[PATCH] record: Add support for interrupt handlers

Sebastian Huber sebastian.huber at embedded-brains.de
Wed Sep 4 11:46:32 UTC 2019


On 04/09/2019 08:06, Chris Johns wrote:
>> +void LTTNGClient::WriteIRQHandlerExit(PerCPUContext* pcpu, const ClientItem& item) {
>> +  pcpu->content_size += kEventIRQHandlerExitBits;
>> +  pcpu->packet_size += kEventIRQHandlerExitBits;
>> +
>> +  EventIRQHandlerExit& ih = pcpu->irq_handler_exit;
>> +  ih.header.ns = item.ns;
>> +  ih.irq = static_cast<int32_t>(item.data);
>> +  fwrite(&ih, sizeof(ih), 1, pcpu->event_stream);
> https://en.cppreference.com/w/cpp/io  :)

I had a look a this, it seems the error reporting capabilities of 
<fstream> are quite bad (nothing like strerror(errno)). A C++ 
alternative would be:

https://www.boost.org/doc/libs/1_70_0/libs/filesystem/doc/index.htm

-- 
Sebastian Huber, embedded brains GmbH

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