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conf: make delayed rendering timeouts configurable

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This adds an undocumented 'tweak' section to footrc, with two new
options:

* delayed-render-lower
* delayed-render-upper

Both takes an integer value, representing the lower/upper timeout
values (in nano seconds) for delayed rendering.
This commit is contained in:
Daniel Eklöf 2020-03-17 16:46:54 +01:00
parent 29c781b832
commit 6e63fdb053
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
3 changed files with 65 additions and 7 deletions
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52
config.c
View file

@ -584,6 +584,51 @@ parse_section_mouse_bindings(
return false;
}
static bool
parse_section_tweak(
const char *key, const char *value, struct config *conf,
const char *path, unsigned lineno)
{
if (strcmp(key, "delayed-render-lower") == 0) {
unsigned long ns;
if (!str_to_ulong(value, 10, &ns)) {
LOG_ERR("%s:%d: expected an integer: %s", path, lineno, value);
return false;
}
if (ns > 16666666) {
LOG_ERR("%s:%d: timeout must not exceed 16ms", path, lineno);
return false;
}
conf->tweak.delayed_render_lower_ns = ns;
LOG_WARN("tweak: delayed-render-lower=%lu", ns);
}
else if (strcmp(key, "delayed-render-upper") == 0) {
unsigned long ns;
if (!str_to_ulong(value, 10, &ns)) {
LOG_ERR("%s:%d: expected an integer: %s", path, lineno, value);
return false;
}
if (ns > 16666666) {
LOG_ERR("%s:%d: timeout must not exceed 16ms", path, lineno);
return false;
}
conf->tweak.delayed_render_upper_ns = ns;
LOG_WARN("tweak: delayed-render-upper=%lu", ns);
}
else {
LOG_ERR("%s:%u: invalid key: %s", path, lineno, key);
return false;
}
return true;
}
static bool
parse_config_file(FILE *f, struct config *conf, const char *path)
{
@ -594,6 +639,7 @@ parse_config_file(FILE *f, struct config *conf, const char *path)
SECTION_CSD,
SECTION_KEY_BINDINGS,
SECTION_MOUSE_BINDINGS,
SECTION_TWEAK,
SECTION_COUNT,
} section = SECTION_MAIN;
@ -612,6 +658,7 @@ parse_config_file(FILE *f, struct config *conf, const char *path)
[SECTION_CSD] = {&parse_section_csd, "csd"},
[SECTION_KEY_BINDINGS] = {&parse_section_key_bindings, "key-bindings"},
[SECTION_MOUSE_BINDINGS] = {&parse_section_mouse_bindings, "mouse-bindings"},
[SECTION_TWEAK] = {&parse_section_tweak, "tweak"},
};
static_assert(ALEN(section_info) == SECTION_COUNT, "section info array size mismatch");
@ -823,6 +870,11 @@ config_load(struct config *conf, const char *conf_path)
.server_socket_path = get_server_socket_path(),
.presentation_timings = false,
.hold_at_exit = false,
.tweak = {
.delayed_render_lower_ns = 500000, /* 0.5ms */
.delayed_render_upper_ns = 16666666 / 2, /* half a frame period (60Hz) */
},
};
char *default_path = NULL;