Re: [問題] 在不同process間使用callback function

[Ting1024 (無)]

※ 引述《chengcti (卡馬請出來面對!!)》之銘言：
: 1. IPC / mailslot, pipe, message.
:   not easy
: 2. file share (a simple method)
:   A, B always check a file every n secs.
:   When C writes a flag to file.
:   The A & B read it, and call his function.

        I recommand the original author to use dll
        shared memory.

        It doesn't get the drawback of frequently file I/O
        as you described above.

        Shared memory can be mapped to a different address in
        each process. For this reason, each process has its own
        instance of memory pointer, which is declared as a global
        variable so that it is available to all DLL functions.

        You can integrate the memory content and callback funcitons
        together, to achieve your purpose.


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推 sawang:感謝Ting1024，小弟對你使用shared memory的解法很有興趣
推 x000032001:期待可以在這串看到有趣的東西
→ chengcti:用 shared memory 吧, 簡單又不傷效能
→ sawang:抱歉問個問題，shared memory除了data之外也可以分享code嗎
→ sawang:我看到的範例是將一塊malloc來的空間attach到不同process
→ Ting1024:不用刻意想到那方面，DLL函示只要宣告export
→ Ting1024:本來就是共享的，每個人都可以去呼叫他...
→ Ting1024:只要針對記憶體不同狀態，呼叫對應處理函示即可。