The Tor Browser / file comparison
comparison: memory/build/mozjemalloc_compat.c
memory/build/mozjemalloc_compat.c
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:527a81d1a527 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef MOZ_JEMALLOC3 | |
| 6 # error Should only compile this file when building with jemalloc 3 | |
| 7 #endif | |
| 8 | |
| 9 #define MOZ_JEMALLOC_IMPL | |
| 10 | |
| 11 #include "mozmemory_wrap.h" | |
| 12 #include "jemalloc_types.h" | |
| 13 #include "mozilla/Types.h" | |
| 14 | |
| 15 #if defined(MOZ_NATIVE_JEMALLOC) | |
| 16 | |
| 17 MOZ_IMPORT_API int | |
| 18 je_(mallctl)(const char*, void*, size_t*, void*, size_t); | |
| 19 MOZ_IMPORT_API int | |
| 20 je_(mallctlnametomib)(const char *name, size_t *mibp, size_t *miblenp); | |
| 21 MOZ_IMPORT_API int | |
| 22 je_(mallctlbymib)(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen); | |
| 23 MOZ_IMPORT_API int | |
| 24 je_(nallocm)(size_t *rsize, size_t size, int flags); | |
| 25 | |
| 26 #else | |
| 27 # include "jemalloc/jemalloc.h" | |
| 28 #endif | |
| 29 | |
| 30 /* | |
| 31 * CTL_* macros are from memory/jemalloc/src/src/stats.c with changes: | |
| 32 * - drop `t' argument to avoid redundancy in calculating type size | |
| 33 * - require `i' argument for arena number explicitly | |
| 34 */ | |
| 35 | |
| 36 #define CTL_GET(n, v) do { \ | |
| 37 size_t sz = sizeof(v); \ | |
| 38 je_(mallctl)(n, &v, &sz, NULL, 0); \ | |
| 39 } while (0) | |
| 40 | |
| 41 #define CTL_I_GET(n, v, i) do { \ | |
| 42 size_t mib[6]; \ | |
| 43 size_t miblen = sizeof(mib) / sizeof(mib[0]); \ | |
| 44 size_t sz = sizeof(v); \ | |
| 45 je_(mallctlnametomib)(n, mib, &miblen); \ | |
| 46 mib[2] = i; \ | |
| 47 je_(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \ | |
| 48 } while (0) | |
| 49 | |
| 50 MOZ_MEMORY_API size_t | |
| 51 malloc_good_size_impl(size_t size) | |
| 52 { | |
| 53 size_t ret; | |
| 54 /* je_nallocm crashes when given a size of 0. As | |
| 55 * malloc_usable_size(malloc(0)) and malloc_usable_size(malloc(1)) | |
| 56 * return the same value, use a size of 1. */ | |
| 57 if (size == 0) | |
| 58 size = 1; | |
| 59 if (!je_(nallocm)(&ret, size, 0)) | |
| 60 return ret; | |
| 61 return size; | |
| 62 } | |
| 63 | |
| 64 MOZ_JEMALLOC_API void | |
| 65 jemalloc_stats_impl(jemalloc_stats_t *stats) | |
| 66 { | |
| 67 unsigned narenas; | |
| 68 size_t active, allocated, mapped, page, pdirty; | |
| 69 | |
| 70 CTL_GET("arenas.narenas", narenas); | |
| 71 CTL_GET("arenas.page", page); | |
| 72 CTL_GET("stats.active", active); | |
| 73 CTL_GET("stats.allocated", allocated); | |
| 74 CTL_GET("stats.mapped", mapped); | |
| 75 | |
| 76 /* get the summation for all arenas, i == narenas */ | |
| 77 CTL_I_GET("stats.arenas.0.pdirty", pdirty, narenas); | |
| 78 | |
| 79 stats->mapped = mapped; | |
| 80 stats->allocated = allocated; | |
| 81 stats->waste = active - allocated; | |
| 82 stats->page_cache = pdirty * page; | |
| 83 | |
| 84 // We could get this value out of base.c::base_pages, but that really should | |
| 85 // be an upstream change, so don't worry about it for now. | |
| 86 stats->bookkeeping = 0; | |
| 87 } | |
| 88 | |
| 89 MOZ_JEMALLOC_API void | |
| 90 jemalloc_purge_freed_pages_impl() | |
| 91 { | |
| 92 } | |
| 93 | |
| 94 MOZ_JEMALLOC_API void | |
| 95 jemalloc_free_dirty_pages_impl() | |
| 96 { | |
| 97 je_(mallctl)("arenas.purge", NULL, 0, NULL, 0); | |
| 98 } |
