From 9c78f149517dc02457d4c59e90bc9b03d411e28c Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Tue, 5 May 2015 20:05:00 +0200
Subject: Optimized timer implementation

---
 erts/emulator/beam/erl_hl_timer.h | 80 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 erts/emulator/beam/erl_hl_timer.h

(limited to 'erts/emulator/beam/erl_hl_timer.h')

diff --git a/erts/emulator/beam/erl_hl_timer.h b/erts/emulator/beam/erl_hl_timer.h
new file mode 100644
index 0000000000..30889a71da
--- /dev/null
+++ b/erts/emulator/beam/erl_hl_timer.h
@@ -0,0 +1,80 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2015. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+
+#ifndef ERL_HL_TIMER_H__
+#define ERL_HL_TIMER_H__
+
+typedef struct ErtsHLTimer_ ErtsBifTimers;
+typedef struct ErtsHLTimerService_ ErtsHLTimerService;
+
+#include "sys.h"
+#include "erl_process.h"
+#define ERL_PORT_GET_PORT_TYPE_ONLY__
+#include "erl_port.h"
+#undef ERL_PORT_GET_PORT_TYPE_ONLY__
+#include "erl_message.h"
+#include "erl_alloc_types.h"
+
+#define ERTS_PTMR_NONE ((erts_aint_t) NULL)
+#define ERTS_PTMR_TIMEDOUT (ERTS_PTMR_NONE + ((erts_aint_t) 1))
+
+#define ERTS_PTMR_INIT(P) \
+    erts_smp_atomic_init_nob(&(P)->common.timer, ERTS_PTMR_NONE)
+#define ERTS_PTMR_IS_SET(P) \
+    (ERTS_PTMR_NONE != erts_smp_atomic_read_nob(&(P)->common.timer))
+#define ERTS_PTMR_IS_TIMED_OUT(P) \
+    (ERTS_PTMR_TIMEDOUT == erts_smp_atomic_read_nob(&(P)->common.timer))
+
+#define ERTS_PTMR_CLEAR(P)					\
+    do {							\
+	ASSERT(ERTS_PTMR_IS_TIMED_OUT((P)));			\
+	erts_smp_atomic_set_nob(&(P)->common.timer,		\
+				ERTS_PTMR_NONE);		\
+    } while (0)
+
+size_t erts_timer_type_size(ErtsAlcType_t type);
+int erts_set_proc_timer_term(Process *, Eterm);
+void erts_set_proc_timer_uword(Process *, UWord);
+void erts_cancel_proc_timer(Process *);
+void erts_set_port_timer(Port *, Sint64);
+void erts_cancel_port_timer(Port *);
+Sint64 erts_read_port_timer(Port *);
+int erts_cancel_bif_timers(Process *, ErtsBifTimers *, void **);
+int erts_detach_accessor_bif_timers(Process *, ErtsBifTimers *, void **);
+ErtsHLTimerService *erts_create_timer_service(void);
+void erts_hl_timer_init(void);
+
+#ifdef ERTS_SMP
+void
+erts_handle_canceled_timers(void *vesdp,
+			    int *need_thr_progress,
+			    ErtsThrPrgrVal *thr_prgr_p,
+			    int *need_more_work);
+#endif
+
+Uint erts_bif_timer_memory_size(void);
+void erts_print_bif_timer_info(int to, void *to_arg);
+
+void erts_debug_bif_timer_foreach(void (*func)(Eterm,
+					       Eterm,
+					       ErlHeapFragment *,
+					       void *),
+				  void *arg);
+
+#endif /* ERL_HL_TIMER_H__ */
-- 
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