| 1 | // Copyright (c) 2020-2024 Joe Conigliaro. All rights reserved. |
| 2 | // Use of this source code is governed by an MIT license |
| 3 | // that can be found in the LICENSE file. |
| 4 | module transformer |
| 5 | |
| 6 | #include <malloc/malloc.h> |
| 7 | |
| 8 | struct C.malloc_statistics_t { |
| 9 | blocks_in_use u32 |
| 10 | size_in_use usize |
| 11 | max_size_in_use usize |
| 12 | size_allocated usize |
| 13 | } |
| 14 | |
| 15 | fn C.malloc_default_zone() voidptr |
| 16 | fn C.malloc_zone_statistics(zone voidptr, stats &C.malloc_statistics_t) |
| 17 | |
| 18 | // darwin_transform_live_mb returns the process's currently live malloc bytes |
| 19 | // (in MB) on macOS. Used by t_print_mem; only referenced from its `$if macos` |
| 20 | // branch, so the macOS-only C calls here never reach other platforms. |
| 21 | fn darwin_transform_live_mb() u64 { |
| 22 | mut st := C.malloc_statistics_t{} |
| 23 | C.malloc_zone_statistics(C.malloc_default_zone(), &st) |
| 24 | return u64(st.size_in_use) / (1024 * 1024) |
| 25 | } |
| 26 | |