10:59 "li~ e8YЮ21h hdisabled +l=J*C]q@EpS i_I|+? /***** Support code for embedding *****/ #if defined(_MSC_VER) # define CFFI_DLLEXPORT __declspec(dllexport) #elif defined(__GNUC__) # define CFFI_DLLEXPORT __attribute__((visibility("default"))) #else # define CFFI_DLLEXPORT /* nothing */ #endif /* There are two global variables of type _cffi_call_python_fnptr: * _cffi_call_python, which we declare just below, is the one called by ``extern "Python"`` implementations. * _cffi_call_python_org, which on CPython is actually part of the _cffi_exports[] array, is the function pointer copied from _cffi_backend. After initialization is complete, both are equal. However, the first one remains equal to &_cffi_start_and_call_python until the very end of initialization, when we are (or should be) sure that concurrent threads also see a completely initialized world, and only then is it changed. */ #undef _cffi_call_python typedef void (*_cffi_call_python_fnptr)(struct _cffi_externpy_s *, char *); static void _cffi_start_and_call_python(struct _cffi_externpy_s *, char *); static _cffi_call_python_fnptr _cffi_call_python = &_cffi_start_and_call_python; #ifndef _MSC_VER /* --- Assuming a GCC not infinitely old --- */ # define cffi_compare_and_swap(l,o,n) __sync_bool_compare_and_swap(l,o,n) # define cffi_write_barrier() __sync_synchronize() # if !defined(__amd64__) && !defined(__x86_64__) && \ !defined(__i386__) && !defined(__i386) # define cffi_read_barrier() __sync_synchronize() # else # define cffi_read_barrier() (void)0 # endif #else /* --- Windows threads version --- */ # include # define cffi_compare_and_swap(l,o,n) \ (InterlockedCompareExchangePointer(l,n,o) == (o)) # define cffi_write_barrier() InterlockedCompareExchange(&_cffi_dummy,0,0) # define cffi_read_barrier() (void)0 static volatile LONG _cffi_dummy; #endif #ifdef WITH_THREAD # ifndef _MSC_VER # include static pthread_mutex_t _cffi_embed_startup_lock; # else static CRITICAL_SECTION _cffi_embed_startup_lock; # endif static char _cffi_embed_startup_lock_ready = 0; #endif static void _cffi_acquire_reentrant_mutex(void) { static void *volatile lock = NULL; while (!cffi_compare_and_swap(&lock, NULL, (void *)1)) { /* should ideally do a spin loop instruction here, but hard to do it portably and doesn't really matter I think: pthread_mutex_init() should be very fast, and this is only run at start-up anyway. */ } #ifdef WITH_THREAD if (!_cffi_embed_startup_lock_ready) { # ifndef _MSC_VER pthread_mutexattr_t attr; pthread_mutexattr_init(&attr); pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); pthread_mutex_init(&_cffi_embed_startup_lock, &attr); # else InitializeCriticalSection(&_cffi_embed_startup_lock); # endif _cffi_embed_startup_lock_ready = 1; } #endif while (!cffi_compare_and_swap(&lock, (void *)1, NULL)) ; #ifndef _MSC_VER pthread_mutex_lock(&_cffi_embed_startup_lock); #else EnterCriticalSection(&_cffi_embed_startup_lock); #endif } static void _cffi_release_reentrant_mutex(void) { #ifndef _MSC_VER pthread_mutex_unlock(&_cffi_embed_startup_lock); #else LeaveCriticalSection(&_cffi_embed_startup_lock); #endif } /********** CPython-specific section **********/ #ifndef PYPY_VERSION #define _cffi_call_python_org _cffi_exports[_CFFI_CPIDX] PyMODINIT_FUNC _CFFI_PYTHON_STARTUP_FUNC(void); /* forward */ static void _cffi_py_initialize(void) { /* XXX use initsigs=0, which "skips initialization registration of signal handlers, which might be useful when Python is embedded" according to the Python docs. But review and think if it should be a user-controllable setting. XXX we should also give a way to write errors to a buffer instead of