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cgo: supports c/go callback funcs

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This commit is contained in:
Li Jie
2024-11-26 22:34:19 +08:00
parent 5380ffa471
commit 90763de93c
12 changed files with 162 additions and 84 deletions
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36
cl/_testgo/cgofull/cgofull.go
View File

@@ -77,9 +77,26 @@ static void test_macros() {
#define MY_VERSION "1.0.0"
#define MY_CODE 0x12345678
void test_void() {
static void test_void() {
printf("test_void\n");
}
typedef int (*Cb)(int);
extern int go_callback(int);
extern int c_callback(int i);
static void test_callback(Cb cb) {
printf("test_callback, cb: %p, go_callback: %p, c_callback: %p\n", cb, go_callback, c_callback);
printf("test_callback, *cb: %p, *go_callback: %p, *c_callback: %p\n", *(void**)cb, *(void**)(go_callback), *(void**)(c_callback));
printf("cb result: %d\n", cb(123));
printf("done\n");
}
static void run_callback() {
test_callback(c_callback);
}
*/
import "C"
import (
@@ -90,6 +107,11 @@ import (
"github.com/goplus/llgo/_demo/cgofull/pymod2"
)
//export go_callback
func go_callback(i C.int) C.int {
return i + 1
}
func main() {
runPy()
f := &C.Foo{a: 1}
@@ -104,6 +126,16 @@ func main() {
fmt.Println(C.MY_VERSION)
fmt.Println(int(C.MY_CODE))
C.test_void()
println("call run_callback")
C.run_callback()
// test _Cgo_ptr and _cgoCheckResult
println("call with go_callback")
C.test_callback((C.Cb)(C.go_callback))
println("call with c_callback")
C.test_callback((C.Cb)(C.c_callback))
}
func runPy() {
@@ -112,4 +144,6 @@ func runPy() {
Run("print('Hello, Python!')")
C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod1.Float(1.23))), C.stderr, 0)
C.PyObject_Print((*C.PyObject)(unsafe.Pointer(pymod2.Long(123))), C.stdout, 0)
// test _Cgo_use
C.PyObject_Print((*C.PyObject)(unsafe.Pointer(C.PyComplex_FromDoubles(C.double(1.23), C.double(4.56)))), C.stdout, 0)
}

8
cl/_testgo/cgofull/foo.c
View File

@@ -1,6 +1,12 @@
#include <stdio.h>
#include "foo.h"
void print_foo(Foo* f) {
void print_foo(Foo *f)
{
printf("print_foo: %d\n", f->a);
}
int c_callback(int i)
{
return i + 1;
}

64
cl/_testgo/out.ll
View File

@@ -1,64 +0,0 @@
; ModuleID = 'main'
source_filename = "main"
%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
@"main.init$guard" = global i1 false, align 1
@0 = private unnamed_addr constant [5 x i8] c"hello", align 1
@__llgo_argc = global i32 0, align 4
@__llgo_argv = global ptr null, align 8
define i64 @main.Foo(%"github.com/goplus/llgo/internal/runtime.String" %0) {
_llgo_0:
%1 = extractvalue %"github.com/goplus/llgo/internal/runtime.String" %0, 1
ret i64 %1
}
define void @main.Test() {
_llgo_0:
br label %_llgo_3
_llgo_1: ; preds = %_llgo_3
%0 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
%1 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %0, i32 0, i32 0
store ptr @0, ptr %1, align 8
%2 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %0, i32 0, i32 1
store i64 5, ptr %2, align 4
%3 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %0, align 8
%4 = call i64 @main.Foo(%"github.com/goplus/llgo/internal/runtime.String" %3)
%5 = add i64 %6, 1
br label %_llgo_3
_llgo_2: ; preds = %_llgo_3
ret void
_llgo_3: ; preds = %_llgo_1, %_llgo_0
%6 = phi i64 [ 0, %_llgo_0 ], [ %5, %_llgo_1 ]
%7 = icmp slt i64 %6, 1000000
br i1 %7, label %_llgo_1, label %_llgo_2
}
define void @main.init() {
_llgo_0:
%0 = load i1, ptr @"main.init$guard", align 1
br i1 %0, label %_llgo_2, label %_llgo_1
_llgo_1: ; preds = %_llgo_0
store i1 true, ptr @"main.init$guard", align 1
br label %_llgo_2
_llgo_2: ; preds = %_llgo_1, %_llgo_0
ret void
}
define i32 @main(i32 %0, ptr %1) {
_llgo_0:
store i32 %0, ptr @__llgo_argc, align 4
store ptr %1, ptr @__llgo_argv, align 8
call void @"github.com/goplus/llgo/internal/runtime.init"()
call void @main.init()
call void @main.Test()
ret i32 0
}
declare void @"github.com/goplus/llgo/internal/runtime.init"()