Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1iOLLV-0002De-8U for pgsql-hackers@arkaria.postgresql.org; Sat, 26 Oct 2019 12:39:05 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1iOLKT-000293-TG for pgsql-hackers@arkaria.postgresql.org; Sat, 26 Oct 2019 12:38:01 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1iOLKS-00028v-Lu for pgsql-hackers@lists.postgresql.org; Sat, 26 Oct 2019 12:38:01 +0000 Received: from out4-smtp.messagingengine.com ([66.111.4.28]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1iOLKI-0006ZT-9j for pgsql-hackers@postgresql.org; Sat, 26 Oct 2019 12:37:56 +0000 Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id BF73A21E3E; Sat, 26 Oct 2019 08:37:48 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute7.internal (MEProxy); Sat, 26 Oct 2019 08:37:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=RMOqNT/v1shulE7f2ar/brQ9S62CyjPhC6CGruTgm UM=; b=jmVvjcAL3DfsFQfHwB3a/xCJlihEgMGtlT51vrEE7SF4UA9zm3+F7IfDR 6WH/WF+Jgy7Y69RFpKWAZFZjLyhdsc9ZbkOYfle0RG6SfULJ8PYCjmcrbwB4dTe5 6artYJifSUeHgAhhSw+xngV+Y9HF4Sj71cFk0fUKERs/1p0hE/IIkRlhfhZ6m20q 8rpBIB39qVJhCaZZ88RjUnVgZ1TT7n4TKfBwRHazn0ILuGid2tJ7yIv+cQqJUU7o L+9sP0NmWkjqfwlnSkLmff3Ef92M7nqNuC0MHTv5QPRTtNTqtU/WoL02H5Kt+whg IBKtasyT0srKuwHUvuGbinLvRLsfw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedufedrleehgdehiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefuhffvfhhokffffgggjggtgfesthejredttdefjeenucfhrhhomheprfgvthgv rhcugfhishgvnhhtrhgruhhtuceophgvthgvrhdrvghishgvnhhtrhgruhhtsedvnhguqh hurggurhgrnhhtrdgtohhmqeenucffohhmrghinhepvdhnughquhgrughrrghnthdrtgho mhenucfkphepleefrddvgedvrddugeejrdejleenucfrrghrrghmpehmrghilhhfrhhomh epphgvthgvrhdrvghishgvnhhtrhgruhhtsedvnhguqhhurggurhgrnhhtrdgtohhmnecu vehluhhsthgvrhfuihiivgeptd X-ME-Proxy: Received: from april.pezone.net (p5df2934f.dip0.t-ipconnect.de [93.242.147.79]) by mail.messagingengine.com (Postfix) with ESMTPA id 2FBF58005B; Sat, 26 Oct 2019 08:37:47 -0400 (EDT) Subject: Re: errbacktrace From: Peter Eisentraut To: Alvaro Herrera References: <20190927155001.GA24199@alvherre.pgsql> Cc: pgsql-hackers , Dmitry Dolgov <9erthalion6@gmail.com>, Thomas Munro Openpgp: preference=signencrypt Autocrypt: addr=peter.eisentraut@2ndquadrant.com; prefer-encrypt=mutual; keydata= xsFNBFUUt6kBEADZd9NNTBJbHmAXXJgPGOdd6Q73l80oifIVgn2tRxP9dYkCfTlo/yLqbKTl JNqTcyM6XrJDnB2sMEUGYCewYZXl+9C4bBJWyNqcEI1ae9u71vEq/fknFLArJ+2wN+f7QuRx Q8d94ZJAiJQ5g3fNk2HVeedCQCKP5dCzU+ZLt2dbsx1PDZLjTO9gf+JswWuGFb5wY5PZVM5V hq66Xk7ZJzHuARacza2RT7J2fkMmQBY+kr7L98Perb0GhafnlhXB0PvUB+N3xpmggMfwuhTu BngS/G/r3GvemxJuFxouw8xsMqrsfdksJXA2gLXYtwRCssdPV3PO0rlD9twqDo8URfIJ5fb6 1g/MV8aTOKjg3Q8MpJPtkwJqN4o3PvbwYdedeFnOVkkYAJdu/aX1v1BeCBDu7Hy3sF52scD3 pQbyQSl9vUDpTLarASAxNbAV0NRJE8dp4vfW6AH1ccryGiFqw/czPK/iN0+MT8wsjAW6WW4w hvjm5UPA1KTwi3ZT8eT5uycuH7QpuNk7LnGGXQ6KaRALFywzkr0A0V0AvFNa+l4wstMaXaB6 dmMXyF0/hfryqyOeu1gAdq4q0/PNC2dPgb/6uoh4eMjN6A5GXcprilhz5DulmsilY21hfSoU S64ODed96pKhprsOxjZiDRsN1QM5MwB+uwVWUNfsX7fIxE0BrwARAQABzSdQZXRlciBFaXNl bnRyYXV0IDxwZXRlckBlaXNlbnRyYXV0Lm9yZz7CwXoEEwEIACQCGwMFCwkIBwMFFQoJCAsF FgIDAQACHgECF4AFAlUUuKQCGQEACgkQoZ8SQ+xBJp8llw//RbGoXnF72FZTlOFsnNyxnWbF vViPCfdAlZl1GGK9OYCvV1dp/956HuhB0wpaGQHiBmQfOPJf/jLOPjXFYm2iEChEycrBChuE j4TSYemMp5BSPILYk9Uwd16kVD/+U6fQfK6H5pOhfBvbM6asMnmpY2wQuvktxHvaGlytFw84 EzFWNZtAZfxkw28w3AhIQkKe9hJanfyDL750RcbyEr8AAHty5IErrvS7tM5vQwIeh5BF26ND CyKPRdZgOgMpcwFfROKBDpAt052CgWIpNdhBdfIKlkCs4/ILxmC3rT/Mb/qZiHcoMMwEu6k+ T7vRAFZZAk62Yrr/U8/vUGKlzRZQoo86fyojCfI0ibCIc0z8rwCVY9P40G9wD9BTCZS/z8Vh jjpBlNnIKw2hM6hbxavKndCJjFFJD08rXrTyrLF/of18xD37vNdYooP9VATB5QjOWFRrscSZ 4a89e+to3m7YVnd4xdXwGp47dYusoax84C8tg1gZrH38ol9dPmnKX6GZrXeS7tH9k8VeUpJ8 HQbRThQRWAT936QpYbLConBmOtmbLmjQOGtiXPo1oK57X/7U/WBja5vWmm2q+Yxtt+3uHGVg DdDU4CJpXo4lX0v2n3QV5EBSW9hjdF3bNfl6GFBb1pPEhqNcMDUc7zkx/2uENdAdk/BnqMgH umip7b0pVfvOwU0EVRS3qQEQAJf6p0P7D+hMYUgCPkvgrcz6OJYsAYdUMUmokfqmkKwK0oJM ew8TNGM53ocKAgQGma5f10rwbZNPlpVPNRX5hwUmwVlcwSut0oE+JfUBH7mpysWvpF05RKIy q9RCoJZrAbXS7Tig56A1QD8IcM00rERZMcCOlI1+q9m4u9AOI+0LyGGSH+VvoyDHD/Jew4R2 TmPEF8Pu7lYiNYK88Q6u0kBkc+Tz3BNlyc6fi3HxnFfp0b75HLXPSTu2SwA/0Q31wHZXwrEU BR9KgSn/qbgy8ydPc97i82fhiFE3cbGexfPrQSMYmDGi+dcQ0s+AMQwC3XyMC0JkHpYUuFkR QdlIvaIhgFUUN2Vr4xF2ADaNTNFc4DYaiPHFAgHZw+3pZWqS4uIiWgJynrEaHw4F3QWU8/JB iyEWDhNq4WBrRA0u914TCCAoFOOKMnRdl8eJrRQKM/5/lXbHFjjlI/LDKhLRFsuQsnJJ3331 RjCzpHPZG5/p5KR1RHiAXa0p/DW5lXyq21hS3kjDlleoHqOxCN/cy0Jgz7qLDq1vZoCl67Sy RAH60c2Xu4may9SVltmot0OzWVHdrfS+85FQGp9580DaeLio7YMFKy2bfEvwQJ/c9xD2QPB+ oSb3V8ueSznXBG5+dyfOsZFRPxceA0wA2rSWZSjxLdKxvyGTj9vsCjaDu13rABEBAAHCwV8E GAEIAAkFAlUUt6kCGwwACgkQoZ8SQ+xBJp+HJhAAxmSTsC5y7p9Zu+nnLpucv/h88oEx985e qWeXzQiwM3pfRZS+PdTH9TyzHK0KOgKoAiubk0vt+BrT91D9d0G5kVQaTctAErGBoMkTaZJT XVEcNphiPzysdSqvprjojMp1y7rG8AP+Xd6m0rE1LRnkRRm8HyI8vdXsuLQPITGWXDLMjaNq AOV3BUnzkgtjMuIYw7SCr+12ZOb5dEKvaG4kjC4kaJ/TLbuBhVANcXkC90yp0AOZLs/cB1Dj OAXno/RUUruJ3r27a+pFv768UAi9QWcdw58yPxreMNMLqAgsS9oTHwHfGNWcB2dJ4UW+GMLJ hTf9TjQ2f+N/sIx5XMQ9pYw6CAJMK29qPx6/ZayrPxf22EXf0D3zTwIEZgwfSkynFVwV25L7 awQq60fifdMYheSxq7GbhpsixmcD+e161cCmLIt75YDt5bQ0B1yf7EmxG8n7pGZAOM6LoNsU fkSldba5XVwh8LuN5mK0nQBELGW6Os4TDq4REggLpfcvFC215zpuo0iCGnmE/Bns4nowqUSP u4tkWL+nxW4qgv8wo8HJ52jd79EJ8iqfIBoidBfy9AIUiEUApGQzWPu6yWcI8fY0rN5D+tc+ Yw1Zt6Mm+huYJpgCRsTcfzEcahnBn521CWcWvhW1ff3KFileFMtNmnBBhMncmRKHphtTKEpN 3jI= Organization: 2ndQuadrant Message-ID: Date: Sat, 26 Oct 2019 14:37:45 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 2019-09-30 20:16, Peter Eisentraut wrote: > On 2019-09-27 17:50, Alvaro Herrera wrote: >> On 2019-Sep-13, Alvaro Herrera wrote: >> >>> On 2019-Aug-20, Peter Eisentraut wrote: >>> >>>> The memory management of that seems too complicated. The "extra" >>>> mechanism of the check/assign hooks only supports one level of malloc. >>>> Using a List seems impossible. I don't know if you can safely do a >>>> malloc-ed array of malloc-ed strings either. >>> >>> Here's an idea -- have the check/assign hooks create a different >>> representation, which is a single guc_malloc'ed chunk that is made up of >>> every function name listed in the GUC, separated by \0. That can be >>> scanned at error time comparing the function name with each piece. >> >> Peter, would you like me to clean this up for commit, or do you prefer >> to keep authorship and get it done yourself? > > If you want to finish it using the idea from your previous message, > please feel free. I won't get to it this week. I hadn't realized that you had already attached a patch that implements your idea. It looks good to me. Maybe a small comment near check_backtrace_functions() why we're not using a regular list. Other than that, please go ahead with this. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services