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https://github.com/espressif/esp-protocols.git
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c89d42f272
Loopback terminal uses std::async to inject test data to the test terminal. There was a hazardeous condition when destructing the terminal while async batch_read() was in progress. Adding a signal and waiting for destruction solves the issue.
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
/*
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* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#pragma once
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#include "cxx_include/esp_modem_api.hpp"
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#include "cxx_include/esp_modem_terminal.hpp"
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using namespace esp_modem;
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class LoopbackTerm : public Terminal {
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public:
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explicit LoopbackTerm(bool is_bg96);
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explicit LoopbackTerm();
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~LoopbackTerm() override;
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/**
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* @brief Inject user data to the terminal, to respond.
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* inject_by defines batch sizes: the read callback is called multiple times
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* with partial data of `inject_by` size
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*/
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int inject(uint8_t *data, size_t len, size_t inject_by, size_t delay_before = 0, size_t delay_after = 1);
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void start() override;
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void stop() override;
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int write(uint8_t *data, size_t len) override;
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int read(uint8_t *data, size_t len) override;
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void set_read_cb(std::function<bool(uint8_t *data, size_t len)> f) override;
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private:
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enum class status_t {
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STARTED,
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STOPPED
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};
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void batch_read();
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std::function<bool(uint8_t *data, size_t len)> user_on_read;
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status_t status;
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SignalGroup signal;
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void init_signal();
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std::vector<uint8_t> loopback_data;
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size_t data_len;
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bool pin_ok;
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bool is_bg96;
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size_t inject_by;
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size_t delay_before_inject;
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size_t delay_after_inject;
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std::vector<std::future<void>> async_results;
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Lock on_read_guard;
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};
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