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-rw-r--r--erts/emulator/beam/erl_time.h82
1 files changed, 58 insertions, 24 deletions
diff --git a/erts/emulator/beam/erl_time.h b/erts/emulator/beam/erl_time.h
index a1c4220633..ccc5526664 100644
--- a/erts/emulator/beam/erl_time.h
+++ b/erts/emulator/beam/erl_time.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2006-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2006-2017. 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.
@@ -21,19 +21,52 @@
#ifndef ERL_TIME_H__
#define ERL_TIME_H__
-/* timer wheel size NEED to be a power of 2 */
-#ifdef SMALL_MEMORY
-#define ERTS_TIW_SIZE (1 << 13)
-#else
-#define ERTS_TIW_SIZE (1 << 16)
+#if 0
+# define ERTS_TW_DEBUG
+#endif
+#if defined(DEBUG) && !defined(ERTS_TW_DEBUG)
+# define ERTS_TW_DEBUG
#endif
-#if defined(DEBUG) || 0
+#if defined(ERTS_TW_DEBUG)
#define ERTS_TIME_ASSERT(B) ERTS_ASSERT(B)
#else
#define ERTS_TIME_ASSERT(B) ((void) 1)
#endif
+#ifdef ERTS_TW_DEBUG
+/*
+ * Soon wheel will handle about 1 seconds
+ * Later wheel will handle about 8 minutes
+ */
+# define ERTS_TW_SOON_WHEEL_BITS 10
+# define ERTS_TW_LATER_WHEEL_BITS 10
+#else
+# ifdef SMALL_MEMORY
+/*
+ * Soon wheel will handle about 4 seconds
+ * Later wheel will handle about 2 hours and 19 minutes
+ */
+# define ERTS_TW_SOON_WHEEL_BITS 12
+# define ERTS_TW_LATER_WHEEL_BITS 12
+# else
+/*
+ * Soon wheel will handle about 16 seconds
+ * Later wheel will handle about 37 hours and 16 minutes
+ */
+# define ERTS_TW_SOON_WHEEL_BITS 14
+# define ERTS_TW_LATER_WHEEL_BITS 14
+# endif
+#endif
+
+/*
+ * Number of slots in each timer wheel...
+ *
+ * These *need* to be a power of 2
+ */
+#define ERTS_TW_SOON_WHEEL_SIZE (1 << ERTS_TW_SOON_WHEEL_BITS)
+#define ERTS_TW_LATER_WHEEL_SIZE (1 << ERTS_TW_LATER_WHEEL_BITS)
+
typedef enum {
ERTS_NO_TIME_WARP_MODE,
ERTS_SINGLE_TIME_WARP_MODE,
@@ -103,7 +136,10 @@ Eterm erts_system_time_source(struct process*c_p);
#define ERTS_CLKTCK_RESOLUTION (erts_time_sup__.r.o.clktck_resolution)
#endif
-#define ERTS_TIMER_WHEEL_MSEC (ERTS_TIW_SIZE/(ERTS_CLKTCK_RESOLUTION/1000))
+#define ERTS_TW_SOON_WHEEL_MSEC (ERTS_TW_SOON_WHEEL_SIZE/(ERTS_CLKTCK_RESOLUTION/1000))
+#define ERTS_TW_LATER_WHEEL_MSEC (ERTS_TW_LATER_WHEEL_SIZE*ERTS_TW_SOON_WHEEL_MSEC/2)
+
+#define ERTS_TIMER_WHEEL_MSEC ERTS_TW_LATER_WHEEL_MSEC
struct erts_time_sup_read_only__ {
ErtsMonotonicTime monotonic_time_unit;
@@ -412,34 +448,25 @@ erts_time_unit_conversion(Uint64 value,
void erts_sched_init_time_sup(ErtsSchedulerData *esdp);
-#define ERTS_TWHEEL_SLOT_AT_ONCE -1
-#define ERTS_TWHEEL_SLOT_INACTIVE -2
+#define ERTS_TW_SLOT_INACTIVE (-2)
/*
** Timer entry:
*/
typedef struct erl_timer {
- struct erl_timer* next; /* next entry tiw slot or chain */
- struct erl_timer* prev; /* prev entry tiw slot or chain */
- union {
- struct {
- void (*timeout)(void*); /* called when timeout */
- void (*cancel)(void*); /* called when cancel (may be NULL) */
- void* arg; /* argument to timeout/cancel procs */
- } func;
- ErtsThrPrgrLaterOp cleanup;
- } u;
ErtsMonotonicTime timeout_pos; /* Timeout in absolute clock ticks */
+ struct erl_timer* next; /* next entry tiw slot or chain */
+ struct erl_timer* prev; /* prev entry tiw slot or chain */
+ void (*timeout)(void*); /* called when timeout */
+ void* arg; /* argument to timeout/cancel procs */
int slot;
} ErtsTWheelTimer;
typedef void (*ErlTimeoutProc)(void*);
-typedef void (*ErlCancelProc)(void*);
void erts_twheel_set_timer(ErtsTimerWheel *tiw,
ErtsTWheelTimer *p, ErlTimeoutProc timeout,
- ErlCancelProc cancel, void *arg,
- ErtsMonotonicTime timeout_pos);
+ void *arg, ErtsMonotonicTime timeout_pos);
void erts_twheel_cancel_timer(ErtsTimerWheel *tiw, ErtsTWheelTimer *p);
ErtsTimerWheel *erts_create_timer_wheel(ErtsSchedulerData *esdp);
@@ -447,12 +474,13 @@ ErtsMonotonicTime erts_check_next_timeout_time(ErtsSchedulerData *);
ERTS_GLB_INLINE void erts_twheel_init_timer(ErtsTWheelTimer *p);
ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef);
+ERTS_GLB_INLINE ErtsMonotonicTime erts_tweel_read_timeout(ErtsTWheelTimer *twt);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void erts_twheel_init_timer(ErtsTWheelTimer *p)
{
- p->slot = ERTS_TWHEEL_SLOT_INACTIVE;
+ p->slot = ERTS_TW_SLOT_INACTIVE;
}
ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef nxt_tmo_ref)
@@ -460,6 +488,12 @@ ERTS_GLB_INLINE ErtsMonotonicTime erts_next_timeout_time(ErtsNextTimeoutRef nxt_
return *((ErtsMonotonicTime *) nxt_tmo_ref);
}
+ERTS_GLB_INLINE ErtsMonotonicTime
+erts_tweel_read_timeout(ErtsTWheelTimer *twt)
+{
+ return twt->timeout_pos;
+}
+
#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
void