1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* Copyright © 2024 Michael Smith <mikesmiffy128@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _WIN32
#include <stdlib.h>
#endif
#include "intdefs.h"
#include "vcall.h"
// XXX: not sure if "ext" is the best naming convention? use brain later
#ifdef _WIN32
__declspec(dllimport) void *g_pMemAlloc;
// this interface has changed a bit between versions but thankfully the basic
// functions we care about have always been at the start - nice and easy.
// note that since Microsoft are a bunch of crazies, overloads are grouped and
// reversed so the vtable order here is maybe not what you'd expect otherwise.
DECL_VFUNC(void *, Alloc, 1, usize)
DECL_VFUNC(void *, Realloc, 3, void *, usize)
DECL_VFUNC(void, Free, 5, void *)
void *extmalloc(usize sz) { return Alloc(g_pMemAlloc, sz); }
void *extrealloc(void *mem, usize sz) { return Realloc(g_pMemAlloc, mem, sz); }
void extfree(void *mem) { Free(g_pMemAlloc, mem); }
#else
#include "langext.h"
void Error(const char *fmt, ...); // stub left out of con_.h (not that useful)
// Linux Source doesn't seem to bother with the custom allocator stuff at all.
// We still want to check for OoM though, because turning off overcommit is a
// right, not a privilege. Like func_vehicle.
void *extmalloc(usize sz) {
void *ret = malloc(sz);
if_cold (!ret) Error("sst: out of memory");
return ret;
}
void *extrealloc(void *mem, usize sz) {
void *ret = realloc(mem, sz);
if_cold (!ret) Error("sst: out of memory");
return ret;
}
// note: extfree is #defined to free in the header
#endif
// vi: sw=4 ts=4 noet tw=80 cc=80
|
