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a5ee66ade9
The previous cast would take the number of nanoseconds, cast them to an integer, and then add that to the previous command time. Now, we cast the nanoseconds duration to a number of seconds, represented as a double, first.
35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
//
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// Copyright 2016 Ettus Research
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// Copyright 2018 Ettus Research, a National Instruments Company
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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//
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#include <uhd/usrp/dboard_iface.hpp>
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#include <chrono>
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#include <thread>
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using namespace uhd::usrp;
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void dboard_iface::sleep(const std::chrono::nanoseconds& time)
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{
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// This sleep function is intended to create a delay on the
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// device. If a command time is set, just increment that time.
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// If not, the best we can do is just do a sleep on the host.
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// FIXME: Create a delay in the FPGA on the device.
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auto cmd_time = get_command_time();
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if (cmd_time.get_real_secs() != 0.0) {
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// Cast to double-represented duration so that time_spec_t() ctor knows
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// which overloaded ctor to choose
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const std::chrono::duration<double> time_s = time;
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set_command_time(cmd_time + uhd::time_spec_t(time_s.count()));
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} else {
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// nanosleep is not really accurate in userland and it is also not very
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// cross-platform. So just sleep for the minimum amount of time in us.
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if (time < std::chrono::microseconds(1)) {
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std::this_thread::sleep_for(std::chrono::microseconds(1));
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} else {
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std::this_thread::sleep_for(std::chrono::nanoseconds(time.count()));
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}
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}
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}
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