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https://github.com/Telecominfraproject/OpenCellular.git
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0a45fa1708
This is the first version of pthread-based RTOS emulator. With this, we will be able to test high-level modules entirely on the host machine. BUG=chrome-os-partner:19325 TEST='make runtests' and see tests passing. BRANCH=None Change-Id: I1f5fcd76aa84bdb46c7d35c5e60ae5d92fd3a319 Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/49954 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
62 lines
1.0 KiB
C
62 lines
1.0 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Timer module */
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#include <stdint.h>
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#include <stdio.h>
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#include <time.h>
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#include "task.h"
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#include "timer.h"
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static timestamp_t boot_time;
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void usleep(unsigned us)
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{
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task_wait_event(us);
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}
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timestamp_t _get_time(void)
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{
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struct timespec ts;
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timestamp_t ret;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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ret.val = 1000000 * (uint64_t)ts.tv_sec + ts.tv_nsec / 1000;
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return ret;
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}
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timestamp_t get_time(void)
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{
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timestamp_t ret = _get_time();
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ret.val -= boot_time.val;
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return ret;
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}
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void udelay(unsigned us)
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{
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timestamp_t deadline = get_time();
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deadline.val += us;
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while (get_time().val < deadline.val)
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;
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}
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int timestamp_expired(timestamp_t deadline, const timestamp_t *now)
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{
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timestamp_t now_val;
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if (!now) {
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now_val = get_time();
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now = &now_val;
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}
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return ((int64_t)(now->val - deadline.val) >= 0);
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}
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void timer_init(void)
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{
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boot_time = _get_time();
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}
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