From 0985a53df2210f97973da1d91e73f0fa37f6a44c Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Mon, 6 Oct 2014 23:26:21 +0800
Subject: [PATCH] language/core: add time_to_cycles and cycles_to_time

---
 artiq/language/core.py     | 20 +++++++++++++++++++-
 artiq/transforms/inline.py |  1 +
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/artiq/language/core.py b/artiq/language/core.py
index 8909cf7d9..bd8ecdb62 100644
--- a/artiq/language/core.py
+++ b/artiq/language/core.py
@@ -232,6 +232,8 @@ class _DummyTimeManager:
     take_time = _not_implemented
     get_time = _not_implemented
     set_time = _not_implemented
+    time_to_cycles = _not_implemented
+    cycles_to_time = _not_implemented
 
 _time_manager = _DummyTimeManager()
 
@@ -265,7 +267,9 @@ def set_syscall_manager(syscall_manager):
 
 # global namespace for kernels
 
-kernel_globals = "sequential", "parallel", "delay", "now", "at", "syscall"
+kernel_globals = ("sequential", "parallel",
+    "delay", "now", "at", "time_to_cycles", "cycles_to_time",
+    "syscall")
 
 
 class _Sequential:
@@ -319,6 +323,20 @@ def at(time):
     _time_manager.set_time(time)
 
 
+def time_to_cycles(time):
+    """Converts time to the corresponding number of RTIO cycles.
+
+    """
+    return _time_manager.time_to_cycles(time)
+
+
+def cycles_to_time(cycles):
+    """Converts RTIO cycles to the corresponding time.
+
+    """
+    return _time_manager.cycles_to_time(cycles)
+
+
 def syscall(*args):
     """Invokes a service of the runtime.
 
diff --git a/artiq/transforms/inline.py b/artiq/transforms/inline.py
index 6a846cfaa..ed9fab890 100644
--- a/artiq/transforms/inline.py
+++ b/artiq/transforms/inline.py
@@ -104,6 +104,7 @@ class _ReferenceManager:
 
 _embeddable_calls = (
     core_language.delay, core_language.at, core_language.now,
+    core_language.time_to_cycles, core_language.cycles_to_time,
     core_language.syscall,
     range, int, float, round,
     core_language.int64, core_language.round64, core_language.array,