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WIP: Unlock Notification

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To do: unlock_notify_cb
This commit is contained in:
gwenn
2017-09-21 19:27:07 +02:00
parent 5d91fb088f
commit 455e7d4060
4 changed files with 104 additions and 52 deletions
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31
src/raw_statement.rs
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@@ -2,14 +2,15 @@ use std::ffi::CStr;
use std::ptr;
use std::os::raw::c_int;
use super::ffi;
use super::unlock_notify;
// Private newtype for raw sqlite3_stmts that finalize themselves when dropped.
#[derive(Debug)]
pub struct RawStatement(*mut ffi::sqlite3_stmt);
pub struct RawStatement(*mut ffi::sqlite3_stmt, *mut ffi::sqlite3);
impl RawStatement {
pub fn new(stmt: *mut ffi::sqlite3_stmt) -> RawStatement {
RawStatement(stmt)
pub fn new(stmt: *mut ffi::sqlite3_stmt, db: *mut ffi::sqlite3) -> RawStatement {
RawStatement(stmt, db)
}
pub unsafe fn ptr(&self) -> *mut ffi::sqlite3_stmt {
@@ -29,7 +30,29 @@ impl RawStatement {
}
pub fn step(&self) -> c_int {
unsafe { ffi::sqlite3_step(self.0) }
if cfg!(feature = "unlock_notify") {
let mut rc;
loop {
rc = unsafe { ffi::sqlite3_step(self.0) };
if rc == ffi::SQLITE_LOCKED {
if unsafe { ffi::sqlite3_extended_errcode(self.1) } !=
ffi::SQLITE_LOCKED_SHAREDCACHE
{
break;
}
} else if rc != ffi::SQLITE_LOCKED_SHAREDCACHE {
break;
}
rc = unlock_notify::wait_for_unlock_notify(self.1);
if rc != ffi::SQLITE_OK {
break;
}
self.reset();
}
rc
} else {
unsafe { ffi::sqlite3_step(self.0) }
}
}
pub fn reset(&self) -> c_int {