From a9459bc7233e92a6516c3fbc8a18a9d33966e244 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Sun, 2 Feb 2014 00:57:06 +0200
Subject: [PATCH] unix: Add basic time module (with time() and clock()
 functions).

Both return int so far (single-precision float doesn't have enough
bits to represent int32 precisely).
---
 unix/Makefile        |  4 ++++
 unix/main.c          |  4 ++++
 unix/mpconfigport.mk |  3 +++
 unix/time.c          | 25 +++++++++++++++++++++++++
 4 files changed, 36 insertions(+)
 create mode 100644 unix/time.c

diff --git a/unix/Makefile b/unix/Makefile
index 00e7e9460..a1a6a7102 100644
--- a/unix/Makefile
+++ b/unix/Makefile
@@ -14,6 +14,10 @@ include ../py/py.mk
 CFLAGS = -I. -I$(PY_SRC) -Wall -Werror -ansi -std=gnu99 -DUNIX $(CFLAGS_MOD)
 LDFLAGS = $(LDFLAGS_MOD) -lm
 
+ifeq ($(MICROPY_MOD_TIME),1)
+CFLAGS_MOD += -DMICROPY_MOD_TIME=1
+SRC_MOD += time.c
+endif
 ifeq ($(MICROPY_MOD_FFI),1)
 CFLAGS_MOD += `pkg-config --cflags libffi` -DMICROPY_MOD_FFI=1
 LDFLAGS_MOD += -ldl -lffi
diff --git a/unix/main.c b/unix/main.c
index 5ca811536..cc942163f 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -24,6 +24,7 @@
 extern const mp_obj_fun_native_t mp_builtin_open_obj;
 void file_init();
 void rawsocket_init();
+void time_init();
 void ffi_init();
 
 static void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
@@ -242,6 +243,9 @@ int main(int argc, char **argv) {
 
     file_init();
     rawsocket_init();
+#if MICROPY_MOD_TIME
+    time_init();
+#endif
 #if MICROPY_MOD_FFI
     ffi_init();
 #endif
diff --git a/unix/mpconfigport.mk b/unix/mpconfigport.mk
index d22033939..6c7be237b 100644
--- a/unix/mpconfigport.mk
+++ b/unix/mpconfigport.mk
@@ -1,4 +1,7 @@
 # Enable/disable modules to be included in interpreter
 
+# Subset of CPython time module
+MICROPY_MOD_TIME = 1
+
 # ffi module requires libffi (libffi-dev Debian package)
 MICROPY_MOD_FFI = 0
diff --git a/unix/time.c b/unix/time.c
new file mode 100644
index 000000000..acea69178
--- /dev/null
+++ b/unix/time.c
@@ -0,0 +1,25 @@
+#include <string.h>
+#include <time.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "qstr.h"
+#include "obj.h"
+#include "runtime.h"
+
+static mp_obj_t mod_time_time() {
+    return mp_obj_new_int((machine_int_t)time(NULL));
+}
+static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_time_obj, mod_time_time);
+
+// Note: this is deprecated since CPy3.3, but pystone still uses it.
+static mp_obj_t mod_time_clock() {
+    return mp_obj_new_int((machine_int_t)clock());
+}
+static MP_DEFINE_CONST_FUN_OBJ_0(mod_time_clock_obj, mod_time_clock);
+
+void time_init() {
+    mp_obj_t m = mp_obj_new_module(QSTR_FROM_STR_STATIC("time"));
+    rt_store_attr(m, QSTR_FROM_STR_STATIC("time"), (mp_obj_t)&mod_time_time_obj);
+    rt_store_attr(m, QSTR_FROM_STR_STATIC("clock"), (mp_obj_t)&mod_time_clock_obj);
+}
-- 
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