關閉程式前發送EOS事件給pipeline的方法

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// 發送EOS訊號讓filesink可以正常結束
gst_element_send_event(appCtx[i]->pipeline.pipeline, gst_event_new_eos());
msg = gst_bus_timed_pop_filtered(GST_ELEMENT_BUS (appCtx[i]->pipeline.pipeline), 
GST_CLOCK_TIME_NONE, 
(GstMessageType) (GST_MESSAGE_ERROR | GST_MESSAGE_EOS));//gst_bus_timed_pop_filtered 是synchronously取得訊號，如果沒有訊號會一直等待並把執行續卡住
gst_element_set_state (appCtx[i]->pipeline.pipeline, GST_STATE_NULL);
g_main_loop_quit (main_loop);

https://gstreamer.freedesktop.org/documentation/gstreamer/gstelement.html#gst_element_get_state

https://gstreamer-devel.narkive.com/g1omJFAj/gst-devel-graceful-exit-shutdown-of-a-pipeline#post3

https://stackoverflow.com/questions/38170733/gstreamer-not-flushing-to-the-filesink

範例

https://gitlab.freedesktop.org/freedesktop/snippets/-/snippets/1760

https://gist.github.com/CaptainOnly/f88cbb6ac5fdeae80200fbb3f7be695c

用nmtui設定

顯示目前路由表

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ip route

用ip route add設定

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ip route add 10.179.102.0/24 via 10.179.20.254 dev enp75s0f1

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring-static-routes_configuring-and-managing-networking#proc_configuring-a-static-route-by-using-nmtui_configuring-static-routes

用nmtui設定

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring-static-routes_configuring-and-managing-networking#proc_configuring-a-static-route-by-using-nmtui_configuring-static-routes

如果硬碟沒有分割區，可以用以下指令擴大硬碟區域:
https://unix.stackexchange.com/questions/643026/how-to-resize-a-disk-without-partition

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# resize2fs /dev/[DISK_ID][PARTITION_NUMBER]
resize2fs /dev/sdc

https://tech.sars.tw/posts/gcp-linux-enlarge-disk-size/

https://www.tecmint.com/parted-command-create-linux-partitions/

https://godleon.github.io/blog/Linux/Linux-extend-lvm-from-unused-space/

LVM說明
https://linux.vbird.org/linux_basic_train/centos8/unit14.php

打開ssh登錄日誌

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nano /etc/ssh/sshd_config

如果硬碟沒有分割區，可以用以下指令擴大硬碟區域:
https://unix.stackexchange.com/questions/643026/how-to-resize-a-disk-without-partition

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# resize2fs /dev/[DISK_ID][PARTITION_NUMBER]
resize2fs /dev/sdc

https://tech.sars.tw/posts/gcp-linux-enlarge-disk-size/

https://www.tecmint.com/parted-command-create-linux-partitions/

https://godleon.github.io/blog/Linux/Linux-extend-lvm-from-unused-space/

LVM說明
https://linux.vbird.org/linux_basic_train/centos8/unit14.php

可以用symble link的方式，將服務檔放到/etc/systemd/system/目錄下，讓systemd管理服務。

更改service檔後，需執行以下指令，讓systemd重新載入設定檔:

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sudo systemctl daemon-reload
sudo systemctl enable appname
sudo systemctl start appname

移除服務:

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systemctl stop [servicename]
systemctl disable [servicename]
rm /your/service/locations/[servicename]
# and symlinks that might be related
rm /your/service/locations/[servicename] 
systemctl daemon-reload
systemctl reset-failed

查看服務整的log

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journalctl -u appname

參考:
製作fastapi服務
設定檔重載
symbolic link
移除服務

載入Region_TRT plugin

必須要載入libnvinfer_plugin，可以用python的trt.init_libnvinfer_plugins載入，

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TRT_LOGGER = trt.Logger(trt.Logger.ERROR)
trt.init_libnvinfer_plugins(TRT_LOGGER,"")

https://docs.nvidia.com/deeplearning/tensorrt/api/python_api/infer/Plugin/IPluginRegistry.html#tensorrt.init_libnvinfer_plugins

印出目前已經載入的plugin

PLUGIN_CREATORS = trt.get_plugin_registry().plugin_creator_list
for plugin_creator in PLUGIN_CREATORS:
print(plugin_creator.name)

參考並修改:https://developer.nvidia.com/zh-cn/blog/tensorrt-custom-layer-cn/

tensorrt Region layer 說明書

https://docs.nvidia.com/deeplearning/tensorrt/api/c_api/structnvinfer1_1_1plugin_1_1_region_parameters.html#ad2c6bba4f07221add9b6d9abf0a4e312

inference範例參考:
https://leimao.github.io/blog/TensorRT-Python-Inference/

VScode

(float[5])v_anchors
查看大小為5的float array

參考:
https://github.com/microsoft/vscode-cpptools/issues/688#issuecomment-299262784

https://stackoverflow.com/questions/52721440/how-to-expand-an-array-while-debugging-in-visual-studio-code

GDB

列印位址

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//變數c的位址
p&c

https://stackoverflow.com/questions/43861731/gdb-print-the-value-of-memory-address

列印位址的內容

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(gdb) p *(struct node *) 0x00000000004004fc

https://stackoverflow.com/questions/43861731/gdb-print-the-value-of-memory-address

segmentation fault 除錯

1. gdb run 並且帶入執行參數
   gdb –args executablename arg1 arg2 arg3
   (gdb) run

https://stackoverflow.com/questions/6121094/how-do-i-run-a-program-with-commandline-arguments-using-gdb-within-a-bash-script

2. https://www.cnblogs.com/realjimmy/p/12850884.html

參考:

https://hackernoon.com/how-to-set-up-c-debugging-in-vscode-using-a-makefile