60 lines
1.1 KiB
C++
60 lines
1.1 KiB
C++
#pragma once
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struct sEvent
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{
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sEvent() = default;
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~sEvent()
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{
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if (e) CloseHandle(e);
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}
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// event句柄，默认构造为0，Reset()或Set()时自动创建
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HANDLE e = nullptr;
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std::string errStr;
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bool Reset()
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{
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if (!e) // not created yet
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return (nullptr !=(e = CreateEvent(NULL, TRUE, FALSE, NULL)));// ManualReset, InitialState=FALSE
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else
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return bool(ResetEvent(e));
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}
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bool Set()
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{
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if(!e)// not created yet
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return (nullptr !=(e = CreateEvent(NULL, TRUE, TRUE, NULL))); // ManualReset, InitialState=TRUE
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else
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return bool(SetEvent(e));
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}
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int Wait(int timeout)
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{
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uint32_t wait_res = WaitForSingleObject(e, timeout);
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if(wait_res == WAIT_OBJECT_0) {
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errStr.clear();
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return 0;
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}else if(wait_res == WAIT_TIMEOUT) {
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errStr = "Timeout";
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return -1;
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} if (WAIT_FAILED == wait_res) {
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errStr = fmt::format("Fail({})", GetLastError());
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return -2;
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}else if(WAIT_ABANDONED == wait_res){
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errStr = "Abandoned";
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return -3;
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}
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else {
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errStr = fmt::format("Unknown error ({})", wait_res);
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return -4;
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}
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}
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inline operator HANDLE() const
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{
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return e;
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}
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};
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