Add a thread-safe implementation of Process.currentDirectoryURL #4981
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posix_spawn_file_actions_addchdir_np is the official way to set the working directory of a spawned process and is supported on both macOS and glibc (Linux, etc.). This makes Process.currentDirectoryURL thread-safe, as the current approach will result in the working directory being nondeterministically assigned when spawning processes across multiple threads, using different working directories.
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posix_spawn_file_actions_addchdir_np is the official way to set the working directory of a spawned process and is supported on both macOS and glibc (Linux, etc.). This makes Process.currentDirectoryURL thread-safe, as the current approach will result in the working directory being nondeterministically assigned when spawning processes across multiple threads, using different working directories.