static void ft_mem_table_set( FT_MemTable table, FT_Byte* address, FT_ULong size ) { FT_MemNode *pnode, node; if ( table ) { pnode = ft_mem_table_get_nodep( table, address ); node = *pnode; if ( node ) { if ( node->size < 0 ) { /* this block was already freed. This means that our memory is */ /* now completely corrupted! */ ft_mem_debug_panic( "memory heap corrupted (allocating freed block)" ); } else { /* this block was already allocated. This means that our memory */ /* is also corrupted! */ ft_mem_debug_panic( "memory heap corrupted (re-allocating allocated block)" ); } } /* we need to create a new node in this table */ node = (FT_MemNode)ft_mem_table_alloc( table, sizeof ( *node ) ); if ( node == NULL ) ft_mem_debug_panic( "not enough memory to run memory tests" ); node->address = address; node->size = size; node->alloc_file_name = table->file_name; node->alloc_line_no = table->line_no; node->free_file_name = NULL; node->free_line_no = 0; node->link = pnode[0]; pnode[0] = node; table->nodes++; table->alloc_total += size; table->alloc_current += size; if ( table->alloc_current > table->alloc_max ) table->alloc_max = table->alloc_current; if ( table->nodes * 3 < table->size || table->size * 3 < table->nodes ) ft_mem_table_resize( table ); } }
extern FT_Pointer ft_mem_debug_realloc( FT_Memory memory, FT_Long cur_size, FT_Long new_size, FT_Pointer block ) { FT_MemTable table = (FT_MemTable)memory->user; FT_MemNode node, *pnode; FT_Pointer new_block; const char* file_name = FT_FILENAME( table->file_name ); FT_Long line_no = table->line_no; /* the following is valid according to ANSI C */ #if 0 if ( block == NULL || cur_size == 0 ) ft_mem_debug_panic( "trying to reallocate NULL in (%s:%ld)", file_name, line_no ); #endif /* while the following is allowed in ANSI C also, we abort since */ /* such case should be handled by FreeType. */ if ( new_size <= 0 ) ft_mem_debug_panic( "trying to reallocate %p to size 0 (current is %ld) in (%s:%ld)", block, cur_size, file_name, line_no ); /* check `cur_size' value */ pnode = ft_mem_table_get_nodep( table, (FT_Byte*)block ); node = *pnode; if ( !node ) ft_mem_debug_panic( "trying to reallocate unknown block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size <= 0 ) ft_mem_debug_panic( "trying to reallocate freed block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size != cur_size ) ft_mem_debug_panic( "invalid ft_realloc request for %p. cur_size is " "%ld instead of %ld in (%s:%ld)", block, cur_size, node->size, file_name, line_no ); new_block = ft_mem_debug_alloc( memory, new_size ); if ( new_block == NULL ) return NULL; ft_memcpy( new_block, block, cur_size < new_size ? cur_size : new_size ); table->file_name = file_name; table->line_no = line_no; ft_mem_debug_free( memory, (FT_Byte*)block ); return new_block; }
extern FT_Pointer ft_mem_debug_realloc( FT_Memory memory, FT_Long cur_size, FT_Long new_size, FT_Pointer block ) { FT_MemTable table = (FT_MemTable)memory->user; FT_MemNode node, *pnode; FT_Pointer new_block; const char* file_name = FT_FILENAME( table->file_name ); FT_Long line_no = table->line_no; if ( block == NULL || cur_size == 0 ) ft_mem_debug_panic( "trying to reallocate NULL in (%s:%ld)", file_name, line_no ); if ( new_size <= 0 ) ft_mem_debug_panic( "trying to reallocate %p to size 0 (current is %ld) in (%s:%ld)", block, cur_size, file_name, line_no ); /* check 'cur_size' value */ pnode = ft_mem_table_get_nodep( table, (FT_Byte*)block ); node = *pnode; if ( !node ) ft_mem_debug_panic( "trying to reallocate unknown block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size <= 0 ) ft_mem_debug_panic( "trying to reallocate freed block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size != cur_size ) ft_mem_debug_panic( "invalid ft_realloc request for %p. cur_size is " "%ld instead of %ld in (%s:%ld)", block, cur_size, node->size, file_name, line_no ); new_block = ft_mem_debug_alloc( memory, new_size ); if ( new_block == NULL ) return NULL; ft_memcpy( new_block, block, cur_size < new_size ? cur_size : new_size ); table->file_name = file_name; table->line_no = line_no; ft_mem_debug_free( memory, (FT_Byte*)block ); return new_block; }
static void ft_mem_table_remove( FT_MemTable table, FT_Byte* address ) { if ( table ) { FT_MemNode *pnode, node; pnode = ft_mem_table_get_nodep( table, address ); node = *pnode; if ( node ) { if ( node->size < 0 ) ft_mem_debug_panic( "freeing memory block at %p more than once at (%s:%ld)\n" "block allocated at (%s:%ld) and released at (%s:%ld)", address, FT_FILENAME( table->file_name ), table->line_no, FT_FILENAME( node->alloc_file_name ), node->alloc_line_no, FT_FILENAME( node->free_file_name ), node->free_line_no ); /* we simply invert the node's size to indicate that the node */ /* was freed. We also change its contents. */ FT_MEM_SET( address, 0xF3, node->size ); table->alloc_current -= node->size; node->size = -node->size; node->free_file_name = table->file_name; node->free_line_no = table->line_no; } else ft_mem_debug_panic( "trying to free unknown block at %p in (%s:%ld)\n", address, FT_FILENAME( table->file_name ), table->line_no ); } }
extern FT_Pointer ft_mem_debug_realloc( FT_Memory memory, FT_Long cur_size, FT_Long new_size, FT_Pointer block ) { FT_MemTable table = (FT_MemTable)memory->user; FT_MemNode node, *pnode; FT_Pointer new_block; FT_Long delta; const char* file_name = FT_FILENAME( _ft_debug_file ); FT_Long line_no = _ft_debug_lineno; /* unlikely, but possible */ if ( new_size == cur_size ) return block; /* the following is valid according to ANSI C */ #if 0 if ( block == NULL || cur_size == 0 ) ft_mem_debug_panic( "trying to reallocate NULL in (%s:%ld)", file_name, line_no ); #endif /* while the following is allowed in ANSI C also, we abort since */ /* such case should be handled by FreeType. */ if ( new_size <= 0 ) ft_mem_debug_panic( "trying to reallocate %p to size 0 (current is %ld) in (%s:%ld)", block, cur_size, file_name, line_no ); /* check `cur_size' value */ pnode = ft_mem_table_get_nodep( table, (FT_Byte*)block ); node = *pnode; if ( !node ) ft_mem_debug_panic( "trying to reallocate unknown block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size <= 0 ) ft_mem_debug_panic( "trying to reallocate freed block at %p in (%s:%ld)", block, file_name, line_no ); if ( node->size != cur_size ) ft_mem_debug_panic( "invalid ft_realloc request for %p. cur_size is " "%ld instead of %ld in (%s:%ld)", block, cur_size, node->size, file_name, line_no ); /* return NULL if the maximum number of allocations was reached */ if ( table->bound_count && table->alloc_count >= table->alloc_count_max ) return NULL; delta = (FT_Long)( new_size - cur_size ); /* return NULL if this allocation would overflow the maximum heap size */ if ( delta > 0 && table->bound_total && table->alloc_current + (FT_ULong)delta > table->alloc_total_max ) return NULL; new_block = (FT_Byte *)ft_mem_table_alloc( table, new_size ); if ( new_block == NULL ) return NULL; ft_mem_table_set( table, (FT_Byte*)new_block, new_size, delta ); ft_memcpy( new_block, block, cur_size < new_size ? cur_size : new_size ); ft_mem_table_remove( table, (FT_Byte*)block, delta ); _ft_debug_file = "<unknown>"; _ft_debug_lineno = 0; if ( !table->keep_alive ) ft_mem_table_free( table, block ); return new_block; }
static void ft_mem_table_remove( FT_MemTable table, FT_Byte* address, FT_Long delta ) { if ( table ) { FT_MemNode *pnode, node; pnode = ft_mem_table_get_nodep( table, address ); node = *pnode; if ( node ) { FT_MemSource source; if ( node->size < 0 ) ft_mem_debug_panic( "freeing memory block at %p more than once at (%s:%ld)\n" "block allocated at (%s:%ld) and released at (%s:%ld)", address, FT_FILENAME( _ft_debug_file ), _ft_debug_lineno, FT_FILENAME( node->source->file_name ), node->source->line_no, FT_FILENAME( node->free_file_name ), node->free_line_no ); /* scramble the node's content for additional safety */ FT_MEM_SET( address, 0xF3, node->size ); if ( delta == 0 ) { source = node->source; source->cur_blocks--; source->cur_size -= node->size; table->alloc_current -= node->size; } if ( table->keep_alive ) { /* we simply invert the node's size to indicate that the node */ /* was freed. */ node->size = -node->size; node->free_file_name = _ft_debug_file; node->free_line_no = _ft_debug_lineno; } else { table->nodes--; *pnode = node->link; node->size = 0; node->source = NULL; ft_mem_table_free( table, node ); if ( table->nodes * 3 < table->size || table->size * 3 < table->nodes ) ft_mem_table_resize( table ); } } else ft_mem_debug_panic( "trying to free unknown block at %p in (%s:%ld)\n", address, FT_FILENAME( _ft_debug_file ), _ft_debug_lineno ); } }
static void ft_mem_table_set( FT_MemTable table, FT_Byte* address, FT_ULong size, FT_Long delta ) { FT_MemNode *pnode, node; if ( table ) { FT_MemSource source; pnode = ft_mem_table_get_nodep( table, address ); node = *pnode; if ( node ) { if ( node->size < 0 ) { /* This block was already freed. Our memory is now completely */ /* corrupted! */ /* This can only happen in keep-alive mode. */ ft_mem_debug_panic( "memory heap corrupted (allocating freed block)" ); } else { /* This block was already allocated. This means that our memory */ /* is also corrupted! */ ft_mem_debug_panic( "memory heap corrupted (re-allocating allocated block at" " %p, of size %ld)\n" "org=%s:%d new=%s:%d\n", node->address, node->size, FT_FILENAME( node->source->file_name ), node->source->line_no, FT_FILENAME( _ft_debug_file ), _ft_debug_lineno ); } } /* we need to create a new node in this table */ node = (FT_MemNode)ft_mem_table_alloc( table, sizeof ( *node ) ); if ( node == NULL ) ft_mem_debug_panic( "not enough memory to run memory tests" ); node->address = address; node->size = size; node->source = source = ft_mem_table_get_source( table ); if ( delta == 0 ) { /* this is an allocation */ source->all_blocks++; source->cur_blocks++; if ( source->cur_blocks > source->max_blocks ) source->max_blocks = source->cur_blocks; } if ( size > (FT_ULong)source->cur_max ) source->cur_max = size; if ( delta != 0 ) { /* we are growing or shrinking a reallocated block */ source->cur_size += delta; table->alloc_current += delta; } else { /* we are allocating a new block */ source->cur_size += size; table->alloc_current += size; } source->all_size += size; if ( source->cur_size > source->max_size ) source->max_size = source->cur_size; node->free_file_name = NULL; node->free_line_no = 0; node->link = pnode[0]; pnode[0] = node; table->nodes++; table->alloc_total += size; if ( table->alloc_current > table->alloc_max ) table->alloc_max = table->alloc_current; if ( table->nodes * 3 < table->size || table->size * 3 < table->nodes ) ft_mem_table_resize( table ); } }