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Diffstat (limited to 'EmulatorPkg/Unix/Host/Pthreads.c')
| -rw-r--r-- | EmulatorPkg/Unix/Host/Pthreads.c | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/EmulatorPkg/Unix/Host/Pthreads.c b/EmulatorPkg/Unix/Host/Pthreads.c deleted file mode 100644 index c60c298099..0000000000 --- a/EmulatorPkg/Unix/Host/Pthreads.c +++ /dev/null @@ -1,235 +0,0 @@ -/*++ @file - POSIX Pthreads to emulate APs and implement threads - -Copyright (c) 2011, Apple Inc. All rights reserved. -Copyright (c) 2011, Intel Corporation. All rights reserved.<BR> - -This program and the accompanying materials -are licensed and made available under the terms and conditions of the BSD License -which accompanies this distribution. The full text of the license may be found at -http://opensource.org/licenses/bsd-license.php - -THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. - - -**/ - -#include "Host.h" -#include <pthread.h> - - -UINTN -EFIAPI -PthreadMutexLock ( - IN VOID *Mutex - ) -{ - return (UINTN)pthread_mutex_lock ((pthread_mutex_t *)Mutex); -} - - - -UINTN -EFIAPI -PthreadMutexUnLock ( - IN VOID *Mutex - ) -{ - return (UINTN)pthread_mutex_unlock ((pthread_mutex_t *)Mutex); -} - - -UINTN -EFIAPI -PthreadMutexTryLock ( - IN VOID *Mutex - ) -{ - return (UINTN)pthread_mutex_trylock ((pthread_mutex_t *)Mutex); -} - - -VOID * -PthreadMutexInit ( - IN VOID - ) -{ - pthread_mutex_t *Mutex; - int err; - - Mutex = malloc (sizeof (pthread_mutex_t)); - err = pthread_mutex_init (Mutex, NULL); - if (err == 0) { - return Mutex; - } - - return NULL; -} - - -UINTN -PthreadMutexDestroy ( - IN VOID *Mutex - ) -{ - if (Mutex != NULL) { - return pthread_mutex_destroy ((pthread_mutex_t *)Mutex); - } - - return -1; -} - -// Can't store this data on PthreadCreate stack so we need a global -typedef struct { - pthread_mutex_t Mutex; - THREAD_THUNK_THREAD_ENTRY Start; -} THREAD_MANGLE; - -THREAD_MANGLE mThreadMangle = { - PTHREAD_MUTEX_INITIALIZER, - NULL -}; - -VOID * -SecFakePthreadStart ( - VOID *Context - ) -{ - THREAD_THUNK_THREAD_ENTRY Start; - sigset_t SigMask; - - // Save global on the stack before we unlock - Start = mThreadMangle.Start; - pthread_mutex_unlock (&mThreadMangle.Mutex); - - // Mask all signals to the APs - sigfillset (&SigMask); - pthread_sigmask (SIG_BLOCK, &SigMask, NULL); - - // - // We have to start the thread in SEC as we need to follow - // OS X calling conventions. We can then call back into - // to the callers Start. - // - // This is a great example of how all problems in computer - // science can be solved by adding another level of indirection - // - return (VOID *)ReverseGasketUint64 ((CALL_BACK)Start, (UINTN)Context); -} - -UINTN -PthreadCreate ( - IN VOID *Thread, - IN VOID *Attribute, - IN THREAD_THUNK_THREAD_ENTRY Start, - IN VOID *Context - ) -{ - int err; - BOOLEAN EnabledOnEntry; - - // - // Threads inherit interrupt state so disable interrupts before we start thread - // - if (SecInterruptEanbled ()) { - SecDisableInterrupt (); - EnabledOnEntry = TRUE; - } else { - EnabledOnEntry = FALSE; - } - - // Aquire lock for global, SecFakePthreadStart runs in a different thread. - pthread_mutex_lock (&mThreadMangle.Mutex); - mThreadMangle.Start = Start; - - err = pthread_create (Thread, Attribute, SecFakePthreadStart, Context); - if (err != 0) { - // Thread failed to launch so release the lock; - pthread_mutex_unlock (&mThreadMangle.Mutex); - } - - if (EnabledOnEntry) { - // Restore interrupt state - SecEnableInterrupt (); - } - - return err; -} - - -VOID -PthreadExit ( - IN VOID *ValuePtr - ) -{ - pthread_exit (ValuePtr); - return; -} - - -UINTN -PthreadSelf ( - VOID - ) -{ - // POSIX currently allows pthread_t to be a structure or arithmetic type. - // Check out sys/types.h to make sure this will work if you are porting. - // On OS X (Darwin) pthread_t is a pointer to a structure so this code works. - return (UINTN)pthread_self (); -} - - -EMU_THREAD_THUNK_PROTOCOL gPthreadThunk = { - GasketPthreadMutexLock, - GasketPthreadMutexUnLock, - GasketPthreadMutexTryLock, - GasketPthreadMutexInit, - GasketPthreadMutexDestroy, - GasketPthreadCreate, - GasketPthreadExit, - GasketPthreadSelf -}; - - -EFI_STATUS -PthreadOpen ( - IN EMU_IO_THUNK_PROTOCOL *This - ) -{ - if (This->Instance != 0) { - // Only single instance is supported - return EFI_NOT_FOUND; - } - - if (This->ConfigString[0] == L'0') { - // If AP count is zero no need for threads - return EFI_NOT_FOUND; - } - - This->Interface = &gPthreadThunk; - - return EFI_SUCCESS; -} - - -EFI_STATUS -PthreadClose ( - IN EMU_IO_THUNK_PROTOCOL *This - ) -{ - return EFI_SUCCESS; -} - - -EMU_IO_THUNK_PROTOCOL gPthreadThunkIo = { - &gEmuThreadThunkProtocolGuid, - NULL, - NULL, - 0, - GasketPthreadOpen, - GasketPthreadClose, - NULL -}; - - |