pub unsafe fn replace<F: Copy>(
target: F,
replacement: F,
) -> Result<ReplaceHandle<F>>Examples found in repository?
examples/install_replace.rs (lines 80-83)
49fn main() -> dobby_rs_framework::Result<()> {
50 common::init_example_logging();
51
52 // EN: 1) `install` -> typed handle.
53 // CN: 1) `install` -> 返回带类型的句柄。
54 let h1 = unsafe {
55 install(
56 common::target_mul as fn(i32) -> i32,
57 detour_mul as fn(i32) -> i32,
58 )?
59 };
60 println!("target_mul(3) after install = {}", common::target_mul(3));
61 unsafe { h1.unhook()? };
62
63 // EN: 2) `install_addr` -> raw pointer variant.
64 // CN: 2) `install_addr` -> 按地址安装（裸指针版本）。
65 let h1_addr = unsafe {
66 install_addr(
67 common::target_mul as *const () as *mut c_void,
68 detour_mul as *const () as *mut c_void,
69 )?
70 };
71 println!(
72 "target_mul(3) after install_addr = {}",
73 common::target_mul(3)
74 );
75 unsafe { h1_addr.unhook()? };
76
77 // EN: 3) `replace` -> temporary swap, with easy access to original.
78 // CN: 3) `replace` -> 临时替换，并且可以拿到 original。
79 let r = unsafe {
80 replace(
81 common::target_sub as fn(i32) -> i32,
82 replacement_sub as fn(i32) -> i32,
83 )?
84 };
85 println!("target_sub(10) after replace = {}", common::target_sub(10));
86 println!("original target_sub(10) = {}", (r.original())(10));
87 unsafe { r.unreplace()? };
88
89 // EN: 4) `install_with` -> before/after callbacks (invoked by detour).
90 // CN: 4) `install_with` -> before/after 回调（由 detour 调用）。
91 let h2 = unsafe {
92 install_with(
93 target_with_callbacks as fn(i32) -> i32,
94 detour_with_callbacks as fn(i32) -> i32,
95 Some(|| log::info!("before (install_with)")),
96 Some(|| log::info!("after (install_with)")),
97 )?
98 };
99 println!(
100 "target_with_callbacks(1) after install_with = {}",
101 target_with_callbacks(1)
102 );
103 unsafe { h2.unhook()? };
104
105 Ok(())
106}