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comparison src/share/vm/runtime/os.cpp @ 6766:a7509aff1b06

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7194254: jstack reports wrong thread priorities Reviewed-by: dholmes, sla, fparain Contributed-by: Dmytro Sheyko <dmytro_sheyko@hotmail.com>
author dholmes
date Mon, 17 Sep 2012 07:36:31 -0400
parents da91efe96a93
children 85f1cded9793
comparison
equal deleted inserted replaced
6749:a6fe94b9759f 6766:a7509aff1b06
199 assert(false, "Should not happen"); 199 assert(false, "Should not happen");
200 return OS_ERR; 200 return OS_ERR;
201 } 201 }
202 } 202 }
203 203
204 204 // The mapping from OS priority back to Java priority may be inexact because
205 // Java priorities can map M:1 with native priorities. If you want the definite
206 // Java priority then use JavaThread::java_priority()
205 OSReturn os::get_priority(const Thread* const thread, ThreadPriority& priority) { 207 OSReturn os::get_priority(const Thread* const thread, ThreadPriority& priority) {
206 int p; 208 int p;
207 int os_prio; 209 int os_prio;
208 OSReturn ret = get_native_priority(thread, &os_prio); 210 OSReturn ret = get_native_priority(thread, &os_prio);
209 if (ret != OS_OK) return ret; 211 if (ret != OS_OK) return ret;
210 212
211 for (p = MaxPriority; p > MinPriority && java_to_os_priority[p] > os_prio; p--) ; 213 if (java_to_os_priority[MaxPriority] > java_to_os_priority[MinPriority]) {
214 for (p = MaxPriority; p > MinPriority && java_to_os_priority[p] > os_prio; p--) ;
215 } else {
216 // niceness values are in reverse order
217 for (p = MaxPriority; p > MinPriority && java_to_os_priority[p] < os_prio; p--) ;
218 }
212 priority = (ThreadPriority)p; 219 priority = (ThreadPriority)p;
213 return OS_OK; 220 return OS_OK;
214 } 221 }
215 222
216 223