deletions
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c index 7d4f52ee23..d9ee940662 100644 --- a/erts/emulator/beam/break.c +++ b/erts/emulator/beam/break.c @@ -1,18 +1,19 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2013. All Rights Reserved. + * Copyright Ericsson AB 1996-2017. All Rights Reserved. * - * The contents of this file are subject to the Erlang Public License, - * Version 1.1, (the "License"); you may not use this file except in - * compliance with the License. You should have received a copy of the - * Erlang Public License along with this software. If not, it can be - * retrieved online at http://www.erlang.org/. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - * the License for the specific language governing rights and limitations - * under the License. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * * %CopyrightEnd% */ @@ -36,30 +37,31 @@ #include "atom.h" #include "beam_load.h" #include "erl_instrument.h" -#include "erl_bif_timer.h" +#include "erl_hl_timer.h" #include "erl_thr_progress.h" /* Forward declarations -- should really appear somewhere else */ static void process_killer(void); void do_break(void); void erl_crash_dump_v(char *file, int line, char* fmt, va_list args); -void erl_crash_dump(char* file, int line, char* fmt, ...); #ifdef DEBUG static void bin_check(void); #endif -static void print_garb_info(int to, void *to_arg, Process* p); +static void print_garb_info(fmtfn_t to, void *to_arg, Process* p); #ifdef OPPROF static void dump_frequencies(void); #endif -static void dump_attributes(int to, void *to_arg, byte* ptr, int size); +static void dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size); extern char* erts_system_version[]; +#define WRITE_BUFFER_SIZE (64*1024) + static void -port_info(int to, void *to_arg) +port_info(fmtfn_t to, void *to_arg) { int i, max = erts_ptab_max(&erts_port); for (i = 0; i < max; i++) { @@ -70,7 +72,7 @@ port_info(int to, void *to_arg) } void -process_info(int to, void *to_arg) +process_info(fmtfn_t to, void *to_arg) { int i, max = erts_ptab_max(&erts_proc); for (i = 0; i < max; i++) { @@ -103,21 +105,23 @@ process_killer(void) erts_printf("(k)ill (n)ext (r)eturn:\n"); while(1) { if ((j = sys_get_key(0)) <= 0) - erl_exit(0, ""); + erts_exit(0, ""); switch(j) { case 'k': { ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND; erts_aint32_t state; - erts_smp_proc_inc_refc(rp); - erts_smp_proc_lock(rp, rp_locks); - state = erts_smp_atomic32_read_acqb(&rp->state); + erts_proc_inc_refc(rp); + erts_proc_lock(rp, rp_locks); + state = erts_atomic32_read_acqb(&rp->state); if (state & (ERTS_PSFLG_FREE | ERTS_PSFLG_EXITING | ERTS_PSFLG_ACTIVE | ERTS_PSFLG_ACTIVE_SYS | ERTS_PSFLG_IN_RUNQ | ERTS_PSFLG_RUNNING - | ERTS_PSFLG_RUNNING_SYS)) { + | ERTS_PSFLG_RUNNING_SYS + | ERTS_PSFLG_DIRTY_RUNNING + | ERTS_PSFLG_DIRTY_RUNNING_SYS)) { erts_printf("Can only kill WAITING processes this way\n"); } else { @@ -130,8 +134,8 @@ process_killer(void) NULL, 0); } - erts_smp_proc_unlock(rp, rp_locks); - erts_smp_proc_dec_refc(rp); + erts_proc_unlock(rp, rp_locks); + erts_proc_dec_refc(rp); } case 'n': br = 1; break; case 'r': return; @@ -145,14 +149,14 @@ process_killer(void) typedef struct { int is_first; - int to; + fmtfn_t to; void *to_arg; } PrintMonitorContext; static void doit_print_link(ErtsLink *lnk, void *vpcontext) { PrintMonitorContext *pcontext = vpcontext; - int to = pcontext->to; + fmtfn_t to = pcontext->to; void *to_arg = pcontext->to_arg; if (pcontext->is_first) { @@ -167,7 +171,7 @@ static void doit_print_link(ErtsLink *lnk, void *vpcontext) static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext) { PrintMonitorContext *pcontext = vpcontext; - int to = pcontext->to; + fmtfn_t to = pcontext->to; void *to_arg = pcontext->to_arg; char *prefix = ", "; @@ -176,26 +180,34 @@ static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext) prefix = ""; } - if (mon->type == MON_ORIGIN) { - if (is_atom(mon->pid)) { /* dist by name */ - ASSERT(is_node_name_atom(mon->pid)); + switch (mon->type) { + case MON_ORIGIN: + if (is_atom(mon->u.pid)) { /* dist by name */ + ASSERT(is_node_name_atom(mon->u.pid)); erts_print(to, to_arg, "%s{to,{%T,%T},%T}", prefix, mon->name, - mon->pid, mon->ref); - erts_print(to, to_arg,"}"); + mon->u.pid, mon->ref); } else if (is_atom(mon->name)){ /* local by name */ erts_print(to, to_arg, "%s{to,{%T,%T},%T}", prefix, mon->name, erts_this_dist_entry->sysname, mon->ref); } else { /* local and distributed by pid */ - erts_print(to, to_arg, "%s{to,%T,%T}", prefix, mon->pid, mon->ref); + erts_print(to, to_arg, "%s{to,%T,%T}", prefix, mon->u.pid, mon->ref); } - } else { /* MON_TARGET */ - erts_print(to, to_arg, "%s{from,%T,%T}", prefix, mon->pid, mon->ref); + break; + case MON_TARGET: + erts_print(to, to_arg, "%s{from,%T,%T}", prefix, mon->u.pid, mon->ref); + break; + case MON_NIF_TARGET: { + ErtsResource* rsrc = mon->u.resource; + erts_print(to, to_arg, "%s{from,{%T,%T},%T}", prefix, rsrc->type->module, + rsrc->type->name, mon->ref); + break; + } } } /* Display info about an individual Erlang process */ void -print_process_info(int to, void *to_arg, Process *p) +print_process_info(fmtfn_t to, void *to_arg, Process *p) { time_t approx_started; int garbing = 0; @@ -209,26 +221,14 @@ print_process_info(int to, void *to_arg, Process *p) /* Display the state */ erts_print(to, to_arg, "State: "); - state = erts_smp_atomic32_read_acqb(&p->state); - if (state & ERTS_PSFLG_FREE) - erts_print(to, to_arg, "Non Existing\n"); /* Should never happen */ - else if (state & ERTS_PSFLG_EXITING) - erts_print(to, to_arg, "Exiting\n"); - else if (state & ERTS_PSFLG_GC) { - garbing = 1; - running = 1; - erts_print(to, to_arg, "Garbing\n"); - } - else if (state & ERTS_PSFLG_SUSPENDED) - erts_print(to, to_arg, "Suspended\n"); - else if (state & ERTS_PSFLG_RUNNING) { - running = 1; - erts_print(to, to_arg, "Running\n"); - } - else if (state & ERTS_PSFLG_ACTIVE) - erts_print(to, to_arg, "Scheduled\n"); - else - erts_print(to, to_arg, "Waiting\n"); + state = erts_atomic32_read_acqb(&p->state); + erts_dump_process_state(to, to_arg, state); + if (state & ERTS_PSFLG_GC) { + garbing = 1; + running = 1; + } else if (state & (ERTS_PSFLG_RUNNING + | ERTS_PSFLG_DIRTY_RUNNING)) + running = 1; /* * If the process is registered as a global process, display the @@ -241,9 +241,9 @@ print_process_info(int to, void *to_arg, Process *p) * Display the initial function name */ erts_print(to, to_arg, "Spawned as: %T:%T/%bpu\n", - p->initial[INITIAL_MOD], - p->initial[INITIAL_FUN], - p->initial[INITIAL_ARI]); + p->u.initial.module, + p->u.initial.function, + p->u.initial.arity); if (p->current != NULL) { if (running) { @@ -252,20 +252,20 @@ print_process_info(int to, void *to_arg, Process *p) erts_print(to, to_arg, "Current call: "); } erts_print(to, to_arg, "%T:%T/%bpu\n", - p->current[0], - p->current[1], - p->current[2]); + p->current->module, + p->current->function, + p->current->arity); } erts_print(to, to_arg, "Spawned by: %T\n", p->parent); approx_started = (time_t) p->approx_started; erts_print(to, to_arg, "Started: %s", ctime(&approx_started)); - ERTS_SMP_MSGQ_MV_INQ2PRIVQ(p); + ERTS_MSGQ_MV_INQ2PRIVQ(p); erts_print(to, to_arg, "Message queue length: %d\n", p->msg.len); /* display the message queue only if there is anything in it */ if (!ERTS_IS_CRASH_DUMPING && p->msg.first != NULL && !garbing) { - ErlMessage* mp; + ErtsMessage* mp; erts_print(to, to_arg, "Message queue: ["); for (mp = p->msg.first; mp; mp = mp->next) erts_print(to, to_arg, mp->next ? "%T," : "%T", ERL_MESSAGE_TERM(mp)); @@ -301,16 +301,16 @@ print_process_info(int to, void *to_arg, Process *p) erts_print(to, to_arg, "timeout"); else erts_print(to, to_arg, "%T:%T/%bpu\n", - scb->ct[j]->code[0], - scb->ct[j]->code[1], - scb->ct[j]->code[2]); + scb->ct[j]->info.mfa.module, + scb->ct[j]->info.mfa.function, + scb->ct[j]->info.mfa.arity); } erts_print(to, to_arg, "\n"); } /* display the links only if there are any*/ if (ERTS_P_LINKS(p) || ERTS_P_MONITORS(p)) { - PrintMonitorContext context = {1,to}; + PrintMonitorContext context = {1, to, to_arg}; erts_print(to, to_arg,"Link list: ["); erts_doforall_links(ERTS_P_LINKS(p), &doit_print_link, &context); erts_doforall_monitors(ERTS_P_MONITORS(p), &doit_print_monitor, &context); @@ -336,7 +336,7 @@ print_process_info(int to, void *to_arg, Process *p) erts_print(to, to_arg, "Heap unused: %bpu\n", (p->hend - p->htop)); erts_print(to, to_arg, "OldHeap unused: %bpu\n", (OLD_HEAP(p) == NULL) ? 0 : (OLD_HEND(p) - OLD_HTOP(p)) ); - erts_print(to, to_arg, "Memory: %beu\n", erts_process_memory(p)); + erts_print(to, to_arg, "Memory: %beu\n", erts_process_memory(p, !0)); if (garbing) { print_garb_info(to, to_arg, p); @@ -346,18 +346,21 @@ print_process_info(int to, void *to_arg, Process *p) erts_program_counter_info(to, to_arg, p); } else { erts_print(to, to_arg, "Stack dump:\n"); -#ifdef ERTS_SMP if (!garbing) -#endif erts_stack_dump(to, to_arg, p); } + + /* Display all states */ + erts_print(to, to_arg, "Internal State: "); + erts_dump_extended_process_state(to, to_arg, state); } static void -print_garb_info(int to, void *to_arg, Process* p) +print_garb_info(fmtfn_t to, void *to_arg, Process* p) { /* ERTS_SMP: A scheduler is probably concurrently doing gc... */ -#ifndef ERTS_SMP + if (!ERTS_IS_CRASH_DUMPING) + return; erts_print(to, to_arg, "New heap start: %bpX\n", p->heap); erts_print(to, to_arg, "New heap top: %bpX\n", p->htop); erts_print(to, to_arg, "Stack top: %bpX\n", p->stop); @@ -365,11 +368,10 @@ print_garb_info(int to, void *to_arg, Process* p) erts_print(to, to_arg, "Old heap start: %bpX\n", OLD_HEAP(p)); erts_print(to, to_arg, "Old heap top: %bpX\n", OLD_HTOP(p)); erts_print(to, to_arg, "Old heap end: %bpX\n", OLD_HEND(p)); -#endif } void -info(int to, void *to_arg) +info(fmtfn_t to, void *to_arg) { erts_memory(&to, to_arg, NULL, THE_NON_VALUE); atom_info(to, to_arg); @@ -384,13 +386,25 @@ info(int to, void *to_arg) } +static int code_size(struct erl_module_instance* modi) +{ + int size = modi->code_length; + + if (modi->code_hdr) { + ErtsLiteralArea* lit = modi->code_hdr->literal_area; + if (lit) + size += (lit->end - lit->start) * sizeof(Eterm); + } + return size; +} + void -loaded(int to, void *to_arg) +loaded(fmtfn_t to, void *to_arg) { int i; int old = 0; int cur = 0; - BeamInstr* code; + BeamCodeHeader* code; Module* modp; ErtsCodeIndex code_ix; @@ -401,13 +415,9 @@ loaded(int to, void *to_arg) * Calculate and print totals. */ for (i = 0; i < module_code_size(code_ix); i++) { - if ((modp = module_code(i, code_ix)) != NULL && - ((modp->curr.code_length != 0) || - (modp->old.code_length != 0))) { - cur += modp->curr.code_length; - if (modp->old.code_length != 0) { - old += modp->old.code_length; - } + if ((modp = module_code(i, code_ix)) != NULL) { + cur += code_size(&modp->curr); + old += code_size(&modp->old); } } erts_print(to, to_arg, "Current code: %d\n", cur); @@ -423,55 +433,49 @@ loaded(int to, void *to_arg) /* * Interactive dump; keep it brief. */ - if (modp != NULL && - ((modp->curr.code_length != 0) || - (modp->old.code_length != 0))) { - erts_print(to, to_arg, "%T", make_atom(modp->module)); - cur += modp->curr.code_length; - erts_print(to, to_arg, " %d", modp->curr.code_length ); - if (modp->old.code_length != 0) { - erts_print(to, to_arg, " (%d old)", - modp->old.code_length ); - old += modp->old.code_length; - } + if (modp != NULL && ((modp->curr.code_length != 0) || + (modp->old.code_length != 0))) { + erts_print(to, to_arg, "%T %d", make_atom(modp->module), + code_size(&modp->curr)); + if (modp->old.code_length != 0) + erts_print(to, to_arg, " (%d old)", code_size(&modp->old)); erts_print(to, to_arg, "\n"); } } else { /* * To crash dump; make it parseable. */ - if (modp != NULL && - ((modp->curr.code_length != 0) || - (modp->old.code_length != 0))) { + if (modp != NULL && ((modp->curr.code_length != 0) || + (modp->old.code_length != 0))) { erts_print(to, to_arg, "=mod:"); erts_print(to, to_arg, "%T", make_atom(modp->module)); erts_print(to, to_arg, "\n"); erts_print(to, to_arg, "Current size: %d\n", - modp->curr.code_length); - code = modp->curr.code; - if (code != NULL && code[MI_ATTR_PTR]) { + code_size(&modp->curr)); + code = modp->curr.code_hdr; + if (code != NULL && code->attr_ptr) { erts_print(to, to_arg, "Current attributes: "); - dump_attributes(to, to_arg, (byte *) code[MI_ATTR_PTR], - code[MI_ATTR_SIZE]); + dump_attributes(to, to_arg, code->attr_ptr, + code->attr_size); } - if (code != NULL && code[MI_COMPILE_PTR]) { + if (code != NULL && code->compile_ptr) { erts_print(to, to_arg, "Current compilation info: "); - dump_attributes(to, to_arg, (byte *) code[MI_COMPILE_PTR], - code[MI_COMPILE_SIZE]); + dump_attributes(to, to_arg, code->compile_ptr, + code->compile_size); } if (modp->old.code_length != 0) { - erts_print(to, to_arg, "Old size: %d\n", modp->old.code_length); - code = modp->old.code; - if (code[MI_ATTR_PTR]) { + erts_print(to, to_arg, "Old size: %d\n", code_size(&modp->old)); + code = modp->old.code_hdr; + if (code->attr_ptr) { erts_print(to, to_arg, "Old attributes: "); - dump_attributes(to, to_arg, (byte *) code[MI_ATTR_PTR], - code[MI_ATTR_SIZE]); + dump_attributes(to, to_arg, code->attr_ptr, + code->attr_size); } - if (code[MI_COMPILE_PTR]) { + if (code->compile_ptr) { erts_print(to, to_arg, "Old compilation info: "); - dump_attributes(to, to_arg, (byte *) code[MI_COMPILE_PTR], - code[MI_COMPILE_SIZE]); + dump_attributes(to, to_arg, code->compile_ptr, + code->compile_size); } } } @@ -482,7 +486,7 @@ loaded(int to, void *to_arg) static void -dump_attributes(int to, void *to_arg, byte* ptr, int size) +dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size) { while (size-- > 0) { erts_print(to, to_arg, "%02X", *ptr++); @@ -502,17 +506,19 @@ do_break(void) halt immediately if break is called */ mode = erts_read_env("ERL_CONSOLE_MODE"); if (mode && strcmp(mode, "window") != 0) - erl_exit(0, ""); + erts_exit(0, ""); erts_free_read_env(mode); #endif /* __WIN32__ */ + ASSERT(erts_thr_progress_is_blocking()); + erts_printf("\n" "BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded\n" " (v)ersion (k)ill (D)b-tables (d)istribution\n"); while (1) { if ((i = sys_get_key(0)) <= 0) - erl_exit(0, ""); + erts_exit(0, ""); switch (i) { case 'q': case 'a': @@ -522,9 +528,9 @@ do_break(void) * The usual reason for a read error is Ctrl-C. Treat this as * 'a' to avoid infinite loop. */ - erl_exit(0, ""); + erts_exit(0, ""); case 'A': /* Halt generating crash dump */ - erl_exit(1, "Crash dump requested by user"); + erts_exit(ERTS_ERROR_EXIT, "Crash dump requested by user"); case 'c': return; case 'p': @@ -545,7 +551,9 @@ do_break(void) erts_printf("Erlang (%s) emulator version " ERLANG_VERSION "\n", EMULATOR); +#if ERTS_SAVED_COMPILE_TIME erts_printf("Compiled on " ERLANG_COMPILE_DATE "\n"); +#endif return; case 'd': distribution_info(ERTS_PRINT_STDOUT, NULL); @@ -580,7 +588,7 @@ do_break(void) #endif #ifdef DEBUG case 't': - erts_p_slpq(); + /* erts_p_slpq(); */ return; case 'b': bin_check(); @@ -650,7 +658,7 @@ bin_check(void) erts_printf("%p orig_size: %bpd, norefs = %bpd\n", bp->val, bp->val->orig_size, - erts_smp_atomic_read_nob(&bp->val->refc)); + erts_refc_read(&bp->val->intern.refc, 1)); } } if (printed) { @@ -664,13 +672,41 @@ bin_check(void) #endif +static Sint64 crash_dump_limit = ERTS_SINT64_MAX; +static Sint64 crash_dump_written = 0; + +typedef struct LimitedWriterInfo_ { + fmtfn_t to; + void* to_arg; +} LimitedWriterInfo; + +static int +crash_dump_limited_writer(void* vfdp, char* buf, size_t len) +{ + const char stop_msg[] = "\n=abort:CRASH DUMP SIZE LIMIT REACHED\n"; + LimitedWriterInfo* lwi = (LimitedWriterInfo *) vfdp; + + crash_dump_written += len; + if (crash_dump_written <= crash_dump_limit) { + return lwi->to(lwi->to_arg, buf, len); + } + + len -= (crash_dump_written - crash_dump_limit); + lwi->to(lwi->to_arg, buf, len); + lwi->to(lwi->to_arg, (char*)stop_msg, sizeof(stop_msg)-1); + if (lwi->to == &erts_write_fp) { + fclose((FILE *) lwi->to_arg); + } + + /* We assume that crash dump was called from erts_exit_vv() */ + erts_exit_epilogue(); +} + /* XXX THIS SHOULD BE IN SYSTEM !!!! */ void erl_crash_dump_v(char *file, int line, char* fmt, va_list args) { -#ifdef ERTS_SMP ErtsThrPrgrData tpd_buf; /* in case we aren't a managed thread... */ -#endif int fd; size_t envsz; time_t now; @@ -680,28 +716,43 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) char* dumpname; int secs; int env_erl_crash_dump_seconds_set = 1; + int i; + fmtfn_t to = &erts_write_fd; + void* to_arg; + FILE* fp = 0; + LimitedWriterInfo lwi; + static char* write_buffer; /* 'static' to avoid a leak warning in valgrind */ if (ERTS_SOMEONE_IS_CRASH_DUMPING) return; -#ifdef ERTS_SMP + /* Order all managed threads to block, this has to be done + first to guarantee that this is the only thread to generate + crash dump. */ + erts_thr_progress_fatal_error_block(&tpd_buf); + +#ifdef ERTS_SYS_SUSPEND_SIGNAL /* - * Wait for all managed threads to block. If all threads haven't blocked - * after a minute, we go anyway and hope for the best... - * - * We do not release system again. We expect an exit() or abort() after - * dump has been written. + * We suspend all scheduler threads so that we can dump some + * data about the currently running processes and scheduler data. + * We have to be very very careful when doing this as the schedulers + * could be anywhere. */ - erts_thr_progress_fatal_error_block(60000, &tpd_buf); - /* Either worked or not... */ + sys_init_suspend_handler(); + + for (i = 0; i < erts_no_schedulers; i++) { + erts_tid_t tid = ERTS_SCHEDULER_IX(i)->tid; + if (!erts_equal_tids(tid,erts_thr_self())) + sys_thr_suspend(tid); + } - /* Allow us to pass certain places without locking... */ - erts_smp_atomic32_set_mb(&erts_writing_erl_crash_dump, 1); - erts_smp_tsd_set(erts_is_crash_dumping_key, (void *) 1); -#else - erts_writing_erl_crash_dump = 1; #endif + /* Allow us to pass certain places without locking... */ + erts_atomic32_set_mb(&erts_writing_erl_crash_dump, 1); + erts_tsd_set(erts_is_crash_dumping_key, (void *) 1); + + envsz = sizeof(env); /* ERL_CRASH_DUMP_SECONDS not set * if we have a heart port, break immediately @@ -749,69 +800,162 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args) return; } + crash_dump_limit = ERTS_SINT64_MAX; + envsz = sizeof(env); + if (erts_sys_getenv__("ERL_CRASH_DUMP_BYTES", env, &envsz) == 0) { + Sint64 limit; + char* endptr; + errno = 0; + limit = ErtsStrToSint64(env, &endptr, 10); + if (errno == 0 && limit >= 0 && endptr != env && *endptr == 0) { + if (limit == 0) + return; + crash_dump_limit = limit; + to = &crash_dump_limited_writer; + } + } + if (erts_sys_getenv__("ERL_CRASH_DUMP",&dumpnamebuf[0],&dumpnamebufsize) != 0) dumpname = "erl_crash.dump"; else dumpname = &dumpnamebuf[0]; + + erts_fprintf(stderr,"\nCrash dump is being written to: %s...", dumpname); fd = open(dumpname,O_WRONLY | O_CREAT | O_TRUNC,0640); - if (fd < 0) + if (fd < 0) return; /* Can't create the crash dump, skip it */ - + + /* + * Wrap into a FILE* so that we can use buffered output. Set an + * explicit buffer to make sure the first write does not fail because + * of a failure to allocate a buffer. + */ + write_buffer = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, WRITE_BUFFER_SIZE); + if (write_buffer && (fp = fdopen(fd, "w")) != NULL) { + setvbuf(fp, write_buffer, _IOFBF, WRITE_BUFFER_SIZE); + lwi.to = &erts_write_fp; + lwi.to_arg = (void*)fp; + } else { + lwi.to = &erts_write_fd; + lwi.to_arg = (void*)&fd; + } + if (to == &crash_dump_limited_writer) { + to_arg = (void *) &lwi; + } else { + to = lwi.to; + to_arg = lwi.to_arg; + } + time(&now); - erts_fdprintf(fd, "=erl_crash_dump:0.3\n%s", ctime(&now)); + erts_cbprintf(to, to_arg, "=erl_crash_dump:0.4\n%s", ctime(&now)); if (file != NULL) - erts_fdprintf(fd, "The error occurred in file %s, line %d\n", file, line); + erts_cbprintf(to, to_arg, "The error occurred in file %s, line %d\n", file, line); if (fmt != NULL && *fmt != '\0') { - erts_fdprintf(fd, "Slogan: "); - erts_vfdprintf(fd, fmt, args); - } - erts_fdprintf(fd, "System version: "); - erts_print_system_version(fd, NULL, NULL); - erts_fdprintf(fd, "%s\n", "Compiled: " ERLANG_COMPILE_DATE); - erts_fdprintf(fd, "Taints: "); - erts_print_nif_taints(fd, NULL); - erts_fdprintf(fd, "Atoms: %d\n", atom_table_size()); - info(fd, NULL); /* General system info */ + erts_cbprintf(to, to_arg, "Slogan: "); + erts_vcbprintf(to, to_arg, fmt, args); + } + erts_cbprintf(to, to_arg, "System version: "); + erts_print_system_version(to, to_arg, NULL); +#if ERTS_SAVED_COMPILE_TIME + erts_cbprintf(to, to_arg, "%s\n", "Compiled: " ERLANG_COMPILE_DATE); +#endif + + erts_cbprintf(to, to_arg, "Taints: "); + erts_print_nif_taints(to, to_arg); + erts_cbprintf(to, to_arg, "Atoms: %d\n", atom_table_size()); + + /* We want to note which thread it was that called erts_exit */ + if (erts_get_scheduler_data()) { + erts_cbprintf(to, to_arg, "Calling Thread: scheduler:%d\n", + erts_get_scheduler_data()->no); + } else { + if (!erts_thr_getname(erts_thr_self(), dumpnamebuf, MAXPATHLEN)) + erts_cbprintf(to, to_arg, "Calling Thread: %s\n", dumpnamebuf); + else + erts_cbprintf(to, to_arg, "Calling Thread: %p\n", erts_thr_self()); + } + +#if defined(ERTS_HAVE_TRY_CATCH) + + /* + * erts_print_scheduler_info is not guaranteed to be safe to call + * here for all schedulers as we may have suspended a scheduler + * in the middle of updating the STACK_TOP and STACK_START + * variables and thus when scanning the stack we could get + * segmentation faults. We protect against this very unlikely + * scenario by using the ERTS_SYS_TRY_CATCH. + */ + for (i = 0; i < erts_no_schedulers; i++) { + ERTS_SYS_TRY_CATCH( + erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i)), + erts_cbprintf(to, to_arg, "** crashed **\n")); + } +#endif + + +#ifdef ERTS_SYS_SUSPEND_SIGNAL + + /* We resume all schedulers so that we are in a known safe state + when we write the rest of the crash dump */ + for (i = 0; i < erts_no_schedulers; i++) { + erts_tid_t tid = ERTS_SCHEDULER_IX(i)->tid; + if (!erts_equal_tids(tid,erts_thr_self())) + sys_thr_resume(tid); + } +#endif + + /* + * Wait for all managed threads to block. If all threads haven't blocked + * after a minute, we go anyway and hope for the best... + * + * We do not release system again. We expect an exit() or abort() after + * dump has been written. + */ + erts_thr_progress_fatal_error_wait(60000); + /* Either worked or not... */ + +#ifndef ERTS_HAVE_TRY_CATCH + /* This is safe to call here, as all schedulers are blocked */ + for (i = 0; i < erts_no_schedulers; i++) { + erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i)); + } +#endif + + info(to, to_arg); /* General system info */ if (erts_ptab_initialized(&erts_proc)) - process_info(fd, NULL); /* Info about each process and port */ - db_info(fd, NULL, 0); - erts_print_bif_timer_info(fd, NULL); - distribution_info(fd, NULL); - erts_fdprintf(fd, "=loaded_modules\n"); - loaded(fd, NULL); - erts_dump_fun_entries(fd, NULL); - erts_deep_process_dump(fd, NULL); - erts_fdprintf(fd, "=atoms\n"); - dump_atoms(fd, NULL); + process_info(to, to_arg); /* Info about each process and port */ + db_info(to, to_arg, 0); + erts_print_bif_timer_info(to, to_arg); + distribution_info(to, to_arg); + erts_cbprintf(to, to_arg, "=loaded_modules\n"); + loaded(to, to_arg); + erts_dump_fun_entries(to, to_arg); + erts_deep_process_dump(to, to_arg); + erts_cbprintf(to, to_arg, "=atoms\n"); + dump_atoms(to, to_arg); /* Keep the instrumentation data at the end of the dump */ if (erts_instr_memory_map || erts_instr_stat) { - erts_fdprintf(fd, "=instr_data\n"); + erts_cbprintf(to, to_arg, "=instr_data\n"); if (erts_instr_stat) { - erts_fdprintf(fd, "=memory_status\n"); - erts_instr_dump_stat_to_fd(fd, 0); + erts_cbprintf(to, to_arg, "=memory_status\n"); + erts_instr_dump_stat_to(to, to_arg, 0); } if (erts_instr_memory_map) { - erts_fdprintf(fd, "=memory_map\n"); - erts_instr_dump_memory_map_to_fd(fd); + erts_cbprintf(to, to_arg, "=memory_map\n"); + erts_instr_dump_memory_map_to(to, to_arg); } } - erts_fdprintf(fd, "=end\n"); + erts_cbprintf(to, to_arg, "=end\n"); + if (fp) { + fclose(fp); + } close(fd); - erts_fprintf(stderr,"\nCrash dump was written to: %s\n", dumpname); + erts_fprintf(stderr,"done\n"); } -void -erl_crash_dump(char* file, int line, char* fmt, ...) -{ - va_list args; - - va_start(args, fmt); - erl_crash_dump_v(file, line, fmt, args); - va_end(args); -} |