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Diffstat (limited to 'memory/build/mozjemalloc_compat.c')
| -rw-r--r-- | memory/build/mozjemalloc_compat.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/memory/build/mozjemalloc_compat.c b/memory/build/mozjemalloc_compat.c deleted file mode 100644 index 0b3b333d4..000000000 --- a/memory/build/mozjemalloc_compat.c +++ /dev/null @@ -1,178 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this file, - * You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#ifndef MOZ_JEMALLOC4 -# error Should only compile this file when building with jemalloc 3 -#endif - -#define MOZ_JEMALLOC_IMPL - -#include "mozmemory_wrap.h" -#include "jemalloc_types.h" -#include "mozilla/Types.h" - -#include <stdbool.h> - -#include "jemalloc/jemalloc.h" - -/* - * CTL_* macros are from memory/jemalloc/src/src/stats.c with changes: - * - drop `t' argument to avoid redundancy in calculating type size - * - require `i' argument for arena number explicitly - */ - -#define CTL_GET(n, v) do { \ - size_t sz = sizeof(v); \ - je_(mallctl)(n, &v, &sz, NULL, 0); \ -} while (0) - -#define CTL_I_GET(n, v, i) do { \ - size_t mib[6]; \ - size_t miblen = sizeof(mib) / sizeof(mib[0]); \ - size_t sz = sizeof(v); \ - je_(mallctlnametomib)(n, mib, &miblen); \ - mib[2] = i; \ - je_(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \ -} while (0) - -#define CTL_IJ_GET(n, v, i, j) do { \ - size_t mib[6]; \ - size_t miblen = sizeof(mib) / sizeof(mib[0]); \ - size_t sz = sizeof(v); \ - je_(mallctlnametomib)(n, mib, &miblen); \ - mib[2] = i; \ - mib[4] = j; \ - je_(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \ -} while (0) - -/* - * VARIABLE_ARRAY is copied from - * memory/jemalloc/src/include/jemalloc/internal/jemalloc_internal.h.in - */ -#if __STDC_VERSION__ < 199901L -# ifdef _MSC_VER -# include <malloc.h> -# define alloca _alloca -# else -# ifdef HAVE_ALLOCA_H -# include <alloca.h> -# else -# include <stdlib.h> -# endif -# endif -# define VARIABLE_ARRAY(type, name, count) \ - type *name = alloca(sizeof(type) * (count)) -#else -# define VARIABLE_ARRAY(type, name, count) type name[(count)] -#endif - -MOZ_MEMORY_API size_t -malloc_good_size_impl(size_t size) -{ - /* je_nallocx crashes when given a size of 0. As - * malloc_usable_size(malloc(0)) and malloc_usable_size(malloc(1)) - * return the same value, use a size of 1. */ - if (size == 0) - size = 1; - return je_(nallocx)(size, 0); -} - -static void -compute_bin_unused_and_bookkeeping(jemalloc_stats_t *stats, unsigned int narenas) -{ - size_t bin_unused = 0; - - uint32_t nregs; // number of regions per run in the j-th bin - size_t reg_size; // size of regions served by the j-th bin - size_t curruns; // number of runs belonging to a bin - size_t curregs; // number of allocated regions in a bin - - unsigned int nbins; // number of bins per arena - unsigned int i, j; - - size_t stats_metadata; - size_t stats_ametadata = 0; // total internal allocations in all arenas - - // narenas also counts uninitialized arenas, and initialized arenas - // are not guaranteed to be adjacent - VARIABLE_ARRAY(bool, initialized, narenas); - size_t isz = sizeof(initialized) / sizeof(initialized[0]); - - je_(mallctl)("arenas.initialized", initialized, &isz, NULL, 0); - CTL_GET("arenas.nbins", nbins); - - for (j = 0; j < nbins; j++) { - CTL_I_GET("arenas.bin.0.nregs", nregs, j); - CTL_I_GET("arenas.bin.0.size", reg_size, j); - - for (i = 0; i < narenas; i++) { - if (!initialized[i]) { - continue; - } - - CTL_IJ_GET("stats.arenas.0.bins.0.curruns", curruns, i, j); - CTL_IJ_GET("stats.arenas.0.bins.0.curregs", curregs, i, j); - - bin_unused += (nregs * curruns - curregs) * reg_size; - } - } - - CTL_GET("stats.metadata", stats_metadata); - - /* get the summation for all arenas, i == narenas */ - CTL_I_GET("stats.arenas.0.metadata.allocated", stats_ametadata, narenas); - - stats->bookkeeping = stats_metadata - stats_ametadata; - stats->bin_unused = bin_unused; -} - -MOZ_JEMALLOC_API void -jemalloc_stats_impl(jemalloc_stats_t *stats) -{ - unsigned narenas; - size_t active, allocated, mapped, page, pdirty; - size_t lg_chunk; - - // Refresh jemalloc's stats by updating its epoch, see ctl_refresh in - // src/ctl.c - uint64_t epoch = 0; - size_t esz = sizeof(epoch); - je_(mallctl)("epoch", &epoch, &esz, &epoch, esz); - - CTL_GET("arenas.narenas", narenas); - CTL_GET("arenas.page", page); - CTL_GET("stats.active", active); - CTL_GET("stats.allocated", allocated); - CTL_GET("stats.mapped", mapped); - CTL_GET("opt.lg_chunk", lg_chunk); - - /* get the summation for all arenas, i == narenas */ - CTL_I_GET("stats.arenas.0.pdirty", pdirty, narenas); - - stats->chunksize = (size_t) 1 << lg_chunk; - stats->mapped = mapped; - stats->allocated = allocated; - stats->waste = active - allocated; - stats->page_cache = pdirty * page; - compute_bin_unused_and_bookkeeping(stats, narenas); - stats->waste -= stats->bin_unused; -} - -MOZ_JEMALLOC_API void -jemalloc_purge_freed_pages_impl() -{ -} - -MOZ_JEMALLOC_API void -jemalloc_free_dirty_pages_impl() -{ - unsigned narenas; - size_t mib[3]; - size_t miblen = sizeof(mib) / sizeof(mib[0]); - - CTL_GET("arenas.narenas", narenas); - je_(mallctlnametomib)("arena.0.purge", mib, &miblen); - mib[1] = narenas; - je_(mallctlbymib)(mib, miblen, NULL, NULL, NULL, 0); -} |