Mercurial > hg > truffle
diff src/share/vm/runtime/safepoint.cpp @ 6162:e9140bf80b4a
7158800: Improve storage of symbol tables
Summary: Use an alternate version of hashing algorithm for symbol string tables and after a certain bucket size to improve performance
Reviewed-by: pbk, kamg, dlong, kvn, fparain
author | coleenp |
---|---|
date | Wed, 13 Jun 2012 19:52:59 -0400 |
parents | 541c4a5e7b88 |
children | d2a62e0f25eb |
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--- a/src/share/vm/runtime/safepoint.cpp Mon Jun 11 13:10:14 2012 -0400 +++ b/src/share/vm/runtime/safepoint.cpp Wed Jun 13 19:52:59 2012 -0400 @@ -23,6 +23,7 @@ */ #include "precompiled.hpp" +#include "classfile/symbolTable.hpp" #include "classfile/systemDictionary.hpp" #include "code/codeCache.hpp" #include "code/icBuffer.hpp" @@ -526,8 +527,20 @@ CompilationPolicy::policy()->do_safepoint_work(); } - TraceTime t4("sweeping nmethods", TraceSafepointCleanupTime); - NMethodSweeper::scan_stacks(); + { + TraceTime t4("sweeping nmethods", TraceSafepointCleanupTime); + NMethodSweeper::scan_stacks(); + } + + if (SymbolTable::needs_rehashing()) { + TraceTime t5("rehashing symbol table", TraceSafepointCleanupTime); + SymbolTable::rehash_table(); + } + + if (StringTable::needs_rehashing()) { + TraceTime t6("rehashing string table", TraceSafepointCleanupTime); + StringTable::rehash_table(); + } // rotate log files? if (UseGCLogFileRotation) {