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 /* 21 * Declaration of malloc routines. Bionic uses dlmalloc (see 22 * upstream-dlmalloc) but doesn't directly include it here to keep the 23 * defined malloc.h interface small. 24 */ 25 #include <sys/cdefs.h> 26 #include <stddef.h> 27 28 __BEGIN_DECLS 29 30 #if !defined(__clang__) || __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ < 5) 31 extern void* malloc(size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(1))); 32 extern void* calloc(size_t item_count, size_t item_size) __mallocfunc __wur __attribute__((alloc_size(1,2))); 33 extern void* realloc(void* p, size_t byte_count) __wur __attribute__((alloc_size(2))); 34 extern void* memalign(size_t alignment, size_t byte_count) __mallocfunc __wur __attribute__((alloc_size(2))); 35 #else 36 extern void* malloc(size_t byte_count) __mallocfunc __wur; 37 extern void* calloc(size_t item_count, size_t item_size) __mallocfunc __wur; 38 extern void* realloc(void* p, size_t byte_count) __wur; 39 extern void* memalign(size_t alignment, size_t byte_count) __mallocfunc __wur; 40 #endif 41 42 extern void free(void* p); 43 extern size_t malloc_usable_size(const void* p); 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 extern struct mallinfo mallinfo(void); 62 63 __END_DECLS 64 65 #endif /* LIBC_INCLUDE_MALLOC_H_ */ 66
