f2cc8881d7
Rewrite a comment added in 2f732bf15e (tr2: log parent process name,
2021-07-21) to describe what we might do under
TRACE2_PROCESS_INFO_EXIT in the future, instead of vaguely referring
to "something extra".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include "cache.h"
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#include "strbuf.h"
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#include "strvec.h"
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#include "trace2.h"
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static void get_ancestry_names(struct strvec *names)
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{
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/*
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* NEEDSWORK: We could gather the entire pstree into an array to match
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* functionality with compat/win32/trace2_win32_process_info.c.
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* To do so, we may want to examine /proc/<pid>/stat. For now, just
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* gather the immediate parent name which is readily accessible from
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* /proc/$(getppid())/comm.
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*/
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struct strbuf procfs_path = STRBUF_INIT;
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struct strbuf name = STRBUF_INIT;
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/* try to use procfs if it's present. */
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strbuf_addf(&procfs_path, "/proc/%d/comm", getppid());
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if (strbuf_read_file(&name, procfs_path.buf, 0)) {
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strbuf_release(&procfs_path);
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strbuf_trim_trailing_newline(&name);
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strvec_push(names, strbuf_detach(&name, NULL));
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}
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return;
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}
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void trace2_collect_process_info(enum trace2_process_info_reason reason)
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{
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if (!trace2_is_enabled())
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return;
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if (reason == TRACE2_PROCESS_INFO_EXIT)
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/*
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* The Windows version of this calls its
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* get_peak_memory_info() here. We may want to insert
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* similar process-end statistics here in the future.
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*/
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return;
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if (reason == TRACE2_PROCESS_INFO_STARTUP) {
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/*
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* NEEDSWORK: we could do the entire ptree in an array instead,
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* see compat/win32/trace2_win32_process_info.c.
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*/
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struct strvec names = STRVEC_INIT;
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get_ancestry_names(&names);
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if (names.nr)
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trace2_cmd_ancestry(names.v);
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strvec_clear(&names);
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}
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return;
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}
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