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-rw-r--r--erts/emulator/beam/break.c196
1 files changed, 114 insertions, 82 deletions
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 3c19e82b66..74a8a3b852 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2017. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -44,23 +44,22 @@
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[];
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++) {
@@ -71,7 +70,7 @@ 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++) {
@@ -148,14 +147,14 @@ 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) {
@@ -170,7 +169,7 @@ 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 = ", ";
@@ -197,7 +196,7 @@ static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext)
/* 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;
@@ -300,7 +299,7 @@ print_process_info(int to, void *to_arg, Process *p)
/* 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);
@@ -348,7 +347,7 @@ print_process_info(int to, void *to_arg, Process *p)
}
static void
-print_garb_info(int to, void *to_arg, Process* p)
+print_garb_info(fmtfn_t to, void *to_arg, Process* p)
{
#ifdef ERTS_SMP
/* ERTS_SMP: A scheduler is probably concurrently doing gc... */
@@ -365,7 +364,7 @@ print_garb_info(int to, void *to_arg, Process* p)
}
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);
@@ -380,8 +379,20 @@ 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;
@@ -397,13 +408,9 @@ 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);
@@ -419,31 +426,25 @@ 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_size(&modp->curr));
code = modp->curr.code_hdr;
if (code != NULL && code->attr_ptr) {
erts_print(to, to_arg, "Current attributes: ");
@@ -457,7 +458,7 @@ loaded(int to, void *to_arg)
}
if (modp->old.code_length != 0) {
- erts_print(to, to_arg, "Old size: %d\n", modp->old.code_length);
+ 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: ");
@@ -478,7 +479,7 @@ 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++);
@@ -648,7 +649,7 @@ 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->refc, 1));
}
}
if (printed) {
@@ -662,6 +663,26 @@ bin_check(void)
#endif
+static Sint64 crash_dump_limit = ERTS_SINT64_MAX;
+static Sint64 crash_dump_written = 0;
+
+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";
+
+ crash_dump_written += len;
+ if (crash_dump_written <= crash_dump_limit) {
+ return erts_write_fd(vfdp, buf, len);
+ }
+
+ len -= (crash_dump_written - crash_dump_limit);
+ erts_write_fd(vfdp, buf, len);
+ erts_write_fd(vfdp, (char*)stop_msg, sizeof(stop_msg)-1);
+
+ /* 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)
@@ -679,6 +700,8 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
int secs;
int env_erl_crash_dump_seconds_set = 1;
int i;
+ fmtfn_t to = &erts_write_fd;
+ void* to_arg;
if (ERTS_SOMEONE_IS_CRASH_DUMPING)
return;
@@ -696,6 +719,8 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
* We have to be very very careful when doing this as the schedulers
* could be anywhere.
*/
+ 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()))
@@ -759,6 +784,21 @@ 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
@@ -769,39 +809,40 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
fd = open(dumpname,O_WRONLY | O_CREAT | O_TRUNC,0640);
if (fd < 0)
return; /* Can't create the crash dump, skip it */
+ to_arg = (void*)&fd;
time(&now);
- erts_fdprintf(fd, "=erl_crash_dump:0.3\n%s", ctime(&now));
+ erts_cbprintf(to, to_arg, "=erl_crash_dump:0.3\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_cbprintf(to, to_arg, "Slogan: ");
+ erts_vcbprintf(to, to_arg, fmt, args);
}
- erts_fdprintf(fd, "System version: ");
- erts_print_system_version(fd, NULL, NULL);
+ erts_cbprintf(to, to_arg, "System version: ");
+ erts_print_system_version(to, to_arg, NULL);
#if ERTS_SAVED_COMPILE_TIME
- erts_fdprintf(fd, "%s\n", "Compiled: " ERLANG_COMPILE_DATE);
+ erts_cbprintf(to, to_arg, "%s\n", "Compiled: " ERLANG_COMPILE_DATE);
#endif
- erts_fdprintf(fd, "Taints: ");
- erts_print_nif_taints(fd, NULL);
- erts_fdprintf(fd, "Atoms: %d\n", atom_table_size());
+ erts_cbprintf(to, to_arg, "Taints: ");
+ erts_print_nif_taints(to, to_arg);
+ erts_cbprintf(to, to_arg, "Atoms: %d\n", atom_table_size());
#ifdef USE_THREADS
/* We want to note which thread it was that called erts_exit */
if (erts_get_scheduler_data()) {
- erts_fdprintf(fd, "Calling Thread: scheduler:%d\n",
+ 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_fdprintf(fd, "Calling Thread: %s\n", dumpnamebuf);
+ erts_cbprintf(to, to_arg, "Calling Thread: %s\n", dumpnamebuf);
else
- erts_fdprintf(fd, "Calling Thread: %p\n", erts_thr_self());
+ erts_cbprintf(to, to_arg, "Calling Thread: %p\n", erts_thr_self());
}
#else
- erts_fdprintf(fd, "Calling Thread: scheduler:1\n");
+ erts_cbprintf(to, to_arg, "Calling Thread: scheduler:1\n");
#endif
#if defined(ERTS_HAVE_TRY_CATCH)
@@ -816,8 +857,8 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
*/
for (i = 0; i < erts_no_schedulers; i++) {
ERTS_SYS_TRY_CATCH(
- erts_print_scheduler_info(fd, NULL, ERTS_SCHEDULER_IX(i)),
- erts_fdprintf(fd, "** crashed **\n"));
+ erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i)),
+ erts_cbprintf(to, to_arg, "** crashed **\n"));
}
#endif
@@ -848,48 +889,39 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
#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(fd, NULL, ERTS_SCHEDULER_IX(i));
+ erts_print_scheduler_info(to, to_arg, ERTS_SCHEDULER_IX(i));
}
#endif
- info(fd, NULL); /* General system info */
+ 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");
close(fd);
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);
-}
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