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From: Ammar Faizi <[email protected]>
To: Alviro Iskandar Setiawan <[email protected]>
Cc: Willy Tarreau <[email protected]>, "Paul E. McKenney" <[email protected]>,
	Nugraha <[email protected]>,
	Linux Kernel Mailing List <[email protected]>,
	GNU/Weeb Mailing List <[email protected]>
Subject: Re: [RFC PATCH v1 5/6] tools/nolibc/stdlib: Implement `malloc()`, `calloc()`, `realloc()` and `free()`
Date: Sun, 20 Mar 2022 23:10:14 +0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAOG64qMoDjLer_OgRn2edGLMLMVfA5Lv3CZSU2VeOkgzPWNVUA@mail.gmail.com>

On 3/20/22 10:50 PM, Alviro Iskandar Setiawan wrote:
> This better be simplified like this, so only have 1 malloc() call that
> applies to both branches.
> 
>    void *realloc(void *old_ptr, size_t new_size)
>    {
>           struct nolibc_heap *heap;
>           void *ret;
> 
>           ret = malloc(new_size);
>           if (__builtin_expect(!ret, 0))
>                   return NULL;
> 
>           if (!old_ptr)
>                   return ret;
> 
>           heap = container_of(old_ptr, struct nolibc_heap, user_p);
>           memcpy(ret, heap->user_p, heap->len);
>           munmap(heap, heap->len);
>           return ret;
>    }

That looks better, will take this for the v2. Thanks!

-- 
Ammar Faizi

  reply	other threads:[~2022-03-20 16:10 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-20  9:37 [RFC PATCH v1 0/6] Add dynamic memory allocator support for nolibc Ammar Faizi
2022-03-20  9:37 ` [RFC PATCH v1 1/6] tools/nolibc: x86-64: Update System V ABI document link Ammar Faizi
2022-03-20  9:37 ` [RFC PATCH v1 2/6] tools/nolibc: Make the entry point not weak for clang Ammar Faizi
2022-03-20 19:16   ` Willy Tarreau
2022-03-21 11:38     ` Ammar Faizi
2022-03-21 17:27       ` Nick Desaulniers
2022-03-20  9:37 ` [RFC PATCH v1 3/6] tools/nolibc: i386: Implement syscall with 6 arguments Ammar Faizi
2022-03-20 10:33   ` Alviro Iskandar Setiawan
2022-03-20 10:42     ` Alviro Iskandar Setiawan
2022-03-20 15:09       ` Ammar Faizi
2022-03-20 13:10   ` David Laight
2022-03-20 14:01     ` Willy Tarreau
2022-03-20 15:04     ` Ammar Faizi
2022-03-20 18:22       ` David Laight
2022-03-20  9:37 ` [RFC PATCH v1 4/6] tools/nolibc/sys: Implement `mmap()` and `munmap()` Ammar Faizi
2022-03-20  9:37 ` [RFC PATCH v1 5/6] tools/nolibc/stdlib: Implement `malloc()`, `calloc()`, `realloc()` and `free()` Ammar Faizi
2022-03-20 15:50   ` Alviro Iskandar Setiawan
2022-03-20 16:10     ` Ammar Faizi [this message]
2022-03-20 16:16   ` Willy Tarreau
2022-03-20 16:36     ` Ammar Faizi
2022-03-20 16:46       ` Willy Tarreau
2022-03-20  9:37 ` [RFC PATCH v1 6/6] tools/include/string: Implement `strdup()` and `strndup()` Ammar Faizi
2022-03-20 15:55   ` Alviro Iskandar Setiawan
2022-03-20 16:10     ` Ammar Faizi
2022-03-21  7:53   ` Willy Tarreau
2022-03-21  8:16     ` Alviro Iskandar Setiawan
2022-03-21  8:51       ` Willy Tarreau
2022-03-21 11:36     ` Ammar Faizi
2022-03-21 11:43       ` Willy Tarreau

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