covercounter.go

     1  // Copyright 2022 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package runtime
     6  
     7  import (
     8  	"internal/coverage/rtcov"
     9  	"unsafe"
    10  )
    11  
    12  //go:linkname runtime_coverage_getCovCounterList runtime/coverage.getCovCounterList
    13  func runtime_coverage_getCovCounterList() []rtcov.CovCounterBlob {
    14  	res := []rtcov.CovCounterBlob{}
    15  	u32sz := unsafe.Sizeof(uint32(0))
    16  	for datap := &firstmoduledata; datap != nil; datap = datap.next {
    17  		if datap.covctrs == datap.ecovctrs {
    18  			continue
    19  		}
    20  		res = append(res, rtcov.CovCounterBlob{
    21  			Counters: (*uint32)(unsafe.Pointer(datap.covctrs)),
    22  			Len:      uint64((datap.ecovctrs - datap.covctrs) / u32sz),
    23  		})
    24  	}
    25  	return res
    26  }
    27
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