From nobody Tue Aug 30 15:49:21 2022 X-Original-To: freebsd-dtrace@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4MHBZK5xbkz4Zlsn for ; Tue, 30 Aug 2022 15:49:29 +0000 (UTC) (envelope-from mpp302@gmail.com) Received: from mail-ed1-f46.google.com (mail-ed1-f46.google.com [209.85.208.46]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4MHBZK11YFz40dW for ; Tue, 30 Aug 2022 15:49:29 +0000 (UTC) (envelope-from mpp302@gmail.com) Received: by mail-ed1-f46.google.com with SMTP id t5so14755820edc.11 for ; Tue, 30 Aug 2022 08:49:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:date:message-id:subject:mime-version:from:x-gm-message-state :from:to:cc:subject:date; bh=+sztJGQrxkvoO7fGXSf/fjJpULNNu3UDimmuZECdHFU=; b=Haa8NuFejw9hm0ftVKE3G7vvowFsa8Bqz3HxoLvIJZfFHJlxXDHz+7Nw90XV/V9m5z QqQioCkTzpctMko0mnn7QsmfLc9dfFURCJDL/IT1QdmDcCTVPv/QXTlaYppZDN4TvFAW P0knLYJSZRPqc0Hvg2x6wXQUjhEIuO7tLqJMtBnrU6Ehjp6Dch0AT/TlQC5zpB0jSEFi Qv64j/F3+SqkHVETGTWVyBAKZw2kefW/kbKx9oTH8zeyNJjKf9sBgdDpGVqBNLljmiTF 2CE2ll7OsnSiChuMBGyf/xoh64Pvuk2iSoLIlLvVhW1do72E/Z+h8g+1tm96u/74RCWD B3RA== X-Gm-Message-State: ACgBeo0Pnq4kHkXC3ncZMnetrlA9wKft4eL3zGO0iyXdxw+vh84G7laV E+VSEbWj3S5GQy72MQ4k3YyvgNjoJ8qXg1I9 X-Google-Smtp-Source: AA6agR5b5yr7a7AwAj4kKax5phU5xLo6sQfHRHmGRDHv8KUrmF6N0XA0SDBMfpsGwcozYlDrWK7xQA== X-Received: by 2002:a05:6402:3484:b0:448:cc83:2bff with SMTP id v4-20020a056402348400b00448cc832bffmr2832494edc.65.1661874567772; Tue, 30 Aug 2022 08:49:27 -0700 (PDT) Received: from smtpclient.apple ([2a02:8109:8680:1304:b0ff:f3f4:ad0d:90b9]) by smtp.gmail.com with ESMTPSA id f12-20020a17090660cc00b0073ddb2eff27sm5990272ejk.167.2022.08.30.08.49.27 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 30 Aug 2022 08:49:27 -0700 (PDT) From: Mateusz Piotrowski <0mp@FreeBSD.org> Content-Type: multipart/alternative; boundary="Apple-Mail=_21A9CCA2-6BC2-43C1-B484-2EE36926FCF8" List-Id: A discussion list for developers working on DTrace in FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-dtrace List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-dtrace@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.1\)) Subject: Converting int to a string in DTrace Message-Id: <317C65CC-5BF0-422D-80E9-4340CD241569@FreeBSD.org> Date: Tue, 30 Aug 2022 17:49:21 +0200 To: freebsd-dtrace@freebsd.org X-Mailer: Apple Mail (2.3696.120.41.1.1) X-Rspamd-Queue-Id: 4MHBZK11YFz40dW X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of mpp302@gmail.com designates 209.85.208.46 as permitted sender) smtp.mailfrom=mpp302@gmail.com X-Spamd-Result: default: False [-2.50 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; NEURAL_HAM_SHORT(-1.00)[-0.999]; MV_CASE(0.50)[]; FORGED_SENDER(0.30)[0mp@FreeBSD.org,mpp302@gmail.com]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17:c]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[freebsd.org]; PREVIOUSLY_DELIVERED(0.00)[freebsd-dtrace@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[209.85.208.46:from]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; ARC_NA(0.00)[]; TO_DOM_EQ_FROM_DOM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_NONE(0.00)[]; MLMMJ_DEST(0.00)[freebsd-dtrace@freebsd.org]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MID_RHS_MATCH_FROM(0.00)[]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; FROM_NEQ_ENVFROM(0.00)[0mp@FreeBSD.org,mpp302@gmail.com]; RWL_MAILSPIKE_POSSIBLE(0.00)[209.85.208.46:from] X-ThisMailContainsUnwantedMimeParts: N --Apple-Mail=_21A9CCA2-6BC2-43C1-B484-2EE36926FCF8 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hello everyone, Is it possible to convert an int to a string in DTrace? E.g., I'd like the following script to work (it's an example from = dtrace_io(4), but with device unit number added): #!/usr/sbin/dtrace -s #pragma D option quiet io:::start { this->unit_number =3D args[1]->unit_number >=3D 0 ? = (string)args[1]->unit_number : ""; @[args[1]->device_name, this->unit_number, execname, pid] =3D = sum(args[0]->bio_bcount); } END { printf("%10s%-3s %20s %10s %15s\n", "DEVICE", "", "APP", "PID", = "BYTES"); printa("%10s%-3s %20s %10d %15@d\n", @); } (Of course, the `(string)` cast does not work here because it's just not = how DTrace works.) Best, Mateusz= --Apple-Mail=_21A9CCA2-6BC2-43C1-B484-2EE36926FCF8 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Hello= everyone,

Is it = possible to convert an int to a string in DTrace?
E.g., I'd like the following script to = work (it's an example from dtrace_io(4), but with device unit number = added):

#!/usr/sbin/dtrace -s

#pragma D option quiet

io:::start
{
    =     this->unit_number =3D args[1]->unit_number >=3D 0 = ? (string)args[1]->unit_number : "";
        @[args[1]->device_name, = this->unit_number, execname, pid] =3D = sum(args[0]->bio_bcount);
}

END
{
        printf("%10s%-3s %20s %10s = %15s\n", "DEVICE", "", "APP", "PID", "BYTES");
        printa("%10s%-3s = %20s %10d %15@d\n", @);
}

(Of course, the `(string)` cast = does not work here because it's just not how DTrace works.)

Best,
Mateusz
= --Apple-Mail=_21A9CCA2-6BC2-43C1-B484-2EE36926FCF8--