Reviewers: Michael Starzinger,
Description:
Add flag to set minimum semi-space size.
BUG=
Please review this at https://codereview.chromium.org/279513003/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+13, -0 lines):
M src/flag-definitions.h
M src/heap.cc
Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index
30cbcd7bc60fbf6f2f08153fc46b093fb903b7a9..e197a87c1af677ee69291589fda5720a642c8e43
100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -466,6 +466,9 @@ DEFINE_bool(always_inline_smi_code, false,
DEFINE_int(max_new_space_size, 0,
"max size of the new space consisting of two semi-spaces which are
half"
"the size (in MBytes)")
+DEFINE_int(min_semispace_size, 0,
+ "min size of a semi-space (in MBytes), the new space consists of two"
+ "semi-spaces")
DEFINE_int(max_old_space_size, 0, "max size of the old space (in Mbytes)")
DEFINE_int(max_executable_size, 0, "max size of executable memory (in
Mbytes)")
DEFINE_bool(gc_global, false, "always perform global GCs")
Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index
13771e613e5dc61cc6ef1163bcecf880e39c7be9..2c158fda825213c3cda515bbf21492358255ccda
100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -5046,6 +5046,16 @@ bool Heap::ConfigureHeap(int max_semispace_size,
// for containment.
max_semispace_size_ = RoundUpToPowerOf2(max_semispace_size_);
reserved_semispace_size_ = RoundUpToPowerOf2(reserved_semispace_size_);
+
+ if (FLAG_min_semispace_size > 0) {
+ int initial_semispace_size = FLAG_min_semispace_size * MB;
+ if (initial_semispace_size > max_semispace_size_) {
+ initial_semispace_size_ = max_semispace_size_;
+ } else {
+ initial_semispace_size_ = initial_semispace_size;
+ }
+ }
+
initial_semispace_size_ = Min(initial_semispace_size_,
max_semispace_size_);
// The external allocation limit should be below 256 MB on all
architectures
--
--
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