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7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis

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Track allocated bytes in Thread's, update on TLAB retirement and direct allocation in Eden and tenured, add JNI methods for ThreadMXBean.

Reviewed-by: coleenp, kvn, dholmes, ysr
This commit is contained in:
Paul Hohensee 2011-01-07 10:42:32 -05:00
parent 6f2c2c3272
commit 7b0134a7cb
26 changed files with 447 additions and 212 deletions
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27
hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -3393,21 +3393,21 @@ void TemplateTable::_new() {
__ delayed()->st_ptr(RnewTopValue, G2_thread, in_bytes(JavaThread::tlab_top_offset()));
if (allow_shared_alloc) {
// Check if tlab should be discarded (refill_waste_limit >= free)
__ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()), RtlabWasteLimitValue);
__ sub(RendValue, RoldTopValue, RfreeValue);
// Check if tlab should be discarded (refill_waste_limit >= free)
__ ld_ptr(G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()), RtlabWasteLimitValue);
__ sub(RendValue, RoldTopValue, RfreeValue);
#ifdef _LP64
__ srlx(RfreeValue, LogHeapWordSize, RfreeValue);
__ srlx(RfreeValue, LogHeapWordSize, RfreeValue);
#else
__ srl(RfreeValue, LogHeapWordSize, RfreeValue);
__ srl(RfreeValue, LogHeapWordSize, RfreeValue);
#endif
__ cmp(RtlabWasteLimitValue, RfreeValue);
__ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, slow_case); // tlab waste is small
__ delayed()->nop();
__ cmp(RtlabWasteLimitValue, RfreeValue);
__ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, slow_case); // tlab waste is small
__ delayed()->nop();
// increment waste limit to prevent getting stuck on this slow path
__ add(RtlabWasteLimitValue, ThreadLocalAllocBuffer::refill_waste_limit_increment(), RtlabWasteLimitValue);
__ st_ptr(RtlabWasteLimitValue, G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()));
// increment waste limit to prevent getting stuck on this slow path
__ add(RtlabWasteLimitValue, ThreadLocalAllocBuffer::refill_waste_limit_increment(), RtlabWasteLimitValue);
__ st_ptr(RtlabWasteLimitValue, G2_thread, in_bytes(JavaThread::tlab_refill_waste_limit_offset()));
} else {
// No allocation in the shared eden.
__ br(Assembler::always, false, Assembler::pt, slow_case);
@ -3445,6 +3445,9 @@ void TemplateTable::_new() {
__ cmp(RoldTopValue, RnewTopValue);
__ brx(Assembler::notEqual, false, Assembler::pn, retry);
__ delayed()->nop();
// bump total bytes allocated by this thread
__ incr_allocated_bytes(Roffset, 0, G1_scratch);
}
if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {