297 lines
12 KiB
C
297 lines
12 KiB
C
/*=========================================================================
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Program: KWSys - Kitware System Library
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#ifndef @KWSYS_NAMESPACE@_Process_h
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#define @KWSYS_NAMESPACE@_Process_h
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#include <@KWSYS_NAMESPACE@/Configure.h>
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/* Redefine all public interface symbol names to be in the proper
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namespace. These macros are used internally to kwsys only, and are
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not visible to user code. Use kwsysHeaderDump.pl to reproduce
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these macros after making changes to the interface. */
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#define kwsys(x) @KWSYS_NAMESPACE@##x
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#define kwsysEXPORT @KWSYS_NAMESPACE@_EXPORT
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#define kwsysProcess kwsys(Process)
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#define kwsysProcess_s kwsys(Process_s)
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#define kwsysProcess_New kwsys(Process_New)
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#define kwsysProcess_Delete kwsys(Process_Delete)
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#define kwsysProcess_SetCommand kwsys(Process_SetCommand)
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#define kwsysProcess_SetTimeout kwsys(Process_SetTimeout)
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#define kwsysProcess_SetWorkingDirectory kwsys(Process_SetWorkingDirectory)
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#define kwsysProcess_State_Starting kwsys(Process_State_Starting)
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#define kwsysProcess_State_Error kwsys(Process_State_Error)
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#define kwsysProcess_State_Exception kwsys(Process_State_Exception)
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#define kwsysProcess_State_Executing kwsys(Process_State_Executing)
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#define kwsysProcess_State_Exited kwsys(Process_State_Exited)
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#define kwsysProcess_State_Expired kwsys(Process_State_Expired)
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#define kwsysProcess_State_Killed kwsys(Process_State_Killed)
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#define kwsysProcess_GetState kwsys(Process_GetState)
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#define kwsysProcess_State_e kwsys(Process_State_e)
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#define kwsysProcess_Exception_None kwsys(Process_Exception_None)
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#define kwsysProcess_Exception_Fault kwsys(Process_Exception_Fault)
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#define kwsysProcess_Exception_Illegal kwsys(Process_Exception_Illegal)
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#define kwsysProcess_Exception_Interrupt kwsys(Process_Exception_Interrupt)
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#define kwsysProcess_Exception_Numerical kwsys(Process_Exception_Numerical)
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#define kwsysProcess_Exception_Other kwsys(Process_Exception_Other)
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#define kwsysProcess_GetExitException kwsys(Process_GetExitException)
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#define kwsysProcess_Exception_e kwsys(Process_Exception_e)
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#define kwsysProcess_GetExitCode kwsys(Process_GetExitCode)
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#define kwsysProcess_GetExitValue kwsys(Process_GetExitValue)
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#define kwsysProcess_GetErrorString kwsys(Process_GetErrorString)
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#define kwsysProcess_Execute kwsys(Process_Execute)
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#define kwsysProcess_WaitForData kwsys(Process_WaitForData)
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#define kwsysProcess_Pipes_e kwsys(Process_Pipes_e)
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#define kwsysProcess_Pipe_STDOUT kwsys(Process_Pipe_STDOUT)
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#define kwsysProcess_Pipe_STDERR kwsys(Process_Pipe_STDERR)
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#define kwsysProcess_Pipe_Timeout kwsys(Process_Pipe_Timeout)
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#define kwsysProcess_WaitForExit kwsys(Process_WaitForExit)
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#define kwsysProcess_Kill kwsys(Process_Kill)
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/**
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* Process control data structure.
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*/
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typedef struct kwsysProcess_s kwsysProcess;
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/**
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* Create a new Process instance.
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*/
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kwsysEXPORT kwsysProcess* kwsysProcess_New();
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/**
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* Delete an existing Process instance. If the instance is currently
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* executing a process, this blocks until the process terminates.
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*/
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kwsysEXPORT void kwsysProcess_Delete(kwsysProcess* cp);
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/**
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* Set the command line to be executed. Argument is an array of
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* pointers to the command and each argument. Ths array must end with
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* a NULL pointer.
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*/
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kwsysEXPORT void kwsysProcess_SetCommand(kwsysProcess* cp,
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char const* const* command);
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/**
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* Set the timeout for the child process. The timeout period begins
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* when the child is executed. If the child has not terminated when
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* the timeout expires, it will be killed. A non-positive (<= 0)
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* value will disable the timeout.
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*/
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kwsysEXPORT void kwsysProcess_SetTimeout(kwsysProcess* cp, double timeout);
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/**
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* Set the working directory for the child process. The working
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* directory can be absolute or relative to the current directory.
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*/
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kwsysEXPORT void kwsysProcess_SetWorkingDirectory(kwsysProcess* cp,
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const char* dir);
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/**
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* Get the current state of the Process instance. Possible states are:
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*
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* kwsysProcess_State_Starting = Execute has not yet been called.
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* kwsysProcess_State_Error = Error administrating the child process.
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* kwsysProcess_State_Exception = Child process exited abnormally.
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* kwsysProcess_State_Executing = Child process is currently running.
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* kwsysProcess_State_Exited = Child process exited normally.
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* kwsysProcess_State_Expired = Child process's timeout expired.
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* kwsysProcess_State_Killed = Child process terminated by Kill method.
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*/
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kwsysEXPORT int kwsysProcess_GetState(kwsysProcess* cp);
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enum kwsysProcess_State_e
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{
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kwsysProcess_State_Starting,
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kwsysProcess_State_Error,
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kwsysProcess_State_Exception,
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kwsysProcess_State_Executing,
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kwsysProcess_State_Exited,
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kwsysProcess_State_Expired,
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kwsysProcess_State_Killed
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};
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/**
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* When GetState returns "Exception", this method returns a
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* platform-independent description of the exceptional behavior that
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* caused the child to terminate abnormally. Possible exceptions are:
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*
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* kwsysProcess_Exception_None = No exceptional behavior occurred.
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* kwsysProcess_Exception_Fault = Child crashed with a memory fault.
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* kwsysProcess_Exception_Illegal = Child crashed with an illegal instruction.
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* kwsysProcess_Exception_Interrupt = Child was interrupted by user (Cntl-C/Break).
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* kwsysProcess_Exception_Numerical = Child crashed with a numerical exception.
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* kwsysProcess_Exception_Other = Child terminated for another reason.
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*/
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kwsysEXPORT int kwsysProcess_GetExitException(kwsysProcess* cp);
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enum kwsysProcess_Exception_e
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{
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kwsysProcess_Exception_None,
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kwsysProcess_Exception_Fault,
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kwsysProcess_Exception_Illegal,
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kwsysProcess_Exception_Interrupt,
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kwsysProcess_Exception_Numerical,
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kwsysProcess_Exception_Other
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};
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/**
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* When GetState returns "Exited" or "Exception", this method returns
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* the platform-specific raw exit code of the process. UNIX platforms
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* should use WIFEXITED/WEXITSTATUS and WIFSIGNALED/WTERMSIG to access
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* this value. Windows users should compare the value to the various
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* EXCEPTION_* values.
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*
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* If GetState returns "Exited", use GetExitValue to get the
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* platform-independent child return value.
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*/
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kwsysEXPORT int kwsysProcess_GetExitCode(kwsysProcess* cp);
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/**
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* When GetState returns "Exited", this method returns the child's
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* platform-independent exit code (such as the value returned by the
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* child's main).
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*/
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kwsysEXPORT int kwsysProcess_GetExitValue(kwsysProcess* cp);
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/**
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* When GetState returns "Error", this method returns a string
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* describing the problem. Otherwise, it returns NULL.
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*/
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kwsysEXPORT const char* kwsysProcess_GetErrorString(kwsysProcess* cp);
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/**
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* Start executing the child process.
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*/
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kwsysEXPORT void kwsysProcess_Execute(kwsysProcess* cp);
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/**
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* Block until data are available on a requested pipe, a timeout
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* expires, or the child process terminates. Arguments are as
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* follows:
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*
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* pipes = Flags for the child output pipes of interest to the caller.
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* Possible values are Pipe_STDOUT and Pipe_STDERR. Multiple
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* pipes may be specified by using the bitwise OR operator '|'.
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* data = If data are read, the pointer to which this points is
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* set to point to the data.
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* length = If data are read, the integer to which this points is
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* set to the length of the data read.
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* timeout = Specifies the maximum time this call may block. Upon
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* return after reading data, the time elapsed is subtracted
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* from the timeout value. If this timeout expires, the
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* value is set to 0. A NULL pointer passed for this argument
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* indicates no timeout for the call.
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*
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* Return value will be one of:
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*
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* 0 = No more data will be available from the child process,
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* or no process has been executed. WaitForExit should
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* be called to wait for the process to terminate.
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* Pipe_STDOUT = Data have been read from the child's stdout pipe.
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* Pipe_STDERR = Data have been read from the child's stderr pipe.
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* Pipe_Timeout = No data available within timeout specified for the
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* call. Time elapsed has been subtracted from timeout
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* argument.
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*/
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kwsysEXPORT int kwsysProcess_WaitForData(kwsysProcess* cp, int pipes,
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char** data, int* length,
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double* timeout);
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enum kwsysProcess_Pipes_e
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{
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kwsysProcess_Pipe_STDOUT=1,
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kwsysProcess_Pipe_STDERR=2,
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kwsysProcess_Pipe_Timeout=255
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};
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/**
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* Block until the child process terminates or the given timeout
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* expires. If no process is running, returns immediatly. The
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* argument is:
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*
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* timeout = Specifies the maximum time this call may block. Upon
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* returning due to child termination, the elapsed time
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* is subtracted from the given value. A NULL pointer
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* passed for this argument indicates no timeout for the
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* call.
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*
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* Return value will be one of:
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*
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* 0 = Child did not terminate within timeout specified for
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* the call. Time elapsed has been subtracted from timeout
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* argument.
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* 1 = Child has terminated or was not running.
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*/
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kwsysEXPORT int kwsysProcess_WaitForExit(kwsysProcess* cp, double* timeout);
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/**
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* Forcefully terminate the child process that is currently running.
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* The caller should call WaitForExit after this returns to wait for
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* the child to terminate.
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*/
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kwsysEXPORT void kwsysProcess_Kill(kwsysProcess* cp);
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#if defined(__cplusplus)
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} /* extern "C" */
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#endif
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/* If we are building a kwsysProcess .c file, let it use these macros.
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Otherwise, undefine them to keep the namespace clean. */
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#if !defined(KWSYS_IN_PROCESS_C)
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# undef kwsys
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# undef kwsysEXPORT
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# undef kwsysProcess
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# undef kwsysProcess_s
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# undef kwsysProcess_New
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# undef kwsysProcess_Delete
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# undef kwsysProcess_SetCommand
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# undef kwsysProcess_SetTimeout
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# undef kwsysProcess_SetWorkingDirectory
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# undef kwsysProcess_State_Starting
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# undef kwsysProcess_State_Error
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# undef kwsysProcess_State_Exception
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# undef kwsysProcess_State_Executing
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# undef kwsysProcess_State_Exited
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# undef kwsysProcess_State_Expired
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# undef kwsysProcess_State_Killed
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# undef kwsysProcess_GetState
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# undef kwsysProcess_State_e
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# undef kwsysProcess_Exception_None
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# undef kwsysProcess_Exception_Fault
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# undef kwsysProcess_Exception_Illegal
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# undef kwsysProcess_Exception_Interrupt
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# undef kwsysProcess_Exception_Numerical
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# undef kwsysProcess_Exception_Other
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# undef kwsysProcess_GetExitException
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# undef kwsysProcess_Exception_e
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# undef kwsysProcess_GetExitCode
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# undef kwsysProcess_GetExitValue
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# undef kwsysProcess_GetErrorString
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# undef kwsysProcess_Execute
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# undef kwsysProcess_WaitForData
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# undef kwsysProcess_Pipes_e
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# undef kwsysProcess_Pipe_STDOUT
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# undef kwsysProcess_Pipe_STDERR
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# undef kwsysProcess_Pipe_Timeout
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# undef kwsysProcess_WaitForExit
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# undef kwsysProcess_Kill
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#endif
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#endif
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