241 static numa_interleave_memory_v2_func_t _numa_interleave_memory_v2;
242 static numa_set_bind_policy_func_t _numa_set_bind_policy;
243 static numa_bitmask_isbitset_func_t _numa_bitmask_isbitset;
244 static numa_distance_func_t _numa_distance;
245 static unsigned long* _numa_all_nodes;
246 static struct bitmask* _numa_all_nodes_ptr;
247 static struct bitmask* _numa_nodes_ptr;
248
249 static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; }
250 static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; }
251 static void set_numa_max_node(numa_max_node_func_t func) { _numa_max_node = func; }
252 static void set_numa_num_configured_nodes(numa_num_configured_nodes_func_t func) { _numa_num_configured_nodes = func; }
253 static void set_numa_available(numa_available_func_t func) { _numa_available = func; }
254 static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
255 static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
256 static void set_numa_interleave_memory_v2(numa_interleave_memory_v2_func_t func) { _numa_interleave_memory_v2 = func; }
257 static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
258 static void set_numa_bitmask_isbitset(numa_bitmask_isbitset_func_t func) { _numa_bitmask_isbitset = func; }
259 static void set_numa_distance(numa_distance_func_t func) { _numa_distance = func; }
260 static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
261 static void set_numa_all_nodes_ptr(struct bitmask **ptr) { _numa_all_nodes_ptr = *ptr; }
262 static void set_numa_nodes_ptr(struct bitmask **ptr) { _numa_nodes_ptr = *ptr; }
263 static int sched_getcpu_syscall(void);
264 public:
265 static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
266 static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
267 return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
268 }
269 static int numa_max_node() { return _numa_max_node != NULL ? _numa_max_node() : -1; }
270 static int numa_num_configured_nodes() {
271 return _numa_num_configured_nodes != NULL ? _numa_num_configured_nodes() : -1;
272 }
273 static int numa_available() { return _numa_available != NULL ? _numa_available() : -1; }
274 static int numa_tonode_memory(void *start, size_t size, int node) {
275 return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1;
276 }
277 static void numa_interleave_memory(void *start, size_t size) {
278 // Use v2 api if available
279 if (_numa_interleave_memory_v2 != NULL && _numa_all_nodes_ptr != NULL) {
280 _numa_interleave_memory_v2(start, size, _numa_all_nodes_ptr);
281 } else if (_numa_interleave_memory != NULL && _numa_all_nodes != NULL) {
282 _numa_interleave_memory(start, size, _numa_all_nodes);
286 if (_numa_set_bind_policy != NULL) {
287 _numa_set_bind_policy(policy);
288 }
289 }
290 static int numa_distance(int node1, int node2) {
291 return _numa_distance != NULL ? _numa_distance(node1, node2) : -1;
292 }
293 static int get_node_by_cpu(int cpu_id);
294 static int get_existing_num_nodes();
295 // Check if numa node is configured (non-zero memory node).
296 static bool isnode_in_configured_nodes(unsigned int n) {
297 if (_numa_bitmask_isbitset != NULL && _numa_all_nodes_ptr != NULL) {
298 return _numa_bitmask_isbitset(_numa_all_nodes_ptr, n);
299 } else
300 return 0;
301 }
302 // Check if numa node exists in the system (including zero memory nodes).
303 static bool isnode_in_existing_nodes(unsigned int n) {
304 if (_numa_bitmask_isbitset != NULL && _numa_nodes_ptr != NULL) {
305 return _numa_bitmask_isbitset(_numa_nodes_ptr, n);
306 } else
307 return 0;
308 }
309 };
310
311 #endif // OS_LINUX_VM_OS_LINUX_HPP
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241 static numa_interleave_memory_v2_func_t _numa_interleave_memory_v2;
242 static numa_set_bind_policy_func_t _numa_set_bind_policy;
243 static numa_bitmask_isbitset_func_t _numa_bitmask_isbitset;
244 static numa_distance_func_t _numa_distance;
245 static unsigned long* _numa_all_nodes;
246 static struct bitmask* _numa_all_nodes_ptr;
247 static struct bitmask* _numa_nodes_ptr;
248
249 static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; }
250 static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; }
251 static void set_numa_max_node(numa_max_node_func_t func) { _numa_max_node = func; }
252 static void set_numa_num_configured_nodes(numa_num_configured_nodes_func_t func) { _numa_num_configured_nodes = func; }
253 static void set_numa_available(numa_available_func_t func) { _numa_available = func; }
254 static void set_numa_tonode_memory(numa_tonode_memory_func_t func) { _numa_tonode_memory = func; }
255 static void set_numa_interleave_memory(numa_interleave_memory_func_t func) { _numa_interleave_memory = func; }
256 static void set_numa_interleave_memory_v2(numa_interleave_memory_v2_func_t func) { _numa_interleave_memory_v2 = func; }
257 static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
258 static void set_numa_bitmask_isbitset(numa_bitmask_isbitset_func_t func) { _numa_bitmask_isbitset = func; }
259 static void set_numa_distance(numa_distance_func_t func) { _numa_distance = func; }
260 static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
261 static void set_numa_all_nodes_ptr(struct bitmask **ptr) { _numa_all_nodes_ptr = (ptr == NULL ? NULL : *ptr); }
262 static void set_numa_nodes_ptr(struct bitmask **ptr) { _numa_nodes_ptr = (ptr == NULL ? NULL : *ptr); }
263 static int sched_getcpu_syscall(void);
264 public:
265 static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
266 static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
267 return _numa_node_to_cpus != NULL ? _numa_node_to_cpus(node, buffer, bufferlen) : -1;
268 }
269 static int numa_max_node() { return _numa_max_node != NULL ? _numa_max_node() : -1; }
270 static int numa_num_configured_nodes() {
271 return _numa_num_configured_nodes != NULL ? _numa_num_configured_nodes() : -1;
272 }
273 static int numa_available() { return _numa_available != NULL ? _numa_available() : -1; }
274 static int numa_tonode_memory(void *start, size_t size, int node) {
275 return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1;
276 }
277 static void numa_interleave_memory(void *start, size_t size) {
278 // Use v2 api if available
279 if (_numa_interleave_memory_v2 != NULL && _numa_all_nodes_ptr != NULL) {
280 _numa_interleave_memory_v2(start, size, _numa_all_nodes_ptr);
281 } else if (_numa_interleave_memory != NULL && _numa_all_nodes != NULL) {
282 _numa_interleave_memory(start, size, _numa_all_nodes);
286 if (_numa_set_bind_policy != NULL) {
287 _numa_set_bind_policy(policy);
288 }
289 }
290 static int numa_distance(int node1, int node2) {
291 return _numa_distance != NULL ? _numa_distance(node1, node2) : -1;
292 }
293 static int get_node_by_cpu(int cpu_id);
294 static int get_existing_num_nodes();
295 // Check if numa node is configured (non-zero memory node).
296 static bool isnode_in_configured_nodes(unsigned int n) {
297 if (_numa_bitmask_isbitset != NULL && _numa_all_nodes_ptr != NULL) {
298 return _numa_bitmask_isbitset(_numa_all_nodes_ptr, n);
299 } else
300 return 0;
301 }
302 // Check if numa node exists in the system (including zero memory nodes).
303 static bool isnode_in_existing_nodes(unsigned int n) {
304 if (_numa_bitmask_isbitset != NULL && _numa_nodes_ptr != NULL) {
305 return _numa_bitmask_isbitset(_numa_nodes_ptr, n);
306 } else if (_numa_bitmask_isbitset != NULL && _numa_all_nodes_ptr != NULL) {
307 // Not all libnuma API v2 implement numa_nodes_ptr, so it's not possible
308 // to trust the API version for checking its absence. On the other hand,
309 // numa_nodes_ptr found in libnuma 2.0.9 and above is the only way to get
310 // a complete view of all numa nodes in the system, hence numa_nodes_ptr
311 // is used to handle CPU and nodes on architectures (like PowerPC) where
312 // it can exist nodes with CPUs but no memory or vice-versa and the nodes
313 // are besides that non-contiguous. For most of the architectures, like
314 // x86_64, numa_node_ptr presents the same node set as found in
315 // numa_all_nodes_ptr so it's possible to use numa_all_nodes_ptr as a
316 // substitute.
317 return _numa_bitmask_isbitset(_numa_all_nodes_ptr, n);
318 } else
319 return 0;
320 }
321 };
322
323 #endif // OS_LINUX_VM_OS_LINUX_HPP
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