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comparison src/share/vm/opto/runtime.hpp @ 1166:7b0e9cba0307

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6896647: card marks can be deferred too long Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future. Reviewed-by: never, johnc
author ysr
date Wed, 13 Jan 2010 15:26:39 -0800
parents 39b01ab7035a
children c18cbe5936b8
comparison
equal deleted inserted replaced
1165:2dd52dea6d28 1166:7b0e9cba0307
131 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread); 131 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
132 132
133 // Allocate storage for a objArray or typeArray 133 // Allocate storage for a objArray or typeArray
134 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread); 134 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
135 135
136 // Post-slow-path-allocation step for implementing ReduceInitialCardMarks: 136 // Post-slow-path-allocation, pre-initializing-stores step for
137 static void maybe_defer_card_mark(JavaThread* thread); 137 // implementing ReduceInitialCardMarks
138 static void new_store_pre_barrier(JavaThread* thread);
138 139
139 // Allocate storage for a multi-dimensional arrays 140 // Allocate storage for a multi-dimensional arrays
140 // Note: needs to be fixed for arbitrary number of dimensions 141 // Note: needs to be fixed for arbitrary number of dimensions
141 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread); 142 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
142 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread); 143 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);