跟踪asio日志
#define BOOST_ASIO_ENABLE_HANDLER_TRACKING
#include
./a.out 2>out.log
sudo apt-get install graphviz
perl handlerviz.pl < out.log | dot -Tpng > out.png
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@asio|1528964168.087468|01|signal_set@0x7ffc87552888.async_wait
@asio|1528964168.087629|02|signal_set@0x7ffc87552888.async_wait@asio|1528964181.199519|>1|ec=system:0,signal_number=10
br/>@asio|1528964181.199519|>1|ec=system:0,signal_number=10
2|ec=system:0,signal_number=10
br/>@asio|1528964181.199628|>2|ec=system:0,signal_number=10
@asio|1528964181.199717|0|signal_set@0x7ffc87552888.cancel
out.log格式解释,请参考 https://www.boost.org/doc/libs/1_47_0/doc/html/boost_asio/overview/core/handler_tracking.html
摘抄过来:
Each line is of the form:
The
The
The
n
The program entered the handler number n. The shows the arguments to the handler.
!n ~n n*m n Where the As shown above, Each handler is assigned a numeric identifier. Where the handler tracking output shows a handler number of 0, it means that the action was performed outside of any handler.The program left handler number n.
The program left handler number n due to an exception.
The handler number n was destroyed without having been invoked. This is usually the case for any unfinished asynchronous operations when the io_service is destroyed.
The handler number n created a new asynchronous operation with completion handler number m. The
The handler number n performed some other operation. The
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