| 1 | #define FIO_MAX_CPUS MAXIMUM_PROCESSORS |
| 2 | |
| 3 | typedef DWORD_PTR os_cpu_mask_t; |
| 4 | |
| 5 | static inline int fio_setaffinity(int pid, os_cpu_mask_t cpumask) |
| 6 | { |
| 7 | HANDLE h; |
| 8 | BOOL bSuccess = FALSE; |
| 9 | |
| 10 | h = OpenThread(THREAD_QUERY_INFORMATION | THREAD_SET_INFORMATION, TRUE, pid); |
| 11 | if (h != NULL) { |
| 12 | bSuccess = SetThreadAffinityMask(h, cpumask); |
| 13 | if (!bSuccess) |
| 14 | log_err("fio_setaffinity failed: failed to set thread affinity (pid %d, mask %.16llx)\n", pid, cpumask); |
| 15 | |
| 16 | CloseHandle(h); |
| 17 | } else { |
| 18 | log_err("fio_setaffinity failed: failed to get handle for pid %d\n", pid); |
| 19 | } |
| 20 | |
| 21 | return (bSuccess)? 0 : -1; |
| 22 | } |
| 23 | |
| 24 | static inline int fio_getaffinity(int pid, os_cpu_mask_t *mask) |
| 25 | { |
| 26 | os_cpu_mask_t systemMask; |
| 27 | |
| 28 | HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, TRUE, pid); |
| 29 | |
| 30 | if (h != NULL) { |
| 31 | GetProcessAffinityMask(h, mask, &systemMask); |
| 32 | CloseHandle(h); |
| 33 | } else { |
| 34 | log_err("fio_getaffinity failed: failed to get handle for pid %d\n", pid); |
| 35 | return -1; |
| 36 | } |
| 37 | |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | static inline void fio_cpu_clear(os_cpu_mask_t *mask, int cpu) |
| 42 | { |
| 43 | *mask &= ~(1ULL << cpu); |
| 44 | } |
| 45 | |
| 46 | static inline void fio_cpu_set(os_cpu_mask_t *mask, int cpu) |
| 47 | { |
| 48 | *mask |= 1ULL << cpu; |
| 49 | } |
| 50 | |
| 51 | static inline int fio_cpu_isset(os_cpu_mask_t *mask, int cpu) |
| 52 | { |
| 53 | return (*mask & (1ULL << cpu)) != 0; |
| 54 | } |
| 55 | |
| 56 | static inline int fio_cpu_count(os_cpu_mask_t *mask) |
| 57 | { |
| 58 | return hweight64(*mask); |
| 59 | } |
| 60 | |
| 61 | static inline int fio_cpuset_init(os_cpu_mask_t *mask) |
| 62 | { |
| 63 | *mask = 0; |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static inline int fio_cpuset_exit(os_cpu_mask_t *mask) |
| 68 | { |
| 69 | return 0; |
| 70 | } |