gecko/memory/build/mozjemalloc_compat.c

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/* 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/. */
#include "mozilla/Types.h"
#include "jemalloc_types.h"
#if defined(MOZ_NATIVE_JEMALLOC)
#define wrap(a) a
#else
#define wrap(a) je_ ## a
#endif
/*
* 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); \
wrap(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); \
wrap(mallctlnametomib)(n, mib, &miblen); \
mib[2] = i; \
wrap(mallctlbymib)(mib, miblen, &v, &sz, NULL, 0); \
} while (0)
MOZ_IMPORT_API(int)
wrap(mallctl)(const char*, void*, size_t*, void*, size_t);
MOZ_IMPORT_API(int)
wrap(mallctlnametomib)(const char *name, size_t *mibp, size_t *miblenp);
MOZ_IMPORT_API(int)
wrap(mallctlbymib)(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen);
MOZ_EXPORT_API(void)
jemalloc_stats(jemalloc_stats_t *stats)
{
unsigned narenas;
size_t active, allocated, mapped, page, pdirty;
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);
/* get the summation for all arenas, i == narenas */
CTL_I_GET("stats.arenas.0.pdirty", pdirty, narenas);
stats->allocated = allocated;
stats->mapped = mapped;
stats->dirty = pdirty * page;
stats->committed = active + stats->dirty;
}