Mercurial > hg > graal-jvmci-8

comparison src/share/vm/gc_interface/collectedHeap.hpp @ 17727:cfd4aac53239

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8030177: G1: Enable TLAB resizing Reviewed-by: tschatzl, stefank, jmasa
author brutisso
date Mon, 27 Jan 2014 13:14:53 +0100
parents 85c1ca43713f
children 9428a0b94204
comparison
equal deleted inserted replaced
17726:085b304a1cc5 17727:cfd4aac53239
401 // Section on thread-local allocation buffers (TLABs) 401 // Section on thread-local allocation buffers (TLABs)
402 // If the heap supports thread-local allocation buffers, it should override 402 // If the heap supports thread-local allocation buffers, it should override
403 // the following methods: 403 // the following methods:
404 // Returns "true" iff the heap supports thread-local allocation buffers. 404 // Returns "true" iff the heap supports thread-local allocation buffers.
405 // The default is "no". 405 // The default is "no".
406 virtual bool supports_tlab_allocation() const { 406 virtual bool supports_tlab_allocation() const = 0;
407 return false; 407
408 }
409 // The amount of space available for thread-local allocation buffers. 408 // The amount of space available for thread-local allocation buffers.
410 virtual size_t tlab_capacity(Thread *thr) const { 409 virtual size_t tlab_capacity(Thread *thr) const = 0;
411 guarantee(false, "thread-local allocation buffers not supported"); 410
412 return 0; 411 // The amount of used space for thread-local allocation buffers for the given thread.
413 } 412 virtual size_t tlab_used(Thread *thr) const = 0;
413
414 virtual size_t max_tlab_size() const;
415
414 // An estimate of the maximum allocation that could be performed 416 // An estimate of the maximum allocation that could be performed
415 // for thread-local allocation buffers without triggering any 417 // for thread-local allocation buffers without triggering any
416 // collection or expansion activity. 418 // collection or expansion activity.
417 virtual size_t unsafe_max_tlab_alloc(Thread *thr) const { 419 virtual size_t unsafe_max_tlab_alloc(Thread *thr) const {
418 guarantee(false, "thread-local allocation buffers not supported"); 420 guarantee(false, "thread-local allocation buffers not supported");