| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "malloc_info.h" |
| |
| #include <errno.h> |
| #include "private/bionic_macros.h" |
| |
| class __LIBC_HIDDEN__ Elem { |
| public: |
| // name must be valid throughout lifetime of the object. |
| explicit Elem(FILE* fp, const char* name, |
| const char* attr_fmt = nullptr, ...) { |
| this->fp = fp; |
| this->name = name; |
| |
| fprintf(fp, "<%s", name); |
| if (attr_fmt != nullptr) { |
| va_list args; |
| va_start(args, attr_fmt); |
| fputc(' ', fp); |
| vfprintf(fp, attr_fmt, args); |
| va_end(args); |
| } |
| fputc('>', fp); |
| } |
| |
| ~Elem() noexcept { |
| fprintf(fp, "</%s>", name); |
| } |
| |
| void contents(const char* fmt, ...) { |
| va_list args; |
| va_start(args, fmt); |
| vfprintf(fp, fmt, args); |
| va_end(args); |
| } |
| |
| private: |
| FILE* fp; |
| const char* name; |
| |
| DISALLOW_COPY_AND_ASSIGN(Elem); |
| }; |
| |
| int malloc_info(int options, FILE* fp) { |
| if (options != 0) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| Elem root(fp, "malloc", "version=\"jemalloc-1\""); |
| |
| // Dump all of the large allocations in the arenas. |
| for (size_t i = 0; i < __mallinfo_narenas(); i++) { |
| struct mallinfo mi = __mallinfo_arena_info(i); |
| if (mi.hblkhd != 0) { |
| Elem arena_elem(fp, "heap", "nr=\"%d\"", i); |
| { |
| Elem(fp, "allocated-large").contents("%zu", mi.ordblks); |
| Elem(fp, "allocated-huge").contents("%zu", mi.uordblks); |
| Elem(fp, "allocated-bins").contents("%zu", mi.fsmblks); |
| |
| size_t total = 0; |
| for (size_t j = 0; j < __mallinfo_nbins(); j++) { |
| struct mallinfo mi = __mallinfo_bin_info(i, j); |
| if (mi.ordblks != 0) { |
| Elem bin_elem(fp, "bin", "nr=\"%d\"", j); |
| Elem(fp, "allocated").contents("%zu", mi.ordblks); |
| Elem(fp, "nmalloc").contents("%zu", mi.uordblks); |
| Elem(fp, "ndalloc").contents("%zu", mi.fordblks); |
| total += mi.ordblks; |
| } |
| } |
| Elem(fp, "bins-total").contents("%zu", total); |
| } |
| } |
| } |
| |
| return 0; |
| } |