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libsysprof: record some system info from linux instrument

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We might want a secondary instrument for this eventually, but for now we'll
just attach it in the Linux instrument.

This takes the output of eglinfo and glxinfo and adds it as a file in the
capture syscap. Compressed of course to keep the size smaller.
This commit is contained in:
Christian Hergert
2023-07-19 18:30:24 -07:00
parent 90ed413c5a
commit 3b2e9edeb9
1 changed files with 67 additions and 0 deletions
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67
src/libsysprof/sysprof-linux-instrument.c
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@ -268,6 +268,69 @@ sysprof_linux_instrument_prepare (SysprofInstrument *instrument,
g_object_unref);
}
static void
add_process_output_as_file_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
g_autoptr(DexPromise) promise = user_data;
g_autoptr(GError) error = NULL;
g_autofree char *stdout_buf = NULL;
g_assert (G_IS_SUBPROCESS (object));
g_assert (G_IS_ASYNC_RESULT (result));
g_assert (DEX_IS_PROMISE (promise));
if (g_subprocess_communicate_utf8_finish (G_SUBPROCESS (object), result, &stdout_buf, NULL, &error))
dex_promise_resolve_string (promise, g_steal_pointer (&stdout_buf));
else
dex_promise_reject (promise, g_steal_pointer (&error));
}
static void
add_process_output_as_file (SysprofRecording *recording,
const char *command_line,
const char *filename,
gboolean compress)
{
g_autoptr(GSubprocessLauncher) launcher = NULL;
g_autoptr(GSubprocess) subprocess = NULL;
g_autoptr(DexPromise) promise = NULL;
g_autoptr(GError) error = NULL;
g_auto(GStrv) argv = NULL;
g_autofree char *string = NULL;
int argc;
g_assert (SYSPROF_IS_RECORDING (recording));
if (!g_shell_parse_argv (command_line, &argc, &argv, &error))
goto error;
launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDOUT_PIPE);
if (!(subprocess = g_subprocess_launcher_spawnv (launcher, (const char * const *)argv, &error)))
goto error;
promise = dex_promise_new ();
g_subprocess_communicate_utf8_async (subprocess,
NULL,
dex_promise_get_cancellable (promise),
add_process_output_as_file_cb,
dex_ref (promise));
if (!(string = dex_await_string (dex_ref (promise), &error)))
goto error;
_sysprof_recording_add_file_data (recording, filename, string, -1, compress);
return;
error:
_sysprof_recording_diagnostic (recording,
"Linux",
"Failed to get output for '%s': %s",
command_line, error->message);
}
static DexFuture *
sysprof_linux_instrument_record_fiber (gpointer user_data)
{
@ -280,6 +343,10 @@ sysprof_linux_instrument_record_fiber (gpointer user_data)
g_assert (SYSPROF_IS_RECORDING (recording));
/* Try to get some info into our capture for decoding */
add_process_output_as_file (recording, "eglinfo", "eglinfo", TRUE);
add_process_output_as_file (recording, "glxinfo", "glxinfo", TRUE);
/* We need access to the bus to call various sysprofd API directly */
if (!(bus = dex_await_object (dex_bus_get (G_BUS_TYPE_SYSTEM), &error)))
return dex_future_new_for_error (g_steal_pointer (&error));