diff options
Diffstat (limited to 'mjit.h')
| -rw-r--r-- | mjit.h | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/mjit.h b/mjit.h deleted file mode 100644 index e89a2b9a6f..0000000000 --- a/mjit.h +++ /dev/null @@ -1,175 +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" -#include "debug_counter.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; -}; - -// State of optimization switches -struct rb_mjit_compile_info { - // Disable getinstancevariable/setinstancevariable optimizations based on inline cache - bool disable_ivar_cache; - // Disable send/opt_send_without_block optimizations based on inline cache - bool disable_send_cache; - // Disable method inlining - bool disable_inlining; -}; - -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_iseq(const rb_iseq_t *iseq); -RUBY_SYMBOL_EXPORT_END - -extern bool mjit_compile(FILE *f, const rb_iseq_t *iseq, const char *funcname); -extern void mjit_init(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_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; - RB_DEBUG_COUNTER_INC(mjit_exec); - - 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)) { -# ifdef MJIT_HEADER - RB_DEBUG_COUNTER_INC(mjit_frame_JT2VM); -# else - RB_DEBUG_COUNTER_INC(mjit_frame_VM2VM); -# endif - switch ((enum rb_mjit_iseq_func)func) { - case NOT_ADDED_JIT_ISEQ_FUNC: - RB_DEBUG_COUNTER_INC(mjit_exec_not_added); - if (total_calls == mjit_opts.min_calls && mjit_target_iseq_p(body)) { - RB_DEBUG_COUNTER_INC(mjit_exec_not_added_add_iseq); - rb_mjit_add_iseq_to_process(iseq); - if (UNLIKELY(mjit_opts.wait)) { - return rb_mjit_wait_call(ec, body); - } - } - return Qundef; - case NOT_READY_JIT_ISEQ_FUNC: - RB_DEBUG_COUNTER_INC(mjit_exec_not_ready); - return Qundef; - case NOT_COMPILED_JIT_ISEQ_FUNC: - RB_DEBUG_COUNTER_INC(mjit_exec_not_compiled); - return Qundef; - default: // to avoid warning with LAST_JIT_ISEQ_FUNC - break; - } - } - -# 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); - -#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_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 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 |