From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752463AbbFNIUS (ORCPT ); Sun, 14 Jun 2015 04:20:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36557 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752316AbbFNIUG (ORCPT ); Sun, 14 Jun 2015 04:20:06 -0400 From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Adrian Hunter , Andi Kleen , David Ahern , Ingo Molnar , Namhyung Kim , Peter Zijlstra , Stephane Eranian Subject: [PATCH 02/30] perf tools: Add thread_map__(alloc|realloc) helpers Date: Sun, 14 Jun 2015 10:19:17 +0200 Message-Id: <1434269985-521-3-git-send-email-jolsa@kernel.org> In-Reply-To: <1434269985-521-1-git-send-email-jolsa@kernel.org> References: <1434269985-521-1-git-send-email-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to have 'struct thread_map' allocation on single place and can change it easily in following patch. Using alloc|realloc for static helpers, because thread_map__new is already used in public interface. Link: http://lkml.kernel.org/n/tip-05va5v9fmxvd5s3fm9vt93vt@git.kernel.org Signed-off-by: Jiri Olsa --- tools/perf/util/thread_map.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/thread_map.c b/tools/perf/util/thread_map.c index f93b9734735b..f4822bd03709 100644 --- a/tools/perf/util/thread_map.c +++ b/tools/perf/util/thread_map.c @@ -20,6 +20,15 @@ static int filter(const struct dirent *dir) return 1; } +static struct thread_map *thread_map__realloc(struct thread_map *map, int nr) +{ + size_t size = sizeof(*map) + sizeof(pid_t) * nr; + + return realloc(map, size); +} + +#define thread_map__alloc(__nr) thread_map__realloc(NULL, __nr) + struct thread_map *thread_map__new_by_pid(pid_t pid) { struct thread_map *threads; @@ -33,7 +42,7 @@ struct thread_map *thread_map__new_by_pid(pid_t pid) if (items <= 0) return NULL; - threads = malloc(sizeof(*threads) + sizeof(pid_t) * items); + threads = thread_map__alloc(items); if (threads != NULL) { for (i = 0; i < items; i++) threads->map[i] = atoi(namelist[i]->d_name); @@ -49,7 +58,7 @@ struct thread_map *thread_map__new_by_pid(pid_t pid) struct thread_map *thread_map__new_by_tid(pid_t tid) { - struct thread_map *threads = malloc(sizeof(*threads) + sizeof(pid_t)); + struct thread_map *threads = thread_map__alloc(1); if (threads != NULL) { threads->map[0] = tid; @@ -65,8 +74,8 @@ struct thread_map *thread_map__new_by_uid(uid_t uid) int max_threads = 32, items, i; char path[256]; struct dirent dirent, *next, **namelist = NULL; - struct thread_map *threads = malloc(sizeof(*threads) + - max_threads * sizeof(pid_t)); + struct thread_map *threads = thread_map__alloc(max_threads); + if (threads == NULL) goto out; @@ -185,8 +194,7 @@ static struct thread_map *thread_map__new_by_pid_str(const char *pid_str) goto out_free_threads; total_tasks += items; - nt = realloc(threads, (sizeof(*threads) + - sizeof(pid_t) * total_tasks)); + nt = thread_map__realloc(threads, total_tasks); if (nt == NULL) goto out_free_namelist; @@ -216,7 +224,7 @@ out_free_threads: struct thread_map *thread_map__new_dummy(void) { - struct thread_map *threads = malloc(sizeof(*threads) + sizeof(pid_t)); + struct thread_map *threads = thread_map__alloc(1); if (threads != NULL) { threads->map[0] = -1; @@ -253,7 +261,7 @@ static struct thread_map *thread_map__new_by_tid_str(const char *tid_str) continue; ntasks++; - nt = realloc(threads, sizeof(*threads) + sizeof(pid_t) * ntasks); + nt = thread_map__realloc(threads, ntasks); if (nt == NULL) goto out_free_threads; -- 1.9.3