fix leaks
[m6w6/ext-psi] / src / libffi.c
index 5962b5e7431aedaff1d362aed1b5bae373712e72..514394f4047f506650473e367a724a7c729d4d8b 100644 (file)
@@ -8,6 +8,7 @@
 
 #include "php_psi.h"
 #include "libffi.h"
+#include "engine.h"
 
 #undef PACKAGE
 #undef PACKAGE_BUGREPORT
@@ -42,8 +43,23 @@ static void *psi_ffi_closure_alloc(size_t s, void **code)
        }
        return *code;
 #else
-       return NULL;
+# error "Neither ffi_closure_alloc() nor mmap() available"
+#endif
+}
+
+static ffi_status psi_ffi_prep_closure(ffi_closure **closure, void **code, ffi_cif *sig, void (*handler)(ffi_cif*,void*,void**,void*), void *data) {
+       *closure = psi_ffi_closure_alloc(sizeof(ffi_closure), code);
+       ZEND_ASSERT(*closure != NULL);
+
+#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
+       return ffi_prep_closure_loc(*closure, sig, handler, data, *code);
+
+#elif PSI_HAVE_FFI_PREP_CLOSURE
+       return ffi_prep_closure(*code, sig, handler, data);
+#else
+# error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() is available"
 #endif
+
 }
 
 static void psi_ffi_closure_free(void *c)
@@ -55,12 +71,116 @@ static void psi_ffi_closure_free(void *c)
 #endif
 }
 
-static void psi_ffi_handler(ffi_cif *signature, void *_result, void **_args, void *_data);
+static void psi_ffi_handler(ffi_cif *_sig, void *_result, void **_args, void *_data)
+{
+       psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
+}
+
+static void psi_ffi_callback(ffi_cif *_sig, void *_result, void **_args, void *_data)
+{
+       size_t i;
+       unsigned argc = _sig->nargs;
+       void **argv = _args;
+       let_callback *cb = _data;
+       decl *decl_cb = cb->decl;
+       impl_arg *iarg = cb->func->var->arg;
+       zval return_value, *zargv = calloc(argc, sizeof(*zargv));
+       void *result, *to_free = NULL;
+
+       ZEND_ASSERT(argc == cb->decl->args->count);
+
+       /* prepare args for the userland call */
+       for (i = 0; i < argc; ++i) {
+               cb->decl->args->args[i]->ptr = argv[i];
+       }
+       for (i = 0; i < cb->args->count; ++i) {
+               psi_do_set(&zargv[i], cb->args->vals[i]);
+       }
+       zend_fcall_info_argp(&iarg->val.zend.cb->fci, cb->args->count, zargv);
+
+       /* callback into userland */
+       ZVAL_UNDEF(&return_value);
+       iarg->_zv = &return_value;
+       zend_fcall_info_call(&iarg->val.zend.cb->fci, &iarg->val.zend.cb->fcc, iarg->_zv, NULL);
+
+       /* marshal return value of the userland call */
+       switch (iarg->type->type) {
+       case PSI_T_BOOL:        zend_parse_arg_bool(iarg->_zv, &iarg->val.zend.bval, NULL, 0);          break;
+       case PSI_T_LONG:        zend_parse_arg_long(iarg->_zv, &iarg->val.zend.lval, NULL, 0, 1);       break;
+       case PSI_T_FLOAT:
+       case PSI_T_DOUBLE:      zend_parse_arg_double(iarg->_zv, &iarg->val.dval, NULL, 0);                     break;
+       case PSI_T_STRING:      zend_parse_arg_str(iarg->_zv, &iarg->val.zend.str, 0);                          break;
+       }
+       result = cb->func->handler(_result, decl_cb->func->type, iarg, &to_free);
+
+       if (result != _result) {
+               *(void **)_result = result;
+       }
+
+       zend_fcall_info_args_clear(&iarg->val.zend.cb->fci, 0);
+       for (i = 0; i < cb->args->count; ++i) {
+               zval_ptr_dtor(&zargv[i]);
+       }
+       free(zargv);
+}
+
 static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg);
 
+typedef struct PSI_LibffiContext {
+       ffi_cif signature;
+       ffi_type *params[2];
+} PSI_LibffiContext;
+
+typedef struct PSI_LibffiCall {
+       void *code;
+       ffi_closure *closure;
+       ffi_cif signature;
+       void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
+} PSI_LibffiCall;
+
 static inline ffi_abi psi_ffi_abi(const char *convention) {
        return FFI_DEFAULT_ABI;
 }
+
+static inline PSI_LibffiCall *PSI_LibffiCallAlloc(PSI_Context *C, decl *decl) {
+       int rc;
+       size_t i, c = decl->args ? decl->args->count : 0;
+       PSI_LibffiCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
+
+       for (i = 0; i < c; ++i) {
+               call->params[i] = psi_ffi_decl_arg_type(decl->args->args[i]);
+       }
+       call->params[c] = NULL;
+
+       decl->call.info = call;
+       decl->call.rval = &decl->func->ptr;
+       decl->call.argc = c;
+       decl->call.args = (void **) &call->params[c+1];
+
+       rc = ffi_prep_cif(&call->signature, psi_ffi_abi(decl->abi->convention),
+                       c, psi_ffi_decl_arg_type(decl->func), (ffi_type **) call->params);
+       ZEND_ASSERT(FFI_OK == rc);
+
+       return call;
+}
+
+static inline ffi_status PSI_LibffiCallInitClosure(PSI_Context *C, PSI_LibffiCall *call, impl *impl) {
+       PSI_LibffiContext *context = C->context;
+
+       return psi_ffi_prep_closure(&call->closure, &call->code, &context->signature, psi_ffi_handler, impl);
+}
+
+static inline ffi_status PSI_LibffiCallInitCallbackClosure(PSI_Context *C, PSI_LibffiCall *call, let_callback *cb) {
+       return psi_ffi_prep_closure(&call->closure, &call->code, &call->signature, psi_ffi_callback, cb);
+}
+
+static inline void PSI_LibffiCallFree(PSI_LibffiCall *call) {
+       if (call->closure) {
+               psi_ffi_closure_free(call->closure);
+       }
+       free(call);
+}
+
 static inline ffi_type *psi_ffi_token_type(token_t t) {
        switch (t) {
        default:
@@ -87,6 +207,7 @@ static inline ffi_type *psi_ffi_token_type(token_t t) {
        case PSI_T_BOOL:
                return &ffi_type_uchar;
        case PSI_T_INT:
+       case PSI_T_ENUM:
                return &ffi_type_sint;
        case PSI_T_LONG:
                return &ffi_type_slong;
@@ -94,7 +215,12 @@ static inline ffi_type *psi_ffi_token_type(token_t t) {
                return &ffi_type_float;
        case PSI_T_DOUBLE:
                return &ffi_type_double;
+#ifdef HAVE_LONG_DOUBLE
+       case PSI_T_LONG_DOUBLE:
+               return &ffi_type_longdouble;
+#endif
        case PSI_T_POINTER:
+       case PSI_T_FUNCTION:
                return &ffi_type_pointer;
        }
 }
@@ -186,7 +312,11 @@ static ffi_type **psi_ffi_struct_type_elements(decl_struct *strct) {
 static inline ffi_type *psi_ffi_decl_type(decl_type *type) {
        decl_type *real = real_decl_type(type);
 
-       if (real->type == PSI_T_STRUCT) {
+       switch (real->type) {
+       case PSI_T_FUNCTION:
+               return &ffi_type_pointer;
+
+       case PSI_T_STRUCT:
                if (!real->strct->engine.type) {
                        ffi_type *strct = calloc(1, sizeof(ffi_type));
 
@@ -199,8 +329,13 @@ static inline ffi_type *psi_ffi_decl_type(decl_type *type) {
                }
 
                return real->strct->engine.type;
+
+       case PSI_T_UNION:
+               return psi_ffi_decl_arg_type(real->unn->args->args[0]);
+
+       default:
+               return psi_ffi_token_type(real->type);
        }
-       return psi_ffi_token_type(real->type);
 }
 static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
        if (darg->var->pointer_level) {
@@ -210,69 +345,6 @@ static inline ffi_type *psi_ffi_decl_arg_type(decl_arg *darg) {
        }
 }
 
-typedef struct PSI_LibffiContext {
-       ffi_cif signature;
-       ffi_type *params[2];
-} PSI_LibffiContext;
-
-typedef struct PSI_LibffiCall {
-       void *code;
-       ffi_closure *closure;
-       ffi_cif signature;
-       void *params[1]; /* [type1, type2, NULL, arg1, arg2] ... */
-} PSI_LibffiCall;
-
-static inline PSI_LibffiCall *PSI_LibffiCallAlloc(PSI_Context *C, decl *decl) {
-       int rc;
-       size_t i, c = decl->args ? decl->args->count : 0;
-       PSI_LibffiCall *call = calloc(1, sizeof(*call) + 2 * c * sizeof(void *));
-
-       for (i = 0; i < c; ++i) {
-               call->params[i] = psi_ffi_decl_arg_type(decl->args->args[i]);
-       }
-       call->params[c] = NULL;
-
-       decl->call.info = call;
-       decl->call.rval = &decl->func->ptr;
-       decl->call.argc = c;
-       decl->call.args = (void **) &call->params[c+1];
-
-       rc = ffi_prep_cif(&call->signature, psi_ffi_abi(decl->abi->convention),
-                       c, psi_ffi_decl_arg_type(decl->func), (ffi_type **) call->params);
-       ZEND_ASSERT(FFI_OK == rc);
-
-       return call;
-}
-
-static inline void PSI_LibffiCallInitClosure(PSI_Context *C, PSI_LibffiCall *call, impl *impl) {
-       PSI_LibffiContext *context = C->context;
-       int rc;
-
-       call->closure = psi_ffi_closure_alloc(sizeof(ffi_closure), &call->code);
-       ZEND_ASSERT(call->closure != NULL);
-
-#if PSI_HAVE_FFI_PREP_CLOSURE_LOC
-       rc = ffi_prep_closure_loc(
-                       call->closure,
-                       &context->signature,
-                       psi_ffi_handler,
-                       impl,
-                       call->code);
-
-#elif PSI_HAVE_FFI_PREP_CLOSURE
-       rc = ffi_prep_closure(call->code, &context->signature, psi_ffi_handler, impl);
-#else
-# error "Neither ffi_prep_closure() nor ffi_prep_closure_loc() available"
-#endif
-       ZEND_ASSERT(FFI_OK == rc);
-}
-
-static inline void PSI_LibffiCallFree(PSI_LibffiCall *call) {
-       if (call->closure) {
-               psi_ffi_closure_free(call->closure);
-       }
-       free(call);
-}
 
 static inline PSI_LibffiContext *PSI_LibffiContextInit(PSI_LibffiContext *L) {
        ffi_status rc;
@@ -290,11 +362,6 @@ static inline PSI_LibffiContext *PSI_LibffiContextInit(PSI_LibffiContext *L) {
        return L;
 }
 
-static void psi_ffi_handler(ffi_cif *_sig, void *_result, void **_args, void *_data)
-{
-       psi_call(*(zend_execute_data **)_args[0], *(zval **)_args[1], _data);
-}
-
 static void psi_ffi_init(PSI_Context *C)
 {
        C->context = PSI_LibffiContextInit(NULL);
@@ -312,13 +379,33 @@ static void psi_ffi_dtor(PSI_Context *C)
                                PSI_LibffiCallFree(decl->call.info);
                        }
                }
+
+       }
+       if (C->impls) {
+               size_t i, j;
+
+               for (i = 0; i < C->impls->count; ++i) {
+                       impl *impl = C->impls->list[i];
+
+                       for (j = 0; j < impl->stmts->let.count; ++j) {
+                               let_stmt *let = impl->stmts->let.list[j];
+
+                               if (let->val && let->val->kind == PSI_LET_CALLBACK) {
+                                       let_callback *cb = let->val->data.callback;
+
+                                       if (cb->decl && cb->decl->call.info) {
+                                               PSI_LibffiCallFree(cb->decl->call.info);
+                                       }
+                               }
+                       }
+               }
        }
        free(C->context);
 }
 
 static zend_function_entry *psi_ffi_compile(PSI_Context *C)
 {
-       size_t i, j = 0;
+       size_t c, i, j = 0;
        zend_function_entry *zfe;
 
        if (!C->impls) {
@@ -336,19 +423,41 @@ static zend_function_entry *psi_ffi_compile(PSI_Context *C)
                }
 
                call = PSI_LibffiCallAlloc(C, impl->decl);
-               PSI_LibffiCallInitClosure(C, call, impl);
+               if (FFI_OK != PSI_LibffiCallInitClosure(C, call, impl)) {
+                       PSI_LibffiCallFree(call);
+                       continue;
+               }
 
                zf->fname = impl->func->name + (impl->func->name[0] == '\\');
                zf->num_args = impl->func->args->count;
                zf->handler = call->code;
                zf->arg_info = psi_internal_arginfo(impl);
                ++j;
+
+               for (c = 0; c < impl->stmts->let.count; ++c) {
+                       let_stmt *let = impl->stmts->let.list[c];
+
+                       if (let->val->kind == PSI_LET_CALLBACK) {
+                               let_callback *cb = let->val->data.callback;
+
+                               call = PSI_LibffiCallAlloc(C, cb->decl);
+                               if (FFI_OK != PSI_LibffiCallInitCallbackClosure(C, call, cb)) {
+                                       PSI_LibffiCallFree(call);
+                                       continue;
+                               }
+
+                               cb->decl->call.sym = call->code;
+                       }
+               }
        }
 
        for (i = 0; i < C->decls->count; ++i) {
                decl *decl = C->decls->list[i];
 
-               if (decl->impl) {
+//             if (decl->impl) {
+//                     continue;
+//             }
+               if (decl->call.info) {
                        continue;
                }