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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use crate::{sys, SBAddress, SBThread};
use std::ffi::CString;
/// A work item enqueued on a libdispatch aka Grand Central
/// Dispatch (GCD) queue.
///
/// Most often, this will be a function or block.
///
/// "enqueued" here means that the work item has been added to a queue
/// but it has not yet started executing. When it is "dequeued",
/// execution of the item begins.
pub struct SBQueueItem {
/// The underlying raw `SBQueueItemRef`.
pub raw: sys::SBQueueItemRef,
}
impl SBQueueItem {
/// Construct a new `SBQueueItem`.
pub(crate) fn wrap(raw: sys::SBQueueItemRef) -> SBQueueItem {
SBQueueItem { raw }
}
/// Construct a new `Some(SBQueueItem)` or `None`.
#[allow(dead_code)]
pub(crate) fn maybe_wrap(raw: sys::SBQueueItemRef) -> Option<SBQueueItem> {
if unsafe { sys::SBQueueItemIsValid(raw) } {
Some(SBQueueItem { raw })
} else {
None
}
}
/// Check whether or not this is a valid `SBQueueItem` value.
pub fn is_valid(&self) -> bool {
unsafe { sys::SBQueueItemIsValid(self.raw) }
}
/// The kind of this work item.
pub fn kind(&self) -> sys::QueueItemKind {
unsafe { sys::SBQueueItemGetKind(self.raw) }
}
/// The code address that will be executed when this work item
/// is executed.
///
/// Not all queue items will have an address associated with them.
/// `QueueItemKind::Function` and `QueueItemKind::Block` work items
/// should have an address.
pub fn address(&self) -> Option<SBAddress> {
SBAddress::maybe_wrap(unsafe { sys::SBQueueItemGetAddress(self.raw) })
}
/// Get an extended backtrace thread for this queue item, if available
///
/// If the backtrace/thread information was collected when this item
/// was enqueued, this call will provide it.
///
/// The `thread_type` will typically be one of `"libdispatch"` or
/// `"pthread"`.
pub fn extended_backtrace_thread(&self, thread_type: &str) -> Option<SBThread> {
let thread_type = CString::new(thread_type).unwrap();
SBThread::maybe_wrap(unsafe {
sys::SBQueueItemGetExtendedBacktraceThread(self.raw, thread_type.as_ptr())
})
}
}
impl Clone for SBQueueItem {
fn clone(&self) -> SBQueueItem {
SBQueueItem {
raw: unsafe { sys::CloneSBQueueItem(self.raw) },
}
}
}
impl Drop for SBQueueItem {
fn drop(&mut self) {
unsafe { sys::DisposeSBQueueItem(self.raw) };
}
}
unsafe impl Send for SBQueueItem {}
unsafe impl Sync for SBQueueItem {}
#[cfg(feature = "graphql")]
#[juniper::graphql_object]
impl SBQueueItem {
fn address() -> Option<SBAddress> {
self.address()
}
}