libiberty:

	* pex-common.c: New file.
	* pex-one.c: New file.
	* pexecute.c: New file.
	* pex-common.h: Include <stdio.h>.
	(struct pex_obj): Define.
	(struct pex_funcs): Define.
	(pex_init_common): Declare.
	* pex-unix.c: Rewrite.
	* pex-win32.c: Rewrite.
	* pex-djgpp.c: Rewrite.
	* pex-msdos.c: Rewrite.
	* testsuite/text-pexecute.c: New file.
	* pexecute.txh: Rewrite.
	* configure.ac: Check for wait3 and wait4.  Set CHECK to
	really-check rather than check-cplus-dem.
	* functions.texi: Rebuild.
	* Makefile.in: Rebuild dependencies.
	(CFILES): Add pexecute.c, pex-common.c, pex-one.c.
	(REQUIRED_OFILES): Add pexecute.o, pex-common.o, pex-one.o.
	* testsuite/Makefile.in (really-check): New target.
	(check-pexecute, test-pexecute): New targets.
	* configure: Rebuild.
include:
	* libiberty.h: Include <stdio.h>.
	(PEX_RECORD_TIMES, PEX_USE_PIPES, PEX_SAVE_TEMPS): Define.
	(PEX_LAST, PEX_SEARCH, PEX_SUFFIX, PEX_STDERR_TO_STDOUT): Define.
	(PEX_BINARY_INPUT, PEX_BINARY_OUTPUT): Define.
	(pex_init, pex_run, pex_read_output): Declare.
	(pex_get_status, pex_get_times, pex_free, pex_one): Declare.
	(struct pex_time): Define.

1 files changed, 84 insertions, 0 deletions

diff --git a/libiberty/pex-common.h b/libiberty/pex-common.h
index df3c0f6519c..c0b47fe348e 100644
--- a/libiberty/pex-common.h
+++ b/libiberty/pex-common.h
@@ -24,6 +24,7 @@ Boston, MA 02111-1307, USA.  */
 
 #include "config.h"
 #include "libiberty.h"
+#include <stdio.h>
 
 #define install_error_msg "installation problem, cannot exec `%s'"
 
@@ -42,4 +43,87 @@ Boston, MA 02111-1307, USA.  */
 /* value of `pipe': port index for writing.  */
 #define WRITE_PORT 1
 
+/* The structure used by pex_init and friends.  */
+
+struct pex_obj
+{
+  /* Flags.  */
+  int flags;
+  /* Name of calling program, for error messages.  */
+  const char *pname;
+  /* Base name to use for temporary files.  */
+  const char *tempbase;
+  /* Pipe to use as stdin for next process.  */
+  int next_input;
+  /* File name to use as stdin for next process.  */
+  char *next_input_name;
+  /* Whether next_input_name was allocated using malloc.  */
+  int next_input_name_allocated;
+  /* Number of child processes.  */
+  int count;
+  /* PIDs of child processes; array allocated using maloc.  */
+  long *children;
+  /* Exit statuses of child processes; array allocated using malloc.  */
+  int *status;
+  /* Time used by child processes; array allocated using malloc.  */
+  struct pex_time *time;
+  /* Number of children we have already waited for.  */
+  int number_waited;
+  /* FILE created by pex_read_output.  */
+  FILE *read_output;
+  /* Number of temporary files to remove.  */
+  int remove_count;
+  /* List of temporary files to remove; array allocated using malloc
+     of strings allocated using malloc.  */
+  char **remove;
+  /* Pointers to system dependent functions.  */
+  const struct pex_funcs *funcs;
+  /* For use by system dependent code.  */
+  void *sysdep;
+};
+
+/* Functions passed to pex_run_common.  */
+
+struct pex_funcs
+{
+  /* Open file NAME for reading.  If BINARY is non-zero, open in
+     binary mode.  Return >= 0 on success, -1 on error.  */
+  int (*open_read) (struct pex_obj *, const char *name, int binary);
+  /* Open file NAME for writing.  If BINARY is non-zero, open in
+     binary mode.  Return >= 0 on success, -1 on error.  */
+  int (*open_write) (struct pex_obj *, const char *name, int binary);
+  /* Execute a child process.  FLAGS, EXECUTABLE, ARGV, ERR are from
+     pex_run.  IN, OUT, ERRDES are each a descriptor, from open_read,
+     open_write, or pipe, or they are one of STDIN_FILE_NO,
+     STDOUT_FILE_NO or STDERR_FILE_NO; if not STD*_FILE_NO, they
+     should be closed.  The function should handle the
+     PEX_STDERR_TO_STDOUT flag.  Return >= 0 on success, or -1 on
+     error and set *ERRMSG and *ERR.  */
+  long (*exec_child) (struct pex_obj *, int flags, const char *executable,
+		      char * const * argv, int in, int out, int errdes,
+		      const char **errmsg, int *err);
+  /* Close a descriptor.  Return 0 on success, -1 on error.  */
+  int (*close) (struct pex_obj *, int);
+  /* Wait for a child to complete, returning exit status in *STATUS
+     and time in *TIME (if it is not null).  CHILD is from fork.  DONE
+     is 1 if this is called via pex_free.  ERRMSG and ERR are as in
+     fork.  Return 0 on success, -1 on error.  */
+  int (*wait) (struct pex_obj *, long, int *status, struct pex_time *time,
+	       int done, const char **errmsg, int *err);
+  /* Create a pipe (only called if PEX_USE_PIPES is set) storing two
+     descriptin in *P.  If BINARY is non-zero, open in binary mode.
+     Return 0 on success, -1 on error.  */
+  int (*pipe) (struct pex_obj *, int *p, int binary);
+  /* Get a FILE pointer to read from a file descriptor (only called if
+     PEX_USE_PIPES is set).  If BINARY is non-zero, open in binary
+     mode.  Return pointer on success, NULL on error.  */
+  FILE * (*fdopenr) (struct pex_obj *, int fd, int binary);
+  /* Free any system dependent data associated with OBJ.  May be
+     NULL if there is nothing to do.  */
+  void (*cleanup) (struct pex_obj *);
+};
+
+extern struct pex_obj *pex_init_common (int, const char *, const char *,
+					const struct pex_funcs *);
+
 #endif