The first step is certainly to consistently check the error returns of
all your system calls. Right now you are ignoring the error returns
of your SHMAT calls.
Ian
On Thu, Mar 21, 2019 at 8:24 AM <615912...@qq.com> wrote:
>
> Here is my code.
> package main
>
> /*
> #include
> #include
> #incl
Here is my code.
package main
/*
#include
#include
#include
static void memcpy_c(char *dest, int offs1, char *src, int offs2, int cnt) {
if (src == 0 || dest == 0) {
printf("a null ptr.\n");
return;
}
int a = 0;
long i = 0;
memcpy(dest + offs1, src+offs2, cnt);
while (1){
if (i >= cnt) {
break;
On Mon, Mar 18, 2019 at 8:17 PM <615912...@qq.com> wrote:
>
> shmid, _, err := syscall.Syscall(syscall.SYS_SHMGET, uintptr(10001), 1<<32,
> IpcCreate|0600)
> data_shmaddr, _, _ := syscall.Syscall(syscall.SYS_SHMAT, shmid, 0, 0)
> C.memcpy(unsafe.Pointer(data_shmaddr+uintptr(per_offs)),
> unsafe.P
shmid, _, err := syscall.Syscall(syscall.SYS_SHMGET, uintptr(10001), 1<<32,
IpcCreate|0600)
data_shmaddr, _, _ := syscall.Syscall(syscall.SYS_SHMAT, shmid, 0, 0)
C.memcpy(unsafe.Pointer(data_shmaddr+uintptr(per_offs)), unsafe.Pointer((C.
CString)(string(*data))), C.ulong(len(*data)))
I'm trying t
