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#include "stdafx.h" | ||
#include "ThreadHelper.h" | ||
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#include "BuildConfig.h" | ||
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#ifdef DISRUPTOR_OS_FAMILY_MACOS | ||
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#include <string> | ||
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#include <pthread.h> | ||
#include <unistd.h> | ||
#include <sched.h> | ||
#include <cpuid.h> | ||
#include <sys/sysctl.h> | ||
#include <sys/syscall.h> | ||
#include <sys/types.h> | ||
#include <mach/mach_types.h> | ||
#include <mach/thread_act.h> | ||
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#define SYSCTL_CORE_COUNT "machdep.cpu.core_count" | ||
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#define CPUID(INFO, LEAF, SUBLEAF) __cpuid_count(LEAF, SUBLEAF, INFO[0], INFO[1], INFO[2], INFO[3]) | ||
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#define GETCPU(CPU) { \ | ||
uint32_t CPUInfo[4]; \ | ||
CPUID(CPUInfo, 1, 0); \ | ||
/* CPUInfo[1] is EBX, bits 24-31 are APIC ID */ \ | ||
if ( (CPUInfo[3] & (1 << 9)) == 0) { \ | ||
(CPU) = -1; /* no APIC on chip */ \ | ||
} \ | ||
else { \ | ||
(CPU) = (unsigned)CPUInfo[1] >> 24; \ | ||
} \ | ||
if ((CPU) < 0) (CPU) = 0; \ | ||
} | ||
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namespace Disruptor | ||
{ | ||
namespace ThreadHelper | ||
{ | ||
typedef struct cpu_set { | ||
uint32_t count; | ||
} cpu_set_t; | ||
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static inline void CPU_ZERO(cpu_set_t *cs) { cs->count = 0; } | ||
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static inline void CPU_SET(int num, cpu_set_t *cs) { cs->count |= (1 << num); } | ||
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static inline int CPU_ISSET(int num, cpu_set_t *cs) { return (cs->count & (1 << num)); } | ||
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int sched_getaffinity(pid_t pid, size_t cpu_size, cpu_set_t *cpu_set) | ||
{ | ||
(void) pid; | ||
(void) cpu_size; | ||
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int32_t core_count = 0; | ||
size_t len = sizeof(core_count); | ||
int ret = sysctlbyname(SYSCTL_CORE_COUNT, &core_count, &len, 0, 0); | ||
if (ret) { | ||
return -1; | ||
} | ||
cpu_set->count = 0; | ||
for (int i = 0; i < core_count; i++) { | ||
cpu_set->count |= (1 << i); | ||
} | ||
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return 0; | ||
} | ||
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int pthread_setaffinity_np(pthread_t thread, size_t cpu_size, | ||
cpu_set_t *cpu_set) | ||
{ | ||
thread_port_t mach_thread; | ||
int core = 0; | ||
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for (core = 0; core < 8 * (int)cpu_size; core++) { | ||
if (CPU_ISSET(core, cpu_set)) break; | ||
} | ||
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thread_affinity_policy_data_t policy = { core }; | ||
mach_thread = pthread_mach_thread_np(thread); | ||
thread_policy_set(mach_thread, THREAD_AFFINITY_POLICY, | ||
(thread_policy_t)&policy, 1); | ||
return 0; | ||
} | ||
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size_t getProcessorCount() | ||
{ | ||
return static_cast<size_t>(sysconf(_SC_NPROCESSORS_CONF)); | ||
} | ||
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uint32_t getCurrentProcessor() | ||
{ | ||
uint32_t cpu_id; | ||
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GETCPU(cpu_id); | ||
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return cpu_id; | ||
} | ||
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bool setThreadAffinity(const AffinityMask& mask) | ||
{ | ||
cpu_set_t cpuSet; | ||
CPU_ZERO(&cpuSet); | ||
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for (size_t i = 0; i < mask.size(); ++i) | ||
{ | ||
if (mask.test(i)) | ||
CPU_SET(i, &cpuSet); | ||
} | ||
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return pthread_setaffinity_np(pthread_self(), sizeof(cpuSet), &cpuSet) == 0; | ||
} | ||
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AffinityMask getThreadAffinity() | ||
{ | ||
AffinityMask mask; | ||
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cpu_set_t cpuSet; | ||
CPU_ZERO(&cpuSet); | ||
if (sched_getaffinity(0, sizeof(cpuSet), &cpuSet) == 0) | ||
{ | ||
int processorCount = getProcessorCount(); | ||
int maskSize = (int) mask.size(); | ||
for (int i = 0; i < processorCount && i < maskSize; ++i) | ||
{ | ||
if (CPU_ISSET(i, &cpuSet)) | ||
mask.set(i); | ||
} | ||
} | ||
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return mask; | ||
} | ||
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uint32_t getCurrentThreadId() | ||
{ | ||
uint64_t result; | ||
pthread_threadid_np(NULL, &result); | ||
return (uint32_t) result; | ||
} | ||
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void setThreadName(const std::string& name) | ||
{ | ||
pthread_setname_np(name.c_str()); | ||
} | ||
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} // namespace ThreadHelper | ||
} // namespace Disruptor | ||
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#endif // DISRUPTOR_OS_FAMILY_UNIX |