* adaint.h, adaint.c
(__gnat_portable_spawn): Fix cast of spawnvp third parameter to avoid warnings. Add also a cast to kill another warning. (win32_no_block_spawn): Initialize CreateProcess's dwCreationFlags parameter with the priority class of the parent process instead of always using the NORMAL_PRIORITY_CLASS. (__gnat_dup): New function. (__gnat_dup2): New function. (__gnat_is_symbolic_link): Enable the effective body of this function when __APPLE__ is defined. * g-os_lib.ads, g-os_lib.adb (Spawn): Two new procedures. Update comments. From-SVN: r90899
This commit is contained in:
Arnaud Charlet
parent
f99652b5e3
commit
f5a0cbf108
@ -1512,7 +1512,7 @@ __gnat_is_symbolic_link (char *name ATTRIBUTE_UNUSED)
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#if defined (__vxworks)
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return 0;
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#elif defined (_AIX) || defined (__unix__)
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#elif defined (_AIX) || defined (__APPLE__) || defined (__unix__)
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int ret;
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struct stat statbuf;
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@ -1557,11 +1557,11 @@ __gnat_portable_spawn (char *args[])
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strcat (args[0], args_0);
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strcat (args[0], "\"");
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status = spawnvp (P_WAIT, args_0, (const char* const*)args);
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status = spawnvp (P_WAIT, args_0, (char* const*)args);
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/* restore previous value */
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free (args[0]);
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args[0] = args_0;
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args[0] = (char *)args_0;
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if (status < 0)
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return -1;
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@ -1606,6 +1606,34 @@ __gnat_portable_spawn (char *args[])
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return 0;
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}
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/* Create a copy of the given file descriptor.
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Return -1 if an error occurred. */
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int
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__gnat_dup (int oldfd)
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{
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#if defined (__vxworks)
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/* Not supported on VxWorks. */
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return -1;
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#else
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return dup (oldfd);
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#endif
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}
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/* Make newfd be the copy of oldfd, closing newfd first if necessary.
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Return -1 if an error occured. */
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int
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__gnat_dup2 (int oldfd, int newfd)
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{
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#if defined (__vxworks)
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/* Not supported on VxWorks. */
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return -1;
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#else
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return dup2 (oldfd, newfd);
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#endif
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}
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/* WIN32 code to implement a wait call that wait for any child process. */
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#ifdef _WIN32
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@ -1743,8 +1771,9 @@ win32_no_block_spawn (char *command, char *args[])
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k++;
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}
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result = CreateProcess (NULL, (char *) full_command, &SA, NULL, TRUE,
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NORMAL_PRIORITY_CLASS, NULL, NULL, &SI, &PI);
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result = CreateProcess
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(NULL, (char *) full_command, &SA, NULL, TRUE,
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GetPriorityClass (GetCurrentProcess()), NULL, NULL, &SI, &PI);
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free (full_command);
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@ -147,6 +147,8 @@ extern void __gnat_set_binary_mode (int);
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extern void __gnat_set_text_mode (int);
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extern char *__gnat_ttyname (int);
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extern int __gnat_lseek (int, long, int);
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extern int __gnat_dup (int);
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extern int __gnat_dup2 (int, int);
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#ifdef __MINGW32__
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extern void __gnat_plist_init (void);
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@ -2143,6 +2143,80 @@ package body GNAT.OS_Lib is
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Success := (Spawn (Program_Name, Args) = 0);
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end Spawn;
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procedure Spawn
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(Program_Name : String;
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Args : Argument_List;
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Output_File_Descriptor : File_Descriptor;
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Return_Code : out Integer;
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Err_To_Out : Boolean := True)
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is
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function Dup (Fd : File_Descriptor) return File_Descriptor;
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pragma Import (C, Dup, "__gnat_dup");
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procedure Dup2 (Old_Fd, New_Fd : File_Descriptor);
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pragma Import (C, Dup2, "__gnat_dup2");
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Saved_Output : File_Descriptor;
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Saved_Error : File_Descriptor;
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begin
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-- Set standard output and error to the temporary file
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Saved_Output := Dup (Standout);
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Dup2 (Output_File_Descriptor, Standout);
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if Err_To_Out then
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Saved_Error := Dup (Standerr);
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Dup2 (Output_File_Descriptor, Standerr);
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end if;
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-- Spawn the program
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Return_Code := Spawn (Program_Name, Args);
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-- Restore the standard output and error
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Dup2 (Saved_Output, Standout);
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if Err_To_Out then
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Dup2 (Saved_Error, Standerr);
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end if;
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-- And close the saved standard output and error file descriptors.
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Close (Saved_Output);
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if Err_To_Out then
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Close (Saved_Error);
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end if;
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end Spawn;
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procedure Spawn
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(Program_Name : String;
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Args : Argument_List;
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Output_File : String;
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Success : out Boolean;
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Return_Code : out Integer;
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Err_To_Out : Boolean := True)
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is
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FD : File_Descriptor;
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begin
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Success := True;
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Return_Code := 0;
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FD := Create_Output_Text_File (Output_File);
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if FD = Invalid_FD then
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Success := False;
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return;
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end if;
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Spawn (Program_Name, Args, FD, Return_Code, Err_To_Out);
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Close (FD, Success);
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end Spawn;
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--------------------
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-- Spawn_Internal --
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--------------------
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@ -420,12 +420,12 @@ pragma Elaborate_Body (OS_Lib);
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-- returns an empty string.
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--
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-- For case-sensitive file systems, the value of Case_Sensitive parameter
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-- is ignored. In systems that have a non case-sensitive file system like
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-- Windows and OpenVMS, if this parameter is set OFF, then the result
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-- is returned folded to lower case, this allows to checks if two files
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-- are the same by applying this function to their names and by comparing
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-- the results of these calls. If Case_Sensitive is ON, this function does
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-- not change the casing of file and directory names.
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-- is ignored. For file systems that are not case-sensitive, such as
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-- Windows and OpenVMS, if this parameter is set to False, then the file
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-- and directory names are folded to lower case. This allows checking
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-- whether two files are the same by applying this function to their names
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-- and comparing the results. If Case_Sensitive is set to True, this
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-- function does not change the casing of file and directory names.
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function Is_Absolute_Path (Name : String) return Boolean;
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-- Returns True if Name is an absolute path name, i.e. it designates
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@ -652,7 +652,38 @@ pragma Elaborate_Body (OS_Lib);
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-- operating systems which have no notion of separately spawnable programs.
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--
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-- "Spawn" should not be used in tasking applications.
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procedure Spawn
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(Program_Name : String;
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Args : Argument_List;
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Output_File_Descriptor : File_Descriptor;
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Return_Code : out Integer;
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Err_To_Out : Boolean := True);
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-- Similar to the procedure above, but redirects the output to
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-- the file designated by Output_File_Descriptor. If Err_To_Out
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-- is True, then the Standard Error output is also redirected.
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--
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-- Return_Code is set to the status code returned by the operating
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-- system as described above.
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--
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-- "Spawn" should not be used in tasking applications.
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procedure Spawn
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(Program_Name : String;
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Args : Argument_List;
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Output_File : String;
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Success : out Boolean;
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Return_Code : out Integer;
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Err_To_Out : Boolean := True);
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-- Similar to the procedure above, but saves the output of the command
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-- to a file with the name Output_File.
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--
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-- Success is set to True if the command is executed and its output
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-- successfully written to the file. If Success is True, then
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-- Return_Code will be set to the status code returned by the
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-- operating system. Otherwise, Return_Code is undefined.
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--
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-- "Spawn" should not be used in tasking applications.
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type Process_Id is private;
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-- A private type used to identify a process activated by the following
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