From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
"Jeff King" <peff@peff.net>,
"Carlo Marcelo Arenas Belón" <carenas@gmail.com>
Subject: Re: [PATCH 05/10] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode
Date: Wed, 10 Feb 2021 11:38:55 +0100 (CET) [thread overview]
Message-ID: <nycvar.QRO.7.76.6.2102101135390.29765@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <20210204210556.25242-6-avarab@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1677 bytes --]
Hi Ævar,
On Thu, 4 Feb 2021, Ævar Arnfjörð Bjarmason wrote:
> Add optional printing of PCREv2 allocations to stderr for a developer
> who manually changes the GREP_PCRE2_DEBUG_MALLOC definition to
> "1".
Maybe clarify in the oneline that this is not an environment variable, but
a Makefile knob? I had to read all the way to the diff to understand that
aspect.
Otherwise, the patch series so far looks really fine to me.
Thanks,
Dscho
>
> This will be referenced a subsequent commit, and is generally useful
> to manually see what's going on with PCREv2 allocations while working
> on that code.
>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
> grep.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/grep.c b/grep.c
> index f96d86c929..7d262a23d8 100644
> --- a/grep.c
> +++ b/grep.c
> @@ -42,15 +42,25 @@ static struct grep_opt grep_defaults = {
>
> #ifdef USE_LIBPCRE2
> static pcre2_general_context *pcre2_global_context;
> +#define GREP_PCRE2_DEBUG_MALLOC 0
>
> static void *pcre2_malloc(PCRE2_SIZE size, MAYBE_UNUSED void *memory_data)
> {
> void *pointer = malloc(size);
> +#if GREP_PCRE2_DEBUG_MALLOC
> + static int count = 1;
> + fprintf(stderr, "PCRE2:%p -> #%02d: alloc(%lu)\n", pointer, count++, size);
> +#endif
> return pointer;
> }
>
> static void pcre2_free(void *pointer, MAYBE_UNUSED void *memory_data)
> {
> +#if GREP_PCRE2_DEBUG_MALLOC
> + static int count = 1;
> + if (pointer)
> + fprintf(stderr, "PCRE2:%p -> #%02d: free()\n", pointer, count++);
> +#endif
> free(pointer);
> }
> #endif
> --
> 2.30.0.284.gd98b1dd5eaa7
>
>
next prev parent reply other threads:[~2021-02-10 10:44 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 12:06 [PATCH 0/3] Revive 'pcre2-chartables-leakfix' Johannes Schindelin via GitGitGadget
2019-10-16 12:06 ` [PATCH 1/3] grep: make PCRE1 aware of custom allocator Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:06 ` [PATCH 2/3] grep: make PCRE2 " Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:06 ` [PATCH 3/3] grep: avoid leak of chartables in PCRE2 Johannes Schindelin via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 0/3] Revive 'pcre2-chartables-leakfix' Johannes Schindelin via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 1/3] grep: make PCRE1 aware of custom allocator Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 2/3] grep: make PCRE2 " Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-18 1:38 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 00/10] grep/pcre2: memory allocation fixes Ævar Arnfjörð Bjarmason
2021-02-10 21:34 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 " Ævar Arnfjörð Bjarmason
2021-03-04 0:34 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 01/10] grep/pcre2: drop needless assignment + assert() on opt->pcre2 Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 02/10] grep/pcre2: drop needless assignment to NULL Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 03/10] grep/pcre2: correct reference to grep_init() in comment Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 04/10] grep/pcre2: prepare to add debugging to pcre2_malloc() Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 05/10] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 06/10] grep/pcre2: use compile-time PCREv2 version test Ævar Arnfjörð Bjarmason
2021-03-04 0:14 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 07/10] grep/pcre2: use pcre2_maketables_free() function Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 08/10] grep/pcre2: actually make pcre2 use custom allocator Ævar Arnfjörð Bjarmason
2021-03-04 0:24 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 09/10] grep/pcre2: move back to thread-only PCREv2 structures Ævar Arnfjörð Bjarmason
2021-03-04 0:27 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 10/10] grep/pcre2: move definitions of pcre2_{malloc,free} Ævar Arnfjörð Bjarmason
2021-03-04 0:28 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 01/10] grep/pcre2: drop needless assignment + assert() on opt->pcre2 Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 02/10] grep/pcre2: drop needless assignment to NULL Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 03/10] grep/pcre2: correct reference to grep_init() in comment Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 04/10] grep/pcre2: prepare to add debugging to pcre2_malloc() Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 05/10] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode Ævar Arnfjörð Bjarmason
2021-02-10 10:38 ` Johannes Schindelin [this message]
2021-02-04 21:05 ` [PATCH 06/10] grep/pcre2: use compile-time PCREv2 version test Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 07/10] grep/pcre2: use pcre2_maketables_free() function Ævar Arnfjörð Bjarmason
2021-02-10 10:43 ` Johannes Schindelin
2021-03-04 0:16 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 08/10] grep/pcre2: actually make pcre2 use custom allocator Ævar Arnfjörð Bjarmason
2021-02-10 12:38 ` Johannes Schindelin
2021-02-04 21:05 ` [PATCH 09/10] grep/pcre2: move back to thread-only PCREv2 structures Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 10/10] grep/pcre2: move definitions of pcre2_{malloc,free} Ævar Arnfjörð Bjarmason
2021-02-10 12:40 ` Johannes Schindelin
2019-10-16 12:10 ` [PATCH v2 3/3] grep: avoid leak of chartables in PCRE2 Carlo Marcelo Arenas Belón via GitGitGadget
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