1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBC_INCLUDE_MALLOC_H_ 18 #define LIBC_INCLUDE_MALLOC_H_ 19 20 #include <sys/cdefs.h> 21 #include <stddef.h> 22 #include <stdio.h> 23 24 __BEGIN_DECLS 25 26 extern void* malloc(size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(1))); 27 extern void* calloc(size_t item_count, size_t item_size) __mallocfunc __wur __attribute__((alloc_size(1,2))); 28 extern void* realloc(void* p, size_t byte_count) __wur __attribute__((alloc_size(2))); 29 extern void free(void* p); 30 31 extern void* memalign(size_t alignment, size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(2))); 32 extern size_t malloc_usable_size(const void* p); 33 34 #ifndef STRUCT_MALLINFO_DECLARED 35 #define STRUCT_MALLINFO_DECLARED 1 36 struct mallinfo { 37 size_t arena; /* Total number of non-mmapped bytes currently allocated from OS. */ 38 size_t ordblks; /* Number of free chunks. */ 39 size_t smblks; /* (Unused.) */ 40 size_t hblks; /* (Unused.) */ 41 size_t hblkhd; /* Total number of bytes in mmapped regions. */ 42 size_t usmblks; /* Maximum total allocated space; greater than total if trimming has occurred. */ 43 size_t fsmblks; /* (Unused.) */ 44 size_t uordblks; /* Total allocated space (normal or mmapped.) */ 45 size_t fordblks; /* Total free space. */ 46 size_t keepcost; /* Upper bound on number of bytes releasable by malloc_trim. */ 47 }; 48 #endif /* STRUCT_MALLINFO_DECLARED */ 49 50 extern struct mallinfo mallinfo(void); 51 52 /* 53 * XML structure for malloc_info(3) is in the following format: 54 * 55 * <malloc version="jemalloc-1"> 56 * <heap nr="INT"> 57 * <allocated-large>INT</allocated-large> 58 * <allocated-huge>INT</allocated-huge> 59 * <allocated-bins>INT</allocated-bins> 60 * <bins-total>INT</bins-total> 61 * <bin nr="INT"> 62 * <allocated>INT</allocated> 63 * <nmalloc>INT</nmalloc> 64 * <ndalloc>INT</ndalloc> 65 * </bin> 66 * <!-- more bins --> 67 * </heap> 68 * <!-- more heaps --> 69 * </malloc> 70 */ 71 extern int malloc_info(int, FILE *); 72 73 __END_DECLS 74 75 #endif /* LIBC_INCLUDE_MALLOC_H_ */ 76