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af71ee55ef
We want to skip checking `mjit_opts.wait` for already JIT-ed case. Optcarrot is slightly improved like 65.20 fps -> 66.60 fps. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63480 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
126 lines
4.3 KiB
C
126 lines
4.3 KiB
C
/**********************************************************************
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mjit.h - Interface to MRI method JIT compiler
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Copyright (C) 2017 Vladimir Makarov <vmakarov@redhat.com>.
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**********************************************************************/
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#ifndef RUBY_MJIT_H
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#define RUBY_MJIT_H 1
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#include "ruby.h"
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/* Special address values of a function generated from the
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corresponding iseq by MJIT: */
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enum rb_mjit_iseq_func {
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/* ISEQ was not queued yet for the machine code generation */
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NOT_ADDED_JIT_ISEQ_FUNC = 0,
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/* ISEQ is already queued for the machine code generation but the
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code is not ready yet for the execution */
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NOT_READY_JIT_ISEQ_FUNC = 1,
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/* ISEQ included not compilable insn or some assertion failed */
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NOT_COMPILABLE_JIT_ISEQ_FUNC = 2,
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/* End mark */
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LAST_JIT_ISEQ_FUNC = 3
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};
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/* MJIT options which can be defined on the MRI command line. */
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struct mjit_options {
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char on; /* flag of MJIT usage */
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/* Save temporary files after MRI finish. The temporary files
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include the pre-compiled header, C code file generated for ISEQ,
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and the corresponding object file. */
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char save_temps;
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/* Print MJIT warnings to stderr. */
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char warnings;
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/* Disable compiler optimization and add debug symbols. It can be
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very slow. */
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char debug;
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/* If not 0, all ISeqs are synchronously compiled. For testing. */
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unsigned int wait;
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/* Number of calls to trigger JIT compilation. For testing. */
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unsigned int min_calls;
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/* Force printing info about MJIT work of level VERBOSE or
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less. 0=silence, 1=medium, 2=verbose. */
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int verbose;
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/* Maximal permitted number of iseq JIT codes in a MJIT memory
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cache. */
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int max_cache_size;
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};
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typedef VALUE (*mjit_func_t)(rb_execution_context_t *, rb_control_frame_t *);
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RUBY_SYMBOL_EXPORT_BEGIN
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extern struct mjit_options mjit_opts;
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extern int mjit_init_p;
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extern void mjit_add_iseq_to_process(const rb_iseq_t *iseq);
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extern mjit_func_t mjit_get_iseq_func(struct rb_iseq_constant_body *body);
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RUBY_SYMBOL_EXPORT_END
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extern int mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname);
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extern void mjit_init(struct mjit_options *opts);
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extern void mjit_finish(void);
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extern void mjit_gc_start_hook(void);
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extern void mjit_gc_finish_hook(void);
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extern void mjit_free_iseq(const rb_iseq_t *iseq);
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extern void mjit_mark(void);
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extern struct mjit_cont *mjit_cont_new(rb_execution_context_t *ec);
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extern void mjit_cont_free(struct mjit_cont *cont);
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extern void mjit_add_class_serial(rb_serial_t class_serial);
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extern void mjit_remove_class_serial(rb_serial_t class_serial);
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extern int mjit_valid_class_serial_p(rb_serial_t class_serial);
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/* A threshold used to reject long iseqs from JITting as such iseqs
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takes too much time to be compiled. */
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#define JIT_ISEQ_SIZE_THRESHOLD 1000
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/* Return TRUE if given ISeq body should be compiled by MJIT */
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static inline int
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mjit_target_iseq_p(struct rb_iseq_constant_body *body)
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{
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return (body->type == ISEQ_TYPE_METHOD || body->type == ISEQ_TYPE_BLOCK)
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&& body->iseq_size < JIT_ISEQ_SIZE_THRESHOLD;
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}
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/* Try to execute the current iseq in ec. Use JIT code if it is ready.
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If it is not, add ISEQ to the compilation queue and return Qundef. */
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static inline VALUE
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mjit_exec(rb_execution_context_t *ec)
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{
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const rb_iseq_t *iseq;
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struct rb_iseq_constant_body *body;
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long unsigned total_calls;
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mjit_func_t func;
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if (!mjit_init_p)
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return Qundef;
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iseq = ec->cfp->iseq;
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body = iseq->body;
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total_calls = ++body->total_calls;
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func = body->jit_func;
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if (UNLIKELY((ptrdiff_t)func <= (ptrdiff_t)LAST_JIT_ISEQ_FUNC)) {
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switch ((enum rb_mjit_iseq_func)func) {
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case NOT_ADDED_JIT_ISEQ_FUNC:
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if (total_calls == mjit_opts.min_calls && mjit_target_iseq_p(body)) {
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mjit_add_iseq_to_process(iseq);
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if (UNLIKELY(mjit_opts.wait)) {
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func = mjit_get_iseq_func(body);
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}
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}
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return Qundef;
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case NOT_READY_JIT_ISEQ_FUNC:
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case NOT_COMPILABLE_JIT_ISEQ_FUNC:
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return Qundef;
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default: /* to avoid warning with LAST_JIT_ISEQ_FUNC */
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break;
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}
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}
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return func(ec, ec->cfp);
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}
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#endif /* RUBY_MJIT_H */
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