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https://github.com/superseriousbusiness/gotosocial
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bump ncruces/go-sqlite3 to v0.21.0 (#3621)
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12
vendor/github.com/ncruces/go-sqlite3/vfs/shm_copy.go
generated
vendored
12
vendor/github.com/ncruces/go-sqlite3/vfs/shm_copy.go
generated
vendored
@ -1,4 +1,4 @@
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//go:build (windows && (386 || arm || amd64 || arm64 || riscv64 || ppc64le) && !sqlite3_nosys) || sqlite3_dotlk
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//go:build (windows && (386 || arm || amd64 || arm64 || riscv64 || ppc64le)) || sqlite3_dotlk
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package vfs
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@ -13,7 +13,7 @@ const (
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_WALINDEX_PGSZ = 32768
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)
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// This looks like a safe way of keeping the WAL-index in sync.
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// This seems a safe way of keeping the WAL-index in sync.
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//
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// The WAL-index file starts with a header,
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// and the index doesn't meaningfully change if the header doesn't change.
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@ -27,7 +27,7 @@ const (
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//
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// Since all the data is either redundant+checksummed,
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// 4 byte aligned, or modified under an exclusive lock,
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// the copies below should correctly keep copies in sync.
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// the copies below should correctly keep memory in sync.
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//
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// https://sqlite.org/walformat.html#the_wal_index_file_format
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@ -35,7 +35,7 @@ func (s *vfsShm) shmAcquire(ptr *_ErrorCode) {
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if ptr != nil && *ptr != _OK {
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return
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}
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if len(s.ptrs) == 0 || shmUnmodified(s.shadow[0][:], s.shared[0][:]) {
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if len(s.ptrs) == 0 || shmEqual(s.shadow[0][:], s.shared[0][:]) {
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return
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}
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// Copies modified words from shared to private memory.
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@ -53,7 +53,7 @@ func (s *vfsShm) shmAcquire(ptr *_ErrorCode) {
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}
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func (s *vfsShm) shmRelease() {
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if len(s.ptrs) == 0 || shmUnmodified(s.shadow[0][:], util.View(s.mod, s.ptrs[0], _WALINDEX_HDR_SIZE)) {
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if len(s.ptrs) == 0 || shmEqual(s.shadow[0][:], util.View(s.mod, s.ptrs[0], _WALINDEX_HDR_SIZE)) {
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return
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}
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// Copies modified words from private to shared memory.
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@ -82,6 +82,6 @@ func shmPage(s []byte) *[_WALINDEX_PGSZ / 4]uint32 {
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return (*[_WALINDEX_PGSZ / 4]uint32)(unsafe.Slice(p, _WALINDEX_PGSZ/4))
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}
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func shmUnmodified(v1, v2 []byte) bool {
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func shmEqual(v1, v2 []byte) bool {
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return *(*[_WALINDEX_HDR_SIZE]byte)(v1[:]) == *(*[_WALINDEX_HDR_SIZE]byte)(v2[:])
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}
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