diff options
| author | Jeff Hostetler <jeffhost@microsoft.com> | 2021-09-20 18:36:12 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-09-20 18:57:58 +0300 |
| commit | 64bc75244b5bdc26112cf7b8533a832b692a5fda (patch) | |
| tree | a437715e40883730a1d6eede3123eb39e7d99d73 /trace2/tr2_tgt_normal.c | |
| parent | 4c719308ce59dc70e606f910f40801f2c6051b24 (diff) | |
trace2: add trace2_child_ready() to report on background children
Create "child_ready" event to capture the state of a child process
created in the background.
When a child command is started a "child_start" event is generated in
the Trace2 log. For normal synchronous children, a "child_exit" event
is later generated when the child exits or is terminated. The two events
include information, such as the "child_id" and "pid", to allow post
analysis to match-up the command line and exit status.
When a child is started in the background (and may outlive the parent
process), it is not possible for the parent to emit a "child_exit"
event. Create a new "child_ready" event to indicate whether the
child was successfully started. Also include the "child_id" and "pid"
to allow similar post processing.
This will be used in a later commit with the new "start_bg_command()".
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'trace2/tr2_tgt_normal.c')
| -rw-r--r-- | trace2/tr2_tgt_normal.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/trace2/tr2_tgt_normal.c b/trace2/tr2_tgt_normal.c index a5751c8864..58d9e430f0 100644 --- a/trace2/tr2_tgt_normal.c +++ b/trace2/tr2_tgt_normal.c @@ -251,6 +251,19 @@ static void fn_child_exit_fl(const char *file, int line, strbuf_release(&buf_payload); } +static void fn_child_ready_fl(const char *file, int line, + uint64_t us_elapsed_absolute, int cid, int pid, + const char *ready, uint64_t us_elapsed_child) +{ + struct strbuf buf_payload = STRBUF_INIT; + double elapsed = (double)us_elapsed_child / 1000000.0; + + strbuf_addf(&buf_payload, "child_ready[%d] pid:%d ready:%s elapsed:%.6f", + cid, pid, ready, elapsed); + normal_io_write_fl(file, line, &buf_payload); + strbuf_release(&buf_payload); +} + static void fn_exec_fl(const char *file, int line, uint64_t us_elapsed_absolute, int exec_id, const char *exe, const char **argv) { @@ -330,6 +343,7 @@ struct tr2_tgt tr2_tgt_normal = { fn_alias_fl, fn_child_start_fl, fn_child_exit_fl, + fn_child_ready_fl, NULL, /* thread_start */ NULL, /* thread_exit */ fn_exec_fl, |