From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1851) id EDAB1385AC3C; Tue, 9 Aug 2022 11:03:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EDAB1385AC3C Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Martin Liska To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/marxin/heads/jobserver-refactoring)] lto: support --jobserver-style=fifo for recent GNU make X-Act-Checkin: gcc X-Git-Author: Martin Liska X-Git-Refname: refs/users/marxin/heads/jobserver-refactoring X-Git-Oldrev: 0d28a20a3b8e13d576398d4ab68ee7301fa4c1ba X-Git-Newrev: 34af8dad1c496dc03d8c5376aee209b2fcadc7b5 Message-Id: <20220809110326.EDAB1385AC3C@sourceware.org> Date: Tue, 9 Aug 2022 11:03:26 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Aug 2022 11:03:27 -0000 https://gcc.gnu.org/g:34af8dad1c496dc03d8c5376aee209b2fcadc7b5 commit 34af8dad1c496dc03d8c5376aee209b2fcadc7b5 Author: Martin Liska Date: Mon Aug 8 15:22:44 2022 +0200 lto: support --jobserver-style=fifo for recent GNU make gcc/ChangeLog: * jobserver.h (jobserver_info::jobserver_info): Parse FIFO format of --jobserver-auth. Diff: --- gcc/jobserver.h | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/gcc/jobserver.h b/gcc/jobserver.h index 85453dd3c79..856e326ddfc 100644 --- a/gcc/jobserver.h +++ b/gcc/jobserver.h @@ -39,14 +39,22 @@ struct jobserver_info int rfd = -1; /* File descriptor for writing used for jobserver communication. */ int wfd = -1; + /* Named pipe path. */ + string pipe_path = ""; /* Return true if jobserver is active. */ bool is_active = false; }; jobserver_info::jobserver_info () { + /* Traditionally, GNU make uses opened pipes for jobserver-auth, + e.g. --jobserver-auth=3,4. + Starting with GNU make 4.4, one can use --jobserver-style=fifo + and then named pipe is used: --jobserver-auth=fifo:/tmp/hcsparta. */ + /* Detect jobserver and drop it if it's not working. */ string js_needle = "--jobserver-auth="; + string fifo_prefix = "fifo:"; const char *envval = getenv ("MAKEFLAGS"); if (envval != NULL) @@ -55,8 +63,15 @@ jobserver_info::jobserver_info () size_t n = makeflags.rfind (js_needle); if (n != string::npos) { - if (sscanf (makeflags.c_str () + n + js_needle.size (), - "%d,%d", &rfd, &wfd) == 2 + string ending = makeflags.substr (n + js_needle.size ()); + if (ending.find (fifo_prefix) == 0) + { + ending = ending.substr (fifo_prefix.size ()); + pipe_path = ending.substr (0, ending.find (' ')); + is_active = true; + } + else if (sscanf (makeflags.c_str () + n + js_needle.size (), + "%d,%d", &rfd, &wfd) == 2 && rfd > 0 && wfd > 0 && is_valid_fd (rfd)