cpython/Lib/test/dtracedata/call_stack.bt at 19f3abdf45dd50d16984de443827ca12cb976212 · Delta-in-hub/cpython · GitHub

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@seq = 0;

usdt:@TARGET@:python:function__entry /str(args->arg1) == "start"/ {
    @trace[tid] = 1;
    @indent[tid] = 0;
}

usdt:@TARGET@:python:function__entry /@trace[tid]/ {
    @seq += 1;
    printf("%d\t%15s:", (int)@seq, "function-entry");
    printf("%*s", @indent[tid], "");
    printf("%s:%s:%d:%s\n", str(args->arg0), str(args->arg1), args->arg2,
           str(args->arg3));
    @indent[tid] = @indent[tid] + 1;
}

usdt:@TARGET@:python:function__return /@trace[tid]/ {
    @indent[tid] = @indent[tid] - 1;
    @seq += 1;
    printf("%d\t%15s:", (int)@seq, "function-return");
    printf("%*s", @indent[tid], "");
    printf("%s:%s:%d:%s\n", str(args->arg0), str(args->arg1), args->arg2,
           str(args->arg3));
}

usdt:@TARGET@:python:function__return /str(args->arg1) == "start"/ {
    @trace[tid] = 0;
    @indent[tid] = 0;
}