From 4764795b3783ebf46a2993d5fc5a191e38188208 Mon Sep 17 00:00:00 2001 From: "Kevin P. Fleming" Date: Thu, 4 Jan 2007 23:18:36 +0000 Subject: Merged revisions 49553 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r49553 | kpfleming | 2007-01-04 16:51:01 -0600 (Thu, 04 Jan 2007) | 2 lines add support for tracking thread-local-storage objects that exist via 'threadstorage' CLI commands ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@49578 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- main/threadstorage.c | 227 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 main/threadstorage.c (limited to 'main/threadstorage.c') diff --git a/main/threadstorage.c b/main/threadstorage.c new file mode 100644 index 000000000..b4d38c045 --- /dev/null +++ b/main/threadstorage.c @@ -0,0 +1,227 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2005, Digium, Inc. + * + * Kevin P. Fleming + * + * 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 + */ + +#include "asterisk.h" + +#if defined(DEBUG_THREADLOCALS) + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include +#include +#include + +#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_STATIC(tls_objects, tls_object); + +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(sizeof(*to), 1))) + return; + + to->key = key; + to->size = len; + to->file = file; + to->function = function; + to->line = line; + to->thread = pthread_self(); + + AST_LIST_LOCK(&tls_objects); + AST_LIST_INSERT_TAIL(&tls_objects, to, entry); + AST_LIST_UNLOCK(&tls_objects); +} + +void __ast_threadstorage_object_remove(void *key) +{ + struct tls_object *to; + + AST_LIST_LOCK(&tls_objects); + 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; + AST_LIST_UNLOCK(&tls_objects); + if (to) + free(to); +} + +void __ast_threadstorage_object_replace(void *key_old, void *key_new, size_t len) +{ + struct tls_object *to; + + AST_LIST_LOCK(&tls_objects); + 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; + AST_LIST_UNLOCK(&tls_objects); +} + +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]; + + AST_LIST_LOCK(&tls_objects); + + 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++; + } + + AST_LIST_UNLOCK(&tls_objects); + + 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]; + + AST_LIST_LOCK(&tls_objects); + + 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++; + } + + AST_LIST_UNLOCK(&tls_objects); + + 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 []\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 []\n" + " Summarizes thread-specific memory allocations by file, or optionally\n" + "by function, if a file is specified\n", + }, +}; + +void threadstorage_init(void) +{ + ast_cli_register_multiple(cli, sizeof(cli) / sizeof(cli[0])); +} + +#else /* !defined(DEBUG_THREADLOCALS) */ + +void threadstorage_init(void) +{ +} + +#endif /* !defined(DEBUG_THREADLOCALS) */ + -- cgit v1.2.3