diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/util/p_debug_mem.c | 71 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_double_list.h | 8 |
2 files changed, 68 insertions, 11 deletions
diff --git a/src/gallium/auxiliary/util/p_debug_mem.c b/src/gallium/auxiliary/util/p_debug_mem.c index 97ec9c5b392..aba69c02946 100644 --- a/src/gallium/auxiliary/util/p_debug_mem.c +++ b/src/gallium/auxiliary/util/p_debug_mem.c @@ -73,6 +73,25 @@ static struct list_head list = { &list, &list }; static unsigned long last_no = 0; +static INLINE struct debug_memory_header * +header_from_data(void *data) +{ + if(data) + return (struct debug_memory_header *)((char *)data - sizeof(struct debug_memory_header)); + else + return NULL; +} + +static INLINE void * +data_from_header(struct debug_memory_header *hdr) +{ + if(hdr) + return (void *)((char *)hdr + sizeof(struct debug_memory_header)); + else + return NULL; +} + + void * debug_malloc(const char *file, unsigned line, const char *function, size_t size) @@ -92,7 +111,7 @@ debug_malloc(const char *file, unsigned line, const char *function, LIST_ADDTAIL(&hdr->head, &list); - return (void *)((char *)hdr + sizeof(*hdr)); + return data_from_header(hdr); } void @@ -104,7 +123,7 @@ debug_free(const char *file, unsigned line, const char *function, if(!ptr) return; - hdr = (struct debug_memory_header *)((char *)ptr - sizeof(*hdr)); + hdr = header_from_data(ptr); if(hdr->magic != DEBUG_MEMORY_MAGIC) { debug_printf("%s:%u:%s: freeing bad or corrupted memory %p\n", file, line, function, @@ -133,16 +152,46 @@ void * debug_realloc(const char *file, unsigned line, const char *function, void *old_ptr, size_t old_size, size_t new_size ) { - void *new_ptr = NULL; - - if (new_size != 0) { - new_ptr = debug_malloc( file, line, function, new_size ); - - if( new_ptr && old_ptr ) - memcpy( new_ptr, old_ptr, old_size ); + struct debug_memory_header *old_hdr, *new_hdr; + void *new_ptr; + + if(!old_ptr) + return debug_malloc( file, line, function, new_size ); + + if(!new_size) { + debug_free( file, line, function, old_ptr ); + return NULL; } + + old_hdr = header_from_data(old_ptr); + if(old_hdr->magic != DEBUG_MEMORY_MAGIC) { + debug_printf("%s:%u:%s: reallocating bad or corrupted memory %p\n", + file, line, function, + old_ptr); + debug_assert(0); + return NULL; + } + + /* alloc new */ + new_hdr = real_malloc(sizeof(*new_hdr) + new_size); + if(!new_hdr) + return NULL; + new_hdr->no = old_hdr->no; + new_hdr->file = old_hdr->file; + new_hdr->line = old_hdr->line; + new_hdr->function = old_hdr->function; + new_hdr->size = new_size; + new_hdr->magic = DEBUG_MEMORY_MAGIC; + LIST_REPLACE(&old_hdr->head, &new_hdr->head); + + /* copy data */ + new_ptr = data_from_header(new_hdr); + memcpy( new_ptr, old_ptr, old_size < new_size ? old_size : new_size ); + + /* free old */ + old_hdr->magic = 0; + real_free(old_hdr); - debug_free( file, line, function, old_ptr ); return new_ptr; } @@ -162,7 +211,7 @@ debug_memory_end(unsigned long start_no) struct debug_memory_header *hdr; void *ptr; hdr = LIST_ENTRY(struct debug_memory_header, entry, head); - ptr = (void *)((char *)hdr + sizeof(*hdr)); + ptr = data_from_header(hdr); if(start_no <= hdr->no && hdr->no < last_no || last_no < start_no && (hdr->no < last_no || start_no <= hdr->no)) debug_printf("%s:%u:%s: %u bytes at %p not freed\n", diff --git a/src/gallium/auxiliary/util/u_double_list.h b/src/gallium/auxiliary/util/u_double_list.h index 8cb10c98206..d108d92e52b 100644 --- a/src/gallium/auxiliary/util/u_double_list.h +++ b/src/gallium/auxiliary/util/u_double_list.h @@ -70,6 +70,14 @@ struct list_head (__list)->prev = (__item); \ } while(0) +#define LIST_REPLACE(__from, __to) \ + do { \ + (__to)->prev = (__from)->prev; \ + (__to)->next = (__from)->next; \ + (__from)->next->prev = (__to); \ + (__from)->prev->next = (__to); \ + } while (0) + #define LIST_DEL(__item) \ do { \ (__item)->prev->next = (__item)->next; \ |