Source file src/internal/coverage/rtcov/rtcov.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 rtcov 6 7 // This package contains types whose structure is shared between 8 // the runtime package and the "runtime/coverage" package. 9 10 // CovMetaBlob is a container for holding the meta-data symbol (an 11 // RODATA variable) for an instrumented Go package. Here "p" points to 12 // the symbol itself, "len" is the length of the sym in bytes, and 13 // "hash" is an md5sum for the sym computed by the compiler. When 14 // the init function for a coverage-instrumented package executes, it 15 // will make a call into the runtime which will create a covMetaBlob 16 // object for the package and chain it onto a global list. 17 type CovMetaBlob struct { 18 P *byte 19 Len uint32 20 Hash [16]byte 21 PkgPath string 22 PkgID int 23 CounterMode uint8 // coverage.CounterMode 24 CounterGranularity uint8 // coverage.CounterGranularity 25 } 26 27 // CovCounterBlob is a container for encapsulating a counter section 28 // (BSS variable) for an instrumented Go module. Here "counters" 29 // points to the counter payload and "len" is the number of uint32 30 // entries in the section. 31 type CovCounterBlob struct { 32 Counters *uint32 33 Len uint64 34 } 35