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-rw-r--r--erts/emulator/sys/unix/sys.c40
1 files changed, 26 insertions, 14 deletions
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)
{