From owner-svn-src-all@freebsd.org Sun Oct 4 16:33:43 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1655742CC32; Sun, 4 Oct 2020 16:33:43 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4C48S66sBWz3g6j; Sun, 4 Oct 2020 16:33:42 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id CE92E272C9; Sun, 4 Oct 2020 16:33:42 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 094GXgeE044464; Sun, 4 Oct 2020 16:33:42 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 094GXg4l044462; Sun, 4 Oct 2020 16:33:42 GMT (envelope-from kib@FreeBSD.org) Message-Id: <202010041633.094GXg4l044462@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Sun, 4 Oct 2020 16:33:42 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r366429 - in head/sys: kern sys X-SVN-Group: head X-SVN-Commit-Author: kib X-SVN-Commit-Paths: in head/sys: kern sys X-SVN-Commit-Revision: 366429 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Oct 2020 16:33:43 -0000 Author: kib Date: Sun Oct 4 16:33:42 2020 New Revision: 366429 URL: https://svnweb.freebsd.org/changeset/base/366429 Log: Add sig_intr(9). It gives the answer would the thread sleep according to current state of signals and suspensions. Of course the answer is racy and allows for false-negatives (no sleep when signal is delivered after process lock is dropped). Also the answer might change due to signal rescheduling among threads in multi-threaded process. Still it is the best approximation I can provide, to answering the question was the thread interrupted. Reviewed by: markj Tested by: pho, rmacklem Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D26628 Modified: head/sys/kern/kern_sig.c head/sys/sys/signalvar.h Modified: head/sys/kern/kern_sig.c ============================================================================== --- head/sys/kern/kern_sig.c Sun Oct 4 16:30:05 2020 (r366428) +++ head/sys/kern/kern_sig.c Sun Oct 4 16:33:42 2020 (r366429) @@ -3204,6 +3204,24 @@ sig_ast_needsigchk(struct thread *td) return (ret); } +int +sig_intr(void) +{ + struct thread *td; + struct proc *p; + int ret; + + td = curthread; + p = td->td_proc; + + PROC_LOCK(p); + ret = sig_ast_checksusp(td); + if (ret == 0) + ret = sig_ast_needsigchk(td); + PROC_UNLOCK(p); + return (ret); +} + void proc_wkilled(struct proc *p) { Modified: head/sys/sys/signalvar.h ============================================================================== --- head/sys/sys/signalvar.h Sun Oct 4 16:30:05 2020 (r366428) +++ head/sys/sys/signalvar.h Sun Oct 4 16:33:42 2020 (r366429) @@ -408,6 +408,7 @@ int sig_ffs(sigset_t *set); void sigfastblock_clear(struct thread *td); void sigfastblock_fetch(struct thread *td); void sigfastblock_setpend(struct thread *td, bool resched); +int sig_intr(void); void siginit(struct proc *p); void signotify(struct thread *td); void sigqueue_delete(struct sigqueue *queue, int sig);