factor/vm/profiler.cpp

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#include "master.hpp"
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namespace factor
{
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void factorvm::init_profiler()
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{
profiling_p = false;
}
/* Allocates memory */
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code_block *factorvm::compile_profiling_stub(cell word_)
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{
gc_root<word> word(word_,this);
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jit jit(WORD_TYPE,word.value(),this);
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jit.emit_with(userenv[JIT_PROFILING],word.value());
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return jit.to_code_block();
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}
/* Allocates memory */
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void factorvm::set_profiling(bool profiling)
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{
if(profiling == profiling_p)
return;
profiling_p = profiling;
/* Push everything to tenured space so that we can heap scan
and allocate profiling blocks if necessary */
gc();
gc_root<array> words(find_all_words(),this);
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cell i;
cell length = array_capacity(words.untagged());
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for(i = 0; i < length; i++)
{
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tagged<word> word(array_nth(words.untagged(),i));
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if(profiling)
word->counter = tag_fixnum(0);
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update_word_xt(word.value());
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}
/* Update XTs in code heap */
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iterate_code_heap(factor::relocate_code_block);
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}
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inline void factorvm::primitive_profiling()
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{
set_profiling(to_boolean(dpop()));
}
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PRIMITIVE(profiling)
{
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PRIMITIVE_GETVM()->primitive_profiling();
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}
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}