mirror of
https://github.com/FeralInteractive/gamemode.git
synced 2025-06-06 23:57:22 +02:00
refactor: Simplify the log hinter
Signed-off-by: Kai Krakow <kai@kaishome.de>
This commit is contained in:
Kai Krakow
parent
f4cd01f989
commit
5396370e5d
@ -114,7 +114,10 @@ void game_mode_apply_ioprio(const GameModeContext *self, const pid_t client)
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int invalid_ioprio = ioprio;
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ioprio = CLAMP(0, 7, ioprio);
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if (ioprio != invalid_ioprio)
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LOG_ERROR("IO priority value %d invalid, clamping to %d\n", invalid_ioprio, ioprio);
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LOG_ONCE(ERROR,
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"IO priority value %d invalid, clamping to %d\n",
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invalid_ioprio,
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ioprio);
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/* We support only IOPRIO_CLASS_BE as IOPRIO_CLASS_RT required CAP_SYS_ADMIN */
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ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, ioprio);
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@ -67,7 +67,8 @@ void game_mode_apply_renice(const GameModeContext *self, const pid_t client)
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long int renice = 0;
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config_get_renice_value(config, &renice);
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if ((renice < 1) || (renice > 20)) {
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LOG_ERROR("Invalid renice value '%ld' reset to default: %d.\n",
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LOG_ONCE(ERROR,
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"Invalid renice value '%ld' reset to default: %d.\n",
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renice,
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-NICE_DEFAULT_PRIORITY);
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renice = NICE_DEFAULT_PRIORITY;
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@ -81,8 +82,8 @@ void game_mode_apply_renice(const GameModeContext *self, const pid_t client)
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if (getpriority(PRIO_PROCESS, (id_t)client) != 0) {
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LOG_ERROR("Refused to renice client [%d]: already reniced\n", client);
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} else if (setpriority(PRIO_PROCESS, (id_t)client, (int)renice)) {
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LOG_ERROR(
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"Failed to renice client [%d], ignoring error condition: %s\n"
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LOG_HINTED(ERROR,
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"Failed to renice client [%d], ignoring error condition: %s\n",
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" -- Your user may not have permission to do this. Please read the docs\n"
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" -- to learn how to adjust the pam limits.\n",
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client,
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@ -114,40 +115,31 @@ void game_mode_apply_scheduling(const GameModeContext *self, const pid_t client)
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if (!(strcmp(softrealtime, "off") == 0) && (enable_softrealtime)) {
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const struct sched_param p = { .sched_priority = 0 };
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if (sched_setscheduler(client, SCHED_ISO | SCHED_RESET_ON_FORK, &p)) {
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const char *additional_message = "";
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switch (errno) {
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case EPERM: {
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static int once = 0;
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if (once++)
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break;
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additional_message =
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const char *hint = "";
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HINT_ONCE_ON(
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errno == EPERM,
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hint,
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" -- The error indicates that you may be running a resource management\n"
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" -- daemon managing your game launcher and it leaks lower scheduling\n"
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" -- classes into the games. This is likely a bug in the management daemon\n"
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" -- and not a bug in GameMode, it should be reported upstream.\n"
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" -- If unsure, please also look here:\n"
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" -- https://github.com/FeralInteractive/gamemode/issues/68\n";
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break;
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}
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case EINVAL: {
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static int once = 0;
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if (once++)
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break;
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additional_message =
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" -- https://github.com/FeralInteractive/gamemode/issues/68\n");
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HINT_ONCE_ON(
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errno == EINVAL,
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hint,
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" -- The error indicates that your kernel may not support this. If you\n"
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" -- don't know what SCHED_ISO means, you can safely ignore this. If you\n"
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" -- expected it to work, ensure you're running a kernel with MuQSS or\n"
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" -- PDS scheduler.\n"
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" -- For further technical reading on the topic start here:\n"
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" -- https://lwn.net/Articles/720227/\n";
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break;
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}
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}
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" -- https://lwn.net/Articles/720227/\n");
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LOG_ERROR(
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"Failed setting client [%d] into SCHED_ISO mode, ignoring error condition: %s\n%s",
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"Failed setting client [%d] into SCHED_ISO mode, ignoring error condition: %s\n"
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"%s",
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client,
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strerror(errno),
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additional_message);
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hint);
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}
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} else {
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LOG_ERROR("Skipped setting client [%d] into SCHED_ISO mode: softrealtime setting is '%s'\n",
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@ -323,16 +323,12 @@ bool game_mode_context_register(GameModeContext *self, pid_t client)
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pthread_rwlock_rdlock(&self->rwlock); // ensure our pointer is sane
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const GameModeClient *existing = game_mode_context_has_client(self, client);
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if (existing) {
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static int once = 0;
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const char *additional_message =
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(once++
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? ""
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: " -- This may happen due to using exec or shell wrappers. You may want to\n"
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" -- blacklist this client so GameMode can see its final name here.\n");
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LOG_ERROR("Addition requested for already known client %d [%s].\n%s",
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LOG_HINTED(ERROR,
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"Addition requested for already known client %d [%s].\n",
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" -- This may happen due to using exec or shell wrappers. You may want to\n"
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" -- blacklist this client so GameMode can see its final name here.\n",
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existing->pid,
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existing->executable,
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additional_message);
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existing->executable);
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pthread_rwlock_unlock(&self->rwlock);
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goto error_cleanup;
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}
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@ -423,15 +419,14 @@ bool game_mode_context_unregister(GameModeContext *self, pid_t client)
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pthread_rwlock_unlock(&self->rwlock);
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if (!found) {
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static int once = 0;
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const char *additional_message =
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(once++
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? ""
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: " -- The parent process probably forked and tries to unregister from the\n"
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" -- wrong process now. We cannot work around this. This message will\n"
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" -- likely be paired with a nearby 'Removing expired game' which means we\n"
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" -- cleaned up properly (we will log this event).\n");
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LOG_ERROR("Removal requested for unknown process [%d].\n%s", client, additional_message);
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LOG_HINTED(
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ERROR,
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"Removal requested for unknown process [%d].\n",
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" -- The parent process probably forked and tries to unregister from the wrong\n"
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" -- process now. We cannot work around this. This message will likely be paired\n"
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" -- with a nearby 'Removing expired game' which means we cleaned up properly\n"
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" -- (we will log this event). This hint will be displayed only once.\n",
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client);
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return false;
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}
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@ -62,6 +62,13 @@ POSSIBILITY OF SUCH DAMAGE.
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} \
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} while (0)
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#define LOG_ONCE(type, ...) \
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do { \
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static int __once = 0; \
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if (!__once++) \
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LOG_##type(__VA_ARGS__); \
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} while (0)
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/* Fatal warnings trigger an exit */
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#define FATAL_ERRORNO(msg) \
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do { \
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@ -74,6 +81,26 @@ POSSIBILITY OF SUCH DAMAGE.
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exit(EXIT_FAILURE); \
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} while (0)
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/* Hinting helpers */
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#define HINT_ONCE(name, hint) \
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do { \
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static int __once = 0; \
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name = (!__once++ ? hint : ""); \
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} while (0)
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#define HINT_ONCE_ON(cond, ...) \
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do { \
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if (cond) \
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HINT_ONCE(__VA_ARGS__); \
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} while (0);
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#define LOG_HINTED(type, msg, hint, ...) \
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do { \
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const char *__arg; \
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HINT_ONCE(__arg, hint); \
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LOG_##type(msg "%s", __VA_ARGS__, __arg); \
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} while (0)
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/**
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* Control if and how how we use syslog
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*/
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