Proposal: provide runtime sigprocmask api to block some signal for go runtime

[hui zhang]

check this  https://groups.google.com/forum/#!topic/golang-nuts/1YvP-5V6xSI

when we code golang with c,   some c code used   sigwait  sigwaitinfo function to wait signal.

sometime this signal is caught by golang runtime,  and this cause cash.

we want the signal continue to be handled by sigwait  sigwaitinfo

[Jim Idle]

Note that you must not use sigprocmask in multi-threaded processes, because each thread has its own signal mask and there is no single process signal mask. According to POSIX, the behavior of sigprocmask in a multi-threaded process is “unspecified”. 

There is a lot more to signal handling than sigprocmask. If you read through all the docs, you should be able to work out what you want to do. 

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[hui zhang]

thanks

I found a way throungh.

dynamic load so dlopen("go.so")  in main function after pthread_sigmask

this let go runtime start after father thread , and have the same sigmask.