Mercurial > hg > graal-jvmci-8
comparison src/share/vm/runtime/os.hpp @ 8845:1b90c7607451
2178143: JVM crashes if the number of bound CPUs changed during runtime
Summary: Supply a new flag -XX:+AssumeMP to workaround the problem. With the flag is turned on, assume VM run on MP platform so is_MP() will return true that sync calls will not skip away.
Reviewed-by: dholmes, acorn, dcubed, jmasa
Contributed-by: yumin.qi@oracle.com
author | minqi |
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date | Wed, 27 Mar 2013 17:03:19 -0700 |
parents | 203f64878aab |
children | 0c039865ef2b |
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8839:b601102d00c8 | 8845:1b90c7607451 |
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178 static char* iso8601_time(char* buffer, size_t buffer_length); | 178 static char* iso8601_time(char* buffer, size_t buffer_length); |
179 | 179 |
180 // Interface for detecting multiprocessor system | 180 // Interface for detecting multiprocessor system |
181 static inline bool is_MP() { | 181 static inline bool is_MP() { |
182 assert(_processor_count > 0, "invalid processor count"); | 182 assert(_processor_count > 0, "invalid processor count"); |
183 return _processor_count > 1; | 183 return _processor_count > 1 || AssumeMP; |
184 } | 184 } |
185 static julong available_memory(); | 185 static julong available_memory(); |
186 static julong physical_memory(); | 186 static julong physical_memory(); |
187 static julong allocatable_physical_memory(julong size); | 187 static julong allocatable_physical_memory(julong size); |
188 static bool is_server_class_machine(); | 188 static bool is_server_class_machine(); |