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Diffstat (limited to 'mjit.h')
| -rw-r--r-- | mjit.h | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/mjit.h b/mjit.h deleted file mode 100644 index 325fe555a7..0000000000 --- a/mjit.h +++ /dev/null @@ -1,146 +0,0 @@ -/********************************************************************** - - mjit.h - Interface to MRI method JIT compiler for Ruby's main thread - - Copyright (C) 2017 Vladimir Makarov <vmakarov@redhat.com>. - -**********************************************************************/ - -#ifndef RUBY_MJIT_H -#define RUBY_MJIT_H 1 - -#include "ruby.h" - -#if USE_MJIT - -/* Special address values of a function generated from the - corresponding iseq by MJIT: */ -enum rb_mjit_iseq_func { - /* ISEQ was not queued yet for the machine code generation */ - NOT_ADDED_JIT_ISEQ_FUNC = 0, - /* ISEQ is already queued for the machine code generation but the - code is not ready yet for the execution */ - NOT_READY_JIT_ISEQ_FUNC = 1, - /* ISEQ included not compilable insn, some internal assertion failed - or the unit is unloaded */ - NOT_COMPILED_JIT_ISEQ_FUNC = 2, - /* End mark */ - LAST_JIT_ISEQ_FUNC = 3 -}; - -/* MJIT options which can be defined on the MRI command line. */ -struct mjit_options { - /* Converted from "jit" feature flag to tell the enablement - information to ruby_show_version(). */ - char on; - /* Save temporary files after MRI finish. The temporary files - include the pre-compiled header, C code file generated for ISEQ, - and the corresponding object file. */ - char save_temps; - /* Print MJIT warnings to stderr. */ - char warnings; - /* Disable compiler optimization and add debug symbols. It can be - very slow. */ - char debug; - /* If not 0, all ISeqs are synchronously compiled. For testing. */ - unsigned int wait; - /* Number of calls to trigger JIT compilation. For testing. */ - unsigned int min_calls; - /* Force printing info about MJIT work of level VERBOSE or - less. 0=silence, 1=medium, 2=verbose. */ - int verbose; - /* Maximal permitted number of iseq JIT codes in a MJIT memory - cache. */ - int max_cache_size; -}; - -typedef VALUE (*mjit_func_t)(rb_execution_context_t *, rb_control_frame_t *); - -RUBY_SYMBOL_EXPORT_BEGIN -RUBY_EXTERN struct mjit_options mjit_opts; -RUBY_EXTERN int mjit_call_p; - -extern void mjit_add_iseq_to_process(const rb_iseq_t *iseq); -extern VALUE mjit_wait_call(rb_execution_context_t *ec, struct rb_iseq_constant_body *body); -RUBY_SYMBOL_EXPORT_END - -extern int mjit_compile(FILE *f, const struct rb_iseq_constant_body *body, const char *funcname, struct rb_call_cache *cc_entries, union iseq_inline_storage_entry *is_entries); -extern void mjit_init(struct mjit_options *opts); -extern void mjit_finish(void); -extern void mjit_gc_start_hook(void); -extern void mjit_gc_finish_hook(void); -extern void mjit_free_iseq(const rb_iseq_t *iseq); -extern void mjit_mark(void); -extern struct mjit_cont *mjit_cont_new(rb_execution_context_t *ec); -extern void mjit_cont_free(struct mjit_cont *cont); -extern void mjit_add_class_serial(rb_serial_t class_serial); -extern void mjit_remove_class_serial(rb_serial_t class_serial); - -/* A threshold used to reject long iseqs from JITting as such iseqs - takes too much time to be compiled. */ -#define JIT_ISEQ_SIZE_THRESHOLD 1000 - -/* Return TRUE if given ISeq body should be compiled by MJIT */ -static inline int -mjit_target_iseq_p(struct rb_iseq_constant_body *body) -{ - return (body->type == ISEQ_TYPE_METHOD || body->type == ISEQ_TYPE_BLOCK) - && body->iseq_size < JIT_ISEQ_SIZE_THRESHOLD; -} - -/* Try to execute the current iseq in ec. Use JIT code if it is ready. - If it is not, add ISEQ to the compilation queue and return Qundef. */ -static inline VALUE -mjit_exec(rb_execution_context_t *ec) -{ - const rb_iseq_t *iseq; - struct rb_iseq_constant_body *body; - long unsigned total_calls; - mjit_func_t func; - - if (!mjit_call_p) - return Qundef; - - iseq = ec->cfp->iseq; - body = iseq->body; - total_calls = ++body->total_calls; - - func = body->jit_func; - if (UNLIKELY((uintptr_t)func <= (uintptr_t)LAST_JIT_ISEQ_FUNC)) { - switch ((enum rb_mjit_iseq_func)func) { - case NOT_ADDED_JIT_ISEQ_FUNC: - if (total_calls == mjit_opts.min_calls && mjit_target_iseq_p(body)) { - mjit_add_iseq_to_process(iseq); - if (UNLIKELY(mjit_opts.wait)) { - return mjit_wait_call(ec, body); - } - } - return Qundef; - case NOT_READY_JIT_ISEQ_FUNC: - case NOT_COMPILED_JIT_ISEQ_FUNC: - return Qundef; - default: /* to avoid warning with LAST_JIT_ISEQ_FUNC */ - break; - } - } - - return func(ec, ec->cfp); -} - -void mjit_child_after_fork(void); - -#else /* USE_MJIT */ -static inline struct mjit_cont *mjit_cont_new(rb_execution_context_t *ec){return NULL;} -static inline void mjit_cont_free(struct mjit_cont *cont){} -static inline void mjit_finish(void){} -static inline void mjit_gc_start_hook(void){} -static inline void mjit_gc_finish_hook(void){} -static inline void mjit_free_iseq(const rb_iseq_t *iseq){} -static inline void mjit_mark(void){} -static inline void mjit_add_class_serial(rb_serial_t class_serial){} -static inline void mjit_remove_class_serial(rb_serial_t class_serial){} -static inline VALUE mjit_exec(rb_execution_context_t *ec) { return Qundef; /* unreachable */ } -static inline void mjit_child_after_fork(void){} - -#endif /* USE_MJIT */ -#endif /* RUBY_MJIT_H */ |