dragonpilot - 基於 openpilot 的開源駕駛輔助系統
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#include "selfdrive/common/watchdog.h"
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#include "selfdrive/common/timing.h"
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#include "selfdrive/common/util.h"
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const std::string watchdog_fn_prefix = "/dev/shm/wd_"; // + <pid>
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bool watchdog_kick() {
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static std::string fn = watchdog_fn_prefix + std::to_string(getpid());
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uint64_t ts = nanos_since_boot();
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return util::write_file(fn.c_str(), &ts, sizeof(ts), O_WRONLY | O_CREAT) > 0;
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}
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