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-rw-r--r--erts/emulator/beam/beam_emu.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 6d3b15cd46..364f90e281 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -934,6 +934,7 @@ extern int count_instructions;
# define NOINLINE
#endif
+
/*
* The following functions are called directly by process_main().
* Don't inline them.
@@ -952,6 +953,7 @@ static BeamInstr* apply_fun(Process* p, Eterm fun,
Eterm args, Eterm* reg) NOINLINE;
static Eterm new_fun(Process* p, Eterm* reg,
ErlFunEntry* fe, int num_free) NOINLINE;
+static Uint64 timestamp_millis(void);
/*
@@ -1184,6 +1186,9 @@ void process_main(void)
Eterm pt_arity; /* Used by do_put_tuple */
+ Uint64 start_time = 0; /* Monitor long schedule */
+ BeamInstr* start_time_i = NULL;
+
ERL_BITS_DECLARE_STATEP; /* Has to be last declaration */
@@ -1206,6 +1211,16 @@ void process_main(void)
do_schedule:
reds_used = REDS_IN(c_p) - FCALLS;
do_schedule1:
+
+ if (start_time != 0) {
+ Sint64 diff = timestamp_millis() - start_time;
+ if (diff > 0 && (Uint) diff > erts_system_monitor_long_schedule) {
+ BeamInstr *inptr = find_function_from_pc(start_time_i);
+ BeamInstr *outptr = find_function_from_pc(c_p->i);
+ monitor_long_schedule(c_p,inptr,outptr,(Uint) diff);
+ }
+ }
+
PROCESS_MAIN_CHK_LOCKS(c_p);
ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
#if HALFWORD_HEAP
@@ -1214,11 +1229,18 @@ void process_main(void)
ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
c_p = schedule(c_p, reds_used);
ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
+ start_time = 0;
#ifdef DEBUG
pid = c_p->id; /* Save for debugging purpouses */
#endif
ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
PROCESS_MAIN_CHK_LOCKS(c_p);
+
+ if (erts_system_monitor_long_schedule != 0) {
+ start_time = timestamp_millis();
+ start_time_i = c_p->i;
+ }
+
reg = ERTS_PROC_GET_SCHDATA(c_p)->x_reg_array;
freg = ERTS_PROC_GET_SCHDATA(c_p)->f_reg_array;
#if !HEAP_ON_C_STACK
@@ -6475,6 +6497,19 @@ apply_fun(Process* p, Eterm fun, Eterm args, Eterm* reg)
return call_fun(p, arity, reg, args);
}
+static Uint64 timestamp_millis(void)
+{
+#ifdef HAVE_GETHRTIME
+ return (Uint64) (sys_gethrtime() / 1000000);
+#else
+ Uint64 res;
+ SysTimeval tv;
+ sys_gettimeofday(&tv);
+ res = (Uint64) tv.tv_sec*1000000;
+ res += (Uint64) tv.tv_usec;
+ return (res / 1000);
+#endif
+}
static Eterm
new_fun(Process* p, Eterm* reg, ErlFunEntry* fe, int num_free)