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externs.go
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externs.go
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// Copyright (C) 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testutils
import (
"unsafe"
"github.com/google/gapid/gapil/executor"
)
//#include "gapil/runtime/cc/runtime.h"
//
// typedef struct extern_a_args_t {
// uint64_t i;
// float f;
// GAPIL_BOOL b;
// } extern_a_args;
//
// typedef struct extern_b_args_t {
// string* s;
// } extern_b_args;
import "C"
var (
// ExternA will be called whenever the test_extern_a extern function is
// called.
ExternA func(*executor.Env, uint64, float32, bool) uint64
// ExternB will be called whenever the test_extern_b extern function is
// called.
ExternB func(*executor.Env, string) bool
)
func init() {
executor.RegisterGoExtern("test.extern_a", externA)
executor.RegisterGoExtern("test.extern_b", externB)
}
func externA(env *executor.Env, args, out unsafe.Pointer) {
a := (*C.extern_a_args)(args)
o := (*uint64)(out)
b := false
if a.b != 0 {
b = true
}
*o = ExternA(env, uint64(a.i), float32(a.f), b)
}
func externB(env *executor.Env, args, out unsafe.Pointer) {
a := (*C.extern_b_args)(args)
o := (*bool)(out)
*o = ExternB(env, C.GoString((*C.char)((unsafe.Pointer)(&a.s.data[0]))))
}