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 // Remove the workaround once b/37423073 is fixed. 27 #if defined(__clang__) && !__has_attribute(alloc_size) 28 #define __BIONIC_ALLOC_SIZE(...) 29 #else 30 #define __BIONIC_ALLOC_SIZE(...) __attribute__((__alloc_size__(__VA_ARGS__))) 31 #endif 32 33 void* malloc(size_t __byte_count) __mallocfunc __BIONIC_ALLOC_SIZE(1) __wur; 34 void* calloc(size_t __item_count, size_t __item_size) __mallocfunc __BIONIC_ALLOC_SIZE(1,2) __wur; 35 void* realloc(void* __ptr, size_t __byte_count) __BIONIC_ALLOC_SIZE(2) __wur; 36 void free(void* __ptr); 37 38 void* memalign(size_t __alignment, size_t __byte_count) __mallocfunc __BIONIC_ALLOC_SIZE(2) __wur; 39 size_t malloc_usable_size(const void* __ptr) __INTRODUCED_IN(17); 40 41 #ifndef STRUCT_MALLINFO_DECLARED 42 #define STRUCT_MALLINFO_DECLARED 1 43 struct mallinfo { 44 size_t arena; /* Total number of non-mmapped bytes currently allocated from OS. */ 45 size_t ordblks; /* Number of free chunks. */ 46 size_t smblks; /* (Unused.) */ 47 size_t hblks; /* (Unused.) */ 48 size_t hblkhd; /* Total number of bytes in mmapped regions. */ 49 size_t usmblks; /* Maximum total allocated space; greater than total if trimming has occurred. */ 50 size_t fsmblks; /* (Unused.) */ 51 size_t uordblks; /* Total allocated space (normal or mmapped.) */ 52 size_t fordblks; /* Total free space. */ 53 size_t keepcost; /* Upper bound on number of bytes releasable by malloc_trim. */ 54 }; 55 #endif /* STRUCT_MALLINFO_DECLARED */ 56 57 struct mallinfo mallinfo(void); 58 59 /* 60 * XML structure for malloc_info(3) is in the following format: 61 * 62 * <malloc version="jemalloc-1"> 63 * <heap nr="INT"> 64 * <allocated-large>INT</allocated-large> 65 * <allocated-huge>INT</allocated-huge> 66 * <allocated-bins>INT</allocated-bins> 67 * <bins-total>INT</bins-total> 68 * <bin nr="INT"> 69 * <allocated>INT</allocated> 70 * <nmalloc>INT</nmalloc> 71 * <ndalloc>INT</ndalloc> 72 * </bin> 73 * <!-- more bins --> 74 * </heap> 75 * <!-- more heaps --> 76 * </malloc> 77 */ 78 int malloc_info(int __must_be_zero, FILE* __fp) __INTRODUCED_IN(23); 79 80 /* mallopt options */ 81 #define M_DECAY_TIME -100 82 int mallopt(int __option, int __value) __INTRODUCED_IN(26); 83 84 /* 85 * Memory Allocation Hooks 86 */ 87 extern void* (*volatile __malloc_hook)(size_t, const void*) __INTRODUCED_IN(28); 88 extern void* (*volatile __realloc_hook)(void*, size_t, const void*) __INTRODUCED_IN(28); 89 extern void (*volatile __free_hook)(void*, const void*) __INTRODUCED_IN(28); 90 extern void* (*volatile __memalign_hook)(size_t, size_t, const void*) __INTRODUCED_IN(28); 91 92 __END_DECLS 93 94 #endif /* LIBC_INCLUDE_MALLOC_H_ */ 95
