500+ quant interview questions for Jane Street, Citadel, Two Sigma, DE Shaw, and other top quantitative finance firms.
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Difficulty: Medium
Category: systems
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Topics: systems, process-management, c++, state-machine
In quantitative finance, trading engines and market data handlers must run as robust, long-running background processes, or daemons. The standard "double-fork" technique ensures a process is fully detached from its controlling terminal, preventing termination from events like a dropped SSH session. This procedure involves a precise sequence of system calls to manage process groups, file descriptors, and the working directory. Task Implement the daemonize(SystemInterface& sys) method to perform
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