rw_process.h

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#ifndef RW_PROCESS_H_INCLUDED
#define RW_PROCESS_H_INCLUDED
 
 
#include <rw_testdefs.h>
 
typedef _RWSTD_SSIZE_T rw_pid_t;
 
_TEST_EXPORT int
rw_system (const char*, ...);
 
// returns pid of the created process or -1 on error
// (in which case errno is set to an appropriate value)
_TEST_EXPORT rw_pid_t
rw_process_create (const char*, ...);
 
// note: argv[0] should be equal to path
// returns pid of the created process or -1 on error
// (in which case errno is set to an appropriate value)
_TEST_EXPORT rw_pid_t
rw_process_create (const char* /*path*/, char* const /*argv*/[]);
 
// result is a pointer to a buffer where the result code
//   of the specified process will be stored, or NULL
//
// the function suspends execution of the current process
// until a child has exited or specified timeout is reached
//
// returns:
//   pid of the specified process if it has exited
//   0 when process still active
//   -1 on error (in which case errno is set to an appropriate value)
//
// timeout is timeout interval in seconds.
//   if timeout > 0 the function returns if the interval elapses
//   if timeout == 0 the function returns immediately
//   if timeout < 0 the function's time-out interval never elapses
//
// errors:
//   ECHILD: no specified process exists
_TEST_EXPORT rw_pid_t
rw_waitpid (rw_pid_t /*pid*/, int* /*result*/, int /*timeout*/ = -1);
 
// returns:
//  0 when process terminated successfully
//  1 when signal was sent to the child process, but child process
//  not terminated within 1 second interval
//  -1 on error (in which case errno is set to an appropriate value)
// errors:
//   ESRCH: the pid does not exist
//   EPERM: the calling process does not have permission
//          to terminate the specified process
_TEST_EXPORT int
rw_process_kill (rw_pid_t, int = -1);
 
#endif   // RW_PROCESS_H_INCLUDED