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authorLibravatar Daenney <daenney@users.noreply.github.com>2024-06-07 15:06:43 +0200
committerLibravatar GitHub <noreply@github.com>2024-06-07 15:06:43 +0200
commitcc4f773b0e0f45cdb28727853b9d253234a93b56 (patch)
tree455224a7cb489909906eda5778d0e700867358d4 /vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go
parent[feature] Implement filters_changed stream event (#2972) (diff)
downloadgotosocial-cc4f773b0e0f45cdb28727853b9d253234a93b56.tar.xz
[chore] Update WASM go-sqlite3 to v0.16.1 (#2976)
This includes support for journal mode set to WAL on the BSDs. Relates to: #1753, #2962
Diffstat (limited to 'vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go')
-rw-r--r--vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go76
1 files changed, 0 insertions, 76 deletions
diff --git a/vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go b/vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go
deleted file mode 100644
index 8936173b4..000000000
--- a/vendor/github.com/ncruces/go-sqlite3/internal/util/alloc_windows.go
+++ /dev/null
@@ -1,76 +0,0 @@
-//go:build !sqlite3_nosys
-
-package util
-
-import (
- "math"
- "reflect"
- "unsafe"
-
- "github.com/tetratelabs/wazero/experimental"
- "golang.org/x/sys/windows"
-)
-
-func virtualAlloc(cap, max uint64) experimental.LinearMemory {
- // Round up to the page size.
- rnd := uint64(windows.Getpagesize() - 1)
- max = (max + rnd) &^ rnd
-
- if max > math.MaxInt {
- // This ensures uintptr(max) overflows to a large value,
- // and windows.VirtualAlloc returns an error.
- max = math.MaxUint64
- }
-
- // Reserve max bytes of address space, to ensure we won't need to move it.
- // This does not commit memory.
- r, err := windows.VirtualAlloc(0, uintptr(max), windows.MEM_RESERVE, windows.PAGE_READWRITE)
- if err != nil {
- panic(err)
- }
-
- mem := virtualMemory{addr: r}
- // SliceHeader, although deprecated, avoids a go vet warning.
- sh := (*reflect.SliceHeader)(unsafe.Pointer(&mem.buf))
- sh.Cap = int(max) // Not a bug.
- sh.Data = r
- return &mem
-}
-
-// The slice covers the entire mmapped memory:
-// - len(buf) is the already committed memory,
-// - cap(buf) is the reserved address space.
-type virtualMemory struct {
- buf []byte
- addr uintptr
-}
-
-func (m *virtualMemory) Reallocate(size uint64) []byte {
- com := uint64(len(m.buf))
- res := uint64(cap(m.buf))
- if com < size && size < res {
- // Round up to the page size.
- rnd := uint64(windows.Getpagesize() - 1)
- new := (size + rnd) &^ rnd
-
- // Commit additional memory up to new bytes.
- _, err := windows.VirtualAlloc(m.addr, uintptr(new), windows.MEM_COMMIT, windows.PAGE_READWRITE)
- if err != nil {
- panic(err)
- }
-
- // Update committed memory.
- m.buf = m.buf[:new]
- }
- // Limit returned capacity because bytes beyond
- // len(m.buf) have not yet been committed.
- return m.buf[:size:len(m.buf)]
-}
-
-func (m *virtualMemory) Free() {
- err := windows.VirtualFree(m.addr, 0, windows.MEM_RELEASE)
- if err != nil {
- panic(err)
- }
- m.addr = 0
-}