bump ncruces/go-sqlite3 to v0.21.0 (#3621)

1 files changed, 0 insertions, 87 deletions

diff --git a/vendor/github.com/ncruces/go-sqlite3/internal/util/mmap.go b/vendor/github.com/ncruces/go-sqlite3/internal/util/mmap.go
deleted file mode 100644
index 613bb90b1..000000000
--- a/vendor/github.com/ncruces/go-sqlite3/internal/util/mmap.go
+++ /dev/null
@@ -1,87 +0,0 @@
-//go:build unix && !sqlite3_nosys
-
-package util
-
-import (
-	"context"
-	"os"
-	"unsafe"
-
-	"github.com/tetratelabs/wazero/api"
-	"golang.org/x/sys/unix"
-)
-
-type mmapState struct {
-	regions []*MappedRegion
-}
-
-func (s *mmapState) new(ctx context.Context, mod api.Module, size int32) *MappedRegion {
-	// Find unused region.
-	for _, r := range s.regions {
-		if !r.used && r.size == size {
-			return r
-		}
-	}
-
-	// Allocate page aligned memmory.
-	alloc := mod.ExportedFunction("aligned_alloc")
-	stack := [...]uint64{
-		uint64(unix.Getpagesize()),
-		uint64(size),
-	}
-	if err := alloc.CallWithStack(ctx, stack[:]); err != nil {
-		panic(err)
-	}
-	if stack[0] == 0 {
-		panic(OOMErr)
-	}
-
-	// Save the newly allocated region.
-	ptr := uint32(stack[0])
-	buf := View(mod, ptr, uint64(size))
-	addr := unsafe.Pointer(&buf[0])
-	s.regions = append(s.regions, &MappedRegion{
-		Ptr:  ptr,
-		addr: addr,
-		size: size,
-	})
-	return s.regions[len(s.regions)-1]
-}
-
-type MappedRegion struct {
-	addr unsafe.Pointer
-	Ptr  uint32
-	size int32
-	used bool
-}
-
-func MapRegion(ctx context.Context, mod api.Module, f *os.File, offset int64, size int32, readOnly bool) (*MappedRegion, error) {
-	s := ctx.Value(moduleKey{}).(*moduleState)
-	r := s.new(ctx, mod, size)
-	err := r.mmap(f, offset, readOnly)
-	if err != nil {
-		return nil, err
-	}
-	return r, nil
-}
-
-func (r *MappedRegion) Unmap() error {
-	// We can't munmap the region, otherwise it could be remaped.
-	// Instead, convert it to a protected, private, anonymous mapping.
-	// If successful, it can be reused for a subsequent mmap.
-	_, err := unix.MmapPtr(-1, 0, r.addr, uintptr(r.size),
-		unix.PROT_NONE, unix.MAP_PRIVATE|unix.MAP_FIXED|unix.MAP_ANON)
-	r.used = err != nil
-	return err
-}
-
-func (r *MappedRegion) mmap(f *os.File, offset int64, readOnly bool) error {
-	prot := unix.PROT_READ
-	if !readOnly {
-		prot |= unix.PROT_WRITE
-	}
-	_, err := unix.MmapPtr(int(f.Fd()), offset, r.addr, uintptr(r.size),
-		prot, unix.MAP_SHARED|unix.MAP_FIXED)
-	r.used = err == nil
-	return err
-}