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[all] provide conditional path optimization hints to the compiler

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This commit is contained in:
Geoffrey McRae
2023-11-12 18:26:08 +11:00
parent 7bea919352
commit 929e88b9d3
8 changed files with 117 additions and 94 deletions
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33
client/src/main.c
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@@ -209,17 +209,16 @@ static int renderThread(void * unused)
struct timespec time;
clock_gettime(CLOCK_MONOTONIC, &time);
while(g_state.state != APP_STATE_SHUTDOWN)
while(likely(g_state.state != APP_STATE_SHUTDOWN))
{
bool forceRender = false;
if (g_state.jitRender)
forceRender = g_state.ds->waitFrame();
app_handleRenderEvent(microtime());
if (g_state.jitRender)
{
const bool forceRender = g_state.ds->waitFrame();
app_handleRenderEvent(microtime());
const uint64_t pending =
atomic_load_explicit(&g_state.pendingCount, memory_order_acquire);
if (!lgResetEvent(g_state.frameEvent)
&& !forceRender
&& !pending
@@ -235,9 +234,13 @@ static int renderThread(void * unused)
}
else if (g_params.fpsMin != 0)
{
app_handleRenderEvent(microtime());
float ups = atomic_load_explicit(&g_state.ups, memory_order_relaxed);
if (!lgWaitEventAbs(g_state.frameEvent, &time) || ups > g_params.fpsMin)
if (unlikely(
!lgWaitEventAbs(g_state.frameEvent, &time) ||
ups > g_params.fpsMin))
{
/* only update the time if we woke up early */
clock_gettime(CLOCK_MONOTONIC, &time);
@@ -247,7 +250,7 @@ static int renderThread(void * unused)
}
int resize = atomic_load(&g_state.lgrResize);
if (resize)
if (unlikely(resize))
{
g_state.io->DisplaySize = (ImVec2) {
.x = g_state.windowW,
@@ -286,8 +289,8 @@ static int renderThread(void * unused)
renderQueue_process();
if (!RENDERER(render, g_params.winRotate, newFrame, invalidate,
preSwapCallback, (void *)&renderStart))
if (unlikely(!RENDERER(render, g_params.winRotate, newFrame, invalidate,
preSwapCallback, (void *)&renderStart)))
{
LG_UNLOCK(g_state.lgrLock);
break;
@@ -300,7 +303,7 @@ static int renderThread(void * unused)
g_state.lastRenderTime = t;
atomic_fetch_add_explicit(&g_state.renderCount, 1, memory_order_relaxed);
if (g_state.lastRenderTimeValid)
if (likely(g_state.lastRenderTimeValid))
{
const float fdelta = (float)delta / 1e6f;
ringbuffer_push(g_state.renderTimings, &fdelta);
@@ -308,7 +311,9 @@ static int renderThread(void * unused)
g_state.lastRenderTimeValid = true;
const uint64_t now = microtime();
if (!g_state.resizeDone && g_state.resizeTimeout < now)
if (unlikely(
!g_state.resizeDone &&
g_state.resizeTimeout < now))
{
if (g_params.autoResize)
{
@@ -1739,9 +1744,9 @@ restart:
return -1;
}
while(g_state.state == APP_STATE_RUNNING)
while(likely(g_state.state == APP_STATE_RUNNING))
{
if (!lgmpClientSessionValid(g_state.lgmp))
if (unlikely(!lgmpClientSessionValid(g_state.lgmp)))
{
g_state.lgHostConnected = false;
DEBUG_INFO("Waiting for the host to restart...");