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8059606: Enable per-method usage of CompileThresholdScaling (per-method compilation thresholds)

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Changed interpreter and compilation policies to allow using CompileThresholdScaling on a per-method level

Reviewed-by: jrose, kvn
This commit is contained in:
Zoltan Majo 2015-01-21 10:51:35 +01:00
parent 3d814126c2
commit e559c17954
32 changed files with 293 additions and 157 deletions
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2
hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp
View file

@ -53,7 +53,7 @@
/*
* USELABELS - If using GCC, then use labels for the opcode dispatching
* rather -then a switch statement. This improves performance because it
* gives us the oportunity to have the instructions that calculate the
* gives us the opportunity to have the instructions that calculate the
* next opcode to jump to be intermixed with the rest of the instructions
* that implement the opcode (see UPDATE_PC_AND_TOS_AND_CONTINUE macro).
*/

4
hotspot/src/share/vm/interpreter/invocationCounter.hpp
View file

@ -36,7 +36,7 @@
// Implementation notes: For space reasons, state & counter are both encoded in one word,
// The state is encoded using some of the least significant bits, the counter is using the
// more significant bits. The counter is incremented before a method is activated and an
// action is triggered when when count() > limit().
// action is triggered when count() > limit().
class InvocationCounter VALUE_OBJ_CLASS_SPEC {
friend class VMStructs;
@ -48,7 +48,6 @@ class InvocationCounter VALUE_OBJ_CLASS_SPEC {
number_of_state_bits = 2,
number_of_carry_bits = 1,
number_of_noncount_bits = number_of_state_bits + number_of_carry_bits,
number_of_count_bits = BitsPerInt - number_of_noncount_bits,
state_limit = nth_bit(number_of_state_bits),
count_grain = nth_bit(number_of_state_bits + number_of_carry_bits),
carry_mask = right_n_bits(number_of_carry_bits) << number_of_state_bits,
@ -68,6 +67,7 @@ class InvocationCounter VALUE_OBJ_CLASS_SPEC {
count_increment = count_grain, // use this value to increment the 32bit _counter word
count_mask_value = count_mask, // use this value to mask the backedge counter
count_shift = number_of_noncount_bits,
number_of_count_bits = BitsPerInt - number_of_noncount_bits,
count_limit = nth_bit(number_of_count_bits - 1)
};