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GET /api/1.2/patches/2226307/?format=api
{ "id": 2226307, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2226307/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.7@forge-stage.sourceware.org/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.2/projects/17/?format=api", "name": "GNU Compiler Collection", "link_name": "gcc", "list_id": "gcc-patches.gcc.gnu.org", "list_email": "gcc-patches@gcc.gnu.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.7@forge-stage.sourceware.org>", "list_archive_url": null, "date": "2026-04-22T10:44:22", "name": "[v1,07/16] libstdc++: Simplify futex wrapper functions for atomic wait/notify", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "1dd4b1675c36634f6f5678295be58261d6dc425f", "submitter": { "id": 93210, "url": "http://patchwork.ozlabs.org/api/1.2/people/93210/?format=api", "name": "Jonathan Wakely via Sourceware Forge", "email": "forge-bot+redi@forge-stage.sourceware.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.7@forge-stage.sourceware.org/mbox/", "series": [ { "id": 500987, "url": "http://patchwork.ozlabs.org/api/1.2/series/500987/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500987", "date": "2026-04-22T10:44:17", "name": "atomic wait/notify ABI stabilization", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500987/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226307/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226307/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; helo=vm01.sourceware.org;\n envelope-from=gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org;\n receiver=patchwork.ozlabs.org)", "sourceware.org; dmarc=none (p=none dis=none)\n header.from=forge-stage.sourceware.org", "sourceware.org;\n spf=pass smtp.mailfrom=forge-stage.sourceware.org", "server2.sourceware.org;\n arc=none smtp.remote-ip=38.145.34.39" ], "Received": [ "from vm01.sourceware.org (vm01.sourceware.org\n [IPv6:2620:52:6:3111::32])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g0xhP64p5z1yD5\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 22 Apr 2026 21:24:37 +1000 (AEST)", "from vm01.sourceware.org (localhost [127.0.0.1])\n\tby sourceware.org (Postfix) with ESMTP id D9C7240A0CD5\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 22 Apr 2026 11:24:35 +0000 (GMT)", "from forge-stage.sourceware.org (vm08.sourceware.org [38.145.34.39])\n by sourceware.org (Postfix) with ESMTPS id 6C5214015EAE\n for <gcc-patches@gcc.gnu.org>; Wed, 22 Apr 2026 10:46:05 +0000 (GMT)", "from forge-stage.sourceware.org (localhost [IPv6:::1])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange x25519 server-signature ECDSA (prime256v1) server-digest SHA256)\n (No client certificate requested)\n by forge-stage.sourceware.org (Postfix) with ESMTPS id D73CA42BB5\n for <gcc-patches@gcc.gnu.org>; Wed, 22 Apr 2026 10:46:01 +0000 (UTC)" ], "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 sourceware.org D9C7240A0CD5", "OpenDKIM Filter v2.11.0 sourceware.org 6C5214015EAE" ], "DMARC-Filter": "OpenDMARC Filter v1.4.2 sourceware.org 6C5214015EAE", "ARC-Filter": "OpenARC Filter v1.0.0 sourceware.org 6C5214015EAE", "ARC-Seal": "i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1776854765; cv=none;\n b=jUTn9IA0oTBfJ7KrrD/5YOXUjP5cgQApQI+0kvsmw8mLSuu9xs8TGy4mBtyPF274VJ9y/WRkdyaePurTcPRmaeWg321j6iQa9yp8WHal22j5o9ZppD/3jvzYvsNQ9lLt4W8GGvf5PPJfLaPjWIJb0u+Sh2YyxRD+/4ujVkVqZDY=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1776854765; c=relaxed/simple;\n bh=9uEOxhADrbxZoSsJ+HachYw2xvmo2Ts9AkQvC6yeLHY=;\n h=From:Date:Subject:To:Message-ID;\n b=Gjvw4WzcRv1KAyTw9zQAUYZ6YpkvKzQ29hxd7zzaSy/rohYPO89w1mtNDp0vSX6apZEmkcNgU5LXZo7VIwQIgBWbeu308OFNZ/Amba9LSjGEMbeZKZRIIvjIKj4yQQG0znD+Sz7w5+f6VKEDpDm/FzKDQjdjIOVeFzMbqyHIbSg=", "ARC-Authentication-Results": "i=1; server2.sourceware.org", "From": "Jonathan Wakely via Sourceware Forge\n <forge-bot+redi@forge-stage.sourceware.org>", "Date": "Wed, 22 Apr 2026 10:44:22 +0000", "Subject": "[PATCH v1 07/16] libstdc++: Simplify futex wrapper functions for\n atomic wait/notify", "To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>", "Message-ID": "\n <bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.7@forge-stage.sourceware.org>", "X-Mailer": "batrachomyomachia", "X-Pull-Request-Organization": "gcc", "X-Pull-Request-Repository": "gcc-TEST", "X-Pull-Request": "https://forge.sourceware.org/gcc/gcc-TEST/pulls/31", "References": "\n <bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.0@forge-stage.sourceware.org>", "In-Reply-To": "\n <bmm.hhubrmqub2.gcc.gcc-TEST.redi.31.1.0@forge-stage.sourceware.org>", "X-Patch-URL": "\n https://forge.sourceware.org/redi/gcc/commit/5d795b478e99915b768db39d45c16cf91c9015bf", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Reply-To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>, redi@gcc.gnu.org", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "From: Jonathan Wakely <jwakely@redhat.com>\n\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/atomic_wait.h (__platform_wait): Change function\n\ttemplate to a normal function. The parameter is always\n\t__platform_wait_t* which is just int* for this implementation of\n\tthe function.\n\t(__platform_notify): Likewise.\n---\n libstdc++-v3/include/bits/atomic_wait.h | 40 ++++++++++++-------------\n 1 file changed, 20 insertions(+), 20 deletions(-)", "diff": "diff --git a/libstdc++-v3/include/bits/atomic_wait.h b/libstdc++-v3/include/bits/atomic_wait.h\nindex 725ea030245d..5fd00c22565b 100644\n--- a/libstdc++-v3/include/bits/atomic_wait.h\n+++ b/libstdc++-v3/include/bits/atomic_wait.h\n@@ -108,27 +108,27 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n __bitset_match_any = -1\n };\n \n- template<typename _Tp>\n- void\n- __platform_wait(const _Tp* __addr, __platform_wait_t __val) noexcept\n- {\n-\tauto __e = syscall (SYS_futex, static_cast<const void*>(__addr),\n-\t\t\t static_cast<int>(__futex_wait_flags::__wait_private),\n-\t\t\t __val, nullptr);\n-\tif (!__e || errno == EAGAIN)\n-\t return;\n-\tif (errno != EINTR)\n-\t __throw_system_error(errno);\n- }\n+ // If the futex *__addr is equal to __val, wait on the futex until woken.\n+ inline void\n+ __platform_wait(const int* __addr, int __val) noexcept\n+ {\n+ auto __e = syscall (SYS_futex, __addr,\n+\t\t\t static_cast<int>(__futex_wait_flags::__wait_private),\n+\t\t\t __val, nullptr);\n+ if (!__e || errno == EAGAIN)\n+\treturn;\n+ if (errno != EINTR)\n+\t__throw_system_error(errno);\n+ }\n \n- template<typename _Tp>\n- void\n- __platform_notify(const _Tp* __addr, bool __all) noexcept\n- {\n-\tsyscall (SYS_futex, static_cast<const void*>(__addr),\n-\t\t static_cast<int>(__futex_wait_flags::__wake_private),\n-\t\t __all ? INT_MAX : 1);\n- }\n+ // Wake threads waiting on the futex *__addr.\n+ inline void\n+ __platform_notify(const int* __addr, bool __all) noexcept\n+ {\n+ syscall (SYS_futex, __addr,\n+\t static_cast<int>(__futex_wait_flags::__wake_private),\n+\t __all ? INT_MAX : 1);\n+ }\n #endif\n \n inline void\n", "prefixes": [ "v1", "07/16" ] }