debug_go116.go raw

   1  // +build go1.17,!go1.17
   2  
   3  /*
   4   * Copyright 2021 ByteDance Inc.
   5   *
   6   * Licensed under the Apache License, Version 2.0 (the "License");
   7   * you may not use this file except in compliance with the License.
   8   * You may obtain a copy of the License at
   9   *
  10   *     http://www.apache.org/licenses/LICENSE-2.0
  11   *
  12   * Unless required by applicable law or agreed to in writing, software
  13   * distributed under the License is distributed on an "AS IS" BASIS,
  14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15   * See the License for the specific language governing permissions and
  16   * limitations under the License.
  17   */
  18  
  19  package x86
  20  
  21  import (
  22      `os`
  23      `strings`
  24      `runtime`
  25      `runtime/debug`
  26  
  27      `github.com/bytedance/sonic/internal/jit`
  28  )
  29  
  30  var (
  31      debugSyncGC  = os.Getenv("SONIC_SYNC_GC") != ""
  32      debugAsyncGC = os.Getenv("SONIC_NO_ASYNC_GC") == ""
  33  )
  34  
  35  var (
  36      _Instr_End _Instr = newInsOp(_OP_null)
  37  
  38      _F_gc       = jit.Func(runtime.GC)
  39      _F_force_gc = jit.Func(debug.FreeOSMemory)
  40      _F_println  = jit.Func(println_wrapper)
  41  )
  42  
  43  func println_wrapper(i int, op1 int, op2 int){
  44      println(i, " Intrs ", op1, _OpNames[op1], "next: ", op2, _OpNames[op2])
  45  }
  46  
  47  func (self *_Assembler) force_gc() {
  48      self.call_go(_F_gc)
  49      self.call_go(_F_force_gc)
  50  }
  51  
  52  func (self *_Assembler) debug_instr(i int, v *_Instr) {
  53      if debugSyncGC {
  54          if (i+1 == len(self.p)) {
  55              self.print_gc(i, v, &_Instr_End) 
  56          } else {
  57              next := &(self.p[i+1])
  58              self.print_gc(i, v, next)
  59              name := _OpNames[next.op()]
  60              if strings.Contains(name, "save") {
  61                  return
  62              }
  63          }
  64          self.force_gc()
  65      }
  66  }
  67