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Diffstat (limited to 'thirdparty/stb/stb_leakcheck.h')
| -rw-r--r-- | thirdparty/stb/stb_leakcheck.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/thirdparty/stb/stb_leakcheck.h b/thirdparty/stb/stb_leakcheck.h new file mode 100644 index 0000000..b8c8df1 --- /dev/null +++ b/thirdparty/stb/stb_leakcheck.h @@ -0,0 +1,186 @@ +// stb_leakcheck.h - v0.4 - quick & dirty malloc leak-checking - public domain +// LICENSE +// +// See end of file. + +#ifdef STB_LEAKCHECK_IMPLEMENTATION +#undef STB_LEAKCHECK_IMPLEMENTATION // don't implement more than once + +// if we've already included leakcheck before, undefine the macros +#ifdef malloc +#undef malloc +#undef free +#undef realloc +#endif + +#include <assert.h> +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <stddef.h> +typedef struct malloc_info stb_leakcheck_malloc_info; + +struct malloc_info +{ + const char *file; + int line; + size_t size; + stb_leakcheck_malloc_info *next,*prev; +}; + +static stb_leakcheck_malloc_info *mi_head; + +void *stb_leakcheck_malloc(size_t sz, const char *file, int line) +{ + stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) malloc(sz + sizeof(*mi)); + if (mi == NULL) return mi; + mi->file = file; + mi->line = line; + mi->next = mi_head; + if (mi_head) + mi->next->prev = mi; + mi->prev = NULL; + mi->size = (int) sz; + mi_head = mi; + return mi+1; +} + +void stb_leakcheck_free(void *ptr) +{ + if (ptr != NULL) { + stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) ptr - 1; + mi->size = ~mi->size; + #ifndef STB_LEAKCHECK_SHOWALL + if (mi->prev == NULL) { + assert(mi_head == mi); + mi_head = mi->next; + } else + mi->prev->next = mi->next; + if (mi->next) + mi->next->prev = mi->prev; + #endif + free(mi); + } +} + +void *stb_leakcheck_realloc(void *ptr, size_t sz, const char *file, int line) +{ + if (ptr == NULL) { + return stb_leakcheck_malloc(sz, file, line); + } else if (sz == 0) { + stb_leakcheck_free(ptr); + return NULL; + } else { + stb_leakcheck_malloc_info *mi = (stb_leakcheck_malloc_info *) ptr - 1; + if (sz <= mi->size) + return ptr; + else { + #ifdef STB_LEAKCHECK_REALLOC_PRESERVE_MALLOC_FILELINE + void *q = stb_leakcheck_malloc(sz, mi->file, mi->line); + #else + void *q = stb_leakcheck_malloc(sz, file, line); + #endif + if (q) { + memcpy(q, ptr, mi->size); + stb_leakcheck_free(ptr); + } + return q; + } + } +} + +static void stblkck_internal_print(const char *reason, const char *file, int line, size_t size, void *ptr) +{ +#if (defined(_MSC_VER) && _MSC_VER < 1900) /* 1900=VS 2015 */ || defined(__MINGW32__) + // Compilers that use the old MS C runtime library don't have %zd + // and the older ones don't even have %lld either... however, the old compilers + // without "long long" don't support 64-bit targets either, so here's the + // compromise: + #if defined(_MSC_VER) && _MSC_VER < 1400 // before VS 2005 + printf("%-6s: %s (%4d): %8d bytes at %p\n", reason, file, line, (int)size, ptr); + #else + printf("%-6s: %s (%4d): %8lld bytes at %p\n", reason, file, line, (long long)size, ptr); + #endif +#else + // Assume we have %zd on other targets. + printf("%-6s: %s (%4d): %zd bytes at %p\n", reason, file, line, size, ptr); +#endif +} + +void stb_leakcheck_dumpmem(void) +{ + stb_leakcheck_malloc_info *mi = mi_head; + while (mi) { + if ((ptrdiff_t) mi->size >= 0) + stblkck_internal_print("LEAKED", mi->file, mi->line, mi->size, mi+1); + printf("LEAKED: %s (%4d): %8d bytes at %p\n", mi->file, mi->line, (int) mi->size, mi+1); + mi = mi->next; + } + #ifdef STB_LEAKCHECK_SHOWALL + mi = mi_head; + while (mi) { + if ((ptrdiff_t) mi->size < 0) + stblkck_internal_print("FREED", mi->file, mi->line, ~mi->size, mi+1); + printf("FREED : %s (%4d): %8d bytes at %p\n", mi->file, mi->line, (int) ~mi->size, mi+1); + mi = mi->next; + } + #endif +} +#endif // STB_LEAKCHECK_IMPLEMENTATION + +#ifndef INCLUDE_STB_LEAKCHECK_H +#define INCLUDE_STB_LEAKCHECK_H + +#define malloc(sz) stb_leakcheck_malloc(sz, __FILE__, __LINE__) +#define free(p) stb_leakcheck_free(p) +#define realloc(p,sz) stb_leakcheck_realloc(p,sz, __FILE__, __LINE__) + +extern void * stb_leakcheck_malloc(size_t sz, const char *file, int line); +extern void * stb_leakcheck_realloc(void *ptr, size_t sz, const char *file, int line); +extern void stb_leakcheck_free(void *ptr); +extern void stb_leakcheck_dumpmem(void); + +#endif // INCLUDE_STB_LEAKCHECK_H + + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ |