gio/auto/
memory_monitor.rs

1// This file was generated by gir (https://github.com/gtk-rs/gir)
2// from gir-files (https://github.com/gtk-rs/gir-files)
3// DO NOT EDIT
4
5use crate::{Initable, MemoryMonitorWarningLevel, ffi};
6use glib::{
7    object::ObjectType as _,
8    prelude::*,
9    signal::{SignalHandlerId, connect_raw},
10    translate::*,
11};
12use std::boxed::Box as Box_;
13
14glib::wrapper! {
15    ///  G_MEMORY_MONITOR_WARNING_LEVEL_LOW)
16    ///     drop_caches ();
17    /// }
18    ///
19    /// static GMemoryMonitor *
20    /// monitor_low_memory (void)
21    /// {
22    ///   GMemoryMonitor *m;
23    ///   m = g_memory_monitor_dup_default ();
24    ///   g_signal_connect (G_OBJECT (m), "low-memory-warning",
25    ///                     G_CALLBACK (warning_cb), NULL);
26    ///   return m;
27    /// }
28    /// ```text
29    ///
30    /// Don’t forget to disconnect the [`low-memory-warning`][struct@crate::MemoryMonitor#low-memory-warning]
31    /// signal, and unref the `GMemoryMonitor` itself when exiting.
32    ///
33    /// ## Signals
34    ///
35    ///
36    /// #### `low-memory-warning`
37    ///  Emitted when the system is running low on free memory.
38    ///
39    /// The signal
40    /// handler should then take the appropriate action depending on the
41    /// warning level. See the #GMemoryMonitorWarningLevel documentation for
42    /// details.
43    ///
44    /// Since the [`MemoryMonitor`][crate::MemoryMonitor] is a singleton, this signal will be
45    /// emitted in the [`glib::MainContext::default()`][crate::glib::MainContext::default()][global-default main
46    /// context].
47    ///
48    ///
49    ///
50    /// # Implements
51    ///
52    /// [`MemoryMonitorExt`][trait@crate::prelude::MemoryMonitorExt], [`InitableExt`][trait@crate::prelude::InitableExt]
53    #[doc(alias = "GMemoryMonitor")]
54    pub struct MemoryMonitor(Interface<ffi::GMemoryMonitor, ffi::GMemoryMonitorInterface>) @requires Initable;
55
56    match fn {
57        type_ => || ffi::g_memory_monitor_get_type(),
58    }
59}
60
61impl MemoryMonitor {
62    pub const NONE: Option<&'static MemoryMonitor> = None;
63
64    /// Gets a reference to the default #GMemoryMonitor for the system.
65    ///
66    /// # Returns
67    ///
68    /// a new reference to the default #GMemoryMonitor
69    #[doc(alias = "g_memory_monitor_dup_default")]
70    pub fn dup_default() -> MemoryMonitor {
71        unsafe { from_glib_full(ffi::g_memory_monitor_dup_default()) }
72    }
73}
74
75/// Trait containing all [`struct@MemoryMonitor`] methods.
76///
77/// # Implementors
78///
79/// [`MemoryMonitor`][struct@crate::MemoryMonitor]
80pub trait MemoryMonitorExt: IsA<MemoryMonitor> + 'static {
81    /// Emitted when the system is running low on free memory.
82    ///
83    /// The signal
84    /// handler should then take the appropriate action depending on the
85    /// warning level. See the #GMemoryMonitorWarningLevel documentation for
86    /// details.
87    ///
88    /// Since the [`MemoryMonitor`][crate::MemoryMonitor] is a singleton, this signal will be
89    /// emitted in the [`glib::MainContext::default()`][crate::glib::MainContext::default()][global-default main
90    /// context].
91    /// ## `level`
92    /// the #GMemoryMonitorWarningLevel warning level
93    #[cfg(feature = "v2_64")]
94    #[cfg_attr(docsrs, doc(cfg(feature = "v2_64")))]
95    #[doc(alias = "low-memory-warning")]
96    fn connect_low_memory_warning<F: Fn(&Self, MemoryMonitorWarningLevel) + 'static>(
97        &self,
98        f: F,
99    ) -> SignalHandlerId {
100        unsafe extern "C" fn low_memory_warning_trampoline<
101            P: IsA<MemoryMonitor>,
102            F: Fn(&P, MemoryMonitorWarningLevel) + 'static,
103        >(
104            this: *mut ffi::GMemoryMonitor,
105            level: ffi::GMemoryMonitorWarningLevel,
106            f: glib::ffi::gpointer,
107        ) {
108            unsafe {
109                let f: &F = &*(f as *const F);
110                f(
111                    MemoryMonitor::from_glib_borrow(this).unsafe_cast_ref(),
112                    from_glib(level),
113                )
114            }
115        }
116        unsafe {
117            let f: Box_<F> = Box_::new(f);
118            connect_raw(
119                self.as_ptr() as *mut _,
120                c"low-memory-warning".as_ptr(),
121                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
122                    low_memory_warning_trampoline::<Self, F> as *const (),
123                )),
124                Box_::into_raw(f),
125            )
126        }
127    }
128}
129
130impl<O: IsA<MemoryMonitor>> MemoryMonitorExt for O {}
gio/auto/memory_monitor.rs

gio/auto/
memory_monitor.rs
