#include <ffi.h>
+#ifndef PSI_HAVE_FFI_CLOSURE_ALLOC
+# include <unistd.h>
+# include <sys/mman.h>
+#endif
+
static void handler(ffi_cif *signature, void *_result, void **_args, void *_data);
static inline ffi_abi psi_ffi_abi(const char *convention) {
psi_ffi_decl_arg_type(data->impl->decl->func),
data->params);
ZEND_ASSERT(FFI_OK == rc);
+
+#ifdef PSI_HAVE_FFI_CLOSURE_ALLOC
data->closure = ffi_closure_alloc(sizeof(ffi_closure), &data->code);
rc = ffi_prep_closure_loc(
data->closure,
data,
data->code);
ZEND_ASSERT(FFI_OK == rc);
+#else
+ i = getpagesize();
+ data->closure = malloc(sizeof(ffi_closure) + i);
+ data->code = (void *) (((intptr_t) data->closure + i - 1) & ~((intptr_t) i - 1));
+ rc = mprotect(data->code, sizeof(ffi_closure), PROT_EXEC|PROT_WRITE);
+ ZEND_ASSERT(rc == 0);
+ rc = ffi_prep_closure(data->code, &context->signature, handler, data);
+ ZEND_ASSERT(FFI_OK == rc);
+#endif
context->data.list = realloc(context->data.list, ++context->data.count * sizeof(*context->data.list));
context->data.list[context->data.count-1] = data;
static inline void PSI_LibffiDataFree(PSI_LibffiData *data) {
free(data->arginfo);
+#ifdef PSI_HAVE_FFI_CLOSURE_FREE
ffi_closure_free(data->closure);
+#else
+ free(data->closure);
+#endif
free(data);
}