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Implement SetCurrentThreadAffinity on Android.

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But, it doesn't really seem to improve performance.
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2013-11-09 23:08:45 -08:00
parent 113146302b
commit 92d5643423
2 changed files with 24 additions and 15 deletions
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Common/Thread.cpp
+22 -13
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@@ -20,6 +20,8 @@
#ifdef __APPLE__
#include <mach/mach.h>
#elif defined(ANDROID)
#include <sys/syscall.h>
#elif defined BSD4_4
#include <pthread_np.h>
#endif
@@ -48,14 +50,14 @@ int CurrentThreadId()
#ifdef _WIN32
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
bool SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
{
SetThreadAffinityMask(thread, mask);
return SetThreadAffinityMask(thread, mask) != 0;
}
void SetCurrentThreadAffinity(u32 mask)
bool SetCurrentThreadAffinity(u32 mask)
{
SetThreadAffinityMask(GetCurrentThread(), mask);
return SetThreadAffinityMask(GetCurrentThread(), mask) != 0;
}
// Supporting functions
@@ -127,29 +129,36 @@ void EnableCrashingOnCrashes()
#else // !WIN32, so must be POSIX threads
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
bool SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
{
#ifdef __APPLE__
thread_policy_set(pthread_mach_thread_np(thread),
THREAD_AFFINITY_POLICY, (integer_t *)&mask, 1);
#elif (defined __linux__ || defined BSD4_4) && !defined(ANDROID)
return thread_policy_set(pthread_mach_thread_np(thread),
THREAD_AFFINITY_POLICY, (integer_t *)&mask, 1) == 0;
#elif defined(ANDROID) || defined(BLACKBERRY)
return false;
#elif (defined __linux__ || defined BSD4_4)
cpu_set_t cpu_set;
CPU_ZERO(&cpu_set);
for (int i = 0; i != sizeof(mask) * 8; ++i)
for (int i = 0; i != sizeof(mask) * 8; ++i) {
if ((mask >> i) & 1)
CPU_SET(i, &cpu_set);
}
pthread_setaffinity_np(thread, sizeof(cpu_set), &cpu_set);
return pthread_setaffinity_np(thread, sizeof(cpu_set), &cpu_set) == 0;
#endif
return false;
}
void SetCurrentThreadAffinity(u32 mask)
bool SetCurrentThreadAffinity(u32 mask)
{
#ifdef BLACKBERRY
ThreadCtl(_NTO_TCTL_RUNMASK, &mask);
return ThreadCtl(_NTO_TCTL_RUNMASK, &mask) != -1;
#elif defined(ANDROID)
return syscall(__NR_sched_setaffinity, gettid(), sizeof(mask), &mask) == 0;
#else
SetThreadAffinity(pthread_self(), mask);
return SetThreadAffinity(pthread_self(), mask);
#endif
}