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 #if defined(__clang__) 27 /* clang should support alloc_size in the nearish future. */ 28 #if __has_attribute(alloc_size) 29 #error "We should enable alloc_size for clang." 30 #else 31 #define __BIONIC_ALLOC_SIZE(...) 32 #endif 33 #else 34 #define __BIONIC_ALLOC_SIZE(...) __attribute__((__alloc_size__(__VA_ARGS__))) 35 #endif 36 37 void* malloc(size_t byte_count) __mallocfunc __BIONIC_ALLOC_SIZE(1) __wur; 38 void* calloc(size_t item_count, size_t item_size) __mallocfunc __BIONIC_ALLOC_SIZE(1,2) __wur; 39 void* realloc(void* p, size_t byte_count) __BIONIC_ALLOC_SIZE(2) __wur; 40 void free(void* p); 41 42 void* memalign(size_t alignment, size_t byte_count) __mallocfunc __BIONIC_ALLOC_SIZE(2) __wur; 43 size_t malloc_usable_size(const void* p) __INTRODUCED_IN(17); 44 45 #ifndef STRUCT_MALLINFO_DECLARED 46 #define STRUCT_MALLINFO_DECLARED 1 47 struct mallinfo { 48 size_t arena; /* Total number of non-mmapped bytes currently allocated from OS. */ 49 size_t ordblks; /* Number of free chunks. */ 50 size_t smblks; /* (Unused.) */ 51 size_t hblks; /* (Unused.) */ 52 size_t hblkhd; /* Total number of bytes in mmapped regions. */ 53 size_t usmblks; /* Maximum total allocated space; greater than total if trimming has occurred. */ 54 size_t fsmblks; /* (Unused.) */ 55 size_t uordblks; /* Total allocated space (normal or mmapped.) */ 56 size_t fordblks; /* Total free space. */ 57 size_t keepcost; /* Upper bound on number of bytes releasable by malloc_trim. */ 58 }; 59 #endif /* STRUCT_MALLINFO_DECLARED */ 60 61 struct mallinfo mallinfo(void); 62 63 /* 64 * XML structure for malloc_info(3) is in the following format: 65 * 66 * <malloc version="jemalloc-1"> 67 * <heap nr="INT"> 68 * <allocated-large>INT</allocated-large> 69 * <allocated-huge>INT</allocated-huge> 70 * <allocated-bins>INT</allocated-bins> 71 * <bins-total>INT</bins-total> 72 * <bin nr="INT"> 73 * <allocated>INT</allocated> 74 * <nmalloc>INT</nmalloc> 75 * <ndalloc>INT</ndalloc> 76 * </bin> 77 * <!-- more bins --> 78 * </heap> 79 * <!-- more heaps --> 80 * </malloc> 81 */ 82 int malloc_info(int, FILE*) __INTRODUCED_IN(23); 83 84 /* mallopt options */ 85 #define M_DECAY_TIME -100 86 87 int mallopt(int, int) __INTRODUCED_IN(26); 88 89 __END_DECLS 90 91 #endif /* LIBC_INCLUDE_MALLOC_H_ */ 92
