Diff: platform/common/timer.c

Revision:

0:082731ede69f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/platform/common/timer.c	Wed May 30 20:59:51 2018 +0000
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2010-2015 Amazon.com, Inc. or its affiliates. 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.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+/**
+ * @file timer.c
+ * @brief Linux implementation of the timer interface.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+//#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <stdio.h>
+//#include <sys/time.h>
+#include <time.h>
+ 
+
+#include "timer_platform.h"
+
+#define timerclear(tvp)         ((tvp)->tv_sec = (tvp)->tv_usec = 0)
+#define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
+#define timercmp(tvp, uvp, cmp)                                 \
+        (((tvp)->tv_sec == (uvp)->tv_sec) ?                             \
+            ((tvp)->tv_usec cmp (uvp)->tv_usec) :                       \
+            ((tvp)->tv_sec cmp (uvp)->tv_sec))
+#define timeradd(tvp, uvp, vvp)                                         \
+        do {                                                            \
+                (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;          \
+                (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;       \
+                if ((vvp)->tv_usec >= 1000000) {                        \
+                        (vvp)->tv_sec++;                                \
+                        (vvp)->tv_usec -= 1000000;                      \
+                }                                                       \
+        } while (0)
+#define timersub(tvp, uvp, vvp)                                         \
+        do {                                                            \
+                (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
+                (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
+                if ((vvp)->tv_usec < (time_t)0) {                               \
+                        (vvp)->tv_sec--;                                \
+                        (vvp)->tv_usec += 1000000;                      \
+                }                                                       \
+        } while (0)
+
+volatile uint32_t mscount = 0;
+
+void onMillisecondTicker(void){
+    mscount++;
+}
+
+void mbed_gettimeofday(struct timeval *now)
+{
+    uint32_t cnt = mscount;
+    now->tv_sec = time(NULL);
+    now->tv_usec= cnt - ((long)cnt/1000)*1000;
+}
+
+
+bool has_timer_expired(awsTimer *timer) {
+	struct timeval now, res;
+	mbed_gettimeofday(&now);
+	timersub(&timer->end_time, &now, &res);
+	return res.tv_sec < 0 || (res.tv_sec == 0 && res.tv_usec <= 0);
+}
+
+void countdown_ms(awsTimer *timer, uint32_t timeout) {
+	struct timeval now;
+#ifdef __cplusplus
+	struct timeval interval = {timeout / 1000, static_cast<int>((timeout % 1000) * 1000)};
+#else
+	struct timeval interval = {timeout / 1000, (int)((timeout % 1000) * 1000)};
+#endif
+	mbed_gettimeofday(&now);
+	timeradd(&now, &interval, &timer->end_time);
+}
+
+uint32_t left_ms(awsTimer *timer) {
+	struct timeval now, res;
+	uint32_t result_ms = 0;
+	mbed_gettimeofday(&now);
+	timersub(&timer->end_time, &now, &res);
+	if(res.tv_sec >= 0) {
+		result_ms = (uint32_t) (res.tv_sec * 1000 + res.tv_usec / 1000);
+	}
+	return result_ms;
+}
+
+void countdown_sec(awsTimer *timer, uint32_t timeout) {
+	struct timeval now;
+	struct timeval interval = {timeout, 0};
+	mbed_gettimeofday(&now);
+	timeradd(&now, &interval, &timer->end_time);
+}
+
+void init_timer(awsTimer *timer) {
+	timer->end_time = (struct timeval) {0, 0};
+}
+
+#ifdef __cplusplus
+}
+#endif
+