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comparison src/os/linux/vm/os_linux.hpp @ 10405:f2110083203d

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8005849: JEP 167: Event-Based JVM Tracing Reviewed-by: acorn, coleenp, sla Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author sla
date Mon, 10 Jun 2013 11:30:51 +0200
parents b4081e9714ec
children a837fa3d3f86
comparison
equal deleted inserted replaced
10404:d0add7016434 10405:f2110083203d
207 207
208 // none present 208 // none present
209 209
210 // LinuxThreads work-around for 6292965 210 // LinuxThreads work-around for 6292965
211 static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime); 211 static int safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime);
212
213
214 // Linux suspend/resume support - this helper is a shadow of its former
215 // self now that low-level suspension is barely used, and old workarounds
216 // for LinuxThreads are no longer needed.
217 class SuspendResume {
218 private:
219 volatile int _suspend_action;
220 volatile jint _state;
221 public:
222 // values for suspend_action:
223 enum {
224 SR_NONE = 0x00,
225 SR_SUSPEND = 0x01, // suspend request
226 SR_CONTINUE = 0x02, // resume request
227 SR_SUSPENDED = 0x20 // values for _state: + SR_NONE
228 };
229
230 SuspendResume() { _suspend_action = SR_NONE; _state = SR_NONE; }
231
232 int suspend_action() const { return _suspend_action; }
233 void set_suspend_action(int x) { _suspend_action = x; }
234
235 // atomic updates for _state
236 inline void set_suspended();
237 inline void clear_suspended();
238 bool is_suspended() { return _state & SR_SUSPENDED; }
239
240 };
241 212
242 private: 213 private:
243 typedef int (*sched_getcpu_func_t)(void); 214 typedef int (*sched_getcpu_func_t)(void);
244 typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen); 215 typedef int (*numa_node_to_cpus_func_t)(int node, unsigned long *buffer, int bufferlen);
245 typedef int (*numa_max_node_func_t)(void); 216 typedef int (*numa_max_node_func_t)(void);
331 status = pthread_cond_init (_cond, NULL); 302 status = pthread_cond_init (_cond, NULL);
332 assert_status(status == 0, status, "cond_init"); 303 assert_status(status == 0, status, "cond_init");
333 status = pthread_mutex_init (_mutex, NULL); 304 status = pthread_mutex_init (_mutex, NULL);
334 assert_status(status == 0, status, "mutex_init"); 305 assert_status(status == 0, status, "mutex_init");
335 } 306 }
336 } ; 307 };
337 308
338 #endif // OS_LINUX_VM_OS_LINUX_HPP 309 #endif // OS_LINUX_VM_OS_LINUX_HPP