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-rw-r--r--erts/emulator/beam/break.c39
-rw-r--r--erts/emulator/beam/index.c3
-rw-r--r--erts/emulator/beam/sys.h2
-rw-r--r--erts/emulator/sys/unix/sys.c40
-rwxr-xr-xerts/emulator/sys/win32/sys.c3
5 files changed, 68 insertions, 19 deletions
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 93aa2fb8d0..cf66f4e6b6 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -650,10 +650,13 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
ErtsThrPrgrData tpd_buf; /* in case we aren't a managed thread... */
#endif
int fd;
+ size_t envsz;
time_t now;
+ char env[21]; /* enough to hold any 64-bit integer */
size_t dumpnamebufsize = MAXPATHLEN;
char dumpnamebuf[MAXPATHLEN];
char* dumpname;
+ int secs;
if (ERTS_SOMEONE_IS_CRASH_DUMPING)
return;
@@ -676,9 +679,41 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
erts_writing_erl_crash_dump = 1;
#endif
- erts_sys_prepare_crash_dump();
+ envsz = sizeof(env);
+ /* ERL_CRASH_DUMP_SECONDS not set
+ * same as ERL_CRASH_DUMP_SECONDS = 0
+ * - do not write dump
+ * - do not set an alarm
+ * - break immediately
+ *
+ * ERL_CRASH_DUMP_SECONDS = 0
+ * - do not write dump
+ * - do not set an alarm
+ * - break immediately
+ *
+ * ERL_CRASH_DUMP_SECONDS < 0
+ * - do not set alarm
+ * - write dump until done
+ *
+ * ERL_CRASH_DUMP_SECONDS = S (and S positive)
+ * - Don't dump file forever
+ * - set alarm (set in sys)
+ * - write dump until alarm or file is written completely
+ */
+
+ if (erts_sys_getenv__("ERL_CRASH_DUMP_SECONDS", env, &envsz) != 0) {
+ return; /* break immediately */
+ } else {
+ secs = atoi(env);
+ }
+
+ if (secs == 0) {
+ return;
+ }
+
+ erts_sys_prepare_crash_dump(secs);
- if (erts_sys_getenv_raw("ERL_CRASH_DUMP",&dumpnamebuf[0],&dumpnamebufsize) != 0)
+ if (erts_sys_getenv__("ERL_CRASH_DUMP",&dumpnamebuf[0],&dumpnamebufsize) != 0)
dumpname = "erl_crash.dump";
else
dumpname = &dumpnamebuf[0];
diff --git a/erts/emulator/beam/index.c b/erts/emulator/beam/index.c
index a4a3007f93..ad4672c3de 100644
--- a/erts/emulator/beam/index.c
+++ b/erts/emulator/beam/index.c
@@ -82,7 +82,8 @@ index_put(IndexTable* t, void* tmpl)
if (ix >= t->size) {
Uint sz;
if (ix >= t->limit) {
- erl_exit(1, "no more index entries in %s (max=%d)\n",
+ /* A core dump is unnecessary */
+ erl_exit(ERTS_DUMP_EXIT, "no more index entries in %s (max=%d)\n",
t->htable.name, t->limit);
}
sz = INDEX_PAGE_SIZE*sizeof(IndexSlot*);
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 2406c52f14..9dd8341520 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -652,7 +652,7 @@ void erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec);
void erts_sys_main_thread(void);
#endif
-extern void erts_sys_prepare_crash_dump(void);
+extern void erts_sys_prepare_crash_dump(int secs);
extern void erts_sys_pre_init(void);
extern void erl_sys_init(void);
extern void erl_sys_args(int *argc, char **argv);
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index 37dfcb1dd4..282ecb345f 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -687,18 +687,20 @@ static RETSIGTYPE break_handler(int sig)
#endif /* 0 */
static ERTS_INLINE void
-prepare_crash_dump(void)
+prepare_crash_dump(int secs)
{
+#define NUFBUF (3)
int i, max;
char env[21]; /* enough to hold any 64-bit integer */
size_t envsz;
+ DeclareTmpHeapNoproc(heap,NUFBUF);
Port *heart_port;
- Eterm heap[3];
Eterm *hp = heap;
Eterm list = NIL;
-
int heart_fd[2] = {-1,-1};
+ UseTmpHeapNoproc(NUFBUF);
+
if (ERTS_PREPARED_CRASH_DUMP)
return; /* We have already been called */
@@ -740,7 +742,7 @@ prepare_crash_dump(void)
}
envsz = sizeof(env);
- i = erts_sys_getenv_raw("ERL_CRASH_DUMP_NICE", env, &envsz);
+ i = erts_sys_getenv__("ERL_CRASH_DUMP_NICE", env, &envsz);
if (i >= 0) {
int nice_val;
nice_val = i != 0 ? 0 : atoi(env);
@@ -749,20 +751,21 @@ prepare_crash_dump(void)
}
erts_silence_warn_unused_result(nice(nice_val));
}
-
- envsz = sizeof(env);
- i = erts_sys_getenv_raw("ERL_CRASH_DUMP_SECONDS", env, &envsz);
- if (i >= 0) {
- unsigned sec;
- sec = (unsigned) i != 0 ? 0 : atoi(env);
- alarm(sec);
+
+ /* Positive secs means an alarm must be set
+ * 0 or negative means no alarm
+ */
+ if (secs > 0) {
+ alarm((unsigned int)secs);
}
+ UnUseTmpHeapNoproc(NUFBUF);
+#undef NUFBUF
}
void
-erts_sys_prepare_crash_dump(void)
+erts_sys_prepare_crash_dump(int secs)
{
- prepare_crash_dump();
+ prepare_crash_dump(secs);
}
static ERTS_INLINE void
@@ -804,7 +807,7 @@ sigusr1_exit(void)
is hung somewhere, so it won't be able to poll any flag we set here.
*/
ERTS_SET_GOT_SIGUSR1;
- prepare_crash_dump();
+ prepare_crash_dump((int)0);
erl_exit(1, "Received SIGUSR1\n");
}
@@ -2439,6 +2442,15 @@ erts_sys_getenv_raw(char *key, char *value, size_t *size) {
return erts_sys_getenv(key, value, size);
}
+/*
+ * erts_sys_getenv
+ * returns:
+ * -1, if environment key is not set with a value
+ * 0, if environment key is set and value fits into buffer size
+ * 1, if environment key is set but does not fit into buffer size
+ * size is set with the needed buffer size value
+ */
+
int
erts_sys_getenv(char *key, char *value, size_t *size)
{
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index c5664d8e8a..9d45023ceb 100755
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -256,7 +256,7 @@ void erl_sys_args(int* argc, char** argv)
}
void
-erts_sys_prepare_crash_dump(void)
+erts_sys_prepare_crash_dump(int secs)
{
Port *heart_port;
Eterm heap[3];
@@ -274,6 +274,7 @@ erts_sys_prepare_crash_dump(void)
}
/* Windows - free file descriptors are hopefully available */
+ /* Alarm not used on windows */
}
static void
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 13:37:32 +0000