I'm going to use CGO to call c++ in my project and do some performance tests. So I do research on cgo, and find that calling a C function from Go code won't block other goroutines from running. I view the cgocall code (runtime/cgocall.go, is there any official doc?), it seems that calling a C function from Go code in cgo would lock g to m and call entersyscall (dose it means new a thread for running ?). If in go code I make lots of C function calling, will the program new a thread for each calling?
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