openjp2/
malloc.rs

1use super::openjpeg::*;
2
3extern "C" {
4
5  fn malloc(_: usize) -> *mut core::ffi::c_void;
6
7  fn calloc(_: usize, _: usize) -> *mut core::ffi::c_void;
8
9  fn realloc(_: *mut core::ffi::c_void, _: usize) -> *mut core::ffi::c_void;
10
11  fn free(_: *mut core::ffi::c_void);
12
13  fn memcpy(
14    _: *mut core::ffi::c_void,
15    _: *const core::ffi::c_void,
16    _: usize,
17  ) -> *mut core::ffi::c_void;
18}
19
20pub(crate) fn opj_malloc(mut size: size_t) -> *mut core::ffi::c_void {
21  unsafe {
22    if size == 0 {
23      /* prevent implementation defined behavior of realloc */
24      return core::ptr::null_mut::<core::ffi::c_void>();
25    }
26    malloc(size)
27  }
28}
29
30pub(crate) fn opj_calloc(mut num: size_t, mut size: size_t) -> *mut core::ffi::c_void {
31  unsafe {
32    if num == 0 || size == 0 {
33      /* prevent implementation defined behavior of realloc */
34      return core::ptr::null_mut::<core::ffi::c_void>();
35    }
36    calloc(num, size)
37  }
38}
39
40pub(crate) fn opj_realloc(
41  mut ptr: *mut core::ffi::c_void,
42  mut new_size: size_t,
43) -> *mut core::ffi::c_void {
44  unsafe {
45    if new_size == 0 {
46      /* prevent implementation defined behavior of realloc */
47      return core::ptr::null_mut::<core::ffi::c_void>();
48    }
49    realloc(ptr, new_size)
50  }
51}
52
53pub(crate) fn opj_free(mut ptr: *mut core::ffi::c_void) {
54  unsafe {
55    free(ptr);
56  }
57}
openjp2/malloc.rs

openjp2/
malloc.rs
