192 lines
6.7 KiB
C
192 lines
6.7 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "eo_ptr_indirection.h"
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extern Eina_Thread _efl_object_main_thread;
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//////////////////////////////////////////////////////////////////////////
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Eina_TLS _eo_table_data;
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Eo_Id_Data *_eo_table_data_shared = NULL;
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Eo_Id_Table_Data *_eo_table_data_shared_data = NULL;
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//////////////////////////////////////////////////////////////////////////
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void
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_eo_pointer_error(const Eo *obj_id, const char *func_name, const char *file, int line, const char *fmt, ...)
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{
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/* NOTE: this function exists to allow easy breakpoint on pointer errors */
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va_list args;
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va_start(args, fmt);
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eina_log_vprint(_eo_log_dom, EINA_LOG_LEVEL_ERR, file, func_name, line, fmt, args);
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va_end(args);
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_eo_log_obj_report((Eo_Id)obj_id, EINA_LOG_LEVEL_ERR, func_name, file, line);
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}
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static void
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_eo_obj_pointer_invalid(const Eo_Id obj_id,
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Eo_Id_Data *data,
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unsigned char domain,
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const char *func_name,
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const char *file,
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int line)
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{
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Eina_Thread thread = eina_thread_self();
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const char *tself = "main";
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const char *type = "object";
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const char *reason = "This ID has probably been deleted";
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char tbuf[128];
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if (obj_id & MASK_CLASS_TAG) type = "class";
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if (thread != _efl_object_main_thread)
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{
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snprintf(tbuf, sizeof(tbuf), "%p", (void *)thread);
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tself = tbuf;
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}
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if (!data->tables[(int)data->local_domain])
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reason = "This ID does not seem to belong to this thread";
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else if ((Efl_Id_Domain)domain == EFL_ID_DOMAIN_SHARED)
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reason = "This shared ID has probably been deleted";
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eina_log_print(_eo_log_dom, EINA_LOG_LEVEL_ERR,
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file, func_name, line,
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"Eo ID %p is not a valid %s. "
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"Current thread: %s. "
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"%s or this was never a valid %s ID. "
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"(domain=%i, current_domain=%i, local_domain=%i, "
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"available_domains=[%s %s %s %s], "
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"generation=%lx, id=%lx, ref=%i)",
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(void *)obj_id,
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type,
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tself,
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reason,
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type,
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(int)domain,
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(int)data->domain_stack[data->stack_top],
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(int)data->local_domain,
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(data->tables[0]) ? "0" : " ",
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(data->tables[1]) ? "1" : " ",
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(data->tables[2]) ? "2" : " ",
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(data->tables[3]) ? "3" : " ",
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(unsigned long)(obj_id & MASK_GENERATIONS),
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(unsigned long)(obj_id >> SHIFT_ENTRY_ID) & (MAX_ENTRY_ID | MAX_TABLE_ID | MAX_MID_TABLE_ID),
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(int)(obj_id >> REF_TAG_SHIFT) & 0x1);
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_eo_log_obj_report(obj_id, EINA_LOG_LEVEL_ERR, func_name, file, line);
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}
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_Eo_Object *
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_eo_obj_pointer_get(const Eo_Id obj_id, const char *func_name, const char *file, int line)
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{
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_Eo_Id_Entry *entry;
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Generation_Counter generation;
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Table_Index mid_table_id, table_id, entry_id;
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Eo_Id tag_bit;
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Eo_Id_Data *data;
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Eo_Id_Table_Data *tdata;
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unsigned char domain;
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// NULL objects will just be sensibly ignored. not worth complaining
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// every single time.
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data = _eo_table_data_get();
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EINA_PREFETCH(&(data->tables[0]));
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domain = (obj_id >> SHIFT_DOMAIN) & MASK_DOMAIN;
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tdata = _eo_table_data_table_get(data, domain);
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EINA_PREFETCH(&(tdata->cache.id));
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if (EINA_UNLIKELY(!tdata)) goto err;
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if (EINA_LIKELY(domain != EFL_ID_DOMAIN_SHARED))
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{
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if (obj_id == tdata->cache.id)
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return tdata->cache.object;
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mid_table_id = (obj_id >> SHIFT_MID_TABLE_ID) & MASK_MID_TABLE_ID;
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EINA_PREFETCH(&(tdata->eo_ids_tables[mid_table_id]));
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table_id = (obj_id >> SHIFT_TABLE_ID) & MASK_TABLE_ID;
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entry_id = (obj_id >> SHIFT_ENTRY_ID) & MASK_ENTRY_ID;
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generation = obj_id & MASK_GENERATIONS;
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// get tag bit to check later down below - pipelining
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tag_bit = (obj_id) & MASK_OBJ_TAG;
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if (!obj_id) goto err_null;
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else if (!tag_bit) goto err;
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// Check the validity of the entry
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if (tdata->eo_ids_tables[mid_table_id])
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{
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_Eo_Ids_Table *tab = TABLE_FROM_IDS;
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if (tab)
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{
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entry = &(tab->entries[entry_id]);
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if (entry->active && (entry->generation == generation))
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{
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// Cache the result of that lookup
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tdata->cache.object = entry->ptr;
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tdata->cache.id = obj_id;
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return entry->ptr;
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}
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}
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}
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goto err;
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}
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else
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{
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eina_lock_take(&(_eo_table_data_shared_data->obj_lock));
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if (obj_id == tdata->cache.id)
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// yes we return keeping the lock locked. thats why
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// you must call _eo_obj_pointer_done() wrapped
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// by EO_OBJ_DONE() to release
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return tdata->cache.object;
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mid_table_id = (obj_id >> SHIFT_MID_TABLE_ID) & MASK_MID_TABLE_ID;
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EINA_PREFETCH(&(tdata->eo_ids_tables[mid_table_id]));
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table_id = (obj_id >> SHIFT_TABLE_ID) & MASK_TABLE_ID;
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entry_id = (obj_id >> SHIFT_ENTRY_ID) & MASK_ENTRY_ID;
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generation = obj_id & MASK_GENERATIONS;
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// get tag bit to check later down below - pipelining
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tag_bit = (obj_id) & MASK_OBJ_TAG;
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if (!obj_id) goto err_shared_null;
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else if (!tag_bit) goto err_shared;
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// Check the validity of the entry
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if (tdata->eo_ids_tables[mid_table_id])
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{
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_Eo_Ids_Table *tab = TABLE_FROM_IDS;
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if (tab)
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{
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entry = &(tab->entries[entry_id]);
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if (entry->active && (entry->generation == generation))
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{
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// Cache the result of that lookup
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tdata->cache.object = entry->ptr;
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tdata->cache.id = obj_id;
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// yes we return keeping the lock locked. thats why
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// you must call _eo_obj_pointer_done() wrapped
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// by EO_OBJ_DONE() to release
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return entry->ptr;
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}
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}
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}
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goto err_shared;
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}
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err_shared_null:
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eina_lock_release(&(_eo_table_data_shared_data->obj_lock));
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err_null:
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eina_log_print(_eo_log_dom,
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EINA_LOG_LEVEL_DBG,
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file, func_name, line,
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"obj_id is NULL. Possibly unintended access?");
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return NULL;
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err_shared:
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eina_lock_release(&(_eo_table_data_shared_data->obj_lock));
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err:
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_eo_obj_pointer_invalid(obj_id, data, domain, func_name, file, line);
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return NULL;
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}
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