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authorEuAndreh <eu@euandre.org>2024-08-12 15:42:56 -0300
committerEuAndreh <eu@euandre.org>2024-08-12 15:52:16 -0300
commit6bbc33b9e998af7ee45cca86e1290474603dff48 (patch)
tree5d0aff47783bc20dcf3f7862afdba0445e4c2fae /sqlite3_opt_unlock_notify.go
parentAdd Makefile and build skeleton (diff)
downloadgolite-6bbc33b9e998af7ee45cca86e1290474603dff48.tar.gz
golite-6bbc33b9e998af7ee45cca86e1290474603dff48.tar.xz
Build with "go tool" and hackishly bundle code from same package into one file each
Diffstat (limited to 'sqlite3_opt_unlock_notify.go')
-rw-r--r--sqlite3_opt_unlock_notify.go93
1 files changed, 0 insertions, 93 deletions
diff --git a/sqlite3_opt_unlock_notify.go b/sqlite3_opt_unlock_notify.go
deleted file mode 100644
index 76f7bbf..0000000
--- a/sqlite3_opt_unlock_notify.go
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright (C) 2019 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
-//
-// Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-//go:build cgo && sqlite_unlock_notify
-// +build cgo,sqlite_unlock_notify
-
-package sqlite3
-
-/*
-#cgo CFLAGS: -DSQLITE_ENABLE_UNLOCK_NOTIFY
-
-#include <stdlib.h>
-#include "sqlite3-binding.h"
-
-extern void unlock_notify_callback(void *arg, int argc);
-*/
-import "C"
-import (
- "fmt"
- "math"
- "sync"
- "unsafe"
-)
-
-type unlock_notify_table struct {
- sync.Mutex
- seqnum uint
- table map[uint]chan struct{}
-}
-
-var unt unlock_notify_table = unlock_notify_table{table: make(map[uint]chan struct{})}
-
-func (t *unlock_notify_table) add(c chan struct{}) uint {
- t.Lock()
- defer t.Unlock()
- h := t.seqnum
- t.table[h] = c
- t.seqnum++
- return h
-}
-
-func (t *unlock_notify_table) remove(h uint) {
- t.Lock()
- defer t.Unlock()
- delete(t.table, h)
-}
-
-func (t *unlock_notify_table) get(h uint) chan struct{} {
- t.Lock()
- defer t.Unlock()
- c, ok := t.table[h]
- if !ok {
- panic(fmt.Sprintf("Non-existent key for unlcok-notify channel: %d", h))
- }
- return c
-}
-
-//export unlock_notify_callback
-func unlock_notify_callback(argv unsafe.Pointer, argc C.int) {
- for i := 0; i < int(argc); i++ {
- parg := ((*(*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.uint)(nil))]*[1]uint)(argv))[i])
- arg := *parg
- h := arg[0]
- c := unt.get(h)
- c <- struct{}{}
- }
-}
-
-//export unlock_notify_wait
-func unlock_notify_wait(db *C.sqlite3) C.int {
- // It has to be a bufferred channel to not block in sqlite_unlock_notify
- // as sqlite_unlock_notify could invoke the callback before it returns.
- c := make(chan struct{}, 1)
- defer close(c)
-
- h := unt.add(c)
- defer unt.remove(h)
-
- pargv := C.malloc(C.sizeof_uint)
- defer C.free(pargv)
-
- argv := (*[1]uint)(pargv)
- argv[0] = h
- if rv := C.sqlite3_unlock_notify(db, (*[0]byte)(C.unlock_notify_callback), unsafe.Pointer(pargv)); rv != C.SQLITE_OK {
- return rv
- }
-
- <-c
-
- return C.SQLITE_OK
-}