diff options
Diffstat (limited to '1.4.23-rc4/main/threadstorage.c')
| -rw-r--r-- | 1.4.23-rc4/main/threadstorage.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/1.4.23-rc4/main/threadstorage.c b/1.4.23-rc4/main/threadstorage.c deleted file mode 100644 index 0bad38981..000000000 --- a/1.4.23-rc4/main/threadstorage.c +++ /dev/null @@ -1,245 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * Kevin P. Fleming <kpfleming@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * - * \brief Debugging support for thread-local-storage objects - * - * \author Kevin P. Fleming <kpfleming@digium.com> - */ - -#include "asterisk.h" - -#if defined(DEBUG_THREADLOCALS) - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "asterisk/logger.h" -#include "asterisk/strings.h" -#include "asterisk/utils.h" -#include "asterisk/threadstorage.h" -#include "asterisk/linkedlists.h" -#include "asterisk/cli.h" - -struct tls_object { - void *key; - size_t size; - const char *file; - const char *function; - unsigned int line; - pthread_t thread; - AST_LIST_ENTRY(tls_object) entry; -}; - -static AST_LIST_HEAD_NOLOCK_STATIC(tls_objects, tls_object); - -/* Allow direct use of pthread_mutex_t and friends */ -#undef pthread_mutex_t -#undef pthread_mutex_lock -#undef pthread_mutex_unlock -#undef pthread_mutex_init -#undef pthread_mutex_destroy - -/*! - * \brief lock for the tls_objects list - * - * \note We can not use an ast_mutex_t for this. The reason is that this - * lock is used within the context of thread-local data destructors, - * and the ast_mutex_* API uses thread-local data. Allocating more - * thread-local data at that point just causes a memory leak. - */ -static pthread_mutex_t threadstoragelock; - -void __ast_threadstorage_object_add(void *key, size_t len, const char *file, const char *function, unsigned int line) -{ - struct tls_object *to; - - if (!(to = ast_calloc(1, sizeof(*to)))) - return; - - to->key = key; - to->size = len; - to->file = file; - to->function = function; - to->line = line; - to->thread = pthread_self(); - - pthread_mutex_lock(&threadstoragelock); - AST_LIST_INSERT_TAIL(&tls_objects, to, entry); - pthread_mutex_unlock(&threadstoragelock); -} - -void __ast_threadstorage_object_remove(void *key) -{ - struct tls_object *to; - - pthread_mutex_lock(&threadstoragelock); - AST_LIST_TRAVERSE_SAFE_BEGIN(&tls_objects, to, entry) { - if (to->key == key) { - AST_LIST_REMOVE_CURRENT(&tls_objects, entry); - break; - } - } - AST_LIST_TRAVERSE_SAFE_END; - pthread_mutex_unlock(&threadstoragelock); - if (to) - free(to); -} - -void __ast_threadstorage_object_replace(void *key_old, void *key_new, size_t len) -{ - struct tls_object *to; - - pthread_mutex_lock(&threadstoragelock); - AST_LIST_TRAVERSE_SAFE_BEGIN(&tls_objects, to, entry) { - if (to->key == key_old) { - to->key = key_new; - to->size = len; - break; - } - } - AST_LIST_TRAVERSE_SAFE_END; - pthread_mutex_unlock(&threadstoragelock); -} - -static int handle_show_allocations(int fd, int argc, char *argv[]) -{ - char *fn = NULL; - size_t len = 0; - unsigned int count = 0; - struct tls_object *to; - - if (argc > 3) - fn = argv[3]; - - pthread_mutex_lock(&threadstoragelock); - - AST_LIST_TRAVERSE(&tls_objects, to, entry) { - if (fn && strcasecmp(to->file, fn)) - continue; - - ast_cli(fd, "%10d bytes allocated in %20s at line %5d of %25s (thread %p)\n", - (int) to->size, to->function, to->line, to->file, (void *) to->thread); - len += to->size; - count++; - } - - pthread_mutex_unlock(&threadstoragelock); - - ast_cli(fd, "%10d bytes allocated in %d allocation%s\n", (int) len, count, count > 1 ? "s" : ""); - - return RESULT_SUCCESS; -} - -static int handle_show_summary(int fd, int argc, char *argv[]) -{ - char *fn = NULL; - size_t len = 0; - unsigned int count = 0; - struct tls_object *to; - struct file { - const char *name; - size_t len; - unsigned int count; - AST_LIST_ENTRY(file) entry; - } *file; - AST_LIST_HEAD_NOLOCK_STATIC(file_summary, file); - - if (argc > 3) - fn = argv[3]; - - pthread_mutex_lock(&threadstoragelock); - - AST_LIST_TRAVERSE(&tls_objects, to, entry) { - if (fn && strcasecmp(to->file, fn)) - continue; - - AST_LIST_TRAVERSE(&file_summary, file, entry) { - if ((!fn && (file->name == to->file)) || (fn && (file->name == to->function))) - break; - } - - if (!file) { - file = alloca(sizeof(*file)); - memset(file, 0, sizeof(*file)); - file->name = fn ? to->function : to->file; - AST_LIST_INSERT_TAIL(&file_summary, file, entry); - } - - file->len += to->size; - file->count++; - } - - pthread_mutex_unlock(&threadstoragelock); - - AST_LIST_TRAVERSE(&file_summary, file, entry) { - len += file->len; - count += file->count; - if (fn) { - ast_cli(fd, "%10d bytes in %d allocation%ss in function %s\n", - (int) file->len, file->count, file->count > 1 ? "s" : "", file->name); - } else { - ast_cli(fd, "%10d bytes in %d allocation%s in file %s\n", - (int) file->len, file->count, file->count > 1 ? "s" : "", file->name); - } - } - - ast_cli(fd, "%10d bytes allocated in %d allocation%s\n", (int) len, count, count > 1 ? "s" : ""); - - return RESULT_SUCCESS; -} - -static struct ast_cli_entry cli[] = { - { - .cmda = { "threadstorage", "show", "allocations", NULL }, - .handler = handle_show_allocations, - .summary = "Display outstanding thread local storage allocations", - .usage = - "Usage: threadstorage show allocations [<file>]\n" - " Dumps a list of all thread-specific memory allocations,\n" - "optionally limited to those from a specific file\n", - }, - { - .cmda = { "threadstorage", "show", "summary", NULL }, - .handler = handle_show_summary, - .summary = "Summarize outstanding memory allocations", - .usage = - "Usage: threadstorage show summary [<file>]\n" - " Summarizes thread-specific memory allocations by file, or optionally\n" - "by function, if a file is specified\n", - }, -}; - -void threadstorage_init(void) -{ - pthread_mutex_init(&threadstoragelock, NULL); - ast_cli_register_multiple(cli, sizeof(cli) / sizeof(cli[0])); -} - -#else /* !defined(DEBUG_THREADLOCALS) */ - -void threadstorage_init(void) -{ -} - -#endif /* !defined(DEBUG_THREADLOCALS) */ - |