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| 1 | +/* |
| 2 | + * Copyright (C) the libgit2 contributors. All rights reserved. |
| 3 | + * |
| 4 | + * This file is part of libgit2, distributed under the GNU GPL v2 with |
| 5 | + * a Linking Exception. For full terms see the included COPYING file. |
| 6 | + */ |
| 7 | + |
| 8 | +#include "win32_leakcheck.h" |
| 9 | + |
| 10 | +#if defined(GIT_WIN32_LEAKCHECK) |
| 11 | + |
| 12 | +#include "win32/w32_leakcheck.h" |
| 13 | + |
| 14 | +static void *leakcheck_malloc(size_t len, const char *file, int line) |
| 15 | +{ |
| 16 | + void *ptr = _malloc_dbg(len, _NORMAL_BLOCK, git_win32_leakcheck_stacktrace(1,file), line); |
| 17 | + if (!ptr) git_error_set_oom(); |
| 18 | + return ptr; |
| 19 | +} |
| 20 | + |
| 21 | +static void *leakcheck_calloc(size_t nelem, size_t elsize, const char *file, int line) |
| 22 | +{ |
| 23 | + void *ptr = _calloc_dbg(nelem, elsize, _NORMAL_BLOCK, git_win32_leakcheck_stacktrace(1,file), line); |
| 24 | + if (!ptr) git_error_set_oom(); |
| 25 | + return ptr; |
| 26 | +} |
| 27 | + |
| 28 | +static char *leakcheck_strdup(const char *str, const char *file, int line) |
| 29 | +{ |
| 30 | + char *ptr = _strdup_dbg(str, _NORMAL_BLOCK, git_win32_leakcheck_stacktrace(1,file), line); |
| 31 | + if (!ptr) git_error_set_oom(); |
| 32 | + return ptr; |
| 33 | +} |
| 34 | + |
| 35 | +static char *leakcheck_strndup(const char *str, size_t n, const char *file, int line) |
| 36 | +{ |
| 37 | + size_t length = 0, alloclength; |
| 38 | + char *ptr; |
| 39 | + |
| 40 | + length = p_strnlen(str, n); |
| 41 | + |
| 42 | + if (GIT_ADD_SIZET_OVERFLOW(&alloclength, length, 1) || |
| 43 | + !(ptr = leakcheck_malloc(alloclength, file, line))) |
| 44 | + return NULL; |
| 45 | + |
| 46 | + if (length) |
| 47 | + memcpy(ptr, str, length); |
| 48 | + |
| 49 | + ptr[length] = '\0'; |
| 50 | + |
| 51 | + return ptr; |
| 52 | +} |
| 53 | + |
| 54 | +static char *leakcheck_substrdup(const char *start, size_t n, const char *file, int line) |
| 55 | +{ |
| 56 | + char *ptr; |
| 57 | + size_t alloclen; |
| 58 | + |
| 59 | + if (GIT_ADD_SIZET_OVERFLOW(&alloclen, n, 1) || |
| 60 | + !(ptr = leakcheck_malloc(alloclen, file, line))) |
| 61 | + return NULL; |
| 62 | + |
| 63 | + memcpy(ptr, start, n); |
| 64 | + ptr[n] = '\0'; |
| 65 | + return ptr; |
| 66 | +} |
| 67 | + |
| 68 | +static void *leakcheck_realloc(void *ptr, size_t size, const char *file, int line) |
| 69 | +{ |
| 70 | + void *new_ptr = _realloc_dbg(ptr, size, _NORMAL_BLOCK, git_win32_leakcheck_stacktrace(1,file), line); |
| 71 | + if (!new_ptr) git_error_set_oom(); |
| 72 | + return new_ptr; |
| 73 | +} |
| 74 | + |
| 75 | +static void *leakcheck_reallocarray(void *ptr, size_t nelem, size_t elsize, const char *file, int line) |
| 76 | +{ |
| 77 | + size_t newsize; |
| 78 | + |
| 79 | + if (GIT_MULTIPLY_SIZET_OVERFLOW(&newsize, nelem, elsize)) |
| 80 | + return NULL; |
| 81 | + |
| 82 | + return leakcheck_realloc(ptr, newsize, file, line); |
| 83 | +} |
| 84 | + |
| 85 | +static void *leakcheck_mallocarray(size_t nelem, size_t elsize, const char *file, int line) |
| 86 | +{ |
| 87 | + return leakcheck_reallocarray(NULL, nelem, elsize, file, line); |
| 88 | +} |
| 89 | + |
| 90 | +static void leakcheck_free(void *ptr) |
| 91 | +{ |
| 92 | + free(ptr); |
| 93 | +} |
| 94 | + |
| 95 | +int git_win32_leakcheck_init_allocator(git_allocator *allocator) |
| 96 | +{ |
| 97 | + allocator->gmalloc = leakcheck_malloc; |
| 98 | + allocator->gcalloc = leakcheck_calloc; |
| 99 | + allocator->gstrdup = leakcheck_strdup; |
| 100 | + allocator->gstrndup = leakcheck_strndup; |
| 101 | + allocator->gsubstrdup = leakcheck_substrdup; |
| 102 | + allocator->grealloc = leakcheck_realloc; |
| 103 | + allocator->greallocarray = leakcheck_reallocarray; |
| 104 | + allocator->gmallocarray = leakcheck_mallocarray; |
| 105 | + allocator->gfree = leakcheck_free; |
| 106 | + return 0; |
| 107 | +} |
| 108 | + |
| 109 | +#else |
| 110 | + |
| 111 | +int git_win32_leakcheck_init_allocator(git_allocator *allocator) |
| 112 | +{ |
| 113 | + GIT_UNUSED(allocator); |
| 114 | + git_error_set(GIT_EINVALID, "leakcheck memory allocator not available"); |
| 115 | + return -1; |
| 116 | +} |
| 117 | + |
| 118 | +#endif |
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