suspend不能 ？
Ubuntu 6.06 + ACE 5.5 + gcc 4.0.2线程模型posix我从ACE_Task<ACE_MT_SYNCH>派生的类，不知为何不能挂起，跑得贼欢，烦请各位指点 orz
code:
#include "ace/Log_Msg.h"
#include "ace/Task_T.h"
class Messager : public ACE_Task<ACE_MT_SYNCH>
{
public:
Messager(){}
virtual int svc(void)
{
while(1){
suspend();
ACE_DEBUG((LM_INFO, "in svc()\n"));
ACE_OS::sleep(3);
}
return 0;
}
};
int main(int argc, ACE_TCHAR* argv[])
{
Messager mm;
mm.activate(THR_NEW_LWP|THR_SUSPENDED|THR_JOINABLE); //SUSPENDED seems not take effect, maybe implement it myself with cond?
mm.suspend();
ACE_DEBUG((LM_DEBUG, "suspend it\n"));
while(1);
mm.wait();
return 0;
}
can you try to getACE_OS::last_error();
Not all the platforms support suspend.
Which kernel version you have. Most likely your kernel doesn't support suspend.
BTW, suspend from another thread is not good idea. My kernel is 2.6.17-10 ...
I tried ACE_OS::last_error(), which returned 95.
I used ACE_OS::perror, it said "Operation not supported"
I got it, thanks very much
One more thing, "suspend from another thread is not good idea", do you mean such action may cause fatal error like segment fault , or mean it may suspend that thread in some unexpected place?
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