Get number of logical processors on the system.
#include <zircon/syscalls.h> uint32_t zx_system_get_num_cpus(void);
zx_system_get_num_cpus() returns the number of CPUs (logical processors)
that exist on the system currently running. This number cannot change
during a run of the system, only at boot time.
zx_system_get_num_cpus() returns the number of CPUs.
zx_system_get_num_cpus() cannot fail.
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