| /* |
| * z_Windows_NT_util.cpp -- platform specific routines. |
| */ |
| |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.txt for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| |
| #include "kmp.h" |
| #include "kmp_itt.h" |
| #include "kmp_i18n.h" |
| #include "kmp_io.h" |
| #include "kmp_wait_release.h" |
| #include "kmp_affinity.h" |
| |
| /* This code is related to NtQuerySystemInformation() function. This function |
| is used in the Load balance algorithm for OMP_DYNAMIC=true to find the |
| number of running threads in the system. */ |
| |
| #include <ntstatus.h> |
| #include <ntsecapi.h> // UNICODE_STRING |
| |
| enum SYSTEM_INFORMATION_CLASS { |
| SystemProcessInformation = 5 |
| }; // SYSTEM_INFORMATION_CLASS |
| |
| struct CLIENT_ID { |
| HANDLE UniqueProcess; |
| HANDLE UniqueThread; |
| }; // struct CLIENT_ID |
| |
| enum THREAD_STATE { |
| StateInitialized, |
| StateReady, |
| StateRunning, |
| StateStandby, |
| StateTerminated, |
| StateWait, |
| StateTransition, |
| StateUnknown |
| }; // enum THREAD_STATE |
| |
| struct VM_COUNTERS { |
| SIZE_T PeakVirtualSize; |
| SIZE_T VirtualSize; |
| ULONG PageFaultCount; |
| SIZE_T PeakWorkingSetSize; |
| SIZE_T WorkingSetSize; |
| SIZE_T QuotaPeakPagedPoolUsage; |
| SIZE_T QuotaPagedPoolUsage; |
| SIZE_T QuotaPeakNonPagedPoolUsage; |
| SIZE_T QuotaNonPagedPoolUsage; |
| SIZE_T PagefileUsage; |
| SIZE_T PeakPagefileUsage; |
| SIZE_T PrivatePageCount; |
| }; // struct VM_COUNTERS |
| |
| struct SYSTEM_THREAD { |
| LARGE_INTEGER KernelTime; |
| LARGE_INTEGER UserTime; |
| LARGE_INTEGER CreateTime; |
| ULONG WaitTime; |
| LPVOID StartAddress; |
| CLIENT_ID ClientId; |
| DWORD Priority; |
| LONG BasePriority; |
| ULONG ContextSwitchCount; |
| THREAD_STATE State; |
| ULONG WaitReason; |
| }; // SYSTEM_THREAD |
| |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_THREAD, KernelTime ) == 0 ); |
| #if KMP_ARCH_X86 |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_THREAD, StartAddress ) == 28 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_THREAD, State ) == 52 ); |
| #else |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_THREAD, StartAddress ) == 32 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_THREAD, State ) == 68 ); |
| #endif |
| |
| struct SYSTEM_PROCESS_INFORMATION { |
| ULONG NextEntryOffset; |
| ULONG NumberOfThreads; |
| LARGE_INTEGER Reserved[ 3 ]; |
| LARGE_INTEGER CreateTime; |
| LARGE_INTEGER UserTime; |
| LARGE_INTEGER KernelTime; |
| UNICODE_STRING ImageName; |
| DWORD BasePriority; |
| HANDLE ProcessId; |
| HANDLE ParentProcessId; |
| ULONG HandleCount; |
| ULONG Reserved2[ 2 ]; |
| VM_COUNTERS VMCounters; |
| IO_COUNTERS IOCounters; |
| SYSTEM_THREAD Threads[ 1 ]; |
| }; // SYSTEM_PROCESS_INFORMATION |
| typedef SYSTEM_PROCESS_INFORMATION * PSYSTEM_PROCESS_INFORMATION; |
| |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, NextEntryOffset ) == 0 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, CreateTime ) == 32 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, ImageName ) == 56 ); |
| #if KMP_ARCH_X86 |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, ProcessId ) == 68 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, HandleCount ) == 76 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, VMCounters ) == 88 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, IOCounters ) == 136 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, Threads ) == 184 ); |
| #else |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, ProcessId ) == 80 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, HandleCount ) == 96 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, VMCounters ) == 112 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, IOCounters ) == 208 ); |
| KMP_BUILD_ASSERT( offsetof( SYSTEM_PROCESS_INFORMATION, Threads ) == 256 ); |
| #endif |
| |
| typedef NTSTATUS (NTAPI *NtQuerySystemInformation_t)( SYSTEM_INFORMATION_CLASS, PVOID, ULONG, PULONG ); |
| NtQuerySystemInformation_t NtQuerySystemInformation = NULL; |
| |
| HMODULE ntdll = NULL; |
| |
| /* End of NtQuerySystemInformation()-related code */ |
| |
| static HMODULE kernel32 = NULL; |
| |
| /* ----------------------------------------------------------------------------------- */ |
| /* ----------------------------------------------------------------------------------- */ |
| |
| #if KMP_HANDLE_SIGNALS |
| typedef void (* sig_func_t )( int ); |
| static sig_func_t __kmp_sighldrs[ NSIG ]; |
| static int __kmp_siginstalled[ NSIG ]; |
| #endif |
| |
| #if KMP_USE_MONITOR |
| static HANDLE __kmp_monitor_ev; |
| #endif |
| static kmp_int64 __kmp_win32_time; |
| double __kmp_win32_tick; |
| |
| int __kmp_init_runtime = FALSE; |
| CRITICAL_SECTION __kmp_win32_section; |
| |
| void |
| __kmp_win32_mutex_init( kmp_win32_mutex_t *mx ) |
| { |
| InitializeCriticalSection( & mx->cs ); |
| #if USE_ITT_BUILD |
| __kmp_itt_system_object_created( & mx->cs, "Critical Section" ); |
| #endif /* USE_ITT_BUILD */ |
| } |
| |
| void |
| __kmp_win32_mutex_destroy( kmp_win32_mutex_t *mx ) |
| { |
| DeleteCriticalSection( & mx->cs ); |
| } |
| |
| void |
| __kmp_win32_mutex_lock( kmp_win32_mutex_t *mx ) |
| { |
| EnterCriticalSection( & mx->cs ); |
| } |
| |
| void |
| __kmp_win32_mutex_unlock( kmp_win32_mutex_t *mx ) |
| { |
| LeaveCriticalSection( & mx->cs ); |
| } |
| |
| void |
| __kmp_win32_cond_init( kmp_win32_cond_t *cv ) |
| { |
| cv->waiters_count_ = 0; |
| cv->wait_generation_count_ = 0; |
| cv->release_count_ = 0; |
| |
| /* Initialize the critical section */ |
| __kmp_win32_mutex_init( & cv->waiters_count_lock_ ); |
| |
| /* Create a manual-reset event. */ |
| cv->event_ = CreateEvent( NULL, // no security |
| TRUE, // manual-reset |
| FALSE, // non-signaled initially |
| NULL ); // unnamed |
| #if USE_ITT_BUILD |
| __kmp_itt_system_object_created( cv->event_, "Event" ); |
| #endif /* USE_ITT_BUILD */ |
| } |
| |
| void |
| __kmp_win32_cond_destroy( kmp_win32_cond_t *cv ) |
| { |
| __kmp_win32_mutex_destroy( & cv->waiters_count_lock_ ); |
| __kmp_free_handle( cv->event_ ); |
| memset( cv, '\0', sizeof( *cv ) ); |
| } |
| |
| /* TODO associate cv with a team instead of a thread so as to optimize |
| * the case where we wake up a whole team */ |
| |
| void |
| __kmp_win32_cond_wait( kmp_win32_cond_t *cv, kmp_win32_mutex_t *mx, kmp_info_t *th, int need_decrease_load ) |
| { |
| int my_generation; |
| int last_waiter; |
| |
| /* Avoid race conditions */ |
| __kmp_win32_mutex_lock( &cv->waiters_count_lock_ ); |
| |
| /* Increment count of waiters */ |
| cv->waiters_count_++; |
| |
| /* Store current generation in our activation record. */ |
| my_generation = cv->wait_generation_count_; |
| |
| __kmp_win32_mutex_unlock( &cv->waiters_count_lock_ ); |
| __kmp_win32_mutex_unlock( mx ); |
| |
| for (;;) { |
| int wait_done; |
| |
| /* Wait until the event is signaled */ |
| WaitForSingleObject( cv->event_, INFINITE ); |
| |
| __kmp_win32_mutex_lock( &cv->waiters_count_lock_ ); |
| |
| /* Exit the loop when the <cv->event_> is signaled and |
| * there are still waiting threads from this <wait_generation> |
| * that haven't been released from this wait yet. */ |
| wait_done = ( cv->release_count_ > 0 ) && |
| ( cv->wait_generation_count_ != my_generation ); |
| |
| __kmp_win32_mutex_unlock( &cv->waiters_count_lock_); |
| |
| /* there used to be a semicolon after the if statement, |
| * it looked like a bug, so i removed it */ |
| if( wait_done ) |
| break; |
| } |
| |
| __kmp_win32_mutex_lock( mx ); |
| __kmp_win32_mutex_lock( &cv->waiters_count_lock_ ); |
| |
| cv->waiters_count_--; |
| cv->release_count_--; |
| |
| last_waiter = ( cv->release_count_ == 0 ); |
| |
| __kmp_win32_mutex_unlock( &cv->waiters_count_lock_ ); |
| |
| if( last_waiter ) { |
| /* We're the last waiter to be notified, so reset the manual event. */ |
| ResetEvent( cv->event_ ); |
| } |
| } |
| |
| void |
| __kmp_win32_cond_broadcast( kmp_win32_cond_t *cv ) |
| { |
| __kmp_win32_mutex_lock( &cv->waiters_count_lock_ ); |
| |
| if( cv->waiters_count_ > 0 ) { |
| SetEvent( cv->event_ ); |
| /* Release all the threads in this generation. */ |
| |
| cv->release_count_ = cv->waiters_count_; |
| |
| /* Start a new generation. */ |
| cv->wait_generation_count_++; |
| } |
| |
| __kmp_win32_mutex_unlock( &cv->waiters_count_lock_ ); |
| } |
| |
| void |
| __kmp_win32_cond_signal( kmp_win32_cond_t *cv ) |
| { |
| __kmp_win32_cond_broadcast( cv ); |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void |
| __kmp_enable( int new_state ) |
| { |
| if (__kmp_init_runtime) |
| LeaveCriticalSection( & __kmp_win32_section ); |
| } |
| |
| void |
| __kmp_disable( int *old_state ) |
| { |
| *old_state = 0; |
| |
| if (__kmp_init_runtime) |
| EnterCriticalSection( & __kmp_win32_section ); |
| } |
| |
| void |
| __kmp_suspend_initialize( void ) |
| { |
| /* do nothing */ |
| } |
| |
| static void |
| __kmp_suspend_initialize_thread( kmp_info_t *th ) |
| { |
| if ( ! TCR_4( th->th.th_suspend_init ) ) { |
| /* this means we haven't initialized the suspension pthread objects for this thread |
| in this instance of the process */ |
| __kmp_win32_cond_init( &th->th.th_suspend_cv ); |
| __kmp_win32_mutex_init( &th->th.th_suspend_mx ); |
| TCW_4( th->th.th_suspend_init, TRUE ); |
| } |
| } |
| |
| void |
| __kmp_suspend_uninitialize_thread( kmp_info_t *th ) |
| { |
| if ( TCR_4( th->th.th_suspend_init ) ) { |
| /* this means we have initialize the suspension pthread objects for this thread |
| in this instance of the process */ |
| __kmp_win32_cond_destroy( & th->th.th_suspend_cv ); |
| __kmp_win32_mutex_destroy( & th->th.th_suspend_mx ); |
| TCW_4( th->th.th_suspend_init, FALSE ); |
| } |
| } |
| |
| /* This routine puts the calling thread to sleep after setting the |
| * sleep bit for the indicated flag variable to true. |
| */ |
| template <class C> |
| static inline void __kmp_suspend_template( int th_gtid, C *flag ) |
| { |
| kmp_info_t *th = __kmp_threads[th_gtid]; |
| int status; |
| typename C::flag_t old_spin; |
| |
| KF_TRACE( 30, ("__kmp_suspend_template: T#%d enter for flag's loc(%p)\n", th_gtid, flag->get() ) ); |
| |
| __kmp_suspend_initialize_thread( th ); |
| __kmp_win32_mutex_lock( &th->th.th_suspend_mx ); |
| |
| KF_TRACE( 10, ( "__kmp_suspend_template: T#%d setting sleep bit for flag's loc(%p)\n", |
| th_gtid, flag->get() ) ); |
| |
| /* TODO: shouldn't this use release semantics to ensure that __kmp_suspend_initialize_thread |
| gets called first? |
| */ |
| old_spin = flag->set_sleeping(); |
| |
| KF_TRACE( 5, ( "__kmp_suspend_template: T#%d set sleep bit for flag's loc(%p)==%d\n", |
| th_gtid, flag->get(), *(flag->get()) ) ); |
| |
| if ( flag->done_check_val(old_spin) ) { |
| old_spin = flag->unset_sleeping(); |
| KF_TRACE( 5, ( "__kmp_suspend_template: T#%d false alarm, reset sleep bit for flag's loc(%p)\n", |
| th_gtid, flag->get()) ); |
| } else { |
| #ifdef DEBUG_SUSPEND |
| __kmp_suspend_count++; |
| #endif |
| /* Encapsulate in a loop as the documentation states that this may |
| * "with low probability" return when the condition variable has |
| * not been signaled or broadcast |
| */ |
| int deactivated = FALSE; |
| TCW_PTR(th->th.th_sleep_loc, (void *)flag); |
| while ( flag->is_sleeping() ) { |
| KF_TRACE( 15, ("__kmp_suspend_template: T#%d about to perform kmp_win32_cond_wait()\n", |
| th_gtid ) ); |
| // Mark the thread as no longer active (only in the first iteration of the loop). |
| if ( ! deactivated ) { |
| th->th.th_active = FALSE; |
| if ( th->th.th_active_in_pool ) { |
| th->th.th_active_in_pool = FALSE; |
| KMP_TEST_THEN_DEC32( |
| (kmp_int32 *) &__kmp_thread_pool_active_nth ); |
| KMP_DEBUG_ASSERT( TCR_4(__kmp_thread_pool_active_nth) >= 0 ); |
| } |
| deactivated = TRUE; |
| |
| __kmp_win32_cond_wait( &th->th.th_suspend_cv, &th->th.th_suspend_mx, 0, 0 ); |
| } |
| else { |
| __kmp_win32_cond_wait( &th->th.th_suspend_cv, &th->th.th_suspend_mx, 0, 0 ); |
| } |
| |
| #ifdef KMP_DEBUG |
| if( flag->is_sleeping() ) { |
| KF_TRACE( 100, ("__kmp_suspend_template: T#%d spurious wakeup\n", th_gtid )); |
| } |
| #endif /* KMP_DEBUG */ |
| |
| } // while |
| |
| // Mark the thread as active again (if it was previous marked as inactive) |
| if ( deactivated ) { |
| th->th.th_active = TRUE; |
| if ( TCR_4(th->th.th_in_pool) ) { |
| KMP_TEST_THEN_INC32( |
| (kmp_int32 *) &__kmp_thread_pool_active_nth ); |
| th->th.th_active_in_pool = TRUE; |
| } |
| } |
| } |
| |
| __kmp_win32_mutex_unlock( &th->th.th_suspend_mx ); |
| |
| KF_TRACE( 30, ("__kmp_suspend_template: T#%d exit\n", th_gtid ) ); |
| } |
| |
| void __kmp_suspend_32(int th_gtid, kmp_flag_32 *flag) { |
| __kmp_suspend_template(th_gtid, flag); |
| } |
| void __kmp_suspend_64(int th_gtid, kmp_flag_64 *flag) { |
| __kmp_suspend_template(th_gtid, flag); |
| } |
| void __kmp_suspend_oncore(int th_gtid, kmp_flag_oncore *flag) { |
| __kmp_suspend_template(th_gtid, flag); |
| } |
| |
| |
| /* This routine signals the thread specified by target_gtid to wake up |
| * after setting the sleep bit indicated by the flag argument to FALSE |
| */ |
| template <class C> |
| static inline void __kmp_resume_template( int target_gtid, C *flag ) |
| { |
| kmp_info_t *th = __kmp_threads[target_gtid]; |
| int status; |
| |
| #ifdef KMP_DEBUG |
| int gtid = TCR_4(__kmp_init_gtid) ? __kmp_get_gtid() : -1; |
| #endif |
| |
| KF_TRACE( 30, ( "__kmp_resume_template: T#%d wants to wakeup T#%d enter\n", gtid, target_gtid ) ); |
| |
| __kmp_suspend_initialize_thread( th ); |
| __kmp_win32_mutex_lock( &th->th.th_suspend_mx ); |
| |
| if (!flag) { // coming from __kmp_null_resume_wrapper |
| flag = (C *)th->th.th_sleep_loc; |
| } |
| |
| // First, check if the flag is null or its type has changed. If so, someone else woke it up. |
| if (!flag || flag->get_type() != flag->get_ptr_type()) { // get_ptr_type simply shows what flag was cast to |
| KF_TRACE( 5, ( "__kmp_resume_template: T#%d exiting, thread T#%d already awake: flag's loc(%p)\n", |
| gtid, target_gtid, NULL ) ); |
| __kmp_win32_mutex_unlock( &th->th.th_suspend_mx ); |
| return; |
| } |
| else { |
| typename C::flag_t old_spin = flag->unset_sleeping(); |
| if ( !flag->is_sleeping_val(old_spin) ) { |
| KF_TRACE( 5, ( "__kmp_resume_template: T#%d exiting, thread T#%d already awake: flag's loc(%p): " |
| "%u => %u\n", |
| gtid, target_gtid, flag->get(), old_spin, *(flag->get()) ) ); |
| __kmp_win32_mutex_unlock( &th->th.th_suspend_mx ); |
| return; |
| } |
| } |
| TCW_PTR(th->th.th_sleep_loc, NULL); |
| |
| KF_TRACE( 5, ( "__kmp_resume_template: T#%d about to wakeup T#%d, reset sleep bit for flag's loc(%p)\n", |
| gtid, target_gtid, flag->get() ) ); |
| |
| __kmp_win32_cond_signal( &th->th.th_suspend_cv ); |
| __kmp_win32_mutex_unlock( &th->th.th_suspend_mx ); |
| |
| KF_TRACE( 30, ( "__kmp_resume_template: T#%d exiting after signaling wake up for T#%d\n", |
| gtid, target_gtid ) ); |
| } |
| |
| void __kmp_resume_32(int target_gtid, kmp_flag_32 *flag) { |
| __kmp_resume_template(target_gtid, flag); |
| } |
| void __kmp_resume_64(int target_gtid, kmp_flag_64 *flag) { |
| __kmp_resume_template(target_gtid, flag); |
| } |
| void __kmp_resume_oncore(int target_gtid, kmp_flag_oncore *flag) { |
| __kmp_resume_template(target_gtid, flag); |
| } |
| |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void |
| __kmp_yield( int cond ) |
| { |
| if (cond) |
| Sleep(0); |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void |
| __kmp_gtid_set_specific( int gtid ) |
| { |
| if( __kmp_init_gtid ) { |
| KA_TRACE( 50, ("__kmp_gtid_set_specific: T#%d key:%d\n", |
| gtid, __kmp_gtid_threadprivate_key )); |
| if( ! TlsSetValue( __kmp_gtid_threadprivate_key, (LPVOID)(gtid+1)) ) |
| KMP_FATAL( TLSSetValueFailed ); |
| } else { |
| KA_TRACE( 50, ("__kmp_gtid_set_specific: runtime shutdown, returning\n" ) ); |
| } |
| } |
| |
| int |
| __kmp_gtid_get_specific() |
| { |
| int gtid; |
| if( !__kmp_init_gtid ) { |
| KA_TRACE( 50, ("__kmp_gtid_get_specific: runtime shutdown, returning KMP_GTID_SHUTDOWN\n" ) ); |
| return KMP_GTID_SHUTDOWN; |
| } |
| gtid = (int)(kmp_intptr_t)TlsGetValue( __kmp_gtid_threadprivate_key ); |
| if ( gtid == 0 ) { |
| gtid = KMP_GTID_DNE; |
| } |
| else { |
| gtid--; |
| } |
| KA_TRACE( 50, ("__kmp_gtid_get_specific: key:%d gtid:%d\n", |
| __kmp_gtid_threadprivate_key, gtid )); |
| return gtid; |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void |
| __kmp_affinity_bind_thread( int proc ) |
| { |
| if (__kmp_num_proc_groups > 1) { |
| // |
| // Form the GROUP_AFFINITY struct directly, rather than filling |
| // out a bit vector and calling __kmp_set_system_affinity(). |
| // |
| GROUP_AFFINITY ga; |
| KMP_DEBUG_ASSERT((proc >= 0) && (proc < (__kmp_num_proc_groups |
| * CHAR_BIT * sizeof(DWORD_PTR)))); |
| ga.Group = proc / (CHAR_BIT * sizeof(DWORD_PTR)); |
| ga.Mask = (unsigned long long)1 << (proc % (CHAR_BIT * sizeof(DWORD_PTR))); |
| ga.Reserved[0] = ga.Reserved[1] = ga.Reserved[2] = 0; |
| |
| KMP_DEBUG_ASSERT(__kmp_SetThreadGroupAffinity != NULL); |
| if (__kmp_SetThreadGroupAffinity(GetCurrentThread(), &ga, NULL) == 0) { |
| DWORD error = GetLastError(); |
| if (__kmp_affinity_verbose) { // AC: continue silently if not verbose |
| kmp_msg_t err_code = KMP_ERR( error ); |
| __kmp_msg( |
| kmp_ms_warning, |
| KMP_MSG( CantSetThreadAffMask ), |
| err_code, |
| __kmp_msg_null |
| ); |
| if (__kmp_generate_warnings == kmp_warnings_off) { |
| __kmp_str_free(&err_code.str); |
| } |
| } |
| } |
| } else { |
| kmp_affin_mask_t *mask; |
| KMP_CPU_ALLOC_ON_STACK(mask); |
| KMP_CPU_ZERO(mask); |
| KMP_CPU_SET(proc, mask); |
| __kmp_set_system_affinity(mask, TRUE); |
| KMP_CPU_FREE_FROM_STACK(mask); |
| } |
| } |
| |
| void |
| __kmp_affinity_determine_capable( const char *env_var ) |
| { |
| // |
| // All versions of Windows* OS (since Win '95) support SetThreadAffinityMask(). |
| // |
| |
| #if KMP_GROUP_AFFINITY |
| KMP_AFFINITY_ENABLE(__kmp_num_proc_groups*sizeof(DWORD_PTR)); |
| #else |
| KMP_AFFINITY_ENABLE(sizeof(DWORD_PTR)); |
| #endif |
| |
| KA_TRACE( 10, ( |
| "__kmp_affinity_determine_capable: " |
| "Windows* OS affinity interface functional (mask size = %" KMP_SIZE_T_SPEC ").\n", |
| __kmp_affin_mask_size |
| ) ); |
| } |
| |
| double |
| __kmp_read_cpu_time( void ) |
| { |
| FILETIME CreationTime, ExitTime, KernelTime, UserTime; |
| int status; |
| double cpu_time; |
| |
| cpu_time = 0; |
| |
| status = GetProcessTimes( GetCurrentProcess(), &CreationTime, |
| &ExitTime, &KernelTime, &UserTime ); |
| |
| if (status) { |
| double sec = 0; |
| |
| sec += KernelTime.dwHighDateTime; |
| sec += UserTime.dwHighDateTime; |
| |
| /* Shift left by 32 bits */ |
| sec *= (double) (1 << 16) * (double) (1 << 16); |
| |
| sec += KernelTime.dwLowDateTime; |
| sec += UserTime.dwLowDateTime; |
| |
| cpu_time += (sec * 100.0) / KMP_NSEC_PER_SEC; |
| } |
| |
| return cpu_time; |
| } |
| |
| int |
| __kmp_read_system_info( struct kmp_sys_info *info ) |
| { |
| info->maxrss = 0; /* the maximum resident set size utilized (in kilobytes) */ |
| info->minflt = 0; /* the number of page faults serviced without any I/O */ |
| info->majflt = 0; /* the number of page faults serviced that required I/O */ |
| info->nswap = 0; /* the number of times a process was "swapped" out of memory */ |
| info->inblock = 0; /* the number of times the file system had to perform input */ |
| info->oublock = 0; /* the number of times the file system had to perform output */ |
| info->nvcsw = 0; /* the number of times a context switch was voluntarily */ |
| info->nivcsw = 0; /* the number of times a context switch was forced */ |
| |
| return 1; |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| |
| void |
| __kmp_runtime_initialize( void ) |
| { |
| SYSTEM_INFO info; |
| kmp_str_buf_t path; |
| UINT path_size; |
| |
| if ( __kmp_init_runtime ) { |
| return; |
| }; |
| |
| #if KMP_DYNAMIC_LIB |
| /* Pin dynamic library for the lifetime of application */ |
| { |
| // First, turn off error message boxes |
| UINT err_mode = SetErrorMode (SEM_FAILCRITICALERRORS); |
| HMODULE h; |
| BOOL ret = GetModuleHandleEx( GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
| |GET_MODULE_HANDLE_EX_FLAG_PIN, |
| (LPCTSTR)&__kmp_serial_initialize, &h); |
| KMP_DEBUG_ASSERT2(h && ret, "OpenMP RTL cannot find itself loaded"); |
| SetErrorMode (err_mode); // Restore error mode |
| KA_TRACE( 10, ("__kmp_runtime_initialize: dynamic library pinned\n") ); |
| } |
| #endif |
| |
| InitializeCriticalSection( & __kmp_win32_section ); |
| #if USE_ITT_BUILD |
| __kmp_itt_system_object_created( & __kmp_win32_section, "Critical Section" ); |
| #endif /* USE_ITT_BUILD */ |
| __kmp_initialize_system_tick(); |
| |
| #if (KMP_ARCH_X86 || KMP_ARCH_X86_64) |
| if ( ! __kmp_cpuinfo.initialized ) { |
| __kmp_query_cpuid( & __kmp_cpuinfo ); |
| }; // if |
| #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ |
| |
| /* Set up minimum number of threads to switch to TLS gtid */ |
| #if KMP_OS_WINDOWS && ! defined KMP_DYNAMIC_LIB |
| // Windows* OS, static library. |
| /* |
| New thread may use stack space previously used by another thread, currently terminated. |
| On Windows* OS, in case of static linking, we do not know the moment of thread termination, |
| and our structures (__kmp_threads and __kmp_root arrays) are still keep info about dead |
| threads. This leads to problem in __kmp_get_global_thread_id() function: it wrongly |
| finds gtid (by searching through stack addresses of all known threads) for unregistered |
| foreign tread. |
| |
| Setting __kmp_tls_gtid_min to 0 workarounds this problem: __kmp_get_global_thread_id() |
| does not search through stacks, but get gtid from TLS immediately. |
| |
| --ln |
| */ |
| __kmp_tls_gtid_min = 0; |
| #else |
| __kmp_tls_gtid_min = KMP_TLS_GTID_MIN; |
| #endif |
| |
| /* for the static library */ |
| if ( !__kmp_gtid_threadprivate_key ) { |
| __kmp_gtid_threadprivate_key = TlsAlloc(); |
| if( __kmp_gtid_threadprivate_key == TLS_OUT_OF_INDEXES ) { |
| KMP_FATAL( TLSOutOfIndexes ); |
| } |
| } |
| |
| |
| // |
| // Load ntdll.dll. |
| // |
| /* |
| Simple |
| GetModuleHandle( "ntdll.dl" ) |
| is not suitable due to security issue (see |
| http://www.microsoft.com/technet/security/advisory/2269637.mspx). We have to specify full |
| path to the library. |
| */ |
| __kmp_str_buf_init( & path ); |
| path_size = GetSystemDirectory( path.str, path.size ); |
| KMP_DEBUG_ASSERT( path_size > 0 ); |
| if ( path_size >= path.size ) { |
| // |
| // Buffer is too short. Expand the buffer and try again. |
| // |
| __kmp_str_buf_reserve( & path, path_size ); |
| path_size = GetSystemDirectory( path.str, path.size ); |
| KMP_DEBUG_ASSERT( path_size > 0 ); |
| }; // if |
| if ( path_size > 0 && path_size < path.size ) { |
| // |
| // Now we have system directory name in the buffer. |
| // Append backslash and name of dll to form full path, |
| // |
| path.used = path_size; |
| __kmp_str_buf_print( & path, "\\%s", "ntdll.dll" ); |
| |
| // |
| // Now load ntdll using full path. |
| // |
| ntdll = GetModuleHandle( path.str ); |
| } |
| |
| KMP_DEBUG_ASSERT( ntdll != NULL ); |
| if ( ntdll != NULL ) { |
| NtQuerySystemInformation = (NtQuerySystemInformation_t) GetProcAddress( ntdll, "NtQuerySystemInformation" ); |
| } |
| KMP_DEBUG_ASSERT( NtQuerySystemInformation != NULL ); |
| |
| #if KMP_GROUP_AFFINITY |
| // |
| // Load kernel32.dll. |
| // Same caveat - must use full system path name. |
| // |
| if ( path_size > 0 && path_size < path.size ) { |
| // |
| // Truncate the buffer back to just the system path length, |
| // discarding "\\ntdll.dll", and replacing it with "kernel32.dll". |
| // |
| path.used = path_size; |
| __kmp_str_buf_print( & path, "\\%s", "kernel32.dll" ); |
| |
| // |
| // Load kernel32.dll using full path. |
| // |
| kernel32 = GetModuleHandle( path.str ); |
| KA_TRACE( 10, ("__kmp_runtime_initialize: kernel32.dll = %s\n", path.str ) ); |
| |
| // |
| // Load the function pointers to kernel32.dll routines |
| // that may or may not exist on this system. |
| // |
| if ( kernel32 != NULL ) { |
| __kmp_GetActiveProcessorCount = (kmp_GetActiveProcessorCount_t) GetProcAddress( kernel32, "GetActiveProcessorCount" ); |
| __kmp_GetActiveProcessorGroupCount = (kmp_GetActiveProcessorGroupCount_t) GetProcAddress( kernel32, "GetActiveProcessorGroupCount" ); |
| __kmp_GetThreadGroupAffinity = (kmp_GetThreadGroupAffinity_t) GetProcAddress( kernel32, "GetThreadGroupAffinity" ); |
| __kmp_SetThreadGroupAffinity = (kmp_SetThreadGroupAffinity_t) GetProcAddress( kernel32, "SetThreadGroupAffinity" ); |
| |
| KA_TRACE( 10, ("__kmp_runtime_initialize: __kmp_GetActiveProcessorCount = %p\n", __kmp_GetActiveProcessorCount ) ); |
| KA_TRACE( 10, ("__kmp_runtime_initialize: __kmp_GetActiveProcessorGroupCount = %p\n", __kmp_GetActiveProcessorGroupCount ) ); |
| KA_TRACE( 10, ("__kmp_runtime_initialize:__kmp_GetThreadGroupAffinity = %p\n", __kmp_GetThreadGroupAffinity ) ); |
| KA_TRACE( 10, ("__kmp_runtime_initialize: __kmp_SetThreadGroupAffinity = %p\n", __kmp_SetThreadGroupAffinity ) ); |
| KA_TRACE( 10, ("__kmp_runtime_initialize: sizeof(kmp_affin_mask_t) = %d\n", sizeof(kmp_affin_mask_t) ) ); |
| |
| // |
| // See if group affinity is supported on this system. |
| // If so, calculate the #groups and #procs. |
| // |
| // Group affinity was introduced with Windows* 7 OS and |
| // Windows* Server 2008 R2 OS. |
| // |
| if ( ( __kmp_GetActiveProcessorCount != NULL ) |
| && ( __kmp_GetActiveProcessorGroupCount != NULL ) |
| && ( __kmp_GetThreadGroupAffinity != NULL ) |
| && ( __kmp_SetThreadGroupAffinity != NULL ) |
| && ( ( __kmp_num_proc_groups |
| = __kmp_GetActiveProcessorGroupCount() ) > 1 ) ) { |
| // |
| // Calculate the total number of active OS procs. |
| // |
| int i; |
| |
| KA_TRACE( 10, ("__kmp_runtime_initialize: %d processor groups detected\n", __kmp_num_proc_groups ) ); |
| |
| __kmp_xproc = 0; |
| |
| for ( i = 0; i < __kmp_num_proc_groups; i++ ) { |
| DWORD size = __kmp_GetActiveProcessorCount( i ); |
| __kmp_xproc += size; |
| KA_TRACE( 10, ("__kmp_runtime_initialize: proc group %d size = %d\n", i, size ) ); |
| } |
| } |
| else { |
| KA_TRACE( 10, ("__kmp_runtime_initialize: %d processor groups detected\n", __kmp_num_proc_groups ) ); |
| } |
| } |
| } |
| if ( __kmp_num_proc_groups <= 1 ) { |
| GetSystemInfo( & info ); |
| __kmp_xproc = info.dwNumberOfProcessors; |
| } |
| #else |
| GetSystemInfo( & info ); |
| __kmp_xproc = info.dwNumberOfProcessors; |
| #endif /* KMP_GROUP_AFFINITY */ |
| |
| // |
| // If the OS said there were 0 procs, take a guess and use a value of 2. |
| // This is done for Linux* OS, also. Do we need error / warning? |
| // |
| if ( __kmp_xproc <= 0 ) { |
| __kmp_xproc = 2; |
| } |
| |
| KA_TRACE( 5, ("__kmp_runtime_initialize: total processors = %d\n", __kmp_xproc) ); |
| |
| __kmp_str_buf_free( & path ); |
| |
| #if USE_ITT_BUILD |
| __kmp_itt_initialize(); |
| #endif /* USE_ITT_BUILD */ |
| |
| __kmp_init_runtime = TRUE; |
| } // __kmp_runtime_initialize |
| |
| void |
| __kmp_runtime_destroy( void ) |
| { |
| if ( ! __kmp_init_runtime ) { |
| return; |
| } |
| |
| #if USE_ITT_BUILD |
| __kmp_itt_destroy(); |
| #endif /* USE_ITT_BUILD */ |
| |
| /* we can't DeleteCriticalsection( & __kmp_win32_section ); */ |
| /* due to the KX_TRACE() commands */ |
| KA_TRACE( 40, ("__kmp_runtime_destroy\n" )); |
| |
| if( __kmp_gtid_threadprivate_key ) { |
| TlsFree( __kmp_gtid_threadprivate_key ); |
| __kmp_gtid_threadprivate_key = 0; |
| } |
| |
| __kmp_affinity_uninitialize(); |
| DeleteCriticalSection( & __kmp_win32_section ); |
| |
| ntdll = NULL; |
| NtQuerySystemInformation = NULL; |
| |
| #if KMP_ARCH_X86_64 |
| kernel32 = NULL; |
| __kmp_GetActiveProcessorCount = NULL; |
| __kmp_GetActiveProcessorGroupCount = NULL; |
| __kmp_GetThreadGroupAffinity = NULL; |
| __kmp_SetThreadGroupAffinity = NULL; |
| #endif // KMP_ARCH_X86_64 |
| |
| __kmp_init_runtime = FALSE; |
| } |
| |
| |
| void |
| __kmp_terminate_thread( int gtid ) |
| { |
| kmp_info_t *th = __kmp_threads[ gtid ]; |
| |
| if( !th ) return; |
| |
| KA_TRACE( 10, ("__kmp_terminate_thread: kill (%d)\n", gtid ) ); |
| |
| if (TerminateThread( th->th.th_info.ds.ds_thread, (DWORD) -1) == FALSE) { |
| /* It's OK, the thread may have exited already */ |
| } |
| __kmp_free_handle( th->th.th_info.ds.ds_thread ); |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void |
| __kmp_clear_system_time( void ) |
| { |
| BOOL status; |
| LARGE_INTEGER time; |
| status = QueryPerformanceCounter( & time ); |
| __kmp_win32_time = (kmp_int64) time.QuadPart; |
| } |
| |
| void |
| __kmp_initialize_system_tick( void ) |
| { |
| { |
| BOOL status; |
| LARGE_INTEGER freq; |
| |
| status = QueryPerformanceFrequency( & freq ); |
| if (! status) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( FunctionError, "QueryPerformanceFrequency()" ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| |
| } |
| else { |
| __kmp_win32_tick = ((double) 1.0) / (double) freq.QuadPart; |
| } |
| } |
| } |
| |
| /* Calculate the elapsed wall clock time for the user */ |
| |
| void |
| __kmp_elapsed( double *t ) |
| { |
| BOOL status; |
| LARGE_INTEGER now; |
| status = QueryPerformanceCounter( & now ); |
| *t = ((double) now.QuadPart) * __kmp_win32_tick; |
| } |
| |
| /* Calculate the elapsed wall clock tick for the user */ |
| |
| void |
| __kmp_elapsed_tick( double *t ) |
| { |
| *t = __kmp_win32_tick; |
| } |
| |
| void |
| __kmp_read_system_time( double *delta ) |
| { |
| if (delta != NULL) { |
| BOOL status; |
| LARGE_INTEGER now; |
| |
| status = QueryPerformanceCounter( & now ); |
| |
| *delta = ((double) (((kmp_int64) now.QuadPart) - __kmp_win32_time)) |
| * __kmp_win32_tick; |
| } |
| } |
| |
| /* Return the current time stamp in nsec */ |
| kmp_uint64 |
| __kmp_now_nsec() |
| { |
| LARGE_INTEGER now; |
| QueryPerformanceCounter(&now); |
| return 1e9 * __kmp_win32_tick * now.QuadPart; |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| void * __stdcall |
| __kmp_launch_worker( void *arg ) |
| { |
| volatile void *stack_data; |
| void *exit_val; |
| void *padding = 0; |
| kmp_info_t *this_thr = (kmp_info_t *) arg; |
| int gtid; |
| |
| gtid = this_thr->th.th_info.ds.ds_gtid; |
| __kmp_gtid_set_specific( gtid ); |
| #ifdef KMP_TDATA_GTID |
| #error "This define causes problems with LoadLibrary() + declspec(thread) " \ |
| "on Windows* OS. See CQ50564, tests kmp_load_library*.c and this MSDN " \ |
| "reference: http://support.microsoft.com/kb/118816" |
| //__kmp_gtid = gtid; |
| #endif |
| |
| #if USE_ITT_BUILD |
| __kmp_itt_thread_name( gtid ); |
| #endif /* USE_ITT_BUILD */ |
| |
| __kmp_affinity_set_init_mask( gtid, FALSE ); |
| |
| #if KMP_ARCH_X86 || KMP_ARCH_X86_64 |
| // |
| // Set the FP control regs to be a copy of |
| // the parallel initialization thread's. |
| // |
| __kmp_clear_x87_fpu_status_word(); |
| __kmp_load_x87_fpu_control_word( &__kmp_init_x87_fpu_control_word ); |
| __kmp_load_mxcsr( &__kmp_init_mxcsr ); |
| #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ |
| |
| if ( __kmp_stkoffset > 0 && gtid > 0 ) { |
| padding = KMP_ALLOCA( gtid * __kmp_stkoffset ); |
| } |
| |
| KMP_FSYNC_RELEASING( &this_thr -> th.th_info.ds.ds_alive ); |
| this_thr -> th.th_info.ds.ds_thread_id = GetCurrentThreadId(); |
| TCW_4( this_thr -> th.th_info.ds.ds_alive, TRUE ); |
| |
| if ( TCR_4(__kmp_gtid_mode) < 2 ) { // check stack only if it is used to get gtid |
| TCW_PTR(this_thr->th.th_info.ds.ds_stackbase, &stack_data); |
| KMP_ASSERT( this_thr -> th.th_info.ds.ds_stackgrow == FALSE ); |
| __kmp_check_stack_overlap( this_thr ); |
| } |
| KMP_MB(); |
| exit_val = __kmp_launch_thread( this_thr ); |
| KMP_FSYNC_RELEASING( &this_thr -> th.th_info.ds.ds_alive ); |
| TCW_4( this_thr -> th.th_info.ds.ds_alive, FALSE ); |
| KMP_MB(); |
| return exit_val; |
| } |
| |
| #if KMP_USE_MONITOR |
| /* The monitor thread controls all of the threads in the complex */ |
| |
| void * __stdcall |
| __kmp_launch_monitor( void *arg ) |
| { |
| DWORD wait_status; |
| kmp_thread_t monitor; |
| int status; |
| int interval; |
| kmp_info_t *this_thr = (kmp_info_t *) arg; |
| |
| KMP_DEBUG_ASSERT(__kmp_init_monitor); |
| TCW_4( __kmp_init_monitor, 2 ); // AC: Signal the library that monitor has started |
| // TODO: hide "2" in enum (like {true,false,started}) |
| this_thr -> th.th_info.ds.ds_thread_id = GetCurrentThreadId(); |
| TCW_4( this_thr -> th.th_info.ds.ds_alive, TRUE ); |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| KA_TRACE( 10, ("__kmp_launch_monitor: launched\n" ) ); |
| |
| monitor = GetCurrentThread(); |
| |
| /* set thread priority */ |
| status = SetThreadPriority( monitor, THREAD_PRIORITY_HIGHEST ); |
| if (! status) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantSetThreadPriority ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| |
| /* register us as monitor */ |
| __kmp_gtid_set_specific( KMP_GTID_MONITOR ); |
| #ifdef KMP_TDATA_GTID |
| #error "This define causes problems with LoadLibrary() + declspec(thread) " \ |
| "on Windows* OS. See CQ50564, tests kmp_load_library*.c and this MSDN " \ |
| "reference: http://support.microsoft.com/kb/118816" |
| //__kmp_gtid = KMP_GTID_MONITOR; |
| #endif |
| |
| #if USE_ITT_BUILD |
| __kmp_itt_thread_ignore(); // Instruct Intel(R) Threading Tools to ignore monitor thread. |
| #endif /* USE_ITT_BUILD */ |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| interval = ( 1000 / __kmp_monitor_wakeups ); /* in milliseconds */ |
| |
| while (! TCR_4(__kmp_global.g.g_done)) { |
| /* This thread monitors the state of the system */ |
| |
| KA_TRACE( 15, ( "__kmp_launch_monitor: update\n" ) ); |
| |
| wait_status = WaitForSingleObject( __kmp_monitor_ev, interval ); |
| |
| if (wait_status == WAIT_TIMEOUT) { |
| TCW_4( __kmp_global.g.g_time.dt.t_value, |
| TCR_4( __kmp_global.g.g_time.dt.t_value ) + 1 ); |
| } |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| } |
| |
| KA_TRACE( 10, ("__kmp_launch_monitor: finished\n" ) ); |
| |
| status = SetThreadPriority( monitor, THREAD_PRIORITY_NORMAL ); |
| if (! status) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantSetThreadPriority ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| |
| if (__kmp_global.g.g_abort != 0) { |
| /* now we need to terminate the worker threads */ |
| /* the value of t_abort is the signal we caught */ |
| |
| int gtid; |
| |
| KA_TRACE( 10, ("__kmp_launch_monitor: terminate sig=%d\n", (__kmp_global.g.g_abort) ) ); |
| |
| /* terminate the OpenMP worker threads */ |
| /* TODO this is not valid for sibling threads!! |
| * the uber master might not be 0 anymore.. */ |
| for (gtid = 1; gtid < __kmp_threads_capacity; ++gtid) |
| __kmp_terminate_thread( gtid ); |
| |
| __kmp_cleanup(); |
| |
| Sleep( 0 ); |
| |
| KA_TRACE( 10, ("__kmp_launch_monitor: raise sig=%d\n", (__kmp_global.g.g_abort) ) ); |
| |
| if (__kmp_global.g.g_abort > 0) { |
| raise( __kmp_global.g.g_abort ); |
| } |
| } |
| |
| TCW_4( this_thr -> th.th_info.ds.ds_alive, FALSE ); |
| |
| KMP_MB(); |
| return arg; |
| } |
| #endif |
| |
| void |
| __kmp_create_worker( int gtid, kmp_info_t *th, size_t stack_size ) |
| { |
| kmp_thread_t handle; |
| DWORD idThread; |
| |
| KA_TRACE( 10, ("__kmp_create_worker: try to create thread (%d)\n", gtid ) ); |
| |
| th->th.th_info.ds.ds_gtid = gtid; |
| |
| if ( KMP_UBER_GTID(gtid) ) { |
| int stack_data; |
| |
| /* TODO: GetCurrentThread() returns a pseudo-handle that is unsuitable for other threads to use. |
| Is it appropriate to just use GetCurrentThread? When should we close this handle? When |
| unregistering the root? |
| */ |
| { |
| BOOL rc; |
| rc = DuplicateHandle( |
| GetCurrentProcess(), |
| GetCurrentThread(), |
| GetCurrentProcess(), |
| &th->th.th_info.ds.ds_thread, |
| 0, |
| FALSE, |
| DUPLICATE_SAME_ACCESS |
| ); |
| KMP_ASSERT( rc ); |
| KA_TRACE( 10, (" __kmp_create_worker: ROOT Handle duplicated, th = %p, handle = %" KMP_UINTPTR_SPEC "\n", |
| (LPVOID)th, |
| th->th.th_info.ds.ds_thread ) ); |
| th->th.th_info.ds.ds_thread_id = GetCurrentThreadId(); |
| } |
| if ( TCR_4(__kmp_gtid_mode) < 2 ) { // check stack only if it is used to get gtid |
| /* we will dynamically update the stack range if gtid_mode == 1 */ |
| TCW_PTR(th->th.th_info.ds.ds_stackbase, &stack_data); |
| TCW_PTR(th->th.th_info.ds.ds_stacksize, 0); |
| TCW_4(th->th.th_info.ds.ds_stackgrow, TRUE); |
| __kmp_check_stack_overlap( th ); |
| } |
| } |
| else { |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| /* Set stack size for this thread now. */ |
| KA_TRACE( 10, ( "__kmp_create_worker: stack_size = %" KMP_SIZE_T_SPEC |
| " bytes\n", stack_size ) ); |
| |
| stack_size += gtid * __kmp_stkoffset; |
| |
| TCW_PTR(th->th.th_info.ds.ds_stacksize, stack_size); |
| TCW_4(th->th.th_info.ds.ds_stackgrow, FALSE); |
| |
| KA_TRACE( 10, ( "__kmp_create_worker: (before) stack_size = %" |
| KMP_SIZE_T_SPEC |
| " bytes, &__kmp_launch_worker = %p, th = %p, " |
| "&idThread = %p\n", |
| (SIZE_T) stack_size, |
| (LPTHREAD_START_ROUTINE) & __kmp_launch_worker, |
| (LPVOID) th, &idThread ) ); |
| |
| handle = CreateThread( NULL, (SIZE_T) stack_size, |
| (LPTHREAD_START_ROUTINE) __kmp_launch_worker, |
| (LPVOID) th, STACK_SIZE_PARAM_IS_A_RESERVATION, &idThread ); |
| |
| KA_TRACE( 10, ( "__kmp_create_worker: (after) stack_size = %" |
| KMP_SIZE_T_SPEC |
| " bytes, &__kmp_launch_worker = %p, th = %p, " |
| "idThread = %u, handle = %" KMP_UINTPTR_SPEC "\n", |
| (SIZE_T) stack_size, |
| (LPTHREAD_START_ROUTINE) & __kmp_launch_worker, |
| (LPVOID) th, idThread, handle ) ); |
| |
| if ( handle == 0 ) { |
| DWORD error = GetLastError(); |
| __kmp_msg(kmp_ms_fatal, KMP_MSG( CantCreateThread ), KMP_ERR( error ), __kmp_msg_null); |
| } else { |
| th->th.th_info.ds.ds_thread = handle; |
| } |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| } |
| |
| KA_TRACE( 10, ("__kmp_create_worker: done creating thread (%d)\n", gtid ) ); |
| } |
| |
| int |
| __kmp_still_running(kmp_info_t *th) { |
| return (WAIT_TIMEOUT == WaitForSingleObject( th->th.th_info.ds.ds_thread, 0)); |
| } |
| |
| #if KMP_USE_MONITOR |
| void |
| __kmp_create_monitor( kmp_info_t *th ) |
| { |
| kmp_thread_t handle; |
| DWORD idThread; |
| int ideal, new_ideal; |
| |
| if( __kmp_dflt_blocktime == KMP_MAX_BLOCKTIME ) { |
| // We don't need monitor thread in case of MAX_BLOCKTIME |
| KA_TRACE( 10, ("__kmp_create_monitor: skipping monitor thread because of MAX blocktime\n" ) ); |
| th->th.th_info.ds.ds_tid = 0; // this makes reap_monitor no-op |
| th->th.th_info.ds.ds_gtid = 0; |
| TCW_4( __kmp_init_monitor, 2 ); // Signal to stop waiting for monitor creation |
| return; |
| } |
| KA_TRACE( 10, ("__kmp_create_monitor: try to create monitor\n" ) ); |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| __kmp_monitor_ev = CreateEvent( NULL, TRUE, FALSE, NULL ); |
| if ( __kmp_monitor_ev == NULL ) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantCreateEvent ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| }; // if |
| #if USE_ITT_BUILD |
| __kmp_itt_system_object_created( __kmp_monitor_ev, "Event" ); |
| #endif /* USE_ITT_BUILD */ |
| |
| th->th.th_info.ds.ds_tid = KMP_GTID_MONITOR; |
| th->th.th_info.ds.ds_gtid = KMP_GTID_MONITOR; |
| |
| // FIXME - on Windows* OS, if __kmp_monitor_stksize = 0, figure out how |
| // to automatically expand stacksize based on CreateThread error code. |
| if ( __kmp_monitor_stksize == 0 ) { |
| __kmp_monitor_stksize = KMP_DEFAULT_MONITOR_STKSIZE; |
| } |
| if ( __kmp_monitor_stksize < __kmp_sys_min_stksize ) { |
| __kmp_monitor_stksize = __kmp_sys_min_stksize; |
| } |
| |
| KA_TRACE( 10, ("__kmp_create_monitor: requested stacksize = %d bytes\n", |
| (int) __kmp_monitor_stksize ) ); |
| |
| TCW_4( __kmp_global.g.g_time.dt.t_value, 0 ); |
| |
| handle = CreateThread( NULL, (SIZE_T) __kmp_monitor_stksize, |
| (LPTHREAD_START_ROUTINE) __kmp_launch_monitor, |
| (LPVOID) th, STACK_SIZE_PARAM_IS_A_RESERVATION, &idThread ); |
| if (handle == 0) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantCreateThread ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| else |
| th->th.th_info.ds.ds_thread = handle; |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| KA_TRACE( 10, ("__kmp_create_monitor: monitor created %p\n", |
| (void *) th->th.th_info.ds.ds_thread ) ); |
| } |
| #endif |
| |
| /* |
| Check to see if thread is still alive. |
| |
| NOTE: The ExitProcess(code) system call causes all threads to Terminate |
| with a exit_val = code. Because of this we can not rely on |
| exit_val having any particular value. So this routine may |
| return STILL_ALIVE in exit_val even after the thread is dead. |
| */ |
| |
| int |
| __kmp_is_thread_alive( kmp_info_t * th, DWORD *exit_val ) |
| { |
| DWORD rc; |
| rc = GetExitCodeThread( th->th.th_info.ds.ds_thread, exit_val ); |
| if ( rc == 0 ) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( FunctionError, "GetExitCodeThread()" ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| }; // if |
| return ( *exit_val == STILL_ACTIVE ); |
| } |
| |
| |
| void |
| __kmp_exit_thread( |
| int exit_status |
| ) { |
| ExitThread( exit_status ); |
| } // __kmp_exit_thread |
| |
| /* |
| This is a common part for both __kmp_reap_worker() and __kmp_reap_monitor(). |
| */ |
| static void |
| __kmp_reap_common( kmp_info_t * th ) |
| { |
| DWORD exit_val; |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| KA_TRACE( 10, ( "__kmp_reap_common: try to reap (%d)\n", th->th.th_info.ds.ds_gtid ) ); |
| |
| /* |
| 2006-10-19: |
| |
| There are two opposite situations: |
| |
| 1. Windows* OS keep thread alive after it resets ds_alive flag and exits from thread |
| function. (For example, see C70770/Q394281 "unloading of dll based on OMP is very |
| slow".) |
| 2. Windows* OS may kill thread before it resets ds_alive flag. |
| |
| Right solution seems to be waiting for *either* thread termination *or* ds_alive resetting. |
| |
| */ |
| |
| { |
| // TODO: This code is very similar to KMP_WAIT_YIELD. Need to generalize KMP_WAIT_YIELD to |
| // cover this usage also. |
| void * obj = NULL; |
| register kmp_uint32 spins; |
| #if USE_ITT_BUILD |
| KMP_FSYNC_SPIN_INIT( obj, (void*) & th->th.th_info.ds.ds_alive ); |
| #endif /* USE_ITT_BUILD */ |
| KMP_INIT_YIELD( spins ); |
| do { |
| #if USE_ITT_BUILD |
| KMP_FSYNC_SPIN_PREPARE( obj ); |
| #endif /* USE_ITT_BUILD */ |
| __kmp_is_thread_alive( th, &exit_val ); |
| KMP_YIELD( TCR_4(__kmp_nth) > __kmp_avail_proc ); |
| KMP_YIELD_SPIN( spins ); |
| } while ( exit_val == STILL_ACTIVE && TCR_4( th->th.th_info.ds.ds_alive ) ); |
| #if USE_ITT_BUILD |
| if ( exit_val == STILL_ACTIVE ) { |
| KMP_FSYNC_CANCEL( obj ); |
| } else { |
| KMP_FSYNC_SPIN_ACQUIRED( obj ); |
| }; // if |
| #endif /* USE_ITT_BUILD */ |
| } |
| |
| __kmp_free_handle( th->th.th_info.ds.ds_thread ); |
| |
| /* |
| * NOTE: The ExitProcess(code) system call causes all threads to Terminate |
| * with a exit_val = code. Because of this we can not rely on |
| * exit_val having any particular value. |
| */ |
| if ( exit_val == STILL_ACTIVE ) { |
| KA_TRACE( 1, ( "__kmp_reap_common: thread still active.\n" ) ); |
| } else if ( (void *) exit_val != (void *) th) { |
| KA_TRACE( 1, ( "__kmp_reap_common: ExitProcess / TerminateThread used?\n" ) ); |
| }; // if |
| |
| KA_TRACE( 10, |
| ( |
| "__kmp_reap_common: done reaping (%d), handle = %" KMP_UINTPTR_SPEC "\n", |
| th->th.th_info.ds.ds_gtid, |
| th->th.th_info.ds.ds_thread |
| ) |
| ); |
| |
| th->th.th_info.ds.ds_thread = 0; |
| th->th.th_info.ds.ds_tid = KMP_GTID_DNE; |
| th->th.th_info.ds.ds_gtid = KMP_GTID_DNE; |
| th->th.th_info.ds.ds_thread_id = 0; |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| } |
| |
| #if KMP_USE_MONITOR |
| void |
| __kmp_reap_monitor( kmp_info_t *th ) |
| { |
| int status; |
| |
| KA_TRACE( 10, ("__kmp_reap_monitor: try to reap %p\n", |
| (void *) th->th.th_info.ds.ds_thread ) ); |
| |
| // If monitor has been created, its tid and gtid should be KMP_GTID_MONITOR. |
| // If both tid and gtid are 0, it means the monitor did not ever start. |
| // If both tid and gtid are KMP_GTID_DNE, the monitor has been shut down. |
| KMP_DEBUG_ASSERT( th->th.th_info.ds.ds_tid == th->th.th_info.ds.ds_gtid ); |
| if ( th->th.th_info.ds.ds_gtid != KMP_GTID_MONITOR ) { |
| KA_TRACE( 10, ("__kmp_reap_monitor: monitor did not start, returning\n") ); |
| return; |
| }; // if |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| |
| status = SetEvent( __kmp_monitor_ev ); |
| if ( status == FALSE ) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantSetEvent ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| KA_TRACE( 10, ( "__kmp_reap_monitor: reaping thread (%d)\n", th->th.th_info.ds.ds_gtid ) ); |
| __kmp_reap_common( th ); |
| |
| __kmp_free_handle( __kmp_monitor_ev ); |
| |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| } |
| #endif |
| |
| void |
| __kmp_reap_worker( kmp_info_t * th ) |
| { |
| KA_TRACE( 10, ( "__kmp_reap_worker: reaping thread (%d)\n", th->th.th_info.ds.ds_gtid ) ); |
| __kmp_reap_common( th ); |
| } |
| |
| /* ------------------------------------------------------------------------ */ |
| /* ------------------------------------------------------------------------ */ |
| |
| #if KMP_HANDLE_SIGNALS |
| |
| |
| static void |
| __kmp_team_handler( int signo ) |
| { |
| if ( __kmp_global.g.g_abort == 0 ) { |
| // Stage 1 signal handler, let's shut down all of the threads. |
| if ( __kmp_debug_buf ) { |
| __kmp_dump_debug_buffer(); |
| }; // if |
| KMP_MB(); // Flush all pending memory write invalidates. |
| TCW_4( __kmp_global.g.g_abort, signo ); |
| KMP_MB(); // Flush all pending memory write invalidates. |
| TCW_4( __kmp_global.g.g_done, TRUE ); |
| KMP_MB(); // Flush all pending memory write invalidates. |
| } |
| } // __kmp_team_handler |
| |
| |
| |
| static |
| sig_func_t __kmp_signal( int signum, sig_func_t handler ) { |
| sig_func_t old = signal( signum, handler ); |
| if ( old == SIG_ERR ) { |
| int error = errno; |
| __kmp_msg( kmp_ms_fatal, KMP_MSG( FunctionError, "signal" ), KMP_ERR( error ), __kmp_msg_null ); |
| }; // if |
| return old; |
| } |
| |
| static void |
| __kmp_install_one_handler( |
| int sig, |
| sig_func_t handler, |
| int parallel_init |
| ) { |
| sig_func_t old; |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| KB_TRACE( 60, ("__kmp_install_one_handler: called: sig=%d\n", sig ) ); |
| if ( parallel_init ) { |
| old = __kmp_signal( sig, handler ); |
| // SIG_DFL on Windows* OS in NULL or 0. |
| if ( old == __kmp_sighldrs[ sig ] ) { |
| __kmp_siginstalled[ sig ] = 1; |
| } else { |
| // Restore/keep user's handler if one previously installed. |
| old = __kmp_signal( sig, old ); |
| }; // if |
| } else { |
| // Save initial/system signal handlers to see if user handlers installed. |
| // 2009-09-23: It is a dead code. On Windows* OS __kmp_install_signals called once with |
| // parallel_init == TRUE. |
| old = __kmp_signal( sig, SIG_DFL ); |
| __kmp_sighldrs[ sig ] = old; |
| __kmp_signal( sig, old ); |
| }; // if |
| KMP_MB(); /* Flush all pending memory write invalidates. */ |
| } // __kmp_install_one_handler |
| |
| static void |
| __kmp_remove_one_handler( int sig ) { |
| if ( __kmp_siginstalled[ sig ] ) { |
| sig_func_t old; |
| KMP_MB(); // Flush all pending memory write invalidates. |
| KB_TRACE( 60, ( "__kmp_remove_one_handler: called: sig=%d\n", sig ) ); |
| old = __kmp_signal( sig, __kmp_sighldrs[ sig ] ); |
| if ( old != __kmp_team_handler ) { |
| KB_TRACE( 10, ( "__kmp_remove_one_handler: oops, not our handler, restoring: sig=%d\n", sig ) ); |
| old = __kmp_signal( sig, old ); |
| }; // if |
| __kmp_sighldrs[ sig ] = NULL; |
| __kmp_siginstalled[ sig ] = 0; |
| KMP_MB(); // Flush all pending memory write invalidates. |
| }; // if |
| } // __kmp_remove_one_handler |
| |
| |
| void |
| __kmp_install_signals( int parallel_init ) |
| { |
| KB_TRACE( 10, ( "__kmp_install_signals: called\n" ) ); |
| if ( ! __kmp_handle_signals ) { |
| KB_TRACE( 10, ( "__kmp_install_signals: KMP_HANDLE_SIGNALS is false - handlers not installed\n" ) ); |
| return; |
| }; // if |
| __kmp_install_one_handler( SIGINT, __kmp_team_handler, parallel_init ); |
| __kmp_install_one_handler( SIGILL, __kmp_team_handler, parallel_init ); |
| __kmp_install_one_handler( SIGABRT, __kmp_team_handler, parallel_init ); |
| __kmp_install_one_handler( SIGFPE, __kmp_team_handler, parallel_init ); |
| __kmp_install_one_handler( SIGSEGV, __kmp_team_handler, parallel_init ); |
| __kmp_install_one_handler( SIGTERM, __kmp_team_handler, parallel_init ); |
| } // __kmp_install_signals |
| |
| |
| void |
| __kmp_remove_signals( void ) |
| { |
| int sig; |
| KB_TRACE( 10, ("__kmp_remove_signals: called\n" ) ); |
| for ( sig = 1; sig < NSIG; ++ sig ) { |
| __kmp_remove_one_handler( sig ); |
| }; // for sig |
| } // __kmp_remove_signals |
| |
| |
| #endif // KMP_HANDLE_SIGNALS |
| |
| /* Put the thread to sleep for a time period */ |
| void |
| __kmp_thread_sleep( int millis ) |
| { |
| DWORD status; |
| |
| status = SleepEx( (DWORD) millis, FALSE ); |
| if ( status ) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( FunctionError, "SleepEx()" ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| } |
| |
| /* Determine whether the given address is mapped into the current address space. */ |
| int |
| __kmp_is_address_mapped( void * addr ) |
| { |
| DWORD status; |
| MEMORY_BASIC_INFORMATION lpBuffer; |
| SIZE_T dwLength; |
| |
| dwLength = sizeof(MEMORY_BASIC_INFORMATION); |
| |
| status = VirtualQuery( addr, &lpBuffer, dwLength ); |
| |
| return !((( lpBuffer.State == MEM_RESERVE) || ( lpBuffer.State == MEM_FREE )) || |
| (( lpBuffer.Protect == PAGE_NOACCESS ) || ( lpBuffer.Protect == PAGE_EXECUTE ))); |
| } |
| |
| kmp_uint64 |
| __kmp_hardware_timestamp(void) |
| { |
| kmp_uint64 r = 0; |
| |
| QueryPerformanceCounter((LARGE_INTEGER*) &r); |
| return r; |
| } |
| |
| /* Free handle and check the error code */ |
| void |
| __kmp_free_handle( kmp_thread_t tHandle ) |
| { |
| /* called with parameter type HANDLE also, thus suppose kmp_thread_t defined as HANDLE */ |
| BOOL rc; |
| rc = CloseHandle( tHandle ); |
| if ( !rc ) { |
| DWORD error = GetLastError(); |
| __kmp_msg( |
| kmp_ms_fatal, |
| KMP_MSG( CantCloseHandle ), |
| KMP_ERR( error ), |
| __kmp_msg_null |
| ); |
| } |
| } |
| |
| int |
| __kmp_get_load_balance( int max ) { |
| |
| static ULONG glb_buff_size = 100 * 1024; |
| |
| static int glb_running_threads = 0; /* Saved count of the running threads for the thread balance algortihm */ |
| static double glb_call_time = 0; /* Thread balance algorithm call time */ |
| |
| int running_threads = 0; // Number of running threads in the system. |
| NTSTATUS status = 0; |
| ULONG buff_size = 0; |
| ULONG info_size = 0; |
| void * buffer = NULL; |
| PSYSTEM_PROCESS_INFORMATION spi = NULL; |
| int first_time = 1; |
| |
| double call_time = 0.0; //start, finish; |
| |
| __kmp_elapsed( & call_time ); |
| |
| if ( glb_call_time && |
| ( call_time - glb_call_time < __kmp_load_balance_interval ) ) { |
| running_threads = glb_running_threads; |
| goto finish; |
| } |
| glb_call_time = call_time; |
| |
| // Do not spend time on running algorithm if we have a permanent error. |
| if ( NtQuerySystemInformation == NULL ) { |
| running_threads = -1; |
| goto finish; |
| }; // if |
| |
| if ( max <= 0 ) { |
| max = INT_MAX; |
| }; // if |
| |
| do { |
| |
| if ( first_time ) { |
| buff_size = glb_buff_size; |
| } else { |
| buff_size = 2 * buff_size; |
| } |
| |
| buffer = KMP_INTERNAL_REALLOC( buffer, buff_size ); |
| if ( buffer == NULL ) { |
| running_threads = -1; |
| goto finish; |
| }; // if |
| status = NtQuerySystemInformation( SystemProcessInformation, buffer, buff_size, & info_size ); |
| first_time = 0; |
| |
| } while ( status == STATUS_INFO_LENGTH_MISMATCH ); |
| glb_buff_size = buff_size; |
| |
| #define CHECK( cond ) \ |
| { \ |
| KMP_DEBUG_ASSERT( cond ); \ |
| if ( ! ( cond ) ) { \ |
| running_threads = -1; \ |
| goto finish; \ |
| } \ |
| } |
| |
| CHECK( buff_size >= info_size ); |
| spi = PSYSTEM_PROCESS_INFORMATION( buffer ); |
| for ( ; ; ) { |
| ptrdiff_t offset = uintptr_t( spi ) - uintptr_t( buffer ); |
| CHECK( 0 <= offset && offset + sizeof( SYSTEM_PROCESS_INFORMATION ) < info_size ); |
| HANDLE pid = spi->ProcessId; |
| ULONG num = spi->NumberOfThreads; |
| CHECK( num >= 1 ); |
| size_t spi_size = sizeof( SYSTEM_PROCESS_INFORMATION ) + sizeof( SYSTEM_THREAD ) * ( num - 1 ); |
| CHECK( offset + spi_size < info_size ); // Make sure process info record fits the buffer. |
| if ( spi->NextEntryOffset != 0 ) { |
| CHECK( spi_size <= spi->NextEntryOffset ); // And do not overlap with the next record. |
| }; // if |
| // pid == 0 corresponds to the System Idle Process. It always has running threads |
| // on all cores. So, we don't consider the running threads of this process. |
| if ( pid != 0 ) { |
| for ( int i = 0; i < num; ++ i ) { |
| THREAD_STATE state = spi->Threads[ i ].State; |
| // Count threads that have Ready or Running state. |
| // !!! TODO: Why comment does not match the code??? |
| if ( state == StateRunning ) { |
| ++ running_threads; |
| // Stop counting running threads if the number is already greater than |
| // the number of available cores |
| if ( running_threads >= max ) { |
| goto finish; |
| } |
| } // if |
| }; // for i |
| } // if |
| if ( spi->NextEntryOffset == 0 ) { |
| break; |
| }; // if |
| spi = PSYSTEM_PROCESS_INFORMATION( uintptr_t( spi ) + spi->NextEntryOffset ); |
| }; // forever |
| |
| #undef CHECK |
| |
| finish: // Clean up and exit. |
| |
| if ( buffer != NULL ) { |
| KMP_INTERNAL_FREE( buffer ); |
| }; // if |
| |
| glb_running_threads = running_threads; |
| |
| return running_threads; |
| |
| } //__kmp_get_load_balance() |
| |