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Add flag to set minimum semi-space size.

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BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/279513003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21220 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
hpayer@chromium.org 2014-05-09 12:37:11 +00:00
parent 2c3ba95841
commit e82b4cdc40
2 changed files with 18 additions and 1 deletions
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3
src/flag-definitions.h
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@ -463,6 +463,9 @@ DEFINE_bool(always_inline_smi_code, false,
"always inline smi code in non-opt code") "always inline smi code in non-opt code")
// heap.cc // heap.cc
DEFINE_int(min_semi_space_size, 0,
"min size of a semi-space (in MBytes), the new space consists of two"
"semi-spaces")
DEFINE_int(max_semi_space_size, 0, DEFINE_int(max_semi_space_size, 0,
"max size of a semi-space (in MBytes), the new space consists of two" "max size of a semi-space (in MBytes), the new space consists of two"
"semi-spaces") "semi-spaces")

16
src/heap.cc
View File

@ -5018,7 +5018,7 @@ bool Heap::ConfigureHeap(int max_semi_space_size,
if (max_semi_space_size_ > reserved_semispace_size_) { if (max_semi_space_size_ > reserved_semispace_size_) {
max_semi_space_size_ = reserved_semispace_size_; max_semi_space_size_ = reserved_semispace_size_;
if (FLAG_trace_gc) { if (FLAG_trace_gc) {
PrintPID("Max semispace size cannot be more than %dkbytes\n", PrintPID("Max semi-space size cannot be more than %d kbytes\n",
reserved_semispace_size_ >> 10); reserved_semispace_size_ >> 10);
} }
} }
@ -5038,6 +5038,20 @@ bool Heap::ConfigureHeap(int max_semi_space_size,
// for containment. // for containment.
max_semi_space_size_ = RoundUpToPowerOf2(max_semi_space_size_); max_semi_space_size_ = RoundUpToPowerOf2(max_semi_space_size_);
reserved_semispace_size_ = RoundUpToPowerOf2(reserved_semispace_size_); reserved_semispace_size_ = RoundUpToPowerOf2(reserved_semispace_size_);
if (FLAG_min_semi_space_size > 0) {
int initial_semispace_size = FLAG_min_semi_space_size * MB;
if (initial_semispace_size > max_semi_space_size_) {
initial_semispace_size_ = max_semi_space_size_;
if (FLAG_trace_gc) {
PrintPID("Min semi-space size cannot be more than the maximum"
"semi-space size of %d MB\n", max_semi_space_size_);
}
} else {
initial_semispace_size_ = initial_semispace_size;
}
}
initial_semispace_size_ = Min(initial_semispace_size_, max_semi_space_size_); initial_semispace_size_ = Min(initial_semispace_size_, max_semi_space_size_);
// The external allocation limit should be below 256 MB on all architectures // The external allocation limit should be below 256 MB on all architectures