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95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZ_JEMALLOC3
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# error Should only compile this file when building with jemalloc 3
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#endif
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#define MOZ_JEMALLOC_IMPL
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#include "mozmemory_wrap.h"
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#include "jemalloc_types.h"
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#include "mozilla/Types.h"
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#if defined(MOZ_NATIVE_JEMALLOC)
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MOZ_IMPORT_API int
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je_(mallctl)(const char*, void*, size_t*, void*, size_t);
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MOZ_IMPORT_API int
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je_(mallctlnametomib)(const char *name, size_t *mibp, size_t *miblenp);
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MOZ_IMPORT_API int
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je_(mallctlbymib)(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen);
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MOZ_IMPORT_API int
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je_(nallocm)(size_t *rsize, size_t size, int flags);
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#else
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# include "jemalloc/jemalloc.h"
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#endif
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/*
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* CTL_* macros are from memory/jemalloc/src/src/stats.c with changes:
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* - drop `t' argument to avoid redundancy in calculating type size
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* - require `i' argument for arena number explicitly
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*/
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#define CTL_GET(n, v) do { \
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size_t sz = sizeof(v); \
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je_(mallctl)(n, &v, &sz, NULL, 0); \
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} while (0)
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#define CTL_I_GET(n, v, i) do { \
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size_t mib[6]; \
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size_t miblen = sizeof(mib) / sizeof(mib[0]); \
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size_t sz = sizeof(v); \
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je_(mallctlnametomib)(n, mib, &miblen); \
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mib[2] = i; \
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je_(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \
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} while (0)
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MOZ_MEMORY_API size_t
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malloc_good_size_impl(size_t size)
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{
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size_t ret;
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/* je_nallocm crashes when given a size of 0. As
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* malloc_usable_size(malloc(0)) and malloc_usable_size(malloc(1))
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* return the same value, use a size of 1. */
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if (size == 0)
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size = 1;
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if (!je_(nallocm)(&ret, size, 0))
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return ret;
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return size;
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}
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MOZ_JEMALLOC_API void
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jemalloc_stats_impl(jemalloc_stats_t *stats)
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{
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unsigned narenas;
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size_t active, allocated, mapped, page, pdirty;
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CTL_GET("arenas.narenas", narenas);
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CTL_GET("arenas.page", page);
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CTL_GET("stats.active", active);
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CTL_GET("stats.allocated", allocated);
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CTL_GET("stats.mapped", mapped);
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/* get the summation for all arenas, i == narenas */
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CTL_I_GET("stats.arenas.0.pdirty", pdirty, narenas);
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stats->allocated = allocated;
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stats->mapped = mapped;
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stats->dirty = pdirty * page;
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stats->committed = active + stats->dirty;
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}
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MOZ_JEMALLOC_API void
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jemalloc_purge_freed_pages_impl()
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{
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}
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MOZ_JEMALLOC_API void
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jemalloc_free_dirty_pages_impl()
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{
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je_(mallctl)("arenas.purge", NULL, 0, NULL, 0);
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}
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