memory/build/mozjemalloc_compat.c@6474c204b198 (annotated)
memory/build/mozjemalloc_compat.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 3 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef MOZ_JEMALLOC3 |
| michael@0 | 6 | # error Should only compile this file when building with jemalloc 3 |
| michael@0 | 7 | #endif |
| michael@0 | 8 | |
| michael@0 | 9 | #define MOZ_JEMALLOC_IMPL |
| michael@0 | 10 | |
| michael@0 | 11 | #include "mozmemory_wrap.h" |
| michael@0 | 12 | #include "jemalloc_types.h" |
| michael@0 | 13 | #include "mozilla/Types.h" |
| michael@0 | 14 | |
| michael@0 | 15 | #if defined(MOZ_NATIVE_JEMALLOC) |
| michael@0 | 16 | |
| michael@0 | 17 | MOZ_IMPORT_API int |
| michael@0 | 18 | je_(mallctl)(const char*, void*, size_t*, void*, size_t); |
| michael@0 | 19 | MOZ_IMPORT_API int |
| michael@0 | 20 | je_(mallctlnametomib)(const char *name, size_t *mibp, size_t *miblenp); |
| michael@0 | 21 | MOZ_IMPORT_API int |
| michael@0 | 22 | je_(mallctlbymib)(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen); |
| michael@0 | 23 | MOZ_IMPORT_API int |
| michael@0 | 24 | je_(nallocm)(size_t *rsize, size_t size, int flags); |
| michael@0 | 25 | |
| michael@0 | 26 | #else |
| michael@0 | 27 | # include "jemalloc/jemalloc.h" |
| michael@0 | 28 | #endif |
| michael@0 | 29 | |
| michael@0 | 30 | /* |
| michael@0 | 31 | * CTL_* macros are from memory/jemalloc/src/src/stats.c with changes: |
| michael@0 | 32 | * - drop `t' argument to avoid redundancy in calculating type size |
| michael@0 | 33 | * - require `i' argument for arena number explicitly |
| michael@0 | 34 | */ |
| michael@0 | 35 | |
| michael@0 | 36 | #define CTL_GET(n, v) do { \ |
| michael@0 | 37 | size_t sz = sizeof(v); \ |
| michael@0 | 38 | je_(mallctl)(n, &v, &sz, NULL, 0); \ |
| michael@0 | 39 | } while (0) |
| michael@0 | 40 | |
| michael@0 | 41 | #define CTL_I_GET(n, v, i) do { \ |
| michael@0 | 42 | size_t mib[6]; \ |
| michael@0 | 43 | size_t miblen = sizeof(mib) / sizeof(mib[0]); \ |
| michael@0 | 44 | size_t sz = sizeof(v); \ |
| michael@0 | 45 | je_(mallctlnametomib)(n, mib, &miblen); \ |
| michael@0 | 46 | mib[2] = i; \ |
| michael@0 | 47 | je_(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \ |
| michael@0 | 48 | } while (0) |
| michael@0 | 49 | |
| michael@0 | 50 | MOZ_MEMORY_API size_t |
| michael@0 | 51 | malloc_good_size_impl(size_t size) |
| michael@0 | 52 | { |
| michael@0 | 53 | size_t ret; |
| michael@0 | 54 | /* je_nallocm crashes when given a size of 0. As |
| michael@0 | 55 | * malloc_usable_size(malloc(0)) and malloc_usable_size(malloc(1)) |
| michael@0 | 56 | * return the same value, use a size of 1. */ |
| michael@0 | 57 | if (size == 0) |
| michael@0 | 58 | size = 1; |
| michael@0 | 59 | if (!je_(nallocm)(&ret, size, 0)) |
| michael@0 | 60 | return ret; |
| michael@0 | 61 | return size; |
| michael@0 | 62 | } |
| michael@0 | 63 | |
| michael@0 | 64 | MOZ_JEMALLOC_API void |
| michael@0 | 65 | jemalloc_stats_impl(jemalloc_stats_t *stats) |
| michael@0 | 66 | { |
| michael@0 | 67 | unsigned narenas; |
| michael@0 | 68 | size_t active, allocated, mapped, page, pdirty; |
| michael@0 | 69 | |
| michael@0 | 70 | CTL_GET("arenas.narenas", narenas); |
| michael@0 | 71 | CTL_GET("arenas.page", page); |
| michael@0 | 72 | CTL_GET("stats.active", active); |
| michael@0 | 73 | CTL_GET("stats.allocated", allocated); |
| michael@0 | 74 | CTL_GET("stats.mapped", mapped); |
| michael@0 | 75 | |
| michael@0 | 76 | /* get the summation for all arenas, i == narenas */ |
| michael@0 | 77 | CTL_I_GET("stats.arenas.0.pdirty", pdirty, narenas); |
| michael@0 | 78 | |
| michael@0 | 79 | stats->mapped = mapped; |
| michael@0 | 80 | stats->allocated = allocated; |
| michael@0 | 81 | stats->waste = active - allocated; |
| michael@0 | 82 | stats->page_cache = pdirty * page; |
| michael@0 | 83 | |
| michael@0 | 84 | // We could get this value out of base.c::base_pages, but that really should |
| michael@0 | 85 | // be an upstream change, so don't worry about it for now. |
| michael@0 | 86 | stats->bookkeeping = 0; |
| michael@0 | 87 | } |
| michael@0 | 88 | |
| michael@0 | 89 | MOZ_JEMALLOC_API void |
| michael@0 | 90 | jemalloc_purge_freed_pages_impl() |
| michael@0 | 91 | { |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | MOZ_JEMALLOC_API void |
| michael@0 | 95 | jemalloc_free_dirty_pages_impl() |
| michael@0 | 96 | { |
| michael@0 | 97 | je_(mallctl)("arenas.purge", NULL, 0, NULL, 0); |
| michael@0 | 98 | } |
