《Go 语言高级编程》随书源码.zip

#line 1 "cgo-builtin-prolog" #include <stddef.h> /* for ptrdiff_t and size_t below */ /* Define intgo when compiling with GCC. */ typedef ptrdiff_t intgo; typedef struct { const char *p; intgo n; } _GoString_; typedef struct { char *p; intgo n; intgo c; } _GoBytes_; _GoString_ GoString(char *p); _GoString_ GoStringN(char *p, int l); _GoBytes_ GoBytes(void *p, int n); char *CString(_GoString_); void *CBytes(_GoBytes_); void *_CMalloc(size_t); __attribute__ ((unused)) static size_t _GoStringLen(_GoString_ s) { return s.n; } __attribute__ ((unused)) static const char *_GoStringPtr(_GoString_ s) { return s.p; } #line 6 "/Users/chai/go/src/github.com/chai2010/advanced-go-programming-book/examples/ch2-05-internal/02-go-call-c-func/main.go" int sum(int a, int b) { return a+b; } #line 1 "cgo-generated-wrapper" #line 1 "cgo-gcc-prolog" /* If x and y are not equal, the type will be invalid (have a negative array count) and an inscrutable error will come out of the compiler and hopefully mention "name". */ #define __cgo_compile_assert_eq(x, y, name) typedef char name[(x-y)*(x-y)*-2+1]; /* Check at compile time that the sizes we use match our expectations. */ #define __cgo_size_assert(t, n) __cgo_compile_assert_eq(sizeof(t), n, _cgo_sizeof_##t##_is_not_##n) __cgo_size_assert(char, 1) __cgo_size_assert(short, 2) __cgo_size_assert(int, 4) typedef long long __cgo_long_long; __cgo_size_assert(__cgo_long_long, 8) __cgo_size_assert(float, 4) __cgo_size_assert(double, 8) extern char* _cgo_topofstack(void); #include <errno.h> #include <string.h> #define CGO_NO_SANITIZE_THREAD #define _cgo_tsan_acquire() #define _cgo_tsan_release() CGO_NO_SANITIZE_THREAD void _cgo_506f45f9fa85_Cfunc_sum(void *v) { struct { int p0; int p1; int r; char __pad12[4]; } __attribute__((__packed__)) *a = v; char *stktop = _cgo_topofstack(); __typeof__(a->r) r; _cgo_tsan_acquire(); r = sum(a->p0, a->p1); _cgo_tsan_release(); a = (void*)((char*)a + (_cgo_topofstack() - stktop)); a->r = r; }