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From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: david.marchand@redhat.com, bruce.richardson@intel.com,
	mb@smartsharesystems.com
Subject: [dpdk-dev] [PATCH v3 01/11] eal: explain argv behaviour during init
Date: Fri, 12 Mar 2021 19:17:10 +0100
Message-ID: <20210312181720.242252-2-thomas@monjalon.net> (raw)
In-Reply-To: <20210312181720.242252-1-thomas@monjalon.net>

After argument parsing done by rte_eal_init(),
the remaining arguments are to be parsed by the application
by progressing in the argv array.
In this context, the first string represented by argv[0] is still
the same program name as the original argv[0],
while the next strings are the application arguments.
This is because rte_eal_init() manipulates the argv array
after EAL parsing, before returning to the application.

This note was missing in the doxygen comment of the API.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
 lib/librte_eal/include/rte_eal.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_eal/include/rte_eal.h b/lib/librte_eal/include/rte_eal.h
index eaf6469e50..0cbeedb594 100644
--- a/lib/librte_eal/include/rte_eal.h
+++ b/lib/librte_eal/include/rte_eal.h
@@ -76,6 +76,8 @@ int rte_eal_iopl_init(void);
  * @param argv
  *   An array of strings.  The contents of the array, as well as the strings
  *   which are pointed to by the array, may be modified by this function.
+ *   The program name pointer argv[0] is copied into the last parsed argv
+ *   so that argv[0] is still the same after deducing the parsed arguments.
  * @return
  *   - On success, the number of parsed arguments, which is greater or
  *     equal to zero. After the call to rte_eal_init(),
-- 
2.30.1


  reply	other threads:[~2021-03-12 18:17 UTC|newest]

Thread overview: 121+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09 23:31 [dpdk-dev] [PATCH 00/11] improve options help Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 01/11] eal: explain argv behaviour during init Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 02/11] eal: improve options usage text Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 03/11] eal: use macros for help option Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 04/11] eal: move private log functions Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 05/11] eal: introduce maximum log level macro Thomas Monjalon
2021-03-10 12:46   ` Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 06/11] eal: catch invalid log level number Thomas Monjalon
2021-03-10 12:19   ` Bruce Richardson
2021-03-10 12:33     ` Thomas Monjalon
2021-03-10 13:26       ` Bruce Richardson
2021-03-10 13:35         ` Thomas Monjalon
2021-03-10 16:35           ` Morten Brørup
2021-03-10 16:52           ` Bruce Richardson
2021-03-10 15:16     ` Stephen Hemminger
2021-03-09 23:31 ` [dpdk-dev] [PATCH 07/11] eal: add log level help Thomas Monjalon
2021-03-09 23:31 ` [dpdk-dev] [PATCH 08/11] app: fix exit messages Thomas Monjalon
2021-03-10  7:10   ` Ori Kam
2021-03-10  9:23   ` Wisam Monther
2021-03-09 23:31 ` [dpdk-dev] [PATCH 09/11] app: hook in EAL usage help Thomas Monjalon
2021-03-10  9:25   ` Wisam Monther
2021-03-09 23:31 ` [dpdk-dev] [PATCH 10/11] app/regex: fix usage text Thomas Monjalon
2021-03-10  7:08   ` Ori Kam
2021-03-09 23:31 ` [dpdk-dev] [PATCH 11/11] app/testpmd: " Thomas Monjalon
2021-03-12 19:09   ` Ajit Khaparde
2021-03-10  0:45 ` [dpdk-dev] [PATCH 00/11] improve options help Stephen Hemminger
2021-03-10 13:28 ` [dpdk-dev] [PATCH v2 " Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 01/11] eal: explain argv behaviour during init Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 02/11] eal: improve options usage text Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 03/11] eal: use macros for help option Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 04/11] eal: move private log functions Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 05/11] eal: introduce maximum log level macro Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 06/11] eal: catch invalid log level number Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 07/11] eal: add log level help Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 08/11] app: fix exit messages Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 09/11] app: hook in EAL usage help Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 10/11] app/regex: fix usage text Thomas Monjalon
2021-03-10 13:28   ` [dpdk-dev] [PATCH v2 11/11] app/testpmd: " Thomas Monjalon
2021-03-12 18:17 ` [dpdk-dev] [PATCH v3 00/11] improve options help Thomas Monjalon
2021-03-12 18:17   ` Thomas Monjalon [this message]
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 02/11] eal: improve options usage text Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 03/11] eal: use macros for help option Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 04/11] eal: move private log functions Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 05/11] eal: introduce maximum log level macro Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 06/11] eal: catch invalid log level number Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 07/11] eal: add log level help Thomas Monjalon
2021-03-15 10:19     ` Kinsella, Ray
2021-03-15 10:31       ` Bruce Richardson
2021-03-15 10:42         ` Kinsella, Ray
2021-03-15 10:52           ` Thomas Monjalon
2021-03-15 15:59             ` Stephen Hemminger
2021-03-15 17:01               ` Kinsella, Ray
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 08/11] app: fix exit messages Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 09/11] app: hook in EAL usage help Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 10/11] app/regex: fix usage text Thomas Monjalon
2021-03-12 18:17   ` [dpdk-dev] [PATCH v3 11/11] app/testpmd: " Thomas Monjalon
2021-03-19  8:59     ` Li, Xiaoyun
2021-03-19  9:29       ` Thomas Monjalon
2021-03-15  9:40   ` [dpdk-dev] [PATCH v3 00/11] improve options help Bruce Richardson
2021-03-15 10:47     ` Andrew Rybchenko
2021-03-21 22:31 ` [dpdk-dev] [PATCH v4 " Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 01/11] eal: explain argv behaviour during init Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 02/11] eal: improve options usage text Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 03/11] eal: use macros for help option Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 04/11] eal: move private log functions Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 05/11] eal: introduce maximum log level macro Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 06/11] eal: catch invalid log level number Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 07/11] eal: add log level help Thomas Monjalon
2021-03-23 13:37     ` David Marchand
2021-03-23 15:10       ` Thomas Monjalon
2021-03-23 18:18         ` David Marchand
2021-03-23 18:41           ` Thomas Monjalon
2021-03-24 13:41             ` David Marchand
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 08/11] app: fix exit messages Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 09/11] app: hook in EAL usage help Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 10/11] app/regex: fix usage text Thomas Monjalon
2021-03-21 22:31   ` [dpdk-dev] [PATCH v4 11/11] app/testpmd: " Thomas Monjalon
2021-03-22  1:45     ` Li, Xiaoyun
2021-03-22  8:27     ` Jens Freimann
2021-03-22  9:05       ` Bing Zhao
2021-03-24 15:03   ` [dpdk-dev] [PATCH v4 00/11] improve options help David Marchand
2021-03-24 16:55     ` Thomas Monjalon
2021-04-05 19:29 ` [dpdk-dev] [PATCH v5 0/4] log level enhancements Thomas Monjalon
2021-04-05 19:29   ` [dpdk-dev] [PATCH v5 1/4] log: move private functions Thomas Monjalon
2021-04-06 11:28     ` David Marchand
2021-04-06 12:08       ` Thomas Monjalon
2021-04-05 19:29   ` [dpdk-dev] [PATCH v5 2/4] log: introduce macro for maximum level Thomas Monjalon
2021-04-05 19:29   ` [dpdk-dev] [PATCH v5 3/4] log: catch invalid level option number Thomas Monjalon
2021-04-05 19:30   ` [dpdk-dev] [PATCH v5 4/4] log: add option argument help Thomas Monjalon
2021-04-06 13:11   ` [dpdk-dev] [PATCH v6 0/4] log level enhancements Thomas Monjalon
2021-04-06 13:11     ` [dpdk-dev] [PATCH v6 1/4] log: move private functions Thomas Monjalon
2021-04-06 13:11     ` [dpdk-dev] [PATCH v6 2/4] log: introduce macro for maximum level Thomas Monjalon
2021-04-06 14:32       ` David Marchand
2021-04-06 13:11     ` [dpdk-dev] [PATCH v6 3/4] log: catch invalid level option number Thomas Monjalon
2021-04-06 14:35       ` David Marchand
2021-04-06 13:11     ` [dpdk-dev] [PATCH v6 4/4] log: add option argument help Thomas Monjalon
2021-04-06 14:28       ` David Marchand
2021-04-06 14:58         ` Thomas Monjalon
2021-04-06 16:04       ` Thomas Monjalon
2021-04-06 16:35         ` David Marchand
2021-04-08 16:47   ` [dpdk-dev] [PATCH v7 0/4] log level enhancements Thomas Monjalon
2021-04-08 16:47     ` [dpdk-dev] [PATCH v7 1/4] log: move private functions Thomas Monjalon
2021-04-08 16:47     ` [dpdk-dev] [PATCH v7 2/4] log: introduce macro for maximum level Thomas Monjalon
2021-04-08 16:47     ` [dpdk-dev] [PATCH v7 3/4] log: catch invalid level option number Thomas Monjalon
2021-04-08 16:47     ` [dpdk-dev] [PATCH v7 4/4] log: add option argument help Thomas Monjalon
2021-04-09  9:31       ` David Marchand
2021-04-13 16:55       ` Kinsella, Ray
2021-04-09 10:55     ` [dpdk-dev] [PATCH v7 0/4] log level enhancements David Marchand
2021-04-05 19:33 ` [dpdk-dev] [PATCH v5 0/3] cleanup exit and usage messages in apps Thomas Monjalon
2021-04-05 19:33   ` [dpdk-dev] [PATCH v5 1/3] app: fix exit messages Thomas Monjalon
2021-04-05 19:33   ` [dpdk-dev] [PATCH v5 2/3] app/regex: fix usage text Thomas Monjalon
2021-04-05 19:33   ` [dpdk-dev] [PATCH v5 3/3] app/testpmd: " Thomas Monjalon
2021-04-09 12:31   ` [dpdk-dev] [PATCH v5 0/3] cleanup exit and usage messages in apps David Marchand
2021-04-05 19:39 ` [dpdk-dev] [PATCH v5 0/4] improve options help Thomas Monjalon
2021-04-05 19:39   ` [dpdk-dev] [PATCH v5 1/4] eal: explain argv behaviour during init Thomas Monjalon
2021-04-05 19:39   ` [dpdk-dev] [PATCH v5 2/4] eal: improve options usage text Thomas Monjalon
2021-04-05 19:39   ` [dpdk-dev] [PATCH v5 3/4] eal: use macros for help option Thomas Monjalon
2021-04-05 19:39   ` [dpdk-dev] [PATCH v5 4/4] app: hook in EAL usage help Thomas Monjalon
2021-04-06 13:32     ` Jerin Jacob
2021-04-06 14:05       ` Thomas Monjalon
2021-04-06 14:13         ` Jerin Jacob

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