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Fri, 13 Feb 2026 11:55:08 -0800 (PST) Received: from [127.0.0.1] ([64.236.135.10]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8971cdbf972sm70177506d6.44.2026.02.13.11.55.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Feb 2026 11:55:08 -0800 (PST) Message-Id: <6b9054115eddeb08d0e429f1ec45093691dd84d3.1771012500.git.gitgitgadget@gmail.com> In-Reply-To: References: From: "Matthew John Cheetham via GitGitGadget" Date: Fri, 13 Feb 2026 19:54:58 +0000 Subject: [PATCH v2 4/6] trace2: emit cmd_ancestry data for Windows Fcc: Sent Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To: git@vger.kernel.org Cc: gitster@pobox.com, stolee@gmail.com, johannes.schindelin@gmx.de, Kristoffer Haugsbakk , Matthew John Cheetham , Matthew John Cheetham , Matthew John Cheetham From: Matthew John Cheetham Since 2f732bf15e (tr2: log parent process name, 2021-07-21) it is now now possible to emit a specific process ancestry event in TRACE2. We should emit the Windows process ancestry data with the correct event type. To not break existing consumers of the data_json "windows/ancestry" event, we continue to emit the ancestry data as a JSON event. Signed-off-by: Matthew John Cheetham --- compat/win32/trace2_win32_process_info.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/compat/win32/trace2_win32_process_info.c b/compat/win32/trace2_win32_process_info.c index aceea05430..6a6a396078 100644 --- a/compat/win32/trace2_win32_process_info.c +++ b/compat/win32/trace2_win32_process_info.c @@ -172,6 +172,11 @@ void trace2_collect_process_info(enum trace2_process_info_reason reason) get_is_being_debugged(); get_ancestry(&names); if (names.nr) { + /* + Emit the ancestry data as a data_json event to + maintain compatibility for consumers of the older + "windows/ancestry" event. + */ struct json_writer jw = JSON_WRITER_INIT; jw_array_begin(&jw, 0); for (size_t i = 0; i < names.nr; i++) @@ -180,6 +185,9 @@ void trace2_collect_process_info(enum trace2_process_info_reason reason) trace2_data_json("process", the_repository, "windows/ancestry", &jw); jw_release(&jw); + + /* Emit the ancestry data with the new event. */ + trace2_cmd_ancestry(names.v); } strvec_clear(&names); -- gitgitgadget