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-#ifndef RUBY_MJIT_H
-#define RUBY_MJIT_H 1
-/**********************************************************************
-
- mjit.h - Interface to MRI method JIT compiler for Ruby's main thread
-
- Copyright (C) 2017 Vladimir Makarov <vmakarov@redhat.com>.
-
-**********************************************************************/
-
-#include "ruby/internal/config.h" // defines USE_MJIT
-#include "ruby/internal/stdbool.h"
-#include "vm_core.h"
-
-# if USE_MJIT
-
-#include "debug_counter.h"
-#include "ruby.h"
-
-// Special address values of a function generated from the
-// corresponding iseq by MJIT:
-enum rb_mjit_iseq_func {
- // ISEQ has never been enqueued to unit_queue yet
- 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;
- // Add arbitrary cflags.
- char* debug_flags;
- // 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;
-};
-
-// State of optimization switches
-struct rb_mjit_compile_info {
- // Disable getinstancevariable/setinstancevariable optimizations based on inline cache (T_OBJECT)
- bool disable_ivar_cache;
- // Disable getinstancevariable/setinstancevariable optimizations based on inline cache (FL_EXIVAR)
- bool disable_exivar_cache;
- // Disable send/opt_send_without_block optimizations based on inline cache
- bool disable_send_cache;
- // Disable method inlining
- bool disable_inlining;
- // Disable opt_getinlinecache inlining
- bool disable_const_cache;
-};
-
-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 bool mjit_call_p;
-
-extern void rb_mjit_add_iseq_to_process(const rb_iseq_t *iseq);
-extern VALUE rb_mjit_wait_call(rb_execution_context_t *ec, struct rb_iseq_constant_body *body);
-extern struct rb_mjit_compile_info* rb_mjit_iseq_compile_info(const struct rb_iseq_constant_body *body);
-extern void rb_mjit_recompile_send(const rb_iseq_t *iseq);
-extern void rb_mjit_recompile_ivar(const rb_iseq_t *iseq);
-extern void rb_mjit_recompile_exivar(const rb_iseq_t *iseq);
-extern void rb_mjit_recompile_inlining(const rb_iseq_t *iseq);
-extern void rb_mjit_recompile_const(const rb_iseq_t *iseq);
-RUBY_SYMBOL_EXPORT_END
-
-extern void mjit_cancel_all(const char *reason);
-extern bool mjit_compile(FILE *f, const rb_iseq_t *iseq, const char *funcname, int id);
-extern void mjit_init(const struct mjit_options *opts);
-extern void mjit_gc_start_hook(void);
-extern void mjit_gc_exit_hook(void);
-extern void mjit_free_iseq(const rb_iseq_t *iseq);
-extern void mjit_update_references(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_mark_cc_entries(const struct rb_iseq_constant_body *const body);
-
-# ifdef MJIT_HEADER
-NOINLINE(static COLDFUNC VALUE mjit_exec_slowpath(rb_execution_context_t *ec, const rb_iseq_t *iseq, struct rb_iseq_constant_body *body));
-# else
-static inline VALUE mjit_exec_slowpath(rb_execution_context_t *ec, const rb_iseq_t *iseq, struct rb_iseq_constant_body *body);
-# endif
-static VALUE
-mjit_exec_slowpath(rb_execution_context_t *ec, const rb_iseq_t *iseq, struct rb_iseq_constant_body *body)
-{
- uintptr_t func_i = (uintptr_t)(body->jit_func);
- ASSUME(func_i <= LAST_JIT_ISEQ_FUNC);
- switch ((enum rb_mjit_iseq_func)func_i) {
- case NOT_ADDED_JIT_ISEQ_FUNC:
- RB_DEBUG_COUNTER_INC(mjit_exec_not_added);
- if (body->total_calls == mjit_opts.min_calls) {
- rb_mjit_add_iseq_to_process(iseq);
- if (UNLIKELY(mjit_opts.wait)) {
- return rb_mjit_wait_call(ec, body);
- }
- }
- break;
- case NOT_READY_JIT_ISEQ_FUNC:
- RB_DEBUG_COUNTER_INC(mjit_exec_not_ready);
- break;
- case NOT_COMPILED_JIT_ISEQ_FUNC:
- RB_DEBUG_COUNTER_INC(mjit_exec_not_compiled);
- break;
- default: // to avoid warning with LAST_JIT_ISEQ_FUNC
- break;
- }
- return Qundef;
-}
-
-// 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;
-
- if (!mjit_call_p)
- return Qundef;
- RB_DEBUG_COUNTER_INC(mjit_exec);
-
- iseq = ec->cfp->iseq;
- body = iseq->body;
- body->total_calls++;
-
- mjit_func_t func = body->jit_func;
- if (UNLIKELY((uintptr_t)func <= LAST_JIT_ISEQ_FUNC)) {
-# ifdef MJIT_HEADER
- RB_DEBUG_COUNTER_INC(mjit_frame_JT2VM);
-# else
- RB_DEBUG_COUNTER_INC(mjit_frame_VM2VM);
-# endif
- return mjit_exec_slowpath(ec, iseq, body);
- }
-
-# ifdef MJIT_HEADER
- RB_DEBUG_COUNTER_INC(mjit_frame_JT2JT);
-# else
- RB_DEBUG_COUNTER_INC(mjit_frame_VM2JT);
-# endif
- RB_DEBUG_COUNTER_INC(mjit_exec_call_func);
- return func(ec, ec->cfp);
-}
-
-void mjit_child_after_fork(void);
-
-# ifdef MJIT_HEADER
-#define mjit_enabled true
-# else // MJIT_HEADER
-extern bool mjit_enabled;
-# endif // MJIT_HEADER
-VALUE mjit_pause(bool wait_p);
-VALUE mjit_resume(void);
-void mjit_finish(bool close_handle_p);
-
-# else // USE_MJIT
-
-static inline void mjit_cancel_all(const char *reason){}
-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_gc_start_hook(void){}
-static inline void mjit_gc_exit_hook(void){}
-static inline void mjit_free_iseq(const rb_iseq_t *iseq){}
-static inline void mjit_mark(void){}
-static inline VALUE mjit_exec(rb_execution_context_t *ec) { return Qundef; /* unreachable */ }
-static inline void mjit_child_after_fork(void){}
-
-#define mjit_enabled false
-static inline VALUE mjit_pause(bool wait_p){ return Qnil; } // unreachable
-static inline VALUE mjit_resume(void){ return Qnil; } // unreachable
-static inline void mjit_finish(bool close_handle_p){}
-
-# endif // USE_MJIT
-#endif // RUBY_MJIT_H
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 13:16:24 +0000