【发布时间】:2015-05-29 14:06:55
【问题描述】:
与 C 代码互操作,我无法直接转换结构,我不得不在 Go 中定义一个等效的结构。
libproc.h 的 C 函数是
int proc_pidinfo(int pid, int flavor, uint64_t arg, void *buffer, int buffersize)
flavor==PROC_PIDTASKINFO 的 C 结构是 proc_taskinfo,在 sys/proc_info.h 中定义(包含在 libproc.h 中):
struct proc_taskinfo {
uint64_t pti_virtual_size; /* virtual memory size (bytes) */
uint64_t pti_resident_size; /* resident memory size (bytes) */
uint64_t pti_total_user; /* total time */
uint64_t pti_total_system;
uint64_t pti_threads_user; /* existing threads only */
uint64_t pti_threads_system;
int32_t pti_policy; /* default policy for new threads */
int32_t pti_faults; /* number of page faults */
int32_t pti_pageins; /* number of actual pageins */
int32_t pti_cow_faults; /* number of copy-on-write faults */
int32_t pti_messages_sent; /* number of messages sent */
int32_t pti_messages_received; /* number of messages received */
int32_t pti_syscalls_mach; /* number of mach system calls */
int32_t pti_syscalls_unix; /* number of unix system calls */
int32_t pti_csw; /* number of context switches */
int32_t pti_threadnum; /* number of threads in the task */
int32_t pti_numrunning; /* number of running threads */
int32_t pti_priority; /* task priority*/
};
即使 Go 代码确实有效,我也无法直接使用 C.proc_taskinfo。 Go函数为propertiesOf():完整源码here。
如果我引用 C 结构,我会收到与 latest question 中关于该主题的类似错误报告:could not determine kind of name for C.proc_taskinfo,但这次我确定定义是使用 #include 导入的。
【问题讨论】:
标签: c pointers go language-interoperability