4caa1f0977
Expose jemalloc stats through the malloc_info(3) interface. Bug: 16874689 Change-Id: I4358ac283002e60ff161107028d1a3fb1e9afb0a
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LIBC_INCLUDE_MALLOC_H_
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#define LIBC_INCLUDE_MALLOC_H_
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/*
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* Declaration of malloc routines. Bionic uses dlmalloc (see
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* upstream-dlmalloc) but doesn't directly include it here to keep the
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* defined malloc.h interface small.
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*/
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#include <sys/cdefs.h>
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#include <stddef.h>
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#include <stdio.h>
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__BEGIN_DECLS
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extern void* malloc(size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(1)));
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extern void* calloc(size_t item_count, size_t item_size) __mallocfunc __wur __attribute__((alloc_size(1,2)));
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extern void* realloc(void* p, size_t byte_count) __wur __attribute__((alloc_size(2)));
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extern void free(void* p);
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extern void* memalign(size_t alignment, size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(2)));
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extern size_t malloc_usable_size(const void* p);
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#ifndef STRUCT_MALLINFO_DECLARED
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#define STRUCT_MALLINFO_DECLARED 1
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struct mallinfo {
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size_t arena; /* Total number of non-mmapped bytes currently allocated from OS. */
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size_t ordblks; /* Number of free chunks. */
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size_t smblks; /* (Unused.) */
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size_t hblks; /* (Unused.) */
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size_t hblkhd; /* Total number of bytes in mmapped regions. */
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size_t usmblks; /* Maximum total allocated space; greater than total if trimming has occurred. */
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size_t fsmblks; /* (Unused.) */
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size_t uordblks; /* Total allocated space (normal or mmapped.) */
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size_t fordblks; /* Total free space. */
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size_t keepcost; /* Upper bound on number of bytes releasable by malloc_trim. */
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};
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#endif /* STRUCT_MALLINFO_DECLARED */
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extern struct mallinfo mallinfo(void);
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/*
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* XML structure for malloc_info(3) is in the following format:
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*
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* <malloc version="jemalloc-1">
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* <heap nr="INT">
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* <allocated-large>INT</allocated-large>
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* <allocated-huge>INT</allocated-huge>
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* <allocated-bins>INT</allocated-bins>
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* <bins-total>INT</bins-total>
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* <bin nr="INT">
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* <allocated>INT</allocated>
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* <nmalloc>INT</nmalloc>
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* <ndalloc>INT</ndalloc>
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* </bin>
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* <!-- more bins -->
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* </heap>
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* <!-- more heaps -->
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* </malloc>
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*/
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extern int malloc_info(int, FILE *);
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__END_DECLS
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#endif /* LIBC_INCLUDE_MALLOC_H_ */
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