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authorbunnei <bunneidev@gmail.com>2017-01-07 04:01:33 +0100
committerGitHub <noreply@github.com>2017-01-07 04:01:33 +0100
commitb5eac78b43c254b20ef88386b4fdaf0bb6c29fe2 (patch)
treeb5ec9f4c3d520745e15d249e9a102ddefbb22b27 /src/core/hle/svc.cpp
parentMerge pull request #2396 from Subv/sema_acquire (diff)
parentKernel: Don't attempt to yield execution in SleepThread(0) if there are no available threads to run. (diff)
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Diffstat (limited to 'src/core/hle/svc.cpp')
-rw-r--r--src/core/hle/svc.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/core/hle/svc.cpp b/src/core/hle/svc.cpp
index 843d697ec..2b242ff98 100644
--- a/src/core/hle/svc.cpp
+++ b/src/core/hle/svc.cpp
@@ -849,6 +849,11 @@ static ResultCode CancelTimer(Kernel::Handle handle) {
static void SleepThread(s64 nanoseconds) {
LOG_TRACE(Kernel_SVC, "called nanoseconds=%lld", nanoseconds);
+ // Don't attempt to yield execution if there are no available threads to run,
+ // this way we avoid a useless reschedule to the idle thread.
+ if (nanoseconds == 0 && !Kernel::HaveReadyThreads())
+ return;
+
// Sleep current thread and check for next thread to schedule
Kernel::WaitCurrentThread_Sleep();